Log in

Relevant bibliographies by topics / Steel Foundry

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Steel Foundry'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Steel Foundry.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Steel Foundry"

1

Briggs, C. W. "AMERICAN STEEL FOUNDRY PRACTICE." Journal of the American Society for Naval Engineers 45, no. 1 (March 18, 2009): 34–45. http://dx.doi.org/10.1111/j.1559-3584.1933.tb05108.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Chen, Shoukun, Jinjia Zhang, Kaili Xu, and Qingwei Xu. "Thermal Decomposition Behaviour of Foundry Sand for Cast Steel in Nitrogen and Air Atmospheres." Mathematical Problems in Engineering 2020 (June 17, 2020): 1–12. http://dx.doi.org/10.1155/2020/8121276.

Full text

Abstract:

Sand casting is the most widely used casting technique, known for ages, even since ancient times. The main goal of this study was to determine the thermal decomposition behaviour of foundry sand for cast steel. We first tested the basic properties of foundry sand, including its proximate analysis, chemical composition, and particle size characteristics; we next monitored the thermal decomposition behaviour of foundry sand for cast steel via simultaneous thermal analysis. We focused on the mass loss of foundry sand for cast steel at different heating rates in nitrogen and air atmospheres. We adopted a novel method to calculate the volatile release characteristic index of foundry sand. The volatile content of foundry sand for cast steel was very low, so the volatile release characteristic index of the sand could not be strictly calculated according to this concept. We calculated the thermal decomposition kinetics parameters of foundry sand, namely, the activation energy and preexponential factor, under kinetics theory. To thoroughly test the fitting effect, we conducted a single-factor analysis of variance on the source of error. The results showed that the independent variable has a significant influence on the dependent variable and that the fitting equation we selected is feasible and effective.

APA, Harvard, Vancouver, ISO, and other styles

3

McCalla, D. R., C. Kaiser-Farrell, M. A. Quilliam, M. Lant, C. P. Sheldrake, A. Kerr, J. N. Lockington, and E. S. Gibson. "Lung Cancer in a Steel Foundry." Chest 89, no. 4 (April 1986): 313S. http://dx.doi.org/10.1378/chest.89.4_supplement.313s.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Saternus, Mariola, and Ladislav Socha. "Modern Trends in Foundry." Metals 13, no. 7 (July 5, 2023): 1236. http://dx.doi.org/10.3390/met13071236.

Full text

Abstract:

The production volume of metals and their alloys, taking into account the current demand for materials containing steel, cast iron, non-ferrous metals and their alloys, will continue to increase in the near future [...]

APA, Harvard, Vancouver, ISO, and other styles

5

Yang, Da Chun. "Foundry Technology of the Pressure Board Steel Casting Based on Proportional Solidification Theory." Advanced Materials Research 314-316 (August 2011): 691–94. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.691.

Full text

Abstract:

For plate steel castings, the foundry technology was designed according to the dynamic directional solidification of proportional solidification theory. Adopting chilling process for the thick and large plane, it may cause the casting basically even cooling. Using self-feeding shrinkage in solidification achieved the dynamic directional feeding of molten steel, and the casting was poured and congealing at the same time. The shrinkage of finally congealing part was fed by small riser. Adopting this foundry technology, the large plane downwards avoided appearing the defects such as sand buckle, slag, pinhole porosity, and pore, etc.; the process yield was greatly increased with this foundry technology, too.

APA, Harvard, Vancouver, ISO, and other styles

6

Studnicki, A., M. Kondracki, J. Suchoń, J. Szajnar, D. Bartocha, and T. Wróbel. "Abrasive Wear of Alloyed Cast Steels Applied for Heavy Machinery." Archives of Foundry Engineering 15, no. 1 (March 1, 2015): 99–104. http://dx.doi.org/10.1515/afe-2015-0018.

Full text

Abstract:

Abstract In the paper the results and analysis of abrasive wear studies were shown for two grades of cast steels: low-alloyed cast steel applied for heavy machinery parts such as housing, covers etc. and chromium cast steels applied for kinetic nodes of pin-sleeve type. Studies were performed using the modified in Department of Foundry pin-on-disc method.

APA, Harvard, Vancouver, ISO, and other styles

7

He, Bin Feng. "Foundry Technique Designing and Optimization of the Cast-Steel Casting." Applied Mechanics and Materials 556-562 (May 2014): 1155–58. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.1155.

Full text

Abstract:

The traditional method has been used to the foundry technique for the cast-steel casting. And the commercial foundry simulation software was used to validate the rationality of the foundry technique. Four side risers and some cylindrical chills were used to decrease the shrinkages which would occur in casting. The results show that the risers could not feed the casting effectively because of the limited feeding distance. A top riser was introduced to eliminate the defects, the simulation results show that still some shrinkages occurred because the heat effect between risers. The side risers were replaced by an annular chill. Finally, the shrinkages would happened in casting were eliminated.

APA, Harvard, Vancouver, ISO, and other styles

8

He, Bin Feng. "Simulation and Optimization of Steel Casting by Sand Casting." Advanced Materials Research 706-708 (June 2013): 258–61. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.258.

Full text

Abstract:

Casting defects will always occurred in the cast-steel castings. In order to eliminate the shrinkages more and more risers had been used which increased the final cost sharply. The traditional method was used to the designing process; besides that, the foundry simulation software was introduced to prove the rationality of the technique. The software helps to predict the proper position of the shrinkages. The cooling system was optimized after the analyzed and the final simulation results show the rationality of foundry technique.

APA, Harvard, Vancouver, ISO, and other styles

9

Yang, Da Chun, Sen Lin Li, and Feng He. "Twin Gating System Design for Typical Thin Wall Stainless Steel Castings Based on Fast Pouring Mechanism." Applied Mechanics and Materials 457-458 (October 2013): 1657–60. http://dx.doi.org/10.4028/www.scientific.net/amm.457-458.1657.

Full text

Abstract:

The thin wall stainless steel castings is difference to ordinary steel castings in foundry technology. This paper discussed the problems of thin wall stainless steel castings which appearing in the flow controlling board for warm-air pipe, and put forward the foundry technology of this stainless steel castings based on the principle of directional solidification and fast pouring mechanism. According to the theory, twin gating system has been designed for the controlling board castings, and two ladles are pouring into the open twin gating system at the same time. The shrinkage of finally congealing part was fed by two risers. The practice has shown that the design is feasible, there is not cold shut, misrun, scab, and oxidizing for the castings, and the requirements of mechanical properties can be met.

APA, Harvard, Vancouver, ISO, and other styles

10

Chaus, Alexander S., Martin Sahul, and Matej Bračík. "Diffusion Induced Changes in Cast and Wrought M2 High-Speed Steel Subject to Homogenisation Annealing." Diffusion Foundations 22 (May 2019): 24–33. http://dx.doi.org/10.4028/www.scientific.net/df.22.24.

Full text

Abstract:

The influence of annealing at 1200 °C for 2, 4 and 8 h on the carbide microstructure of AISI M2 type high-speed steel obtained by both the foundry and conventional metallurgy technologies has been studied. The primary focus was on the kinetics of eutectic carbide decomposition and dissolution in both the cast and wrought M2 high-speed steels under the effect of high temperature.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Steel Foundry"

1

Fletcher, Anthony C. "The mortality of steel foundry workers : a cohort study." Thesis, Aston University, 1986. http://publications.aston.ac.uk/13338/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Mazumdar, Dipak 1932. "Fluid flow, particle motion and mixing in ladle metallurgy operations." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72064.

Full text

Abstract:

Extensive computer predictions have been carried out by the author to study flow, addition dispersion and particle motion during central gas injection into cylindrical vessels. In conjunction with numerical computations, experiments were conducted in a 0.30 scale water model of a 150 ton steel processing ladle, using a Froude number scaling criterion. Two typical gas injection configurations (i.e., conventional central injection and C.A.S. alloy addition procedure) were investigated.
Flow visualization studies were carried out using a suspended network of silken threads, mean velocity vectors and overall flow patterns were determined by video recording techniques, while mean velocity vectors and associated turbulence level were also measured with laser doppler velocimetry. These measurements show very reasonable agreement with equivalent numerical predictions.
To simulate the subsurface motion of additions, spherical wooden balls of various densities were dropped from typical heights, and their subsurface trajectories, immersion times, etc., recorded by means of a video recorder. Frame by frame analysis of the video tapes showed trends which are in good accord with computed trajectories.
Mixing times of simulated molten additions were measured by the conductivity measurement technique. These were compared with prediction from an equivalent tracer dispersion model and excellent agreement achieved.
For industrial application, flow, particle motion, and mixing times in a 150 ton steel processing ladle have been predicted and their technological significance discussed.

APA, Harvard, Vancouver, ISO, and other styles

3

Venus, Anthony Derek. "The application of computer based modelling to steel foundry design for manufacture." Thesis, University of Sunderland, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319769.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Mathirajan, M. "Heuristic Scheduling Algorithms For Parallel Heterogeneous Batch Processors." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/196.

Full text

Abstract:

In the last decade, market pressures for greater variety of products forced a gradual shift from continuous manufacturing to batch manufacturing in various industries. Consequently batch scheduling problems have attracted the attention of researchers in production and operations management. This thesis addresses the scheduling of parallel non-identical batch processors in the presence of dynamic job arrivals, incompatible job-families and non-identical job sizes. This problem abstracts the scheduling of heat-treatment furnace operations of castings in a steel foundry. The problem is of considerable interest in this sector as a large proportion of the total production time is spent in heat treatment processing. This problem is also encountered in other industrial settings such as burn-in operation in the final testing stage of semiconductor manufacturing, and manufacturing of steel, ceramics, aircraft parts, footwear, etc. A detailed literature review and personal communications with experts revealed that this class of batch scheduling problems have not been addressed hitherto. A major concern in the management of foundries is to maximize throughput and reduce flow time and work-in-process inventories. Therefore we have chosen the primary scheduling objective to be the utilization of batch processors and as secondary objectives the minimization of overall flow time and weighted average waiting time per job. This formulation can be considered as an extension of problems studied by DOBSON AND NAMBINADOM (1992), UZSOY (1995), ZEE et a/. (1997) and MEHTA AND UZSOY (1998). Our effort to carefully catalogue the large number of variants of deterministic batch scheduling problems led us to the development of a taxonomy and notation. Not surprisingly, we are able to show that our problem is NP-hard and is therefore in the company of many scheduling problems that are difficult to solve. Initially two heuristic algorithms, one a mathematical programming based heuristic algorithm (MPHA) and the other a greedy heuristic algorithm were developed. Due to the computational overheads in the implementation of MPHA when compared with the greedy heuristic, we chose to focus on the latter as the primary scheduling methodology. Preliminary experimentation led us to the observation that the performance of greedy heuristics depends critically on the selection of job-families. So eight variants of the greedy heuristic that differ mainly in the decision on "job-family selection" were proposed. These eight heuristics are basically two sets {Al, A2, A3, A4} and the modified (MAI, MA2, MA3, MA4}, which differ only on how the "job-family" index, weighted shortest processing time, is computed. For evaluating the performance of the eight heuristics, computational experiments were carried out. The analysis of the experimental data is presented in two perspectives. The goal of the first perspective was to evaluate the absolute quality of the solutions obtained by the proposed heuristic algorithms when compared with estimated optimal solutions. The second perspective was to compare the relative performance of the proposed heuristics. The test problems generated were designed to reflect real-world scheduling problems that we have observed in the steel-casting industry. Three important problem parameters for the test set generation are the number of jobs [n], job-priority [P], and job-family [F]. We considered 5 different levels for n, 2 different levels for P and 2 different levels for F. The test set reflects (i) the size of the jobs vary uniformly (ii) there are two batch processors and (iii) five incompatible job-families with different processing times. 15 problem instances were generated for each level of (n, P, and F). Out of many procedures available in the literature for estimating optimal value for combinatorial optimization problems, we used the procedure based on Weibull distribution as discussed in Rardin and Uzsoy (2001). For each problem instance of the randomly generated 300 problem instances, 15 feasible solutions (i.e., the average utilization of batch processors (AUBP)) were obtained using "random decision rule for first two stages and using a "best-fit heuristic' for the last stage of the scheduling problem. These 15 feasible solutions were used to estimate the optimal value. The generated 15 feasible solutions are expected to provide the estimated optimal value of the problem instance with a very high probability. Both average performance and worst-case performance of the heuristics indicated that, the heuristic algorithms A3 and A4, on the average yielded better utilization than the estimated optimal value. This indicates that the Weibull-based technique may have yielded conservative estimates of the optimal value. Further, the other heuristic algorithms found inferior solutions when compared with the estimated optimal value. But the deviations were very small. From this, we may infer that all the proposed heuristic algorithms are acceptable. The relative evaluation of heuristics was in terms of both computational effort and the quality of the solution. For the heuristics, it was clear that the computational burden is low enough on the average to run all the proposed heuristics on each problem instance and select the best solution. Also, it is observed that any algorithm from the first set of {Al, A2, A3, and A4} takes more computational time than any one from the second set {MAI, MA2, MA3, and MA4}. Regarding solution quality, the following inferences were made: ٭ In general the heuristic algorithms are sensitive to the choice of problem factors with respect to all the scheduling objectives. ٭ The three algorithms A3, MA4 and MAI are observed to be superior with respect to the scheduling objectives: maximizing average utilization of batch processors (AUBP), minimization of overall flow time (OFT) and minimizing weighted average waiting time (WAWT) respectively. Further, the heuristic algorithm MAI turns out to be the best choice if we trade-off all three objectives AUBP, OFT and WAWT. Finally we carried out simple sensitivity analyses experiments in order to understand the influence of some parameters of the scheduling on the performance of the heuristic algorithms. These were related to one at a time changes in (1) job-size distribution, (2) capacities of batch processors and (3) processing time of job-families. From the analyses it appears that there is an influence of changes in these input parameters. The results of the sensitivity analyses can be used to guide the selection of a heuristic for a particular combination of input parameters. For example, if we have to pick a single heuristic algorithm, then MAI is the best choice when considering the performance and the robustness indicated by the sensitivity analysis. In summary, this thesis examined a problem arising in the scheduling of heat-treatment operations in the steel-casting industry. This problem was abstracted to a class of deterministic batch scheduling problems. We analyzed the computational complexity of this problem and showed that it is NP-hard and therefore unlikely to admit a scalable exact method. Eight variants of a fast greedy heuristic were designed to solve the scheduling problem of interest. Extensive computational experiments were carried out to compare the performance of the heuristics with estimated optimal values (using the Weibull technique) and also for relative effectiveness and this showed that the heuristics are capable of consistently obtaining near-estimated) optimal solutions with very low computational burden for the solution of large scale problems. Finally, a comprehensive sensitivity analysis was carried out to study the influence of a few parameters, by changing them one at a time, on the performance of the heuristic algorithms. This type of analysis gives users some confidence in the robustness of the proposed heuristics.

APA, Harvard, Vancouver, ISO, and other styles

5

Mathirajan, M. "Heuristic Scheduling Algorithms For Parallel Heterogeneous Batch Processors." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/196.

Full text

Abstract:

In the last decade, market pressures for greater variety of products forced a gradual shift from continuous manufacturing to batch manufacturing in various industries. Consequently batch scheduling problems have attracted the attention of researchers in production and operations management. This thesis addresses the scheduling of parallel non-identical batch processors in the presence of dynamic job arrivals, incompatible job-families and non-identical job sizes. This problem abstracts the scheduling of heat-treatment furnace operations of castings in a steel foundry. The problem is of considerable interest in this sector as a large proportion of the total production time is spent in heat treatment processing. This problem is also encountered in other industrial settings such as burn-in operation in the final testing stage of semiconductor manufacturing, and manufacturing of steel, ceramics, aircraft parts, footwear, etc. A detailed literature review and personal communications with experts revealed that this class of batch scheduling problems have not been addressed hitherto. A major concern in the management of foundries is to maximize throughput and reduce flow time and work-in-process inventories. Therefore we have chosen the primary scheduling objective to be the utilization of batch processors and as secondary objectives the minimization of overall flow time and weighted average waiting time per job. This formulation can be considered as an extension of problems studied by DOBSON AND NAMBINADOM (1992), UZSOY (1995), ZEE et a/. (1997) and MEHTA AND UZSOY (1998). Our effort to carefully catalogue the large number of variants of deterministic batch scheduling problems led us to the development of a taxonomy and notation. Not surprisingly, we are able to show that our problem is NP-hard and is therefore in the company of many scheduling problems that are difficult to solve. Initially two heuristic algorithms, one a mathematical programming based heuristic algorithm (MPHA) and the other a greedy heuristic algorithm were developed. Due to the computational overheads in the implementation of MPHA when compared with the greedy heuristic, we chose to focus on the latter as the primary scheduling methodology. Preliminary experimentation led us to the observation that the performance of greedy heuristics depends critically on the selection of job-families. So eight variants of the greedy heuristic that differ mainly in the decision on "job-family selection" were proposed. These eight heuristics are basically two sets {Al, A2, A3, A4} and the modified (MAI, MA2, MA3, MA4}, which differ only on how the "job-family" index, weighted shortest processing time, is computed. For evaluating the performance of the eight heuristics, computational experiments were carried out. The analysis of the experimental data is presented in two perspectives. The goal of the first perspective was to evaluate the absolute quality of the solutions obtained by the proposed heuristic algorithms when compared with estimated optimal solutions. The second perspective was to compare the relative performance of the proposed heuristics. The test problems generated were designed to reflect real-world scheduling problems that we have observed in the steel-casting industry. Three important problem parameters for the test set generation are the number of jobs [n], job-priority [P], and job-family [F]. We considered 5 different levels for n, 2 different levels for P and 2 different levels for F. The test set reflects (i) the size of the jobs vary uniformly (ii) there are two batch processors and (iii) five incompatible job-families with different processing times. 15 problem instances were generated for each level of (n, P, and F). Out of many procedures available in the literature for estimating optimal value for combinatorial optimization problems, we used the procedure based on Weibull distribution as discussed in Rardin and Uzsoy (2001). For each problem instance of the randomly generated 300 problem instances, 15 feasible solutions (i.e., the average utilization of batch processors (AUBP)) were obtained using "random decision rule for first two stages and using a "best-fit heuristic' for the last stage of the scheduling problem. These 15 feasible solutions were used to estimate the optimal value. The generated 15 feasible solutions are expected to provide the estimated optimal value of the problem instance with a very high probability. Both average performance and worst-case performance of the heuristics indicated that, the heuristic algorithms A3 and A4, on the average yielded better utilization than the estimated optimal value. This indicates that the Weibull-based technique may have yielded conservative estimates of the optimal value. Further, the other heuristic algorithms found inferior solutions when compared with the estimated optimal value. But the deviations were very small. From this, we may infer that all the proposed heuristic algorithms are acceptable. The relative evaluation of heuristics was in terms of both computational effort and the quality of the solution. For the heuristics, it was clear that the computational burden is low enough on the average to run all the proposed heuristics on each problem instance and select the best solution. Also, it is observed that any algorithm from the first set of {Al, A2, A3, and A4} takes more computational time than any one from the second set {MAI, MA2, MA3, and MA4}. Regarding solution quality, the following inferences were made: ٭ In general the heuristic algorithms are sensitive to the choice of problem factors with respect to all the scheduling objectives. ٭ The three algorithms A3, MA4 and MAI are observed to be superior with respect to the scheduling objectives: maximizing average utilization of batch processors (AUBP), minimization of overall flow time (OFT) and minimizing weighted average waiting time (WAWT) respectively. Further, the heuristic algorithm MAI turns out to be the best choice if we trade-off all three objectives AUBP, OFT and WAWT. Finally we carried out simple sensitivity analyses experiments in order to understand the influence of some parameters of the scheduling on the performance of the heuristic algorithms. These were related to one at a time changes in (1) job-size distribution, (2) capacities of batch processors and (3) processing time of job-families. From the analyses it appears that there is an influence of changes in these input parameters. The results of the sensitivity analyses can be used to guide the selection of a heuristic for a particular combination of input parameters. For example, if we have to pick a single heuristic algorithm, then MAI is the best choice when considering the performance and the robustness indicated by the sensitivity analysis. In summary, this thesis examined a problem arising in the scheduling of heat-treatment operations in the steel-casting industry. This problem was abstracted to a class of deterministic batch scheduling problems. We analyzed the computational complexity of this problem and showed that it is NP-hard and therefore unlikely to admit a scalable exact method. Eight variants of a fast greedy heuristic were designed to solve the scheduling problem of interest. Extensive computational experiments were carried out to compare the performance of the heuristics with estimated optimal values (using the Weibull technique) and also for relative effectiveness and this showed that the heuristics are capable of consistently obtaining near-estimated) optimal solutions with very low computational burden for the solution of large scale problems. Finally, a comprehensive sensitivity analysis was carried out to study the influence of a few parameters, by changing them one at a time, on the performance of the heuristic algorithms. This type of analysis gives users some confidence in the robustness of the proposed heuristics.

APA, Harvard, Vancouver, ISO, and other styles

6

BELLI, ALBERTO. "Comparison between Commercial and Recycled Carbon-Based Fillers and Fibers for the Development of Smart and Sustainable Multifunctional Mortars." Doctoral thesis, Università Politecnica delle Marche, 2019. http://hdl.handle.net/11566/263335.

Full text

Abstract:

La società moderna è in gran parte fondata sulle infrastrutture che garantiscono la fornitura di beni, trasporti e mezzi di comunicazione. La loro salvaguardia e il risparmio delle risorse necessarie per il loro funzionamento è di crescente importanza per l’Ingegneria civile. Per questo motivo, la ricerca sui materiali da costruzione si sta concentrando sul riutilizzo di sottoprodotti industriali riciclati, per un’industria edilizia più sostenibile. L’Ingegneria dei materiali, grazie al recente sviluppo di nanomateriali ad alte prestazioni, propone molteplici spunti per la realizzazione di materiali strutturali multifunzionali. La presente ricerca mira a sviluppare compositi multifunzionali a base di leganti idraulici, con l'aggiunta di filler e fibre a base di carbonio di origine riciclata, ottenuti da sottoprodotti industriali. Sono stati studiati i miglioramenti in termini di resistenze meccaniche e di durabilità, nonché le loro proprietà disinquinanti e fotocatalitiche. Le proprietà elettriche delle miscele sono state studiate, per la valutazione delle capacità di schermatura delle interferenze elettromagnetiche delle aggiunte, e come base di studio per lo sviluppo di materiali auto-sensibili per il monitoraggio strutturale. Sono state realizzate paste e malte contenenti grafene o altri filler a base di carbonio di origine riciclata (da 0.25 a 4% sul peso del legante) e fibre di carbonio (da 0.05 a 1.6% sul volume della miscela). Sui composti sono stati eseguiti test di resistenza meccanica e durabilità, nonché test di adsorbimento degli inquinanti, di fotocatalitisi e di resistività elettrica. La sensibilità elettrica alla deformazione è stata valutata misurando la variazione percentuale della resistività su provini soggetti a carichi di compressione semi-statici. I risultati mostrano che l’aggiunta di filler a base di carbonio riciclati porta a un raffinamento della microstruttura della matrice e a un incremento delle resistenze meccaniche, nonché a un decremento della permeabilità all’acqua. L’aggiunta di micro-fibre di carbonio riciclate porta a un incremento delle resistenze meccaniche a flessione, e a un notevole aumento della conducibilità elettrica (di svariati ordini di grandezza, rispetto ai tradizionali materiali cementizi).
Today's society is largely based on infrastructures that guarantee goods, transport and communication networks. Their safeguarding and saving of resources for their operation is becoming increasingly important in the field of building engineering. For this reason, research on building materials is increasingly focused on the re-use of recycled industrial by-products, for a more sustainable construction industry. Materials engineering, thanks to the development of high performance nanomaterials, offers several ideas for the construction of multifunctional building materials. The present research aims to develop multifunctional hydraulic binder-based composite with the addition of recycled carbon-based fillers and fibers obtained from industrial by-products. The enhancement of mechanical strength and durability of the composites have been studied, together with their de-polluting and photocatalytic properties. The electrical properties of the mixtures have been studied to analyze the Electromagnetic interference shielding capability of carbon-based admixtures, and to provide a basis for the development of strain-sensing materials for structural health monitoring. Pastes and mortars containing graphene or other commercial and recycled carbon-based fillers (from 0.25 to 4.0% on binder weight) and fibers (from 0.05 to 1.6% by mixture volume) were realized. Tests of mechanical resistance and durability were performed on the mixtures, together with test of pollutants adsorption, photocatalysis and electrical resistivity. Strain-sensitivity has been evaluated by measuring the fractional change in resistivity of the specimens subjected to quasi-static compressive loads. Results show that the addition of recycled carbon-based fillers leads to a refinement of the matrix microstructure, increasing the mechanical strength and decreasing the water permeability. The addition of recycled carbon micro-fibers leads to an increase in flexural strengths and to a noticeable increase in electrical conductivity (up to several orders of magnitude compared to the traditional cementitious materials).

APA, Harvard, Vancouver, ISO, and other styles

7

Marks, Susan Pearl. "The family firm in British business history : F Parkin & Sons Ltd., iron founders and steel stockholders 1859-1991 : four generations of an Exeter family firm." Thesis, University of Exeter, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437152.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Schemmann, Lars Verfasser], Stefan [Akademischer Betreuer] Zaefferer, Dierk [Akademischer Betreuer] [Raabe, and Wolfgang [Akademischer Betreuer] Bleck. "The inheritance of different microstructures found after hot rolling on the properties of a completely annealed DP-steel / Lars Schemmann ; Stefan Zaefferer, Dierk Raabe, Wolfgang Bleck." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1130589811/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Schemmann, Lars [Verfasser], Stefan Akademischer Betreuer] Zaefferer, Dierk [Akademischer Betreuer] [Raabe, and Wolfgang [Akademischer Betreuer] Bleck. "The inheritance of different microstructures found after hot rolling on the properties of a completely annealed DP-steel / Lars Schemmann ; Stefan Zaefferer, Dierk Raabe, Wolfgang Bleck." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1130589811/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Caudill, Ross Steven. "Ross Caudill MFA Sculpture 2006." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd/1407.

Full text

Abstract:

This thesis overviews my experience during graduate school making tangible,object oriented sculpture. I have been working formally to compose space in a way that develops a narrative between parts. The work is also a bridge between the fields of painting and sculpture, in terms of drawing with form and both painted and local, material color. My palette has mostly consisted of bronze casting, steel fabrication, fiberglass and epoxy resin, paint, the found object, woodworking, and mold making. This work is also conceptually based in showing the hand worked qualities of the materials, the transfer of meaning through casting, and my emotional relationship with the various parts of the sculptures. The three major themes of the work are: divine love and the complex of the apocalypse, the complexities and psychology concerning the relationship between a man and a woman, and the intrigue, potential energy, and beauty of the systems mankind hasinvented to harness the atom. The major artistic influences for this body of work have been: Jasper Johns, Marcel Duchamp, Constantine Brancusi, Alberto Giacommetti, Reg Butler, Henry Moore, Lynn Chadwick, Kenneth Armitage, Jeff Koons, Terry Winters, William DeKooning, Richard Diebenkorn, David Smith and Charles Long. I retain a strongrelationship with the movements of Dada, Surrealism, Futurism, and Assemblage, and amalso currently involved in solidifying the Manifesto of Raubeaux with a small group ofesteemed colleagues.

APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Steel Foundry"

1

Twarog, Daniel L. Foundry industry research plan, 1992. Des Plaines, Ill: AFS, 1992.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Marcus, Daniel. Baseline marketing study of the steel foundry industry. [Des Plaines, Ill.]: Steel Founders' Society of America, 1990.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

(Firm), Leading Edge Reports, ed. Foundry products and markets. Cleveland Hts., Ohio: Leading Edge Reports, 1993.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

(Firm), Leading Edge Reports, ed. Foundry products and markets. Cleveland Hts., OH: Leading Edge Reports, 1990.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Humfrey, Charles. The potential carcinogenicity of iron and steel foundry fumes. Birmingham: University of Birmingham, 1994.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

Fletcher, Anthony Clement. The mortality of steel foundry workers: A cohort study. Birmingham: Aston University. Health and Safety Unit, 1986.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Association of Iron and Steel Engineers., ed. Effects of clean-steel ladle linings on ladle design. Pittsburgh, PA (Three Gateway Center, Suite 2350, Pittsburgh 15222): Association of Iron and Steel Engineers, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

Technology Absorption and Adaptation Scheme (India), India. Dept. of Scientific & Industrial Research., and National Workshop on Technology & Norms in Ferrous Foundry Industry and Consultancy Capabilities in Foundry & Forging Industries (1990 : New Delhi, India), eds. Technology evaluation in ferrous foundry industry: A report prepared under Technology Absorption and Adaptation Scheme. New Delhi: Govt. of India, Dept. of Scientific & Industrial Research, Ministry of Science & Technology, 1991.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

Australia. Dept. of Industry, Technology and Commerce. and Metal Trades Industry Association of Australia., eds. Australian ferrous foundry industry: Final report, October 1985. Canberra: Australian Government Publishing Service, 1985.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

International Symposium on Ladle Steelmaking and Furnaces (1988 Montréal, Quebec). Proceedings, International Symposium on Ladle Steelmaking and Furnaces: August 28-31, 1988, Montreal, Quebec, Canada. Hamilton, Ont: [s.n.], 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "Steel Foundry"

1

Gaye, H., C. Gatellier, and P. V. Riboud. "Physico-Chemical Aspects of the Ladle Desulphurization of Iron and Steel." In Foundry Processes, 333–56. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1013-6_12.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Andrés, A., J. Viguri, P. Bilbao, and A. Irabien. "Metal Lixiviation of Steel Foundry Dust." In Chemistry for the Protection of the Environment, 781–87. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3282-8_67.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Nissen, Bruce. "Chapter 7. Shutdown of a Steel Foundry." In Grand Designs, edited by Charles Craypo and Bruce Nissen, 138–64. Ithaca, NY: Cornell University Press, 2019. http://dx.doi.org/10.7591/9781501733864-010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Wöhrmeyer, C., J. M. Auvray, B. Li, H. Fryda, M. Szepizdyn, D. Pörzgen, N. Li, and W. Yan. "Novel Calcium Magnesium Aluminate Bonded Castables for Steel and Foundry Ladles." In Proceedings of the Unified International Technical Conference on Refractories (UNITECR 2013), 1031–36. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118837009.ch175.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Xiang, Guohui, and Dan Wei. "Yu X v. Inner Mongolia Runpu Iron and Steel Co., Ltd., Ningcheng Xinma Foundry Co., Ltd., et al." In Library of Selected Cases from the Chinese Court, 321–28. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8410-4_32.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Wieser, Peter F. "Filtration of Irons and Steels." In Foundry Processes, 495–512. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1013-6_20.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Terpstra, Marten. "Gas turbine parts, engine parts, machine tools, parts of blast furnaces and various steel foundry equipment and other applications." In Materials for Refractories and Ceramics, 214–36. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4325-4_21.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Borisov, Dimitar. "Multi-Criteria Optimization of the Quality Indicators of Steel Foundry Ladles, Based on Priorities and Weighting Coefficients of the Indicators." In Proceedings of the 4th International Conference on Sustainability in Civil Engineering, 583–92. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2345-8_59.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Weiser, Ingo Felix, Tim Herrig, and Thomas Bergs. "A Model Calculation of CO2 Emissions Saving Potential for Fine Blanking of Inductively Heated Sheet Metal with Comparison of the Product Variants." In Lecture Notes in Mechanical Engineering, 685–93. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-28839-5_77.

Full text

Abstract:

AbstractThe steel processing industry must increasingly question itself with regard to environmental aspects, especially for automobile production. As a consequence of the resulting lightweight construction requirements in the automotive sector, manufacturing processes of industrial relevance must deal with high-strength steels. In case of fine blanking, the process faces its limits already when processing medium-high tensile strength steels because of high tool wear or failure. A promising approach to overcome these process limits is the introduction of heat into the processed metal sheet in order to lower the flow stress of the steel. In order to estimate the sustainability of a fine blanking process with inductively heated sheets, the energy input during heating is investigated in this work. An energy balance is drawn for fine blanking of inductively heated sheets. A further component of the work is the subsequent use phase of the components produced in this way. A consideration of the greenhouse gas emissions savings potential by fine blanking in the German automotive production shows possible future perspectives for manufacturing. It could be found that by substituting standard fine blanking process by inductively heated fine blanking of higher strength steels greenhouse gas emissions can be decreased.

APA, Harvard, Vancouver, ISO, and other styles

10

Xie, Caibo, Songhan Nie, Yiqi Tao, and Zhanpeng Lu. "Correlating IASCC Growth Rate Data to Some Key Parameters for Austenitic Stainless Steels in High Temperature Water." In Springer Proceedings in Physics, 1060–72. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_89.

Full text

Abstract:

AbstractAustenitic stainless steels have been widely used for fabricating reactor core-internal components in PWRs due to its high strength, ductility and fracture toughness. The accelerated failure or degradation of austenitic stainless steel represented by IASCC has become one of the key problems affecting the safe and efficient operation of reaction core-internal in PWR nuclear power plants. IASCC is generally divided into three stages: crack initiation, crack propagation and instable fracture. Among the three stages, the crack initiation stage would occupy the major service time, the crack growth stage is featured by quasi-steady crack propagation at a certain rate, and the instable fracture stage should be avoided. Stress intensity factor K at the crack tip is often used to represent the mechanical driving force for SCC as well as IASCC.In this paper, SCC crack growth rate (CGR) data of austenitic stainless steels irradiated in high temperature water were compiled and reanalyzed to evaluate the influence of key parameters such as radiation dose and mechanical properties on IASCC sensitivity and crack growth rate of these materials in PWR nuclear power plant environment. The CGR-K curves of the irradiated materials were also analyzed. The effects of low, medium and high doses of neutron irradiation are compared, and the analysis process is illustrated with examples. In the research process, abnormal CGR and K of materials under a specific irradiation dose was found, so this phenomenon was analyzed. The CGR data and irradiation dose of austenitic stainless steel in different K range were analyzed. And proposed a way to judge the type of change:type I, type II and type III. Finally, the yield strength of the material under the same irradiation dose was found, and combined with other research data, it was further demonstrated that the neutron irradiation dose had a significant effect on the crack growth rate.

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Steel Foundry"

1

Pribulova, Alena. "RECYCLING IN THE FOUNDRY AND STEEL INDUSTRY." In SGEM2011 11th International Multidisciplinary Scientific GeoConference and EXPO. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2011/s21.111.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

De Schutter, B. "Designing optimal timing and sequencing strategies for a continuous steel foundry." In 1999 European Control Conference (ECC). IEEE, 1999. http://dx.doi.org/10.23919/ecc.1999.7099318.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Kumar, K. P. Bhargav, Geetha Krishna, and B. Umashankar. "Evaluation of Waste Foundry Sand and Blast Furnace Steel Slag as Geomaterials." In Eighth International Conference on Case Histories in Geotechnical Engineering. Reston, VA: American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482148.031.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Rasmeni, Zelda, and Xiaowei Pan. "Increased energy efficiency of a steel foundry plant by using a cleaner production quick-E-scan methodology." In INTERNATIONAL CONFERENCE ON FUNCTIONAL MATERIALS, CHARACTERIZATION, SOLID STATE PHYSICS, POWER, THERMAL AND COMBUSTION ENERGY: FCSPTC-2017. Author(s), 2017. http://dx.doi.org/10.1063/1.4990235.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Zhuang, Z., C. Coffey, P. Jensen, D. Campbell, B. Lawrence, W. Myers, and C. Colton. "173. Effect of Good- And Poor-Fitting Half-Mask Respirators on Protection Under Actual Workplace Environments at a Steel Foundry." In AIHce 2001. AIHA, 2001. http://dx.doi.org/10.3320/1.2765690.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Sytsma, Steve, and Erich Rabassa. "Nano Napier Steel Second Ring for SI Applications." In ASME 2014 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icef2014-5563.

Full text

Abstract:

Piston top compression rings utilized in North American Spark Ignition (SI) passenger car and light truck engines have undergone a significant migration driven by desire to reduce axial height, mass, radial thickness, wear, incidence of risk of foundry defects and to enable utilization of a consistent, global material independent of manufacturing location. Second rings utilized in similar applications are now in the earlier stages of a similar migration. This paper will present product development of an innovative steel second ring including engine testing (blowby, and lube oil consumption via radiometric tracer method), supplemented by simulation modeling utilizing MIT code, including several more conventional ring cross sectional alternatives.

APA, Harvard, Vancouver, ISO, and other styles

7

Campo, L., M. Hanchi, E. Polledri, L. Olgiati, S. Sucato, D. Saidane Mosbahi, and S. Fustinoni. "1282 Urinary 8-oxo-7,8-dihydro-2′-deoxyguanosine in tunisian electric steel foundry workers exposed to polycyclic aromatic hydrocarbons and metals." In 32nd Triennial Congress of the International Commission on Occupational Health (ICOH), Dublin, Ireland, 29th April to 4th May 2018. BMJ Publishing Group Ltd, 2018. http://dx.doi.org/10.1136/oemed-2018-icohabstracts.1135.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Neyhouse, Jeffrey R., Jose M. Aurrecoechea, J. Preston Montague, and John D. Lilley. "Cast Iron-Nickel Alloy for Industrial Gas Turbine Engine Applications." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68837.

Full text

Abstract:

Austenitic ductile iron castings have traditionally been used for gas turbine exhaust components that require castability, good machinability, low thermal expansion, and high strength at elevated temperatures. The achievement of optimum properties in austenitic ductile irons hinges on the ability of the foundry to produce nodular graphite in the microstructure throughout the component. In large, complex components, consistently producing nodular graphite is challenging. A high-nickel steel alloy that is suitable for sand castings has been recently developed for industrial gas turbine engine applications. The alloy exhibits similar mechanical and physical properties to austenitic ductile irons, but with improved processability and ductility. This alloy is weldable and exhibits no secondary graphite phase. This paper presents the results of a characterization program conducted on a 35% nickel, high-alloy steel. The results are compared with an austenitic ductile iron of similar composition. Tensile and creep properties from ambient temperature to 760°C (1400°F) are included, along with fabrication experience gained during the manufacture of several sand cast components at Solar Turbines Incorporated. The alloy has been successfully adopted for gas turbine exhaust system components and other applications where austenitic ductile irons have traditionally been utilized. The low carbon content of austenitic steels permits improved weldabilty and processing characteristics over austenitic ductile irons. The enhancements provided by the alloy indicate that additional applications, as both austenitic ductile iron replacements and new components, will arise in the future.

APA, Harvard, Vancouver, ISO, and other styles

9

Zonco, Audrey, Bastiaan Göttgens, Kieran O'Riordan, Che Liu, and Dominique Rat. "Exploring circularity: Europengineers on piano." In IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/ghent.2021.0141.

Full text

Abstract:

<p>Europengineers organized a design sprint on the theme of reuse, which took place at Setec’s headquarters from the 20th to 22nd February 2020. This was based on a study case: how could the 80 steel frames in the Thales factory be saved from the foundry and reused in another project? What barriers and difficulties would be encountered in such a project?</p><p>The teams of twenty engineers shed light on the design stages (find the client, use and shape), the technical challenges (Structural diagnosis and reliability, dismantling, storage) and marketing issues (marketplace, insurability).</p>

APA, Harvard, Vancouver, ISO, and other styles

10

Zonco, Audrey, Bastiaan Göttgens, Kieran O'Riordan, Che Liu, and Dominique Rat. "Exploring circularity: Europengineers on piano." In IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/ghent.2021.0141.

Full text

Abstract:

<p>Europengineers organized a design sprint on the theme of reuse, which took place at Setec’s headquarters from the 20th to 22nd February 2020. This was based on a study case: how could the 80 steel frames in the Thales factory be saved from the foundry and reused in another project? What barriers and difficulties would be encountered in such a project?</p><p>The teams of twenty engineers shed light on the design stages (find the client, use and shape), the technical challenges (Structural diagnosis and reliability, dismantling, storage) and marketing issues (marketplace, insurability).</p>

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Steel Foundry"

1

Smith, J. D., and K. D. Peaslee. Final Scientific Report Steel Foundry Refractory Lining Optimization. Office of Scientific and Technical Information (OSTI), December 2002. http://dx.doi.org/10.2172/805266.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Frank Peters. Reduction in Energy Consumption & Variability in Steel Foundry Operations. Office of Scientific and Technical Information (OSTI), May 2005. http://dx.doi.org/10.2172/840822.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

F. Peters. FINAL REPORT: Reduction in Energy Consumption and Variability in Steel Foundry Operations. Office of Scientific and Technical Information (OSTI), May 2005. http://dx.doi.org/10.2172/840273.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Parkins. L51806 Effects of Hydrogen on Low-pH Stress Corrosion Crack Growth. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), July 1998. http://dx.doi.org/10.55274/r0010142.

Full text

Abstract:

There is circumstantial evidence of hydrogen playing a role in, so called, low pH SCC of pipeline steel, but direct evidence for such is lacking. Resolution of this situation is of practical importance because of its implications for modeling. Thus, existing models for high pH SCC of pipelines are based upon a dissolution controlled mechanism of crack growth, but such models will not be applicable to low pH SCC if hydrogen is involved with the latter. Measurements have been made of the permeation of hydrogen into X52 and X60 pipeline steels at various potetials while exposed to a simulated ground water containing different amounts of carbon dioxide, related to the conditions thought to be associated with transgranular stress corrosion cracking of pipelines. As a consequence of these measurements it is now known unequivocally that hydrogen enters the steel for all such solutions over wide ranges of potential, including those most likely involved in the cracking of pipelines, and with such entry enhanced as the amount of carbon dioxide present in the solution increased. For a given set of environmental conditions, it was found that films on the surface of the pipe, such as may exist in service conditions, could hinder, but not prevent, the ingress of hydrogen. Hydrogen in steel is usually regarded as being trapped at dislocations, grain boundaries or interfaces between the matrix and second phase particles and measurements relating to such indicate that the X60 steel contains appreciably fewer traps than the X52 steel for equivalent charging conditions. However, the trapped hydrogen was found to have no significant influence on the ductility of the steels when subsequently tested in air, although the ductility was impaired by thxe continued ingress of hydrogen when equivalent tests were conducted in the presence of the charging solution. No convincing evidence has been obtained for the ingress of hydrogen into the steels facilitating the early stages of plasticity under exposure conditions relating to those involved in low pH stress corrossion cracking. The most probable mechanism of stress corrosion crack growth in pipeline steel in the solutions studied and at potentials likely to obtain in service involves both dissolution and hydrogen ingress to the steel, although the interactions of those two factors in the fracture process remain speculative.

APA, Harvard, Vancouver, ISO, and other styles

5

Leis. L51845 Database of Mechanical and Toughness Properties of Pipe. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 2000. http://dx.doi.org/10.55274/r0010150.

Full text

Abstract:

�The lower-strength grades of steel used for transmission pipelines into the 60s were much like those used in other steel construction in that era. These steels gained strength by traditional hardening mechanisms through chemistry changes, largely involving carbon and manganese additions. Improvement of these grades, primarily through control of ingot chemistry and steel processing, became necessary when running brittle fracture was identified as a failure mechanism in gas-transmission pipelines in the late 50s. Eventually, this avenue to increasing strength was exhausted for pipeline applications because this approach causes increased susceptibility to hydrogen-related cracking mechanisms as strength increases. For this reason, modern steels differ significantly from their predecessors in several ways, with the transition from traditional C-Mn ferrite-pearlite steels beginning in the mid 60s with the introduction of high-strength-low-alloy (HSLA) steels. This report presents the results of projects, PR-3-9606 and PR-3-9737, both of which were planned as multi-year projects. The first of these projects initially was conceived to provide broad evaluation of the fitness-for-service of wrinkle bends while the second was conceived to generate mechanical and fracture properties data for use in the integrity analysis of both the pipe body and weld seams in modern gas-transmission pipeline systems. As possible duplication between a joint industry project and the PRCI project became apparent, this project was scaled back to focus on properties of steels used in construction involving wrinkle bends. Consideration also was given to a more modern steel such as might be found in ripple bends, which are formed in bending machines that now have become widely used. The second project likewise was reduced in scope, with a focus on only the pipe body. Because both projects ended being centered on mechanical and fracture properties, both are presented in this combination report.

APA, Harvard, Vancouver, ISO, and other styles

6

Pargeter. L51579 Field Weldability of High Strength Pipeline Steels. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), March 1988. http://dx.doi.org/10.55274/r0010292.

Full text

Abstract:

There are a number of economic advantages that arise through using high strength pipeline steels. The reduced wall thickness leads to lower steel tonnage requirements and provides scope for reducing welding time. Until relatively recently, the API specification 5L�" Specification for Linepipe" only covered steels up to 70 ksi minimum yield strength. This document reports on small scale weldability tests on two X80 grade steels and presents mechanical property data on full-size circumferential girth welds. Small scale SMA weldability was assessed using the WIC test with cellulosic consumables of matching strength. Weld metal, rather than HAZ, hydrogen cracking was found to occur at preheat temperatures below approximately 110 C (230 F). Heat affected zone cracking was not observed in any of the WIC tests.

APA, Harvard, Vancouver, ISO, and other styles

7

Bond, Robert Bailey. Design of steel headed stud anchors in concrete-filled steel composite deck. Northeastern University, 2022. http://dx.doi.org/10.17760/d20473849.

Full text

Abstract:

This paper reports common failure mechanisms of steel headed stud anchors (shear studs) in concrete-filled steel composite decks found in the literature comprised through an extensive database of push-out tests representing multiple shear stud configurations used in composite construction around the world. Monotonically and cyclically loaded push-out test specimens perpendicular or parallel steel deck, or in solid slabs, are included in the evaluation. Comparisons to experimental strengths are made with the steel headed stud anchor strength prediction methods from various international Codes and Standards along with other mechanics-based design provisions proposed in the literature. It was found that the prediction for concrete failure modes is often over-predicted, especially in deck perpendicular configurations. Two alternative design equations are presented within the context of the AISC Specification to address consideration for concrete related failures and are validated through comparisons both with push-out tests and composite beam tests found in the literature.

APA, Harvard, Vancouver, ISO, and other styles

8

Bowman, Mark D., Bryan D. Hagan, and William D. Hurdle. Steel Bridge Coating Evaluation and Rating Criteria. Purdue University, 2023. http://dx.doi.org/10.5703/1288284317386.

Full text

Abstract:

The aim of the study is to gather information on three topics: (1) the evaluation and rating of steel bridge protective coatings, (2) coating systems used by various states throughout the United States, and (3) maintenance painting procedures employed by various state department of transportation agencies (DOTs). First, it was found that most state DOTs use either an Element Level type rating of the coating system or a 9–0 NBI type rating; many state DOTs use both methodologies, with one used for state bridges and the other for local bridges. Second, for coating systems, it was found that there is a great deal of uniformity of the steel bridge coating systems used in the United States, with three-coat paint systems being the most common. Third, it is believed that maintenance painting can extend the useful life of bridge coatings. However, many state DOTs report that the cost of maintenance painting has increased due to many factors that involve available personnel, proper training, and increased regulations on the removal and application of steel bridge coatings. Consequently, many DOTs no longer perform maintenance painting, other than emergency repairs, and simply wait until the entire bridge needs to be re-coated and contract the work out. Lastly, an NBI 9–0 type rating procedure for steel bridge coatings is proposed for possible consideration and implementation by INDOT.

APA, Harvard, Vancouver, ISO, and other styles

9

Acosta, Felipe, and Guillermo Riveros. Repair of corroded steel girders of hydraulic steel structures (HSS) using fiber-reinforced polymers (FRP). Engineer Research and Development Center (U.S.), August 2023. http://dx.doi.org/10.21079/11681/47404.

Full text

Abstract:

Although steel hydraulic structures have a protective system to prevent corrosion, this type of deterioration will eventually occur due to the constant exposure to harsh environmental conditions. There are several techniques that can be implemented to repair corroded steel structural elements. This report presents a numerical study to evaluate the mechanical behavior of corroded steel girders used in hydraulic steel structures and to evaluate several carbon fiber–reinforced polymers (CFRP) layups to repair them. The girders were modeled as simply supported with four-point loading boundary conditions. The corrosion deterioration was modeled as loss in section as 10%, 25%, and 40%. The effectiveness of the deterioration was established based on the level of stresses at the steel compared with the undamaged condition after it is strengthened with CFRP. It was found that CFRP repair is more practical for reducing the stresses at the steel in the shear dominated zone if deterioration is below 25%. At the tensile dominated zone, CFRP is effective for reducing the stresses for deterioration below 40%.

APA, Harvard, Vancouver, ISO, and other styles

10

Pound. L52104 Differentiation of Corrosion Mechanisms by Morphological Feature Characterization. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), August 2004. http://dx.doi.org/10.55274/r0011097.

Full text

Abstract:

Corrosion of liquid and gas pipelines can occur by various mechanisms. The ability to differentiate between mechanisms is crucial if corrosion control measures are to be effective. The objective of this work was to determine whether corrosion of pipeline steels results in characteristic morphological features that are diagnostic for specific corrosion mechanisms, particularly with regard to microbiologically influenced corrosion (MIC). Coupons of 1018 carbon steel were exposed for two weeks in 5 wt% NaCl under abiotic and biotic conditions in different environments (N2, N2-CO2, and N2-H2S). Pitting occurred in all environments both with and without bacteria present. Many of the pits formed under biotic conditions were similar in morphology to those formed under abiotic conditions. However, other pits exhibited a different morphology from the abiotic pits in the N2 and N2-CO2 environments. In the N2-H2S environment, the presence of bacteria did not result in any discernible differences in pit morphology. The biotic pits in the N2 and N2-CO2 environments were similar in shape and size to those previously found on pipeline steel in a biotic culture medium, where MIC was essentially the sole cause of pitting. Thus, identification of pits associated with MIC appears feasible for natural gas environments.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!