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conventional die compaction

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Published: 01 January 1997
Fig. 5 Minimum wall thickness for conventional die compaction. Source: Ref 8 More
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002486
EISBN: 978-1-62708-194-8
... conventional die compaction conventional press method conventional sinter method density metal injection molding powder forging powder metallurgy THE POWDER METALLURGY (P/M) process is a near-net or net-shape manufacturing process that combines the features of shape-making technology for powder...
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
... reduced by proper sintering practice or broken up and dispersed by shear deformation during forging. Preforms for forging are fabricated primarily by conventional die compaction, although dry bag isostatic compaction has also been used for some applications. The overall density of the preform has...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003113
EISBN: 978-1-62708-199-3
... compaction (MIM powder, 10 to 20 μm; conventional die-compaction powders, 50 to 150 μm). The binders are formulated specially to provide the proper rheological properties during injection molding as well as ease of binder removal after the molding step. Once the part is ejected from the mold, the binder...
Book Chapter

By Erhard Klar
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003185
EISBN: 978-1-62708-199-3
... particles, or precipitates forming on the surfaces during processing. These boundaries are usually visible by metallography and responsible for low ductility and deterioration of other properties of parts made from such powders. punch Part of a die or compacting tool set that is used to transmit...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006032
EISBN: 978-1-62708-175-7
... size, and particle porosity. Spherically shaped solid particles (typical of many gas-atomized powders) have such low green strength that they cannot be used in conventional die compaction. Many water-atomized powders have an irregular particle shape with a solid bulk structure. Such powders typically...
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
... processes used in production of the component. Pressing of Copper Powders The most frequent method for the consolidation of copper powders is by conventional uniaxial pressing using opposing punches in a rigid die at ambient temperature. Copper powders are most often compacted using mechanical...
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 one lower punch within a die cavity, similar to conventional compaction tooling ( Fig. 3 ). In this case, the preform shape is considerably simpler and smaller than the finished part shape and dimensions ( Fig. 12 ). This allows for significant plastic flow during the forging stroke. During plastic...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006045
EISBN: 978-1-62708-175-7
... produced from titanium and titanium hydride powders. (a) Comparison of the influence of compaction pressure on sintered densities of each. (b) The microstructure of sintered Ti-6Al-4V material produced from titanium hydride. Source: Ref 15 Conventional die pressing and sintering was used...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001042
EISBN: 978-1-62708-161-0
... and other P/M and conventional tool steels at indicated hardnesses Typical applications for CPM 10V include punches and dies for cold-forming and stamping operations, powder metal compaction tooling, roll-forming rolls, wood-working tools, wear parts, and so on. CPM 10V should also be considered...
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
.... For the manufacture of most parts, consolidation is performed by conventional uniaxial pressing using opposing punches in a rigid die at ambient temperature. The compaction pressure primarily depends on the part geometry and the amount and type of lubricant admixed into the powder. The powder particle shape...
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
... of the neutral zone may be adjusted by varying the pressure exerted by the upper and lower punches. Compaction in rigid dies is limited to part shapes that can be ejected from the die cavity. Parts with undercuts, reverse tapers, threads, and so forth, are not generally practical. Such features are formed...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006114
EISBN: 978-1-62708-175-7
... pressing and tooling considerations In view of the press capacities required for compaction, the sizes of gears are limited. The gear thickness or face width is restricted by the requirement that the depth of the die cavity and the stroke of the press must be at least 2 to 2 1 2 times...
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
... Abstract This article provides an overview of the compaction of metal powder in a rigid die and reviews the compaction characteristics of stainless steel powders, including green density, compressibility, green strength, apparent density, flow rate, and sintered density. It describes...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006132
EISBN: 978-1-62708-175-7
... as sensible precautions, such as grounding of equipment, are taken, aluminum powder can be handled in a safe manner, both in the powder production facilities and in the part-making plants, up to the compacting stage of the PM process. The conventional PM process requires the addition of a lubricant...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006085
EISBN: 978-1-62708-175-7
... of spherical and other difficult-to-compact powders to produce a billet form Improved lubricity and metal flow at the die interface by proper selection of the can material Isolation of the principal material from the extrusion die and region of highest shear, which is an important consideration...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
... pressure acting in a uniaxial direction. The process is sometimes referred to as dust pressing, die pressing, or uniaxial compaction. The compaction force is generally applied only in the vertical direction by counteracting mechanical or hydraulic rams. Complex shapes possessing multiple holes, levels...
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
... have been milled to a particle size of 325 mesh or finer, the mixtures are dried before further processing and use. A lubricant is then added, and those powder mixtures destined for compaction in automatic presses are agglomerated so that they can flow freely from the hopper to the compacting die...
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
... mechanical properties. cold re-pressing ferrous powder metallurgy materials heat treatment infiltration powder compacting powder forging powder preparation secondary operations sintering POWDER METALLURGY (P/M) in its simplest form consists of compressing metal powders in a shaped die...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005127
EISBN: 978-1-62708-186-3
... sheet is often required to protect the sheet. The sheet can either be deformed into a cavity or formed over a male die. Figures 1 and 7 show some examples of sheet forming operations carried out by explosive forming. The main advantage of this technique over more conventional techniques is that one...