Relevant bibliographies by topics / Sheet castings

Contents

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

Academic literature on the topic 'Sheet castings'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Sheet castings"

1

Anca, Denisa, Iuliana Stan, Mihai Chisamera, Iulian Riposan, and Stelian Stan. "Experimental Study Regarding the Possibility of Blocking the Diffusion of Sulfur at Casting-Mold Interface in Ductile Iron Castings." Coatings 11, no. 6 (2021): 673. http://dx.doi.org/10.3390/coatings11060673.

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The main objective of this work is to investigate the mechanism of sulfur diffusion from the mold (sand resin P-toluol sulfonic acid mold, sulfur-containing acid) in liquid cast iron in order to limit the graphite degeneration in the surface layer of iron castings. A pyramid trunk with square section samples was cast. On the opposite side of the feed canal of the samples, steel sheets with different thicknesses (0.5, 1, and 3 mm) were inserted with the intention of blocking the diffusion of sulfur from the mold into the cast sample during solidification. The structure evaluation (graphite and matrix) in the surface layer and the casting body was recorded. The experimental results revealed that by blocking the direct diffusion of sulfur at the mold-casting interface, a decrease of the demodified layer thickness (for 0.5 mm steel sheet thickness) is obtained until its disappearance (for steel sheet thicknesses of more than 1 mm). The paper contains data that may be useful in elucidating the mechanism of graphite degeneration in the superficial layer of ductile iron castings. Based on the obtained results, we recommend using such barriers on the metal-mold interface, which are able to limit sulfur diffusion from the mold/core materials into the iron castings, in order to limit or even cease graphite degeneration in the Mg-treated surface iron casting layer. The paper presents additional data related to the interaction of sulfur at the ductile iron casting-mold interface previously analyzed.
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Pa, Pai Shan. "Design of Forming Sheet Electrodes in Electrochemical Finishing of ZDC2 Castings Surface." Materials Science Forum 532-533 (December 2006): 965–68. http://dx.doi.org/10.4028/www.scientific.net/msf.532-533.965.

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This research presents a new modus of electrochemical finishing as a finish process using an effective design of forming sheet electrode on zinc alloys beyond traditional process of die casting on the surface of castings instead of the conventional hand or machines polishing. In the current experiment, the author takes an outer shell of toy vehicle for instance; five types of design electrode are used and supplied with continuous direct current in the experiment of electrochemical finishing. For the design electrodes, a thin plate with small end radius and small wedge angle are associated with higher current density and provides larger discharge space and better polishing effect. The electrode with spherical head performs the best. The electrochemical finishing after die casting saves the need of hand or machines polishing just needs quite short time to make the surface of castings smoothing and bright. An effective and low-cost polishing of the surface of castings is presented.
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Teng, Hai Tao, Bai Qing Xiong, Yon Gan Zhang, and Ting Ju Li. "Investigation on Sub-Rapid Solidification Behavior of Semi-Solid Magnesium Alloy Metal." Advanced Materials Research 320 (August 2011): 156–62. http://dx.doi.org/10.4028/www.scientific.net/amr.320.156.

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In order to investigate sub-rapid solidification behavior of semi-solid magnesium alloy metal, a novel semi-solid processing technique, called new vacuum suction casting (NVSC), is used to manufacture thin castings of AZ91D Mg-alloy directly from a liquid metal. The resulting microstructures of castings are characterized in detail and linked to the solidification behavior. In the microstructure of the sub-rapidly solidified SSM sheet, the “preexisting” primary solid particles, with the morphology of near-globules or rosettes, disperse in the homogeneous matrix consisting of fine near-equiaxed secondary α-Mg grains and fine precipitates of β-Mg17Al12 intermetallics. Owing to rapid solidification rate, the volume fraction of the β phase in the sub-rapidly solidified SSM sheets is much lower than that in the as-cast ingot. In addition, the content of alloying elements of Al and Zn was higher in the grain boundaries and the eutectic structure than that in the primary solid particles and in the second α-grains.
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Kim, Myoung Gyun, Gyu Chang Lee, and Joon Pyo Park. "Continuous Casting and Rolling for Aluminum Alloy Wire and Rod." Materials Science Forum 638-642 (January 2010): 255–60. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.255.

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Since the Continuous Casting & Rolling of the non-ferrous metal by Illario Properzi have invented in 1944, the various non-ferrous rod, wire and sheet are produced at present. Although there is long research and trials for producing the wire or rod of commercial the high-strength aluminum alloy, there are few companies with the success in producing commercial hard-aluminum alloys wire and rod by CC&R process. The application of the high-strength aluminum alloy rod or wire is various parts such as rivet, bolt, sports leisure supplies, high-tension power transmission wire, machinable and forgeable materials. However, it is very difficult to produce the high-strength aluminum alloy wire and rod by CC&R process because of the wide mushy zone and high strength compared with the pure or low strength aluminum alloy. Additionally, it is easy to crack and breakout in casting and rolling process due to tiny internal defects of the castings. The object of this project is to design the most suitable equipments for CC&R and optimize the experimental condition of continuous casting condition of the high-strength aluminum alloy. The facilities of CC&R process in RIST are composed of the melting furnace, the wheel casting machine, the automatic machine for moving of castings bar, the 15-step rolling machine with three rolls, the induction heater for reheating the castings bar and the coiling machine. In the present work, through the numerical computer simulation, in first, we have developed the thermal model of the solidification behavior of the casting bar. Finally, using finite element code, Marc, the temperature distribution of each rolled bar and effective strain are obtained during continuous rolling.
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Dashwood, Richard J., David Klaumunzer, Martin Jackson, Zhong Yun Fan, and Roger Grimes. "The Development of Superplastic Magnesium Alloy Sheet." Key Engineering Materials 433 (March 2010): 273–79. http://dx.doi.org/10.4028/www.scientific.net/kem.433.273.

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While magnesium alloys are routinely used in engineering applications in the form of net shape castings, applications for sheet product have been limited due to the poor cold formability of magnesium combined with the perceived expense of sheet. The issues associated with poor cold formability could largely be overcome if magnesium alloys were to be superplastically formed. Superplasticity in magnesium is well established with research papers on the subject dating back to the late 1960s. In recent years, interest in this area has grown to the point where a number of companies have successfully superplastically formed prototype automotive panels from magnesium alloy sheet. Concurrent to this the scientific community have demonstrated superplasticity in a wide range of magnesium alloys using processing techniques ranging from the exotic (severe plastic deformation) to the mundane (traditional warm rolling). Work by the current authors has shown, rather surprisingly, that superplasticity can be achieved in magnesium alloys in the as-cast condition. This has led to some initial exploratory work involving twin roll casting. The concept being that affordable superplastic magnesium sheet could be produced via twin roll casting with only limited rolling reduction to final gauge. This paper describes the superplastic behaviour (in uniaxial tension) and microstructure of sheet processed from strip cast AZ31 and AZ91. The experimental material has included strip cast AZ91 subjected to large shear strains immediately prior to casting. The material was tested in the as-cast condition and after warm rolling to a number of gauges. Industrially useful superplastic capability was demonstrated in the strip cast alloys. Furthermore, good superplastic capability was also demonstrated in sheet subsequently rolled from the cast metal and rolling strain did not significantly influence the ductilities obtained. The mechanism for achieving superplasticity in as-cast magnesium alloys will be considered and the contrasting deformation characteristics of AZ31 and AZ91 will be discussed in terms of m value analysis and microstructural characterisation.
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Pană, Gabriela Monica, and Laura Diana Grigorie. "The Issue of Car Body Manufacture in Unibody Aluminum Alloy Design." Applied Mechanics and Materials 880 (March 2018): 183–88. http://dx.doi.org/10.4028/www.scientific.net/amm.880.183.

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Weight reduction is the present and future issue in the automotive industry. The use of aluminum for bodywork is a growing solution due to the specific properties and the recyclability it offers. The unibody design concept with high productivity is developed for steel sheet metal car bodies. They can also be made with aluminum sheets with different product shapes (sheets, extrusions, castings etc.). The aluminum offers a wide variety of design options. The most important difference between aluminum and steel models is the predominant joining technique. In order to obtain optimal solutions from a technical and economical point of view, it is necessary to apply aluminum design concepts and correspondingly adapted manufacturing technologies.
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VOROZHTSOV, Aleksandr B., Vladimir V. PLATOV, Aleksandr A. KOZULIN, Anton P. KHRUSTALEV, Ivan P. MISHIN, and Il’ya A. ZHUKOV. "STUDY OF THE EFFECT OF TiB2 PARTICLES ON THE STRUCTURE, DEFORMATION BEHAVIOR, AND PROPERTIES OF THE ALUMINUM ALLOY 1550." Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika, no. 67 (2020): 102–16. http://dx.doi.org/10.17223/19988621/67/10.

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In this work, the special master alloys containing aluminum and TiB2 powder with bimodal particle size distribution in three mixture compositions are prepared. The master alloys are infused into the melts using an external ultrasound source. The castings with particles had smaller grain sizes than the initial castings without particles. It is found that the hardness, yield strength, and ultimate tensile strength reach higher values with an increase in the relative elongation of the cast alloys with added particles. A warm rolling mode is employed for the studied alloys to obtain sheet blanks. It is shown that the staged shrinkage of the billets up to deformation of 80 % with periodic heating up to 300 °C allows one to obtain defect-free sheet products. The structure of the rolled sheet-alloys is characterized by the plate-shaped grains elongated along the rolling direction with pockets of submicron-sized grains in between. The strength properties of the studied rolled alloys exceeded those of the cast alloys. In the case of the rolled alloys, an increase in the yield strength, ultimate tensile strength, and ductility is revealed for the alloys with particles as compared to the ones with no particles added.
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Tiedemann, Rico, Christoph Pille, Gerrit Dumstorff, and Walter Lang. "Sensor Integration in Castings Made of Aluminum - New Approaches for Direct Sensor Integration in Aluminum High Pressure Die Casting." Key Engineering Materials 742 (July 2017): 786–92. http://dx.doi.org/10.4028/www.scientific.net/kem.742.786.

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The use of sensors for detection, measurement and evaluation of mechanical and thermal loads is well known and essential for the implementation of »Structural Health Monitoring« (SHM). For this, sensors are mainly used for condition monitoring of mechanical loads and their impact to the castings state, which is a decisive advantage for safety-related components. The use of sensors on the surface of metallic components, in particular of cast metal components made of aluminum, is still limited to the use of strain gauges. They are usually applied on the surface of the cast metal components and get fixed by adhesives. The idea is, to integrate the sensors directly during the aluminum casting process. Since integrated sensors are naturally protected against chemical and mechanical influences, furthermore the load can be measured directly at the point of interest inside the component. Measurement data can be recorded and provide a good data basis for future calculations and dimensioning of components, which is known as »Data Mining« or »Industrial Data Space«. New technology and material combinations, which allow the fabrication of sensors capable of withstanding force and temperature during the integration process in aluminum casting, are investigated.In this paper, the design and fabrication of a strain gauge printed on an aluminum sheet is shown. These sensor sheets get integrated in aluminum during high pressure die casting (HPDC) in a way that a specimen is build up. The specimen is characterized in a fatigue bending test and the sensor data was read permanently during this test. It is shown that the new approach with printed thick film sensors on aluminum substrate sheets works properly to withstand the heavy thermal conditions during high pressure die casting. The fabricated sensor is able to sense the mechanical tiredness and detects the fatigue of the metal matrix. This a first step to use such material integrated sensors in structural health monitoring applications.
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Özgen, Ceyda. "The collection of a toy: Production history and collection value of the Matchbox regarding the consumer behaviours." Journal of European Popular Culture 12, no. 1 (2021): 45–63. http://dx.doi.org/10.1386/jepc_00027_1.

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Metal casting technology reached at a very advanced point after the Second World War. When the war was over, many companies producing metal castings suffered a huge market loss and tried to create new markets and develop new products. Some companies, inspired by the rapid development of automobile production, started to produce toy model cars with the casting technique, which were generally made with sheet metal bending until then, using the moulding techniques they had advanced. In this study, the history of Lesney company, established after the Second World War, and the development of Matchbox’s product range will be discussed in the context of collecting and a collection object. Matchbox collections are the most common model car collections in the world. The status of the designed objects as collectible objects was investigated together with the history and development process of Matchbox cars production and collecting behaviour of consumer.
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Anca, Denisa, Iuliana Stan, Mihai Chisamera, Iulian Riposan, and Stelian Stan. "Control of the Mg-Treated Iron Casting Skin Formation by S-Diffusion Blocking at the Metal–Mould Interface." Coatings 10, no. 7 (2020): 680. http://dx.doi.org/10.3390/coatings10070680.

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Having established that sulphur presence in the mould materials appears to have an important contribution in graphite degeneration at least in the casting surface layer, a research program is undertaken to explore the possible beneficial effect of sulphur diffusion blocking at the metal–mould interface. Test samples, with and without a thin steel sheet (up to 3 mm thickness) application on the inner surface of the mould cavity, before iron melt pouring, are considered for structure analysis. A higher nodulizing potential (0.048% Mgres, 0.015% Ceres, and 0.006% Lares) decreases the occurrence of surface graphite degeneration in castings obtained in rigid chemically bonded resin sand moulds, using P-toluol sulfonic acid (PTSA) hardener (S-including), but it is not enough to avoid this phenomenon (200–400 μm skin in present experimental conditions). The casting skin appears to have different values, depending on the evaluation technique (un- and Nital-etching direct measurement, or graphite parameters variation on the casting section). In the presence of a thin steel sheet at the metal–mould interface, the casting skin thickness decreases or is just excluded. It is supposed that it acts as a barrier, blocking S-diffusion from the mould media into the iron melt. Without this S-diffusion, the graphite degeneration in the casting surface layer could be avoided, or at least diminished. For industrial application, the increasing of residual content of nodulizing elements is a limited solution, and it is recommended to use barriers to block S transfer on the mould/metal surface, such as dense coatings or coatings with desulphurization capacity.
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Dissertations / Theses on the topic "Sheet castings"

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Cockfield, Tracey J. "Twin-roll casting of aluminium eutectic alloys." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270607.

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Kurilova, Jelena. "Developing Standardized Work in Casting Department : Case Study of Luvata Sweden AB Finspång." Thesis, Linköpings universitet, Kvalitetsteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-58517.

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This thesis is one part of a lean project initiated by Luvata Sweden AB in Finspang casting department. The primary goal of that project is to increase the production efficiency, reduce costs and improve the quality of the copper coil. The aim of this thesis is to develop standardized work in casting department at Luvata Sweden AB Finspang. The research is based on lean thinking and organized in three steps. FIRST STEP: This step implies value stream mapping (VSM) of the current manufacturing process. VSM technique is applied in order to create an overview of the entirety production flow in a casting department, to visualize non-value added activities and to identify process wastes. SECOND STEP: By using lean tools as: Waste Management, SMED and Visual Management, thesis work intends to clean the production process. 7 Wastes or seven forms of Muda were studied at Luvata Finspang. The source of 5 wastes were identified and reduced/eliminated. SMED (single minute exchange of dies) analysis was carried out for a changeover during a casting montage in order to reduce the changeover time and streamline the montage process. Spaghetti diagram was applied particularly to inspect the best location for all montage materials, equipments and tools in a casting floor. Ensuring the efficient implementation of Waste Management and SMED practices Visual Management technique was used. This mean expresses the information about production process, its real-time status and results in a way that could be understood by operators in a shop floor. It is important to clean a production process before the standardized work can be developed, since the purpose of standardized work is to represent the best practice: method and sequence for each process. THIRD STEP: The last thesis step focuses on developing standardized work sheets as a steering tool for operators to follow the best practice while executing their tasks in each work center (melting, casting, rolling) and during the casting montage. The standardized work sheets are designed to show the approved way to perform the specific procedures and are expected to motivate operators to perform theirs job in the common way. That would consequently reduce high variation in operators performance. It would probably take several years before any reasonable improvements could be observed. However the developed standardized work sheets are already placed in the shop floor and successfully used by operators this is my small contribution to a big improvement project!
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Richetti, Andresa. "Design e tecnologia : diretrizes para a estruturação de sistema informacional sobre ferros fundidos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/114451.

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Esta pesquisa tem por objetivo apresentar uma proposta de um sistema informacional constituído por ficha técnica sobre materiais, como estudo de caso os ferros fundidos (FoFos). Para auxiliar na formulação dessa proposta, foi desenvolvido um glossário através do embasamento nos pressupostos da Teoria Comunicativa da Terminologia (TCT). As etapas que delinearam o estudo terminográfico iniciaram na definição do corpus para a coleta de termos específicos sobre a área, para isso, realizou-se uma análise de plataformas informacionais sobre materiais similares, e as demais informações relevantes foram elencadas em material bibliográfico, seguido da coleta e distribuição (mapas conceituais) dos dados para a elaboração da ficha síntese, concluindo com a definição dos termos selecionados. Para compor o banco de dados, foram realizados procedimentos experimentais de metalografia com o viés de obter micrografias dos diferentes tipos de ferros fundidos além da obtenção de imagens de produtos acabados e o desenvolvimento de pictogramas para o design da informação. Com uma linguagem adaptada para atender o binômio Design e Engenharia, o sistema informacional apresenta informações técnicas relevantes para o desenvolvimento de um projeto, conteúdo de fácil acesso para ser utilizado em ambientes distintos, como salas de aula, escritórios, indústrias e outros.
This research aims to present a formal proposal of a informational system consisting of technical sheet and glossary, being Casting Iron (FoFos) the case study. For the formulation of this proposal, it was developed a glossary through the basement on the presuppositions of the Communicative Theory of Terminology (CTT). The steps that outlined the terminographic study began on the corpus definition for the collection of specific terms about the field, therefore, it was accomplished an informational standards analysis on similar materials, and further relevant information were listed as bibliographic material, followed by gathering and distribution (conceptual maps) of the data for the elaboration of the synthesis record, concluding with the definition of the selected terms. In order to compose the database, metallographic experimental procedures were made, keeping in mind the bias of obtaining micrographies from the different types of casting iron, plus the attainment of finished products images, and the pictograms process to design of the information. Along an adapted language for the binomial Design and Engineering support, the informational system presents relevant technical information for the upgrowth of a project, easy access content to be used over distinguished environments, such as classrooms, offices, factories and others.
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Holliday, Nathan. "Processing and Properties of SBR-PU Bilayer and Blend Composite Films Reinforced with Multilayered Nano-Graphene Sheets." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1458300045.

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Neubauer, Ondřej. "Kalkulace výrobních nákladů ve firmě Tomášek Milan - TOMEX." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2014. http://www.nusl.cz/ntk/nusl-224527.

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This thesis is focused on the calculation of production costs with the introduction of licensed production of submersible sludge pumps in company Tomasek Milan - TOMEX. The aim of this work is the introduction of licensed production and determine the manufacturing cost. In the theoretical section describes the methods for determining a production layout, calculation methods and methods of return on investment. The practical part deals with the determination of a suitable arrangement of production, production calculations and evaluation of overall investment.
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Huang, Chen-Jou, and 黃晨洲. "The toughness of casting PMMA sheet." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/91262440520493173614.

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碩士
國立成功大學
化學工程研究所
82
In the present work, The toughened, transparent poly(methyl methacrylate) has been studied by adding impact modifier EVA. In order to increase the interaction between the two phase of PMMA and EVA rubber, we have prepared some EVA-g-MMA first. Then,the blend between poly(methyl methacrylate ) and poly( ethylene-co-vinyl acetate ) rubbers obtained by in situ polymerization of the acrylic monomer in the presence of the rubber have been investigated by Izod test, by Falling weight test, by DSC,by Hazer, by Optical microscope, and by SEM. And then the phase structure development, mechanical impact properties, and transmitance of the resulting blend has been drawn in our results and discussion.
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Meng, Chieh, and 蒙捷. "The Study on Amorphization of Zr55Al10Ni5Cu30 Alloy Sheet by Centrifugal Casting Method." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/t5w8zs.

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碩士
國立臺北科技大學
材料科學與工程研究所
99
In the modern casting methods, centrifugal casting because of it''s larger centrifugal force could obtain closer finer structure, and be made wider and thinner cross-section than other casting methods. Zr55Al10Ni5Cu30 metallic glasses have good glass forming ability, high thermal stability of the supercooled liquid region and other characteristics. Therefore, we hope to combine these advantages and characteristics, make a larger volume of metallic glass. This study is prepared the sheet of Zr55Al10Ni5Cu30 alloy by centrifugal casting, discussion this casting method to make larger amorphous materials or not, and research its micro-structure, glass-forming ability, thermal properties and mechanical properties. The sheet of Zr55Al10Ni5Cu30 alloy by X-ray diffraction analysis shows that broad diffraction peaks with a few characteristic Bragg peaks, indicating the structure of specimen are amorphous base with a few precipitation of crystal phase. The result of XRD shows that crystallization in Zr55Al10Ni5Cu30 alloy include Ni7Zr2, Cu10Zr7 and ZrAl. By DSC measurements that first crystallization temperature (Tx) is 482 ℃, supercooled liquid region (ΔTx) is 85.4℃,the most far away from the riser and the thinnest specimen has the best glass forming ability with glass transition temperature (Tg) is 401.4℃, ΔTx is 85.4℃. In the test of mechanical properties, located in the central region of the specimen has the best Vickers hardness value, about 520.8 Hv, because of the precipitation of crystallization is good at enhance the hardness, but after the net-structure appeared, hardness begin to decrease, about 491.5Hv.
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黃振東. "A study of twin roll strip casting process and the continuous metal sheet." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/81801499018010318745.

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Wu, Sheng Jang, and 吳聲讓. "The Study on the Parameter Optimization of the Precision Ornament Gravity Casting of Tin-Alloyed Sheet Metal." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/58719677240600382041.

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碩士
華梵大學
工業管理學系碩士班
92
Jewelry makers always adopt the metallic mold investment casting or hand making method to produce adornments. The former method is used to mass production, while the latter is used to make by orders. The silver, tin, copper alloys and even stainless steels are usually used by the metallic mold investment casting method, whereas the gold, silver and copper alloys are frequently used by the handcraft method. The process including designing, drawing and prototype making is always a routine work for a jewelry designer. If the prototype making process can be simplified, the cost can be lower down and the material is also accessible, then it will be a great beneficial to the creative jewelry designer. Based on the cost and working conditions, the Taguchi method is adopted to achieve optimal manufacturing parameters for related makers in this study. Since the traditional Taguchi method can not successfully integrate multiple quality characteristics and provides poor quantitative analysis ability, the Fuzzy theory is thus combined with Taguchi method to quantify the semantic quality characteristics in this study. Compared with the difference between the optimal working parameter combinations obtained by fuzzy semantic quality characteristics and the actual measurements, the gray relationship analysis and TOPSIS method are employed to integrate and compare multiple quality characteristics including fuzzy and quantitative data. The similarity of working parameter combinations obtained by the simple semantic judgment and by time consuming measurements is also examined. Based on the two integrated methods, it is observed that the general fuzzy and quantified ranking results of the multiple quality characteristics are very similar. The most important three affecting factors are all the same.
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Sengupta, Joydeep. "Mathematical modeling of the evolution of thermal field during start-up phase of the direct chill casting process for AA5182 sheet ingots." Thesis, 2002. http://hdl.handle.net/2429/14896.

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The control of the thermal cooling conditions at the start-up phase of the Direct Chill (DC) casting process for aluminum sheet ingots is difficult, and is critical from the standpoint of defect formation. Firstly, boiling water heat transfer governs the secondary cooling experienced by the ingot surfaces as they emerge from the mould. This results in varying rates of heat transfer from the ingot faces as the surface temperature of the ingot changes with time during the start-up phase. Moreover, if the ingot surface temperature at locations below the point of water impingement is high enough to promote film boiling, the water is ejected away from the surface. This can result in a sudden decrease in heat transfer and the formation of local hot spots. Also, the chill water may enter into the gap formed between the ingot base and the bottom block with the evolution of the butt curl. This process of water incursion alters the heat transfer from the base of the ingot, and in turn affects the surface temperature of the ingot faces. A comprehensive mathematical model has been developed to describe heat transfer during the start-up phase of the D.C. casting process. The model, based on the commercial finite element package ABAQUS, includes primary cooling to the mould, secondary cooling to water, and ingot base cooling. The algorithm used to account for secondary cooling to the water includes boiling curves that are a function of surface temperature, water flow rate, impingement point temperature, and position relative to the point of water impingement. In addition, the secondary cooling algorithm accounts for water ejection, which can occur at low water flow rates (low heat extraction rates). The algorithm used to describe ingot base cooling includes the drop in contact heat transfer due to base deformation (butt curl), and also the increase in heat transfer due to the process of water incursion between the ingot base and bottom block. The model has been extensively validated against temperature measurements obtained from two 711 x 1680 mm AA5182 ingots, cast under different start-up conditions (non typical "cold" practice and non-typical "hot" practice). Temperature measurements were taken at various locations on the ingot rolling and narrow faces, ingot base, and top surface of the bottom block. Ingot base deflection data were also obtained for the two test conditions. Comparison of the model predictions with the data collected from the cast/embedded thermocouples indicates that the model that accounts for the processes of water ejection and water incursion, is capable of describing the flow of heat in the early stages of the casting process, satisfactorily. The research programme represents a significant improvement over existing thermal models that do not quantitatively describe the important phenomena related to the effects of water ejection and water incursion, which are specific to the transient start-up phase of the process. The thermal model, which has been extensively validated by the industrial data, not only provides an insight into the link between ingot base cooling and secondary water cooling heat transfer during the start-up phase, but also emerges as a basis for the development of thermomechanical models, based on fundamental principles, which can be used as a powerful tool for process optimization and quality control.
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Books on the topic "Sheet castings"

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

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

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Walsh, Ronald A. McGraw-Hill machining and metalworking handbook. McGraw-Hill, 1994.

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Marvin, Fleischman, and National Risk Management Research Laboratory (U.S.), eds. Waste minimization assessment for a manufacturer of iron castings and fabricated sheet metal parts. U.S. Environmental Protection Agency, National Risk Management Research Laboratory, 1995.

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Marvin, Fleischman, and National Risk Management Research Laboratory (U.S.), eds. Waste minimization assessment for a manufacturer of iron castings and fabricated sheet metal parts. U.S. Environmental Protection Agency, National Risk Management Research Laboratory, 1995.

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Pattar, H. S., D. T. Thornton, and R. S. Williams. Industry in Action: Problem Solving Assignments Resource Sheets: TWP Castings, a Medium Sized Manufacturing Company (Industry in Action). Hodder & Stoughton Educational Division, 1990.

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U, Dyllus F., and Deutsche Gesellschaft für Materialkunde, eds. A Technical and economical comparison of conventional and continuous casting and rolling methods for the production of cold-rolled aluminium strip: Information sheets. Deutsche Gesellschaft für Materialkunde e.V., 1992.

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Walsh, Ronald A. McGraw-Hill Machining and Metalworking Handbook. 2nd ed. McGraw-Hill Professional, 1998.

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Walsh, Ronald A. McGraw-Hill Machining and Metalworking Handbook. McGraw-Hill Professional, 1998.

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Book chapters on the topic "Sheet castings"

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Pa, Pai Shan. "Design of Forming Sheet Electrodes in Electrochemical Finishing of ZDC2 Castings Surface." In Materials Science Forum. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-421-9.965.

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Fjaer, Hallvard G., Andreas Buchholz, Benoît Commet, Jean-Marie Drezet, and Dag Mortensen. "Investigations of the Primary Cooling in Sheet Ingot Casting." In Continuous Casting. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607331.ch19.

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Prabhakar, Arun, Konstantinos Salonitis, and Mark Jolly. "Characterisation of Lead Sheet Manufactured Using Traditional Sand-Casting Technique." In Shape Casting. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-06034-3_27.

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Tøndel, Per Arne, Gary Grealy, John Henry Hayes, et al. "Improved Metal Distribution during DC-casting of Aluminum Alloy Sheet Ingots." In Continuous Casting. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607331.ch9.

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Tremblay, S. P., and R. Green. "The Manufacturing, Design and Use of Combo Bag Distributors in Sheet Ingot Casting." In Continuous Casting. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607331.ch46.

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Storck, Joakim, and Bengt Lindberg. "Assessment of Best Scheduling Practice in Continuous Casting and Hot Rolling of Stainless Steel Strip by System Dynamics Simulation." In Sheet Metal 2007. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-437-5.897.

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Towsey, N., G. Scheele, A. Luetzerath, and E. Schoell. "Sheet Ingot Casting Improvements at TRIMET Essen." In Light Metals 2019. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05864-7_116.

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Guthrie, Roderick, and Mihaiela Isac. "Horizontal Single Belt Casting of Aluminum Sheet Alloys." In Light Metals 2019. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05864-7_137.

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Allen, R. V., D. R. East, T. J. Johnson, W. E. Borbidge, and D. Liang. "Magnesium Alloy Sheet Produced by Twin Roll Casting." In Magnesium Technology 2001. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118805497.ch15.

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Kano, Tatsuhiro, Hideto Harada, Shinichi Nishida, and Hisaki Watari. "Production of Copper alloy sheet by twin-roll casting." In Proceedings of the 8th Pacific Rim International Congress on Advanced Materials and Processing. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-48764-9_320.

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Conference papers on the topic "Sheet castings"

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Karthik, S., C. W. Chung, and K. Ramani. "Rapid Application Development of Process Capability: Supplier Models." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/cie-48269.

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Rapid changes and specialization in technology make it increasingly difficult for designers to keep track of the current capabilities of manufacturing processes and choose the appropriate one. Improper process selection leads to higher costs, lower quality and wrong choice of the supplier. Currently, there is no software advisory system to help the design/procurement personnel in process and supplier selection. The complexity involved in building an application encompassing the capabilities of dozens of processes and its associated suppliers acts as a deterrent for application service providers. This paper discusses a technique to rapidly develop web applications to identify a suitable manufacturing process and supplier/s using Rapid Application Development (RAD). RAD refers to a new computing paradigm to develop software applications within a short time frame. The technique has been verified by developing an advisory system to identify a suitable plastic process and supplier/s. The methodology is currently limited to common manufacturing methods such as castings, forgings, sheet metal and plastic/composite manufacturing. Benefits realized using RAD include shorter design and development times, code reusability and standardization.
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Bjurstro¨m, Martin, and Carl-Gustaf Hjorth. "Producing HP Pump Barrels Utilizing Powder Metallurgy and Hot Isostatic Pressing." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77787.

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The fabrication of near net shape powder metal (PM) components by hot isostatic pressing (HIP) has been an important manufacturing technology for steel and stainless steel alloys since about 1985. The manufacturing process involves inert gas atomization of powder, 3D CAD capsule design, sheet metal capsule fabrication and densification by HIP in very large pressure vessels. Since 1985, several thousand tonnes of parts have been produced. The major applications are found in the oil and gas industry especially in offshore applications, the industrial power generation industry, and traditional engineering industries. Typically, the components replace castings, forgings and fabricated parts and are produced in high alloy grades such as martensitic steels, austenitic stainless steels, duplex (ferritic/austenitic) stainless steels and nickel based superalloys. The application of PM/HIP near net shapes to pump barrels for medium to high pressure use has a number of advantages compared to the traditional forging and welding approach. First, the need for machining of the components is reduced to a minimum and welding during final assembly is reduced substantially. Mechanical properties of the PM/HIP parts are isotropic and equal to the best forged properties in the flow direction. This derives from the fine microstructure using powder powder and the uniform structure from the HIP process. Furthermore, when using the PM HIP process the parts are produced near net shape with supports, nozzles and flanges integrated. This significantly reduces manufacturing lead-time and gives greater design flexibility which improves cost for the final component. The PM HIP near net shape route has received approval from ASTM, NACE and API for specific steel, stainless steel and nickel base alloys. This paper reviews the manufacturing sequence for PM near net shapes and discusses the details of several successful applications. The application of the PM/HIP process to high pressure pump barrels is highlighted.
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Bjurstro¨m, Martin, and Carl-Gustaf Hjorth. "Producing HP Pump Barrels Utilizing Powder Metallurgy and Hot Isostatic Pressing." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11209.

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The fabrication of near net shape powder metal (PM) components by hot isostatic pressing (HIP) has been an important manufacturing technology for steel and stainless steel alloys since about 1985. The manufacturing process involves inert gas atomization of powder, 3D CAD capsule design, sheet metal capsule fabrication and densification by HIP in very large pressure vessels. Since 1985, several thousand tonnes of parts have been produced. The major applications are found in the oil and gas industry especially in offshore applications, the industrial power generation industry, and traditional engineering industries. Typically, the components replace castings, forgings and fabricated parts and are produced in high alloy grades such as martensitic steels, austenitic stainless steels, duplex (ferritic/austenitic) stainless steels and nickel based superalloys. The application of PM/HIP near net shapes to pump barrels for medium to high pressure use has a number of advantages compared to the traditional forging and welding approach. First, the need for machining of the components is reduced to a minimum and welding during final assembly is reduced substantially. Mechanical properties of the PM/HIP parts are isotropic and equal to the best forged properties in the flow direction. This derives from the fine microstructure using powder powder and the uniform structure from the HIP process. Furthermore, when using the PM HIP process the parts are produced near net shape with supports, nozzles and flanges integrated. This significantly reduces manufacturing lead-time and gives greater design flexibility which improves cost for the final component. The PM HIP near net shape route has received approval from ASTM, NACE and API for specific steel, stainless steel and nickel base alloys. This paper reviews the manufacturing sequence for PM near net shapes and discusses the details of several successful applications. The application of the PM/HIP process to high pressure pump barrels is highlighted.
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Hjorth, Carl-Gustaf, and John C. Hebeisen. "Subsea Manifolds: An Alternate Fabrication Strategy Using HIP PM Near Net Shapes." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71156.

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Abstract:
The fabrication of near net shape powder metal (PM) components by hot isostatic pressing (HIP) has been an important manufacturing technology for steel and stainless steel alloys since about 1985. The manufacturing process involves inert gas atomization of powder, 3D CAD capsule design, sheet metal capsule fabrication and densification by HIP in very large pressure vessels. Since 1985, several thousand tonnes of parts have been produced. The major applications are found in the oil and gas industry especially in offshore applications, the industrial power generation industry, the pulp and paper industry and in pharmaceuticals and traditional engineering industries. Typically, the components replace castings, forgings and fabricated parts and are produced in grades such as martensitic steels, austenitic and duplex (ferritic/austenitic) stainless steels and nickel- based superalloys. The application of HIP PM near net shapes to manifolds for medium to high pressure use has a number of advantages compared to the traditional forging and welding approach. First, the need for machining of the components is reduced to a minimum and welding during final assembly is reduced substantially. Manifolds by HIP design reduce the necessary welding by 70–90%. Mechanical properties of the HIP PM part are isotropic and equal to the best forged properties in the flow direction as is demonstrated below. This derives from the fine uniform microstructure of the PM parts. The PM parts are significantly lighter in weight because of the need to stiffen the forged component at the location of the weldment for the intersecting passageway — the PM parts can be smoothly blended into the intersection without need for welding. Furthermore, the PM HIP components can be made with significantly reduced manufacturing lead-time, greater design flexibility and improved cost for the final component. The PM HIP near net shape route has received approval from both ASTM [1,2,3] and NACE [4] for specific steel, stainless steel and nickel base alloys. This paper reviews the manufacturing sequence for PM near net shapes and discusses the details of several successful applications. The application of the HIP PM process to subsea manifolds is highlighted.
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Hsiang, Su-Hai, and Yi-Wei Lin. "Study on the Mechanical Properties of AZ31 Magnesium Alloy Products Under Hot Extrusion Process." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95241.

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Magnesium alloy parts have the merits of low specific gravity, high specific strength, electromagnetic wave-proof shelter, and recyclability; therefore, it has been extensively applied to 3C and car industries. However, the processing and forming of magnesium is quite difficult to control due to magnesium’s hexagonal close-packed (HCP) structure, making the slipping face of itself less than the FCC material. Currently, common processing methods of magnesium alloys are die casting, semi-solid forming, and plastic forming. In the employment of a fixed-speed method for extrusion, the extruded sheet had serious defects in the forms of cracks on the surface. Hence, in this research, AZ31 magnesium alloy sheet metals were processed by hot extrusion using a variable speed method. The formability of AZ31 sheets under converging dies was investigated. Three converging dies with semi die angle of 20°, 30°, and 40° were used. Experiments were conducted and analyzed utilizing the Taguchi method. L9 orthogonal array was used to design the experiments under extrusion ratio of 35.9. Four important process parameters considered in this research are the heating temperature of the billet (320°C, 340°C and 360°C), the temperature of the container (300°C, 350°C and 400°C), the initial speed of extrusion (2mm/sec, 3mm/sec and 4mm/sec), and the lubricants (boron nitride, molybdenum disulphide and graphite) applied in the extrusion. The influences of these parameters to the extrusion load and the resulting mechanical properties were investigated. Moreover, the microstructure of the extruded sheets was observed to provide better insight of the formability. As a result, the optimal combinations of the process parameters were determined for the maximum tensile strength.
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Hunko, Wesley S., and Lewis N. Payton. "Development of Wire 3D (Wir3D) Printing Parameters." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66186.

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Currently additive manufacturing techniques offer great detail in small, difficult to produce parts. They are also relatively slow, limited in scale and very expensive (especially so in the additive manufacturing of metals realm). Wire and arc additive manufacturing enables manufacturers to build parts by depositing metal in layers using welding techniques. The extremely inexpensive Wire 3D (Wir3D) printing process, in development by the authors, uses an electric arc to melt metals at higher deposition rates than other additive techniques in metals. Large parts can be created quicker with less material waste or total machining time than subtractive manufacturing. Unique metal alloys can also be quickly and economically produced without worry of tool wear and the other drawbacks that are related to super alloy manufacturing as with subtractive techniques. A Wir3D additive machine was designed, constructed and evaluated at Auburn University. The wire deposition machine features a modular, open frame design allowing for easy access and continuous upgrades. The machine, which is based upon gas metal arc welding (GMAW) technology, is extremely rapid compared to other additive processes currently available at producing metal objects. Although it cannot currently compete with laser or electron beam additive methods in terms of resolution, these methods will never be able to compete with Wir3D in terms of speed for bulky print jobs, or especially material costs. During the literature review of this emerging technology, it became apparent that a standard reporting format would greatly increase future developments in the field by all researchers. A standard parametric data sheet was developed to establish a common data set for future researchers (included at end) during the experiments’ execution incorporating all of the parameters reported variously in the scattered literature. The printer described in this paper constructed for very little money by students working together. In the development, voltage and current requirements for different wire diameters were analyzed along with resulting wall widths and heights. The tensile strengths of deposited steel structures were measured in multiple orientations achieving up to 90% of standard material values in one orientation. Deposited steel structures were found to be heat treatable. With improved controls and in-process feedback, one-off castings can be easily replaced using this process in a wide array of metals. The wire 3D printing process is a viable option for low cost and rapid manufacturing of metallic objects [1].
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Watari, H. "Semi-solid Twin-roll Casting Process of Magnesium Alloy Sheets." In MATERIALS PROCESSING AND DESIGN: Modeling, Simulation and Applications - NUMIFORM 2004 - Proceedings of the 8th International Conference on Numerical Methods in Industrial Forming Processes. AIP, 2004. http://dx.doi.org/10.1063/1.1766711.

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Aida, Taira, Hiroshi Horie, Toshinori Kowata, and Makoto Miyake. "An Advanced Casting Technology for the Recycling of High-Tensile Steel Sheet Press Edge." In SAE 2002 World Congress & Exhibition. SAE International, 2002. http://dx.doi.org/10.4271/2002-01-1260.

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Li, Q., S. Yan, X. Wang, Z. Feng, Y. Chen, and V. G. Harris. "Enhanced microwave absorption of flake-oriented Sendust sheets by tape-casting." In 2015 IEEE International Magnetics Conference (INTERMAG). IEEE, 2015. http://dx.doi.org/10.1109/intmag.2015.7157336.

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J, Stiernstedt, Rossiquet G, Cristea M, and Carlström E. "Environmentally Sound Production of Thin Alumina Sheets by Aqueous Tape Casting." In 7th International Conference on Multi-Material Micro Manufacture. Research Publishing Services, 2010. http://dx.doi.org/10.3850/978-981-08-6555-9_178.

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Reports on the topic "Sheet castings"

1

Fleischman, M., J. J. Harris, A. Handmaker, and G. P. Looby. Waste minimization assessment for a manufacturer of iron castings and fabricated sheet metal parts. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/111909.

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2

Camb, Alan W., and Anthony Rollett. AIS/DOE Technology Roadmap Program: Strip Casting: Anticipating New Routes To Steel Sheet. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/791070.

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3

Gaspar, T. Textured substrate method for the direct continuous casting of steel sheet: Technical progress report No. 4. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/5948351.

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