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die compaction

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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
... Abstract Warm compaction uses both powder heating and die heating to effect higher component densities, whereas warm die compaction uses only die heating to achieve higher density. This article explains the influences of green and sintered properties and pore-free density during compaction...
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Published: 30 September 2015
Fig. 12 Optimization for uniform density distribution during die compaction for a cutting tool fabricated from WC-Co. (a) Histogram for various processing conditions. (b) Green density distributions in the initial and optimum designs. Source: Ref 35 More
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Published: 30 September 2015
Fig. 13 Optimization to minimize the green density gradients during die compaction of a steel hub component. (a) Compaction tool set and analysis domain. (b) Variation of objective function during optimization iteration. (c) Green density distributions in the initial and optimum designs More
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Published: 30 September 2015
Fig. 15 Effect of density distribution after die compaction on sintering and the formation of corner cracks. (a) Simulation result of green density gradients. (b) Experimental result of green compact. (c) Experimental result of sintered compact. More
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Published: 30 September 2015
Fig. 12 Split die compaction sequence More
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Published: 01 November 2010
Fig. 12 Optimization for uniform density distribution during die compaction for a cutting tool fabricated from WC-Co. (a) Histogram for various processing conditions. (b) Green density distributions in the initial and optimum designs. Source: Ref 35 More
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Published: 01 November 2010
Fig. 13 Optimization to minimize the green density gradients during die compaction of a steel hub component. (a) Compaction tool set and analysis domain. (b) Variation of objective function during optimization iteration. (c) Green density distributions in the initial and optimum designs More
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Published: 01 November 2010
Fig. 15 Effect of density distribution after die compaction on sintering and the formation of corner cracks. (a) Simulation result of green density gradients. (b) Experimental result of green compact. (c) Experimental result of sintered compact. More
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Published: 01 January 1997
Fig. 5 Minimum wall thickness for conventional die compaction. Source: Ref 8 More
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Published: 30 September 2015
Fig. 52 Microstructure of a copper infiltrated valve seat insert die compacted from a mixture of water atomized HSS, solid state lubricant and intermetallic phase powders. Courtesy of Bleistahl More
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Published: 30 September 2015
Fig. 2 Effects of compaction die temperature and compaction pressure on green density of a PM compact. RT, room temperature More
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Published: 30 September 2015
Fig. 2 Density difference after altering the die fill and compaction conditions on the same type of part. Unetched More
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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 More
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Published: 01 November 2010
Fig. 28 Shelf die for compaction of an axisymmetrical part More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006033
EISBN: 978-1-62708-175-7
... where these data help in the development of a constitutive model for sintering simulation. Finally, the article provides information on the simulation approaches used to optimize die compaction and sintering. compaction continuum modeling continuum plasticity models deformation densification...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006074
EISBN: 978-1-62708-175-7
... Abstract This article describes the unique aspects of cold isostatic pressing (CIP) in comparison with die compaction, for powder metallurgy parts. It details the components of CIP equipment, including pressure vessels, pressure generators, and tooling material. The article reviews the part...
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: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005502
EISBN: 978-1-62708-197-9
... compaction changes during the split-second pressure stroke, because lubricant (polymer) particles deform and undergo viscous flow to the die wall, effectively changing friction constantly during compaction. Thus, the simulations are approximations using extrapolated data and simplified relations...
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Published: 01 August 2018
Fig. 5 Defects in green PM compacts. (a) Artificial defect caused by the inclusion of a thin wax sliver in the die fill. Unetched. (b) Artificial defect produced by partially filling a die, compacting the powder at 345 MPa (50 ksi), adding more powder, and compacting at 620 MPa (90 ksi 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
... some of the developments for PM presses in the last 40 years. Other recent improvements in compaction technology include: Split-die techniques to make multilevel parts having different peripheral contours at different levels Punch rotation capability to facilitate production of helical gears...