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powder compaction
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Published: 01 November 2010
Fig. 3 Steps in powder compaction. A feed shoe provides powder to fill the die cavity, the upper and lower punch move toward each other to compact the powder, the lower and upper punches move upward to eject the part from the die, and the fill shoe removes the previous part and refills the die
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Published: 30 September 2015
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Published: 01 December 1998
Fig. 29 Tool motions during a powder compaction cycle, showing the sequence of powder fill, pressing, and ejection. Source: Ref 4
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Published: 01 November 2010
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Published: 01 November 2010
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Published: 01 November 2010
Fig. 26 Illustration of powder compaction as predicted by the finite-element analysis model in Fig. 25
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Book: Powder Metallurgy
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
..., green machining, and injection molding. carbide powders cold isostatic pressing extrusion green machining injection molding powder compaction powder consolidation uniaxial pressing CONSOLIDATION and shaping of grade powders is carried out using several methods, depending on the size...
Abstract
Consolidation and shaping of grade powders is carried out using several methods, depending on the size, complexity, shape, and quantity of parts required. This article details the powder consolidation methods of carbide powders: uniaxial pressing, cold isostatic pressing, extrusion, green machining, and injection molding.
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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
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Published: 30 September 2015
Fig. 24 Effect of frequency on core loss for insulated iron-powder compact (AncorLam) and lamination steel. With increasing frequency, core loss for lamination steel increases at a faster rate than for insulated composite. Source: Ref 27
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Published: 30 September 2015
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Published: 30 September 2015
Fig. 12 Relative density versus time during the sintering of copper powder compact (particle size = 11 μm; green density = 70%) at 980 °C in hydrogen. Source: Ref 100
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Published: 30 September 2015
Fig. 13 Schematic evolution of a powder compact during liquid-phase sintering. The three dominant stages overlap significantly
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Published: 30 September 2015
Fig. 15 Densification curves for 98% W-1% Ni-1% Fe powder compact with different tungsten particle sizes (1 μm and 5 μm) during heating and isothermal sintering at 1460 °C (2660 °F). Source: Ref 110
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Published: 30 September 2015
Fig. 10 Transverse rupture strength of iron, copper, and graphite powder compacts. Sintered to a density of 6.8 g/cm 3 in endothermic gas. Lines represent compositions having the same transverse rupture strength, given in MPa with ksi equivalent values in parentheses; combined carbon
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Published: 01 December 1998
Book: Powder Metallurgy
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...
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 the influence of compaction characteristics of stainless steel powders in tool materials selection, lubrication, annealing, double pressing/double sintering, and warm compaction.
Book: Powder Metallurgy
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
... Abstract This article describes several factors, which help in determining the compressibility of metal powders: particle shape, density, composition, hardness, particle size, lubrication, and compacting. It discusses the uses of annealing metal powders and describes compressibility testing...
Abstract
This article describes several factors, which help in determining the compressibility of metal powders: particle shape, density, composition, hardness, particle size, lubrication, and compacting. It discusses the uses of annealing metal powders and describes compressibility testing of the powders. The article details green strength and its mechanism and the variables affecting the strength. It also discusses two test methods for determining the green strength: the Rattler test and the transverse bend test.
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Published: 30 September 2015
Fig. 12 Green strength versus compaction pressure for various types of powder. (a) Copper, iron and steel powders. (b) Iron powders
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Published: 30 September 2015
Fig. 4 Example compaction curve for an iron-base powder showing the relative density model results versus compaction pressure with no friction and with a friction coefficient of 0.1 for two compact samples. Source: Ref 24
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Published: 30 September 2015
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