Relevant bibliographies by topics / Casting powder

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Casting powder'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Casting powder"

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Dević, Snezana, and R. Carli. "Effect of Wolastonite Mineral (CaO SiO2) Content in Continuous Casting Powder to SEN Erosion." Key Engineering Materials 352 (August 2007): 107–10. http://dx.doi.org/10.4028/www.scientific.net/kem.352.107.

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The basic idea of the work was to analyze the effect of the wollastonite mineral CaO SiO2 content in the continuous casting powder related to the SEN erosion. In order to realize the research, experiments were conducted in the laboratory conditions. The research, experiment, was realized in the Magnohrom Kraljevo laboratory, and cryptonym furnace EV16 was used for refractory material behavior. Cut SEN pieces from the slag zone in the reduction atmosphere were treated in the furnace with three types of casting powder of different mixtures ratio of SRD1 (without wollastonite) and SRD2 (with wollastonite): Casting powder 1 - SRD1/SRD2 = 50/50 %, Casting powder 2 - SRD1/SRD2 = 25/75 % and Casting powder 3 - SRD1/SRD2 = 75/25 %. Temperature of the experiment was in the range of 15200C – 15400C, and treatment time was changed simulating the average casting time of the heat; one heat (45 min), two heats (90 min), and three heats (135 min). The experiment pointed out that the erosion of the SEN was reduced with the increased ratio of wollastonite in the casting powder. The erosion rate of the SEN exposed to the casting powder 2 in the laboratory conditions was 0.0055 mm/min, whilst the erosion rate of the SEN exposed to the casting powder 3 (with the least wollastonite content) was 0.0075 mm/min. Erosion rate of SEN exposed to the casting powder 2 was lower for the 26.27 % related to the casting powder 3, and 17.90% lower than the erosion rate of the casting powder 1 (the erosion rate of the casting powder 1 was 0.0067 mm/min). These laboratory experiments are very consistent with results obtained in the plant conditions [1,2,3]. At that time, results indicated that SRD1 casting powder without wollastonite has the erosion rate 46 % higher than SRD2 casting powder with wollastonite. On the basis of the laboratory researches and earlier plant conditions researches it could be concluded that wollastonite mineral content in the casting powders has significant effect on the SEN erosion, in the way that the SEN erosion rate was decreased with the increased wollastonite content in the casting powders.
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Sheleg, V. K., M. A. Levantsevich, Y. V. Pilipchuk, M. A. Kravchuk, I. A. Bogdanovich, and T. Ya Bogdanova. "Alloying the Melt of Sliding Bearings Based on Babbitt." Science & Technique 19, no. 6 (November 27, 2020): 475–79. http://dx.doi.org/10.21122/2227-1031-2020-19-6-475-479.

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Abstract. A device design is proposed that makes it possible to obtain composite castings of sliding bearings based on babbitt by mixing alloying additives from antifriction powders of solid lubricants (graphite, molybdenum disulfide, etc.) into the melt, having a density significantly lower than the density of babbitt itself. The principle of mixing is based on the use of numerous turbulent flows resulting from the rotation of a gating rod with a wire pile in the melt material, the packing density coefficient of which is not less than 0.1. Due to the suction effect of these flows, non-metallic particles of solid lubricant powder do not float to the surface of the melt and, after crystallization, remain in the body of the casting. The supply of alloying powder of solid lubricant is carried out simultaneously with the supply of the babbitt melt through the central and distribution gating channels made in a rotating rod. Under the action of centrifugal forces, powder particles and melt material flow through distribution channels to the walls of the mold (mold), passing through the rotation zone of the metal pile. In this case, intensive mixing of the powder particles with the melt material occurs due to the suction effect of turbulent flows arising behind the moving pile. In addition, as a result of the rotation of the wire pile, dendritic constituents are crushed in babbitt castings. Metallographic studies of the castings obtained on the developed device have shown that the structure of the casting obtained by traditional technology contains large quantities of solid crystals of intermetallic compounds SnSb and Cu3Sn, while in the structure of the casting obtained using the proposed device, along with the aforementioned intermetallic compounds, particles of solid lubricant C + MoS2 powder embedded in the crystallized melt are observed.
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Hariharan, Ashok, and Samir Kumar Mozumdar. "Evolution of Mould Fluxes." Advanced Materials Research 794 (September 2013): 75–89. http://dx.doi.org/10.4028/www.scientific.net/amr.794.75.

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Mould flux was invented for bottom poured ingots using fly ash as raw material. It transited subsequently to synthetic raw materials. As continuous casting of steel developed, Fluxes in fine powder form evolved culminating to the development of environment friendly fluxes in granular form. As continuous casting of stainless steel commenced different powders were developed for different Stainless qualities like austenitic, ferritic etc. Powders developed from interface with users were not only to satisfy demand of lubrication in the mould but also for adequate heat transfer and better surface quality. Shrinkage in mould, interplay of the elements in steel during casting with mould slag, tendency of the steel grades towards cracking or sticking and influence of various casting parameters determined mould powder development and usage. In-mould Powder performance dynamically reacts to changes in casting parameters and conditions and appropriate changes in powder chemistry can overcome or minimise detrimental effects of such changes. Future demands of overall cost control, better surface quality, minimal grinding, stable meniscus will guide powder research and development alongwith focus on environmental concerns.
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McKay, S., N. S. Hunter, A. S. Normanton, V. Ludlow, P. N. Hewitt, and B. Harris. "Continuous casting mould powder evaluation." Ironmaking & Steelmaking 29, no. 3 (June 2002): 185–90. http://dx.doi.org/10.1179/030192302225004142.

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Znamenskii, L. G., A. N. Franchuk, and A. A. Yuzhakova. "Nanostructured Materials in Preparation Casting Alloys." Materials Science Forum 946 (February 2019): 668–72. http://dx.doi.org/10.4028/www.scientific.net/msf.946.668.

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The article deals with technologies of refining and inoculating casting alloys with the use of nanostructured diamond powder, as well as stimulation technique on molten metal including processing of the liquid alloy with nanosecond electromagnetic pulses. The developed method of cast iron inoculation allows to eliminate the flare and to increase the physical and mechanical properties of the castings through the grain refining and the decrease of chilling tendency during crystallization of the liquid alloy. Inoculating of aluminium alloys by high-melting particles of a nanostructured diamond powder leads to the grinding of structural constituents, including conditions for dispersing hardening intermetallics during postbaking of such castings. As a result, foundry and physicomechanical properties of castings are significantly improved.
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Kim, Woo Chang, and Jong Kook Lee. "Effect of Powder Characteristics on Slip Casting Fabrication of Dental Zirconia Implants." Journal of Nanoscience and Nanotechnology 20, no. 9 (September 1, 2020): 5385–89. http://dx.doi.org/10.1166/jnn.2020.17610.

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Dense zirconia compacts were fabricated by slip casting and sintering of nanoscale zirconia powders, and the effect of the powder characteristics (crystallite size, specific surface area, yttria content, and agglomeration) on the slurry and sintered properties was investigated. Three types of commercial 3 mol% yttria-stabilized tetragonal zirconia polycrystals powders were used as the starting powders after the powder characteristic analysis. A zirconia slurry for slip casting was prepared by mixing zirconia powder (solid loading of 60, 65, and 70 wt.%), distilled water, and a dispersant of Darvan C. The green compacts obtained from slip casting were cold isostatic pressed to enhance the close packing and densified by sintering at 1450 °C for 2 h. Highly dense zirconia compacts with a relative density of 99.5% and grain size of 350 nm were obtained based on the powder type and solid loading in the slurry. The microstructure and mechanical hardness of the sintered specimen after slip casting were dependent on the yttria content in the 3 mol% yttria-stabilized tetragonal zirconia polycrystal powder and the solid loading within the slurry.
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Ardelean, Marius, Alina Lăscuțoni, Erika Ardelean, and Ana Socalici. "Optimization of Synthetic Slag Additions Used in Continuous Casting of Steel." Solid State Phenomena 254 (August 2016): 176–81. http://dx.doi.org/10.4028/www.scientific.net/ssp.254.176.

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The appropriate use and in adequate quantities of synthetic slags in continuous casting process (insulating coating powder in tundish and respectively lubricant molding powder in crystallizer) gives a good quality of continuous castings products. The paper presents two methods of determining the necessary of slags: using dispersion analysis software Minitab.v17 and optimization of heat transfer in tundish, depending on powder coating thickness, performed with a program made in Mathcad14 and respectively optimization of the molding powder thickness, using an own simulation program. Both methods are based on the properties of steel grade which is casted (in particular the liquidus temperature of the steel) and they can be adapted to the specifics of the continuous steel casting machines.
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Stobierski, Ludosław, Jerzy Lis, and Agnieszka Gubernat. "SiC Powder for Casting from Aqueous Suspension." Advances in Science and Technology 45 (October 2006): 297–302. http://dx.doi.org/10.4028/www.scientific.net/ast.45.297.

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The activation of silicon carbide by boron and carbon is required to obtain dense monophase sintered body from SiC powder. The presence of carbon renders casting from aqueous suspension impossible. The SiC powders with boron and extra carbon were prepared by combustion method (SHS), where carbon was bound to SiC particles in a stable way. The experiments showed that this powder could be used for processing by casting of aqueous suspension. Finally nearly dense polycrystals were obtained by pressureless sintering.
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Singh, Satnam, Dheeraj Gupta, and Vivek Jain. "Microwave melting and processing of metal–ceramic composite castings." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 232, no. 7 (September 1, 2016): 1235–43. http://dx.doi.org/10.1177/0954405416666900.

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Applications of metal–ceramic composites are increasing in advanced materials field; however, efficient utilization of these materials depends on the cost involved in processing and structure–properties correlations. Processing of materials through microwave energy has already been accepted as a well-established route for many materials. In this work, composites of nickel-based metallic powder (matrix) and SiC powder (reinforcement) were successfully casted by microwave heating. The mechanism for the development of composite castings using microwaves is discussed with proper illustrations. The results of microstructure analysis of the developed cast revealed that uniform equiaxed grain growth with uniform dispersion of reinforcement. The results of X-ray diffraction analysis revealed that during microwave heating some metallurgical changes took place, which led to higher microhardness of cast. Micowave processed casting revealed lower defects (~1.75% porosity) and average Vickers microhardness of 920 ± 208 HV. This work reports the successful applications of microwaves in manufacturing, in the form of melting and casting of metallic powders.
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Xu, Ying, and Li Guang Zhu. "Study and Application on Crystallization Temperature of Mould Powder for High-Speed Continuous Casting." Advanced Materials Research 197-198 (February 2011): 677–81. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.677.

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Crystallization rule of mould powder for high-speed continuous casting was studied and the suitable composition powder was done. The analysis of experiment shows: in the given range, the influencing order of different fluxing agents for the crystallization temperature is: Li2O> BaO> B2O3> Na2O> CaF2> MgO. According to different solidification characteristics of steel and the requirements to the performance of mould power, component design of mould powder for high-speed continuous casting was done from the perspective of the crystallization characteristics.
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Dissertations / Theses on the topic "Casting powder"

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Pereira, M. F. V. T., M. Williams, and Preez W. B. Du. "Characterization of metal powder based rapid prototyping components with respect to aluminium high pressure die casting process conditions." Journal for New Generation Sciences, Vol 8, Issue 2: Central University of Technology, Free State, Bloemfontein, 2010. http://hdl.handle.net/11462/563.

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Published Article
This paper is based on tests performed on die component specimens manufactured by EOS-DMLS (direct metal laser sintering) and LENS (laser engineered net shape) RP (rapid prototyping) technology platforms, as well as manufactured specimens machined out of preferred standard hot work steel DIN 1.2344. These specimens resemble typical components used in metal high pressure die casting tool sets. The specimens were subjected to a programme of cyclic immersion in molten aluminium alloy and cooling in water-based die release medium. The heat checking and soldering phenomena were analyzed through periodic inspections, monitoring crack formation and evidence of surface washout. At the end of the thermal tests, mechanical strength and hardness tests were performed to assess toughness and core resistance variations in relation to the initial conditions. Finally metallographic investigations were performed through optical microscopy on all the specimens considered. The outcomes of this research will be presented and used by the CSIR for further development and application of the assessed EOS-DMLS and LENS rapid prototyping technologies in rapid die manufacturing techniques and die design principles, including time and economic feasibility criteria to be applied when considering rapid die manufacture.
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Pinheiro, Carlos A. M. "Mould thermal response, billet surface quality and mould-flux behaviour in the continuous casting of steel billets with powder lubrification." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/nq27226.pdf.

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Ragnarsson, Lars. "Formation of non-metallic inclusions and the possibility of their removal during ingot casting." Doctoral thesis, KTH, Mikro-modellering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12458.

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The present study was carried out to investigate the formation and evolution of non-metallic inclusions during ingot casting. Emphasize have been on understanding the types of inclusions formed and developed through the casting process and on the development of already existing inclusions carried over from the ladle during casting. Industrial experiments carried on at Uddeholm Tooling together with laboratory work and Computational Fluid Dynamics (CFD) simulations. Ingots of 5.8 tons have been sampled and the types of inclusions together with their distribution within the ingot have been characterized. Two new types of inclusions have been found. Type C1 is found originated from casting powder and in the size from a few μm to 30 μm. Type C2 is of macro inclusion type sizing up to 70 μm. The presence of C2 inclusions are few but very detrimental for the quality of the steel. Both types, C1 and C2 consist of alumina, indicating that reoxidation is the main reason for their existence. The protecting argon shroud has been studied by the use of a 1:1 scaled 2D model. Both flow pattern and oxygen measurement have been carried out. CFD has also been used as an auxiliary tool. It has been found that the oxygen pickup through argon gas shroud depends mostly on the distance between the ladle and the collar placed on top of runner. Further increase of gas flow rate above 2.5 m3.h-1 had very little effect on the oxygen distribution since both the flushing effect and the entraining effect with respect to oxygen are enhanced by further increase of inert gas flow rate. In the case of dual gas inlet, the flow in the shroud was found much less diffused compared with either vertical or horizontal injection system. The oxygen content in this arrangement was also greatly reduced. Studies of the runner after casting revealed a sparse non-metallic network structure around the periphery of the steel rod remained in the runner. The surface of the refractory had been severely attacked by the mechanical force from the streaming steel. The erosions of the centre stone and the end stone were on the other hand negligible. CFD calculations showed that the flow at those locations is almost stagnant. The surface of the refractory in contact with the steel was found to have an increased content of alumina. The source for the alumina could come from either exchange reaction of dissolved aluminium replaces the silica or reoxidation products origin from oxygen pick up during the transfer from the ladle to the vertical runner. Inclusions were also found entrapped in the steel refractory interface. It was also found that a formation of a liquid slag film as early as possible during casting would increase the possibility to remove inclusions and especially inclusions generated by the casting powder.
QC 20100617
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Pereira, Manuel Filipe Viana Teotonio. "ADDITIVE MANUFACTURING OF COMPONENTS FOR IN-DIE CAVITY USE, SUITABLE TO WITHSTAND ALUMINIUM HIGH PRESSURE DIE CASTING (HPDC) PROCESS CONDITIONS." Thesis, Bloemfontein: Central University of Technology, Free State, 2013. http://hdl.handle.net/11462/243.

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Thesis (M. Tech. (Engineering: Mechanical)) -- Central University of Technology, Free State, 2013
This research examines the suitability of Additive Manufacturing (AM) for manufacturing dies used in aluminium high pressure die casting. The study was guided by the following objectives: • The reviews of applicable literature sources that outline technical and application aspects of AM in plastic injection moulds and the possibilities of applying it to high pressure casting die. • To introduce AM grown die components in die manufacture. Further, to develop a methodology that will allow industry to apply AM technology to die manufacture. • Revolutionise the way die manufacture is done. The potential for AM technologies is to deliver faster die manufacture turnaround time by requiring a drastically reduced amount of high level machining accuracy. It also reduces the number of complex mechanical material removal operations. Fewer critical steps required by suitable AM technology platforms able to grow fully dense metal components on die casting tools able to produce production runs. • Furthermore, promising competitive advantages are anticipated on savings to be attained on the casting processing side. AM technology allows incorporation of features in a die cavity not possible to machine with current machining approaches and technology. One such example is conformal cooling or heating of die cavities. This approach was successfully used in plastic injection mould cavities resulting in savings on both the part quality as well as the reduction on cycle time required to produce it (LaserCUSING®, 2007). AM technology has evolved to a point where as a medium for fast creation of an object, it has surpassed traditional manufacturing processes allowing for rapidly bridging the gap between ideas to part in hand. The suitability of the AM approach in accelerating the die manufacturing process sometime in the near future cannot be dismissed or ignored. The research showed that there is promise for application of the technology in the not too distant future. In the South African context, the current number and affordability of suitable AM platforms is one of the main stumbling blocks in effecting more widespread applied research aimed at introduction of the technology to die manufacture.
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Attar, H., M. Bönisch, M. Calin, L. C. Zhang, K. Zhuravleva, A. Funk, S. Scudino, C. Yang, and J. Eckert. "Comparative study of microstructures and mechanical properties of in situ Ti–TiB composites produced by selective laser melting, powder metallurgy, and casting technologies." Cambridge University Press, 2014. https://tud.qucosa.de/id/qucosa%3A39023.

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This study presents results of selective laser melting (SLM), powder metallurgy (PM), and casting technologies applied for producing Ti–TiB composites from Ti–TiB₂ powder. Diffraction patterns and microstructural investigations reveal that chemical reaction occurred between Ti and TiB₂ during all the three processes, leading to the formation of Ti–TiB composites. The ultimate compressive strength of SLM-processed and cast samples are 1421 and 1434 MPa, respectively, whereas the ultimate compressive strengths of PM-processed 25%, 29%, and 36% porous samples are 510, 414, and 310 MPa, respectively. The Young’s moduli of porous composite samples are 70, 45, and 23 GPa for 25%, 29%, and 36% porosity levels, respectively, and are lower than those of SLM-processed (145 GPa) and cast (142 GPa) samples. Fracture analysis of the SLM-processed and cast samples shows shear fracture and microcracks across the samples, whereas failure of porous samples occurs due to porosities and weak bonds among particles.
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Pereira, Márcia Maria da Silva Monteiro. "Desenvolvimento de pó fluxuante sem flúor para o lingotamento contínuo de placas de aço baixo carbono." Universidade de Taubaté, 2015. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=808.

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Há uma clara tendência na indústria para eliminar o flúor dos pós fluxantes usados durante o lingotamento contínuo de aços, pois, embora o flúor seja importante no comportamento de fusão, infiltração e cristalização do filme de escória, ele evolui facilmente a partir de escórias para substâncias gasosas prejudiciais à saúde, como o ácido fluorídrico. Além disso, os compostos contendo flúor ocasionam problemas de armazenamento, de utilização de resíduos sólidos e contribui para a corrosão dos equipamentos. Com a finalidade de retirar o flúor da formulação desses pós, foi desenvolvida uma formulação isenta de flúor, para a aplicação em aços baixo carbono, utilizando óxido de boro. A fim de comparar o comportamento do produto desenvolvido com o do produto tradicional, foram realizados testes laboratoriais e industriais. Nos testes laboratoriais, o produto isento de flúor apresentou menor velocidade de fusão, temperatura de fusão mais baixa, menor cristalinidade e menor viscosidade que o pó tradicional. Nos ensaios industriais, a absorção de alumina foi maior para o produto sem flúor que também obteve uma redução significativa da corrosão da válvula submersa, porém apresentou um menor consumo de pó. Com a finalidade de corrigir o baixo consumo de pó, realizou-se um ajuste na viscosidade da formulação desenvolvida e um novo ensaio, no qual o consumo de pó foi similar ao do produto tradicional. Dessa forma, conclui-se que a formulação desenvolvida e testada pode ser utilizada em substituição da formulação tradicional.
There is a clear trend in the industry to eliminate fluorine from mould powders used during continuous casting of steel, even fluorine is important in the melting behavior, infiltration and slag film crystallization, it evolves from the slags to gases that are harmful to health, such as hydrofluoric acid. Furthermore, the compounds that contain fluorine can cause storage problems, use of solid residues and contribute to the corrosion of the equipment. In order to remove fluorine from the formulation of these powders, a fluor free formulation has been developed for use in low carbon steels, by using boron oxide. For the purpose of to compare the behavior of the product developed with the traditional products, industrial and laboratory tests were performed. In the lab tests the fluor free material showed lower melting speed, lower melting temperature, lower crystallinity, lower viscosity and higher fluidity than the recipe with fluorine. In the industrial tests, the alumina absorption was higher for recipe without fluorine which also obtained a significant reduction in corrosion of the submerged valve, SEN, but presented a lower powder consumption. In order to correct the low consumption, an adjustment of the viscosity of this recipe was made, and a new industrial test showed that the powder consumption of the recipe without fluorine was similar to the recipe with fluorine. Thus, it demonstrates that the recipe without fluorine can be used in an industrial scale replacing the recipe with fluorine.
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Pereira, Helena Ravache Samy. "Proposta de formulação de argamassas para assentamento e revestimento de paredes e tetos com incorporação de pó de exaustão de fundição." Universidade do Estado de Santa Catarina, 2014. http://tede.udesc.br/handle/handle/613.

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Made available in DSpace on 2016-12-08T15:56:17Z (GMT). No. of bitstreams: 1 resumo tese.pdf: 15008 bytes, checksum: b3fcb8e618165bdab7dabdeefc264a32 (MD5) Previous issue date: 2014-08-18
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
The use of casting waste powder from industry in mortars brings environmental benefits by minimizing the impact caused by the disposal of waste on the environment. Casting exhaust powder is a waste product from the regeneration of sand molds from the core making process sector from a foundry industry located in Joinville/SC. This work aims to propose a formulation method for laying mortars, and wall and ceiling coating mortars incorporating casting waste powder whose use would result in a product with adequate technical performance. The fine aggregates, the casting waste powder and mortars were characterized by standard assays, electron microscopy and X-ray powder diffraction. The laying and coating mortar compositions were based on a system of equations obtained using the mixture design methodology. Through this study, results of experimental character and a method for formulating mortars that can be useful in the construction sector were obtained, thus contributing to a better understanding of the use of casting waste in mortars.
O uso de resíduos de fundição como o pó de exaustão em argamassas traz benefícios ambientais através da minimização do impacto causado pelo descarte do resíduo no meio ambiente. O pó de exaustão de fundição é um resíduo proveniente da regeneração dos moldes de areias do setor de macharia de uma indústria de fundição localizada em Joinville/SC. Este trabalho tem por objetivo propor um método de formulação para argamassas de assentamento e revestimento de paredes e tetos com incorporação de pó de exaustão cuja utilização resulte em um produto com desempenho técnico adequado. Os agregados miúdos, o resíduo pó de exaustão de fundição e as argamassas foram caracterizados por ensaios normalizados, microscopia eletrônica e difração de raios-X. As composições das argamassas em massa foram obtidas através de planejamento de experimentos de delineamento por misturas. A proposta de formulação de argamassas de assentamento e revestimento de paredes e tetos foi baseada na resolução de sistemas de equações obtidas através do modelamento estatístico das propriedades. Por meio deste estudo, foram obtidos resultados de caráter experimental e um método de formulação de argamassas que podem ser úteis ao setor de construção civil, contribuindo desta forma com o melhor entendimento do uso de resíduos de fundição em argamassas.
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Yang, Zhengtao. "CHARACTERIZATION AND AQUEOUS COLLOIDAL PROCESSING OF TUNGSTEN NANO-POWDERS." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2693.

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Extensive attention has been paid to consolidate nanoparticles into nanocrystalline components that possess better properties than their coarse-grained counterparts. Nanocrystalline monolithic tungsten (W) has been envisaged to possess better properties than coarse-grained tungsten and to improve the performance of many military components. Commercially available nano-W powders were characterized via X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES) and Brunauer, Emmett, and Teller (BET) measurement. While the bulk of nano-W powders consisted of bcc-W as confirmed by XRD and TEM, much of their surface consisted of WO3 with traces of WO2 and WC. Despite the irregular morphology and agglomerates greater than 1 m in size, the diameter of individual nano-W powders ranged from 30 to 100 nm with a surface area of 10.4 m2/g. To obtain green bodies of higher densities and more homogeneous microstructures after consolidation, W nanopowders were de-agglomerated in water and slip cast in plaster molds. De-agglomeration in water was conducted by repeated ultrasonication, washing, centrifuge and pH adjustment. The change in particle size and morphology was examined via SEM. After the initial surface oxide was removed by repeated washing, the reactivity of W nanoparticles to water was somewhat inhibited. Increasing the number of cycles for ultrasonication and washing increased the pH, the degree of de-agglomeration and the stability of W suspension. The zeta potential was more negative with increasing pH and most negative at pH values close to 5. Viscosity also decreased with increasing pH and reached a minimum at a pH 5. To obtain the highest solid loading with the lowest viscosity, the pH value of W suspension was adjusted to 5 using aqueous tetramethylammonium hydroxide solutions. The relative density of the slip cast increased with longer ultrasonic time, increasing slurry pH up to 5, and consequent increase in solids loading. Smaller particles were separated from larger ones by ultrasonication, washing with water and centrifugation. At a 27.8 vol.% solids loading, the size-separated fine W slurry was slip cast into pellets with relative green densities up to 41.3 % and approximate particle sizes of 100 nm. W powders were also ultrasonicated in aqueous poly (ethyleneimine) (PEI) solutions with various concentrations. SEM examinations of particle sizes showed that 1 wt.% PEI led to the optimum dispersion and ultrasonication for longer time with a low power resulted in better dispersion. 0.5 g of W powders were ultrasonicated in 10 ml aqueous poly (allylamine hydrochloride) (PAH) solutions with molar concentrations ranging from 0.01 to 0.05 M. W suspensions with 0.03 M and 0.04 M PAH after two washing cycles showed improved dispersion. Cold isostatic pressing can further increase the green density following slip casting. Sintered slip casts made from de-agglomerated nanoparticle W showed a lower density, more uniform microstructure, smaller grains and smaller pores than the sintered dry pressed pellets.
M.S.
Department of Mechanical, Materials and Aerospace Engineering
Engineering and Computer Science
Materials Science & Engr MSMSE
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Stocky, Robin. "Etude du traitement de poudres et influence des caractéristiques obtenues sur la transparence de céramiques du type spinelle." Electronic Thesis or Diss., Valenciennes, Université Polytechnique Hauts-de-France, 2020. http://www.theses.fr/2020UPHF0015.

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Ce travail d’élaboration de céramique transparente pour la protection balistique s’inscrit dansun contexte d’allégement de structure et d’amélioration des propriétés optiques et mécaniques.Le remplacement de la face avant en verre par une céramique polycristalline, telle que lespinelle MgAl2O4 permet d’optimiser considérablement les performances balistiques, touten diminuant la masse et le volume de la protection. Le principal objectif de ce travail a étél’obtention d’une céramique transparente type spinelle avec une microstructure à grains finspermettant d’obtenir de bonnes propriétés mécaniques et balistiques. Afin de contrôler lamicrostructure de la céramique, il est nécessaire d’adopter des conditions de frittage douces,c’est pourquoi l’utilisation d’une poudre très fine et réactive a été envisagée. Mais l’utilisationd’une telle poudre soulève souvent des problèmes de mise en forme et de frittage homogène,qui sont un frein à la transparence de la céramique. Cette étude s’est tout d’abord focaliséesur la poudre de spinelle en comparant quatre poudres de spinelle commerciales. Cette partiea permis de mettre en avant les particularités rhéologiques ou morphologiques nécessaires àla mise en forme des céramiques, influençant ainsi le frittage et donc la transparence finale,comme par exemple le réarrangement granulaire, la surface spécifique ou la perméabilité. Unefois la poudre de spinelle choisie, une étude de traitement a été menée sur cette dernièreen exploitant son agglomération afin d’obtenir une céramique transparente dans le visibleavec une microstructure fine. Le challenge a été d’optimiser sa mise en forme par différentstraitements et son frittage. Cette étude s’est soldée par l’obtention de céramique transparenteà fine microstructure (taille de grain de 4-5_m) et avec une transmission en ligne de 71%à 650nm, grâce à l’utilisation d’un spray dryer et d’un additif PEG. Une autre étude s’estconcentrée sur la possibilité de renforcer ce spinelle transparent par l’ajout de matériau dedifférentes natures (nanodiamant, alumine, zircone). L’objectif a été d’améliorer les propriétésmécaniques du spinelle, tout en gardant intactes ses propriétés optiques. L’ajout de phasesecondaire en tant que renfort soulève de nombreuses difficultés de par leurs tailles, l’indicede réfraction différent du spinelle et les éventuelles réactions qui peuvent se produire lors dufrittage. Une dernière étude a été menée sur la mise en forme de forme complexe, permettantainsi d’autres applications du spinelle en tant que protection. La voie classique par pressageuniaxial s’étant avéré peu concluante, une mise en forme par voie liquide s’est montrée êtreune solution envisageable. Elle a nécessité une étude complète de la mise en suspension duspinelle et son comportement lors de sa mise en forme. Chacune des études s’est appuyée surla morphologie de la poudre et son évolution lors de la mise en forme et le frittage, par lebiais d’études microstructurales et rhéologiques ainsi que l’évaluation des propriétés optiqueset mécaniques
This work aims to elaborate the benefits of transparent ceramics in ballistic protection systemswhich are employed by the military in their vehicles. The main focus lies on improving bothoptical and mechanical properties as well as reducing the weight of the system as a whole.Substituting the standard multilayered front glass panel with a polycrystalline ceramic, suchas the spinel MgAl2O4 used in this work, considerably improves its ballistic performance, whilesimultaneously reducing its mass and volume. In order to achieve these improved properties,which most commonly result from a fine-grained microstructure, a very fine grained andreactive powder is used. However, the use of such powders raises additional difficulties inshaping and homogeneous sintering, all of which have a negative effect on the transparency ofthe ceramic. The first focus of this study is the selection of an appropriate powder, carried outby comparison of multiple commercially available powders. This following step highlightedthe rheological and morphological particularities of the examined powders, necessary for theshaping of ceramics, and influencing the sintering and thus the final transparency, such asgranular rearrangement, specific surface area or permeability. Once the spinel powder hadbeen chosen, a processing study was carried out on it, exploiting its agglomeration to obtain avisibility transparent ceramic with a fine microstructure. Since some nanopowders presentedwith difficulties in shaping, further optimization of different treatment methods (use of afreeze dryer, an oven or a spray dryer) in combination with appropriate sintering approacheswere explored. Ultimately, by combining a spray dryer and a PEG additive, the study resultedin the production of a transparent spinel ceramic with a fine microstructure (grain size of4-5 µm) and an in-line transmission of 71% at 650 nm. A parallel study on strengtheningthe transparent spinel by introducing various additives, such as nanodiamond, alumina, andzirconia was also carried out. The primary objective was to improve the mechanical propertiesof the spinel, while keeping its optical properties untouched. The addition of a secondaryphase as reinforcement raised many difficulties, mainly due to the size disparity, differentrefractive index of the spinel and potential unwanted reactions that can occur during sintering.Lastly, the final study focused on complex shaping of spinel ceramics for ballistic protection.As a prerequisite, a complete examination of the spinel’s suspension and its behaviour duringshaping had to be performed. The new findings validated liquid shaping as a viable solutionto achieve transparent 3D profiles, while the classic uniaxial pressing route did not yield anyconclusive results. Each of the studies was based on the morphology of the powder and itsevolution during shaping and sintering. The results were obtained through microstructuraland rheological studies as well as the evaluation of optical and mechanical properties
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Ferguson, Lucian Garret. "Spectrally selective, matched emitters for thermophotovoltaic energy conversion fabricated by tape casting process /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/10589.

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Books on the topic "Casting powder"

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Degenhardt, Rolf. Beitrag zur Klärung der Wirkmechanismen beim Einsatz von Stranggiesspulvern. Leipzig: VEB Deutscher Verlag für Grundstoffindustrie, 1985.

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Mills, Kenneth C., and Carl-Åke Däcker. The Casting Powders Book. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53616-3.

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F, Garfield Curtis, ed. Power surfcasting. New York, NY: Lyons & Burford, 1991.

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D'Haeyer, R. Development of new mould powders for continuous casting. Luxembourg: Commission of the European Communities, 1987.

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Jular Pérez-Alfaro, Cristina, and Carlos Estepa Díez, eds. Land, Power, and Society in Medieval Castile. Turnhout: Brepols Publishers, 2009. http://dx.doi.org/10.1484/m.tmc-eb.6.09070802050003050206020302.

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The limits of royal authority: Resistance and obedience in seventeenth-century Castile. Cambridge, United Kingdom: Cambridge University Press, 1999.

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The Queen's hand: Power and authority in the reign of Berenguela of Castile. Philadelphia: University of Pennsylvania Press, 2012.

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Bianchini, Janna. The Queen's hand: Power and authority in the reign of Berenguela of Castile. Philadelphia: University of Pennsylvania Press, 2012.

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Berenguela of Castile (1180-1246) and political women in the High Middle Ages. New York: Palgrave Macmillan, 2009.

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Walsh, Ronald A. McGraw-Hill machining and metalworking handbook. 3rd ed. New York: McGraw-Hill, 2006.

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Book chapters on the topic "Casting powder"

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Stobierski, Ludosław, Jerzy Lis, and Agnieszka Gubernat. "SiC Powder for Casting from Aqueous Suspension." In Advances in Science and Technology, 297–302. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908158-01-x.297.

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Haferkamp, H. D., M. Niemeyer, J. Weber, and R. Wertheim. "Sensors for Process Monitoring: Casting and Powder Metallurgy." In Sensors in Manufacturing, 143–71. Weinheim, FRG: Wiley-VCH Verlag GmbH, 2002. http://dx.doi.org/10.1002/3527600027.ch4a.

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Mesquita, Rafael Agnelli, and Celso Antonio Barbosa. "High-Speed Steels Produced by Conventional Casting, Spray Forming and Powder Metallurgy." In Advanced Powder Technology IV, 244–50. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-984-9.244.

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Lim, Jun Hyung, Kyu Tae Kim, Eui Cheol Park, Jin Ho Joo, Hyoung Sub Kim, Hoo Jeong Lee, Seung Boo Jung, and Wan Soo Nah. "Texture Evolution in Ni Substrate Prepared by Powder Metallurgy and Casting Methods." In Progress in Powder Metallurgy, 1605–8. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.1605.

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Kim, Sang Youl, N. Babcsan, Duck Kyu Ahn, Yeong Hwan Song, and Bo Young Hur. "Corelationship Between Powder Metallurgy and Casting Method Using SiC Powder for Metal Foam." In Progress in Powder Metallurgy, 945–48. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.945.

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Zhu, Xin Wen, Tetsuo Uchikoshi, and Yoshio Sakka. "Aqueous Processing of Textured Silicon Nitride Ceramics by Slip Casting in a Strong Magnetic Field." In Progress in Powder Metallurgy, 1009–12. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.1009.

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Geffroy, Pierre Marie, Jean François Silvain, and Thierry Chartier. "Elaboration by Tape Casting and Hot Rolling of Copper/Silicon Carbide Composite Thin Films for Microelectronic Applications." In Progress in Powder Metallurgy, 881–84. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.881.

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Mizushima, Takao, Kazuaki Ikarashi, Shoji Yoshida, Akihiro Makino, and Akihisa Inoue. "Bulk Fe-Based Glassy Alloys Prepared by Casting and Powder Metallurgy." In Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, 46–52. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607277.ch8.

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Ardelean, Erika, T. Hepuţ, and Marius Ardelean. "Research Concerning the Obtaining From Industrial Wastes of a Cover Powder Used in Steel Continuous Casting." In Materials and Technologies, 329–32. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-460-x.329.

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Dević, Snezana, and R. Carli. "Effect of Wolastonite Mineral (CaO SiO2) Content in Continuous Casting Powder to SEN Erosion." In Innovation in Ceramic Science and Engineering, 107–10. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-454-5.107.

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Conference papers on the topic "Casting powder"

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Mun, Jiwon, Jaehyung Ju, and James Thurman. "Indirect Additive Manufacturing Based Casting (I AM Casting) of a Lattice Structure." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38055.

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Direct-metal additive manufacturing (AM) processes such as Selective Laser Melting (SLM) and Electron Beam Melting (EBM) methods are being used to fabricate complex metallic cellular structures with a laser or electron beam over a metal powder bed. Even though these processes have excellent capabilities to fabricate parts with cellular mesostructures, there exist several constraints in the processes and applications: limited selection of materials, high thermal stress by the high local energy source, poor surface finish, and anisotropic properties of parts caused by combined effects of one-dimensional (1D) energy based patterning mechanism, the deposition layer thickness, powder size, power and travel speed of laser or electron beam. In addition, manufacturing cost is still high with the Direct-metal AM processes. As an alternative for manufacturing metallic 3D cellular structures, which can overcome the disadvantages of direct-metal AM techniques, polymer AM methods may be combined with metal casting. We may call this “Indirect AM based Casting (I AM casting)”. The objective of this study is to explore the potential of I AM Casting associated with development of a novel manufacturing process — Indirect 3D Printing based centrifugal casting which is capable of producing multifunctional metallic cellular structures with internal cooling channels having a 2mm inner diameter and 0.5mm wall thickness. We characterize polymers by making expendable patterns with a polyjet type 3D printer; e.g., modulus, strength, melting and glass transition temperatures and thermal expansion coefficients. A transient flow and heat-transfer analysis of molten metal through 3D cellular network mold will be conducted. Solidification of molten metal through cellular mold during casting will be simulated with temperature dependent properties of molten metal and mold over a range of running temperatures. The volume of fluid (VOF) method will be implemented to simulate the solidification of molten metal together with a user defined function (UDF) of ANSYS/FLUENT. Finally, experimental validation will be conducted.
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Kaineder, Alexander, Oliver Lang, Reinhard Feger, Paul Dollhaubl, Andreas Stelzer, and Stefan Leitner. "Casting Powder Thickness Field-Measurement with Ultra Wideband Radar System." In 2019 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility (ICMIM). IEEE, 2019. http://dx.doi.org/10.1109/icmim.2019.8726661.

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Hayes, Austin C., and Gregory L. Whiting. "Powder-Binder Jetting Large-Scale, Metal Direct-Drive Generators: Selecting the Powder, Binder, and Process Parameters." In ASME 2019 Power Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/power2019-1853.

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Abstract Additive manufacturing enables the production of complex geometries extremely difficult to create with conventional subtractive methods. While good at producing complex parts, its limitations can be seen through its penetration into everyday manufacturing markets. Throughput limitations, poor surface roughness, limited material selection, and repeatability concerns hinder additive manufacturing from revolutionizing all but the low-volume, high-value markets. This work characterizes combining powder-binder jetting with traditional casting techniques to create large, complex metal parts. Specifically, we extend this technology to wind turbine generators and provide initial feasibility of producing complex direct-drive generator rotor and stator designs. In this process, thermal inkjet printer heads selectively deposit binder on hydroperm casting powder. This powder is selectively solidified and baked to remove moisture before being cast through traditional methods. This work identifies a scalable manufacturing process to print large-scale wind turbine direct drive generators. As direct-drive generators are substantially larger than their synchronous counterparts, a printing process must be able to be scaled for a 2–5 MW 2–6m machine. For this study, research on the powder, binder, and printing parameters is conducted and evaluated for scalability.
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Leylavergne, M., A. Grimaud, P. Fauchais, T. Chartier, and J. F. Baumard. "PTA Reclamation of Cast Iron and Aluminum Alloys Substrate with NiCu Film Deposited by Tape Casting." In ITSC 1998, edited by Christian Coddet. ASM International, 1998. http://dx.doi.org/10.31399/asm.cp.itsc1998p0373.

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Abstract Plasma transferred arc (PTA) is now currently used for reclamation of worn materials or to provide wear or corrosion resistant coatings welded to the base material. However, the powder injection in the molten pool created at the coated part surface is a critical parameter. In order to avoid coating reproducibility problems induced by the powder feed rate, the way to coat substrate surface with powder before the PTA treatment has been studied. As the powder cannot simply be deposited onto the substrate because of the plasma flow which would blow it off before melting it, tape casting process was used to obtain an adherent powder layer on the material surface. In this paper, tape casting of NiCu particles is described and the different organic additives used to obtain a homogeneous nickel copper film on cast iron and AG3 aluminum alloys are presented. The first results of the treatment of these films by PTA reclamation are then shown.
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Phatthanakun, R., P. Songsiriritthigul, P. Klysubun, and N. Chomnawang. "Multi-step powder casting and x-ray lithography of SU-8 resist for complicated 3D microstructures." In 2008 5th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON). IEEE, 2008. http://dx.doi.org/10.1109/ecticon.2008.4600553.

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Joel, J., and M. Anthony Xavior. "Enhancing the Frictional Behaviour of H-BN Reinforced Nanocomposites Through Laser Shock Peening." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10162.

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Abstract In this research work, LM6 Aluminum alloy based metal matrix composites reinforced with varying amounts (0.2, 0.4, 0.6 and 0.8 wt%) of boron nitride (BN) having 10 to 30 nanometers average size were developed by using powder metallurgy and squeeze casting routes. The mechanical and tribological properties are analyzed for the samples developed through the two different routes and the influence of the process on the properties is discussed. Thus developed nano composite is studied for the effect of weight percentage addition of nano H-BN particle on the bulk and surface properties. Mechanical testing and advanced characterization methods are used to study the effect of the nano H-BN addition to the matrix material and to evaluate the composite for its suitability as a potential friction material used in strategic sectors. It has been inferred that the presence of nano H-BN have improved the bulk and surface properties. Further, it has been established that the powder metallurgy route has some favorable results when compared to squeeze casting in terms of certain properties. Thus fabricated composites were subjected to laser shock peening process to study its impact on the surface and wear characteristics. The 0.6 wt% H-BN reinforced composites fabricated separately by Powder metallurgy and Squeeze casting method are exposed to laser shock peening process and it was inferred that there is a significant improvement on the surface and wear properties when compared to normal specimen.
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Iijima, K., A. Yoshinari, T. Ishida, T. Yasuda, H. Matsuzaki, and K. Shimomura. "Processing of a Single Crystal Casting for Heavy-Duty Gas Turbine Blades: Creep and Metal/Mould Reaction Behavior of Al2O3-SiO2 Shell Mould." In ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-272.

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Al2O3-SiO2 moulds have been adopted successfully as shell moulds for a single crystal casting for jet engine blades. Heavy-duty gas turbine blades also have large dimensions and complex features comparable to those of jet engines. Then shell moulds should be subjected to similar severe service conditions when casting heavy-duty gas turbine blades. Creep behavior of 90mol%Al2O3+10mol%SiO2, which was manufactured through the lost wax process by using fused Al2O3 powder (average particle size, 15 μ m), was studied at temperatures of 1450 to 1550 °C. in four-point bending creep tests. Creep deflection rates were linearly proportional to stresses. The proposed creep mechanism was Al grain boundary diffusion at the interfacial regions between Al2O3 stucco powder. No severe metal/mould reaction appeared for the region adjacent to the interface between moulds and Ni base superalloys.
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Babaghorbani, P., and M. Gupta. "Effect of Processing Methodology on Microstructure and Mechanical Properties of Sn-3.5Ag Solder." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66308.

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The manufacturing techniques of powder metallurgy and casting were used to synthesize a Sn-3.5Ag followed by hot extrusion. In the sintering step of powder metallurgy, two routes of conventional and microwave sintering were investigated. Physical, microstructural, thermomechanical and mechanical properties of the developed solders were examined. These studies revealed that the best combination of the properties is realized from the Sn-3.5Ag synthesized using powder metallurgy incorporating microwave sintering route. An attempt is made to correlate processing-microstructure-properties relationship for Sn-3.5Ag.
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Serra, Angela, Martina Malarco, Alessandro Musacchio, Giulio Buia, Pietro Bartocci, and Francesco Fantozzi. "Comparing Environmental Impacts of Additive Manufacturing vs. Investment Casting for the Production of a Shroud for Gas Turbine." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59640.

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Abstract Additive manufacturing (AM hereinafter) is revolutionizing prototyping production and even small-scale manufacturing. Usually it is assumed that AM has lower environmental impact, compared to traditional manufacturing processes, but there have been no comprehensive environmental life-cycle assessment studies confirming this, especially for the gas turbines (GT hereinafter) and turbomachinery sector. In this study the core processes performed at Baker Hughes site in Florence are considered, together with the powder production via atomization process to describe the overall environmental impact of a GT shroud produced through additive manufacturing and comparing it with traditional investment casting production process. Particular attention is given to materials production and logistics. The full component life cycle starts from the extraction of raw materials during mining, their fusion and, as said, the atomization process, the powders are transported to the gas turbines production site where they are used as base material in additive manufacturing, also machining and finishing processes are analyzed as they differ for a component produced by AM respect to one produced by traditional investment casting. From the analysis of the data obtained, it emerges that the AM process has better performances in terms of sustainability than the Investment casting (IC hereinafter), highlighted above all by a decrease in greenhouse gas emissions (GHG hereinafter) of over 40%.
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Leylavergne, M., T. Chartier, A. Grimaud, and P. Fauchais. "PTA Reclamation of Cast Iron Substrates Using Tape Casting Process—The Role of the Organic Binder Concentration." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p1169.

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Abstract Plasma transferred arc (PTA) is now currently used for reclamation of worn materials or to provide wear or corrosion resistant coatings welded to the base material. Instead of injecting the powder in the molten pool created at the coated surface, another way to coat substrate surface before the PTA treatment has been studied. As the powder can not be simply deposited on the substrate surface because of the plasma flow which would blow it off before melting it, a tape casting process was used to obtain an adherent powder layer on the material surface. Its cohesion and adhesion to the substrate are due to the organic binder contained in the tape to form organic bridges between particles. In this paper, the electrical properties of NiCu (70/30) tapes deposited on cast iron substrates were first studied. It has been shown that the binder led to a low electrical conductivity of the layer. PTA treatment of the casted tapes has been carried out by starting the electrical arc on the metallic cast iron substrates. The process control by CCD camera allowed to observe that the NiCu particles fell in the melting pool created at the substrate surface. The study of the obtained alloy compositions has shown the drastic influence of the initial binder concentration in the tape. Moreover, before being treated by PTA, some NiCu tapes were heated in a furnace at 1100°C for 4 hours to remove the organic binder and sinter the layer. The coatings thus produced, which were characterized by a low electrical resistivity and a good adhesion to the substrate, were then treated by PTA. The surfacing alloy properties were compared to those obtained without heat treatment.
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Reports on the topic "Casting powder"

1

In-depth survey report: evaluation of a ventilation control for casting cleaning in a foundry at General Castings -- Powers Street Facility, Cincinnati, Ohio. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, September 1993. http://dx.doi.org/10.26616/nioshectb17121a.

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Health hazard evaluation report: HETA-92-092-2333, General Castings - Power Street Facility, Cincinnati, Ohio. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, July 1993. http://dx.doi.org/10.26616/nioshheta920922333.

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