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rapid prototyping
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Published: 01 December 2018
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Published: 01 August 2012
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Published: 01 December 1995
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200133
EISBN: 978-1-62708-354-6
... Abstract This chapter gives an overview of how steel castings may be effectively adapted to modern concurrent engineering processes. The chapter discusses computer aided design programs, solid modeling, solidification simulation programs, and rapid prototyping. computer-aided design...
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410029
EISBN: 978-1-62708-280-8
... also include gravity permanent molding, low-pressure permanent molding, counter pressure, squeeze casting, investment casting, rapid prototype casting, cast forge hybrid, and semisolid metal processes. green sand casting no-bake molding vacuum molding evaporative foam casting gravity...
Abstract
This chapter discusses the advantages, limitations, and applications of various aluminum casting processes, namely green sand casting process, air set or no-bake molding process, vacuum molding process, evaporative foam casting process, and die casting process. The processes covered also include gravity permanent molding, low-pressure permanent molding, counter pressure, squeeze casting, investment casting, rapid prototype casting, cast forge hybrid, and semisolid metal processes.
Image
Published: 01 December 2018
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410021
EISBN: 978-1-62708-280-8
... of the bridge section. The maximum pore size was 800 μm on the surface and 500 μm in the center. The typical pore fraction was 3 to 4%. In this case, the sand casting process may not be most ideal process because of the potential for rapid crack propagation across the coarse structure, compounded by the large...
Abstract
This chapter provides information on comparative attributes of sand molds and metal molds for aluminum casting. The cooling rates and microstructures obtained with each mold type are discussed. In addition, the chapter explains why sand castings work successfully in certain applications.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.9781627082808
EISBN: 978-1-62708-280-8
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120039
EISBN: 978-1-62708-269-3
... of titanium castings over conventional wrought titanium are: Cost savings Reduced lead time to component delivery Ability to provide complex near-net shapes Ability to use rapid prototyping to produce evaluation components inexpensively (compared with the use of conventional die forging...
Abstract
Titanium castings are used in a wide range of aerospace, chemical process, marine, biomedical, and automotive applications. This chapter provides an overview of titanium casting and associated processes and how they compare with other manufacturing methods. It also discusses the role heat treating and its effect on the tensile properties of different titanium alloys.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120131
EISBN: 978-1-62708-269-3
... with advanced rapid prototyping methods to directly manufacture three-dimensional components. The approach is similar to rapid prototyping techniques, such as stereolithography and selective laser sintering. However, it is different in that a fully dense, high-integrity part is claimed to be made without...
Abstract
This chapter discusses some of the promising developments in the use of titanium, including titanium aluminides, titanium matrix composites, superplastic forming, spray forming, nanotechnology, and rapid solidification rate processing. It also reports on efforts to increase the operating temperature range of conventional titanium alloys and reduce costs.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460209
EISBN: 978-1-62708-285-3
... , Springer Science + Business Media, LLC , 2010 10.1007/978-1-4419-1120-9 8.14 Kruth J.-P. , Leu M.C. , and Nakagawa T. , Progress in Additive Manufacturing and Rapid Prototyping , Ann. CIRP , Vol 47 ( No. 2 ), 1998 , p 525 – 540 10.1016/S0007-8506(07)63240-5 8.15...
Abstract
This chapter discusses the application of high-pressure cold spray to the automotive industry field, with special attention to three applications: additive manufacturing, fabrication methods, and protective coatings. Various studies on the automotive application of cold spray are reviewed. The background and purpose of each application are presented and practical cases are discussed.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040010
EISBN: 978-1-62708-428-4
...), free-standing structures for rapid prototyping, multilayered sleeves (Zn-Cu-Al), and conductive polymers. Copper is perhaps the most studied feedstock material for the cold-spray process, as these coatings combine very low porosity and low oxygen content, which contribute to excellent electrical...
Abstract
This article provides a brief description of commercially important thermal spray processes and gives examples of applications and application requirements. The processes covered are flame, wire arc, plasma, high-velocity oxyfuel processes, detonation gun, and cold spray methods. Examples are provided of the applications in aerospace, automotive, and medical device industries as well as the use of thermal spray as an additive manufacturing technique.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280079
EISBN: 978-1-62708-267-9
... superalloys with which to “feed” the model. There is still much opportunity for advancement in this area. A new technology known as rapid prototyping has enabled significant changes in the casting industry by eliminating the need for many of the investment casting process steps. This elimination has led...
Abstract
This chapter discusses the application of investment casting to nickel- and cobalt-base superalloys. It describes the production of polycrystalline and single crystal castings, the materials normally used, and the part dimensions and tolerances typically achieved. It explains how patterns, molds, and shells are produced, discusses the practice of directional solidification, and examines an assortment of turbine components cast from nickel- and cobalt-base alloys. The chapter also addresses casting problems such as inclusions, porosity, distortion, core shift, and leaching and explains how to avoid them.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290261
EISBN: 978-1-62708-319-5
... on oxides of lead, zirconium, and titanium and used for ultrasonic transducers, sensors, sonar, and various signal propagation or collection applications, based on shapes fabricated by powder injection molding. R rapid prototype. Several emerging techniques that bypass a need for tooling by using computer...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.9781627083195
EISBN: 978-1-62708-319-5
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290001
EISBN: 978-1-62708-319-5
... or fused filament fabrication Complex shapes, closed-porosity structures, conformal cooling channel, infills Porous structures, freedom to make almost any shape, open and closed infills Rapid prototyping, mold inserts with conformal cooling, gears, artistic bodies Component production inherently...
Abstract
This chapter provides an introduction to powder processing of binders and polymers. It sets the context for the remainder of the book by providing an overview of the topics discussed in the subsequent chapters and by providing introduction to powder-binder fabrication and customization of feedstock and describing the challenges in component production. The chapter also summarizes alphabetically a few key concepts in powder-binder processing.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130395
EISBN: 978-1-62708-284-6
..., and the hardness traverse matched that obtained in the rapid prototype samples. Results Products with a lower combined carbon content did not crack when induction hardened. Case Study 9: Cracks after Quenching A flyweight for a governor assembly in a diesel engine was carbonitrided to meet...
Abstract
This chapter reviews failure aspects of structural ferrous powder metallurgy (PM) parts, which form the bulk of the PM industry. The focus is on conventional PM technology of parts in the density range of 6 to 7.2 g/cc. The chapter briefly introduces the processing steps that are essential to understanding failure analysis of PM parts. This is followed by a section on case hardening of PM parts. The methods used for analyzing the failures are then discussed. Some case studies are given that illustrate different failures and the methods of prevention of these failures.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700151
EISBN: 978-1-62708-279-2
... within the temperature range of 1000 to 1100 °C (1830 to 2010 °F). Annealing causes recrystallization to control grain size and to dissolve precipitated carbides. Cooling from annealing temperatures must be sufficiently rapid to avoid carbide precipitation. No martensite can form from quenching because...
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320011
EISBN: 978-1-62708-332-4
... in rapid sand casting. Cores and molds are created directly from the 3D component geometry, skipping the need to create tooling. This saves the time and cost of developing conventional tooling. This method is particularly attractive in rapid development of sand-cast prototypes for proof-of-design concept...
Abstract
Most iron and steel castings are produced by casting into sand molds. Sand cores are needed primarily to form hollow cavities in castings for collapsibility and ease of cleaning. This chapter begins with an overview of the classification of molding and core-making systems. This is followed by a section discussing the process involved in shell molding, along with its applications. A brief description of the special casting processes is then presented. Next, the chapter discusses the processes involved in core making. Further, it provides an overview of casting manufacturing. Finally, the chapter provides information on the factors that influence a casting facility layout.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500317
EISBN: 978-1-62708-317-1
...: Nonmetallic Materials: Two types of nonmetallic materials are used for sheet metal forming tools: polymeric materials and ceramic materials. Polymeric materials are used to manufacture tools by rapid prototyping ( Fig. 16.2 ) and are used for small series of metal stampings (on the order of 50 to 500 pieces...
Abstract
This chapter discusses the types of failures that can occur in sheet metal forming tools and explains how to mitigate their effects. It describes the factors that influence galling and wear and the benefits of special treatments and coatings. It provides information on through hardening, case (surface) hardening, and nitriding as well as hard chrome plating, vapor deposition, and thermal diffusion coating. It explains how to measure wear resistance using various tests and provides guidelines for selecting tool materials, treatments, and coatings.
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