1-20 of 331 Search Results for

compaction dies

Sort by
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006106
EISBN: 978-1-62708-175-7
... properties of bronze and brass and the roles of lubricant and compaction dies in the pressing process. It discusses the structural defects that originate during the compaction process. The article also describes the major factors that influence the sintering response in bronze, prealloyed bronze, brass...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006105
EISBN: 978-1-62708-175-7
... the roles of lubricant and compaction dies in pressing of copper powders. It explains the structural defects that originate during the compaction process of PM parts. The article also provides information on sintering, re-pressing, and re-sintering of copper PM parts. carbon brushes compaction dies...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001104
EISBN: 978-1-62708-162-7
.... Almost 50% of the total production of cemented carbides is used for nonmetal cutting applications. Their properties also make them appropriate materials for structural components, including plungers, boring bars, powder compacting dies and punches, high-pressure dies and punches, and pulverizing hammers...
Image
Published: 01 January 2005
Fig. 3 Macroscopic appearance of P/M 2080/20 vol% SiC powder compacts forged at different strain-rate/strain combinations at 500 °C (930 °F). Source: Ref 5 More
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001044
EISBN: 978-1-62708-161-0
...; type of compacting press; design of compacting tools and dies; type of sintering furnace; composition of the sintering atmosphere; choice of production cycle, including sintering time and temperature; and secondary operations and heat treatment. When the application of a powder metallurgy part requires...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006083
EISBN: 978-1-62708-175-7
... Heating Compaction dies can be heated by electric cartridge heaters embedded in the stress ring of the die or by a hot fluid recirculation system (typically water/glycol-based). Figure 5 shows a setup for the cartridge system. The number and wattage of the heating elements depend on the die size...
Image
Published: 30 September 2015
Fig. 3 Modeling and mesh-generation example showing the simulation of compaction and sintering for an oxygen sensor housing. (a) Mesh generation for the compact. (b) Modeling of punches and dies during compaction for the press simulation. (c) Modeling of compact in contact with the substrate More
Image
Published: 01 November 2010
Fig. 3 Modeling and mesh-generation example showing the simulation of compaction and sintering for an oxygen sensor housing. (a) Mesh generation for the compact. (b) Modeling of punches and dies during compaction for the press simulation. (c) Modeling of compact in contact with the substrate More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006034
EISBN: 978-1-62708-175-7
...) usually require pits. Top-drive and bottom-drive presses are comparable in terms of partmaking capability, reliability, and equipment cost. Press Tonnage and Stroke Capacity Required press capacity to produce compacts in rigid dies at a given pressure depends on the size of the part to be pressed...
Image
Published: 31 August 2017
Fig. 11 Temporal evolution of the tensile strength of cast iron. ADI, austempered ductile iron; DI, ductile iron; CGI, compacted (vermicular) graphite iron; LG, lamellar graphite More
Image
Published: 31 August 2017
Fig. 22 Graph showing the effect of carbon equivalent and graphite shape on the duration of graphite expansion displacement. CGI, compacted graphite iron; GI, graphite iron; DI, ductile iron. Source: Ref 16 More
Image
Published: 31 August 2017
Fig. 20 Comparison between cast iron (AUS, austempered; DI, ductile iron; CG, compacted graphite iron) and aluminum alloys for multiobjective optimization using mass-cast as performance metrics. (a) Tie, stiffness prescribed. (b) Panel, stiffness prescribed. (c) Panel, strength prescribed. (d More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006097
EISBN: 978-1-62708-175-7
..., toughness, and impact resistance; low coefficient of friction; and good antigalling characteristics. Three types of materials are generally found suitable for making tools and dies for compaction of stainless steel powders: carbides, tool steels, and high-speed steels. (Zirconia-base ceramics have been used...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005531
EISBN: 978-1-62708-197-9
... and vertical springback. Fig. 27 Delamination cracking may occur as the part expands elastically during ejection from the die Die Design Modeling of the elastic behavior of dies during compaction can be used to address some particularly perplexing design problems. For example, shelf dies...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006022
EISBN: 978-1-62708-175-7
... Processing For the production of PM parts in high volumes, compaction is carried out in rigid dies. In most instances, the metallic powders are mixed with a lubricant (e.g., ethylene bisstearamide) to reduce interparticle friction during compaction and to facilitate ejection of the compacted parts...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006080
EISBN: 978-1-62708-175-7
.... 1a ). Forging is carried out on high-speed presses that are automated for mass production. Hot pressing, on the other hand, involves compression of loose powder or a powder compact fitted tightly in the die cavity, similar to repressing, resulting in very little lateral deformation, as shown in Fig...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001105
EISBN: 978-1-62708-162-7
.... The powder mixtures are compacted at pressures of 35 to 100 MPa (5 to 14.5 ksi). The predominant method involves pressing dry wax-lubricated powder in hardened steel dies with double-action opposing punches. For long rods or tubes of uniform cross section, these dies are used for the extrusion of a paste...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006053
EISBN: 978-1-62708-175-7
... are typically round or polygonal with straight walls, with or without a central hole. They are produced in straight-wall dies with single-action tooling and a core rod for the central hole ( Fig 5 ). Green density and height can be independently adjusted in a straight-walled die. As with compaction in metallic...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004031
EISBN: 978-1-62708-185-6
..., or a combination of these. forming), in die casting, and in forming green die shoes. The upper and lower plates or castings powder metallurgy compacts. Die-casting and die forging. A forging that is formed to the that constitute a die set (punch and die holder). powder metallurgy dies are sometimes refer- required...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.9781627081856
EISBN: 978-1-62708-185-6