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powder compaction

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Published: 01 August 2013
Fig. 13.7 Powder compaction. (a) A die is filled with powder. (b) The powder is compacted. (c) The compact is ejected. (d) The die is refilled as the part is pushed away. Source: Ref 13.1 More
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Published: 01 November 2013
Fig. 22 Tool motions during a powder compaction cycle, showing the sequence of powder fill, pressing, and ejection. Source: Ref 5 More
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Published: 01 June 2007
Fig. 4.1 Sketch showing various stages in metal powder compaction. Source: Ref 2 , 3 More
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Published: 01 November 2013
Fig. 23 Density distribution in a cylindrical nickel powder compact. Source: Ref 4 More
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Published: 30 April 2020
Fig. 6.6 Automated compaction involves a cycle where the powder-binder agglomerates are first placed in the die cavity, with the lower punch determining the initial charge deposited by the feed shoe. Next, the lower punch moves down, and the upper punch enters the die. Pressure is applied More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000039
EISBN: 978-1-62708-312-6
... Abstract This chapter discusses the methods by which stainless steel powders are shaped and compacted prior to sintering, including rigid die compaction, metal injection molding, extrusion, and hot isostatic pressing. It explains where each process is used and how processing parameters...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120047
EISBN: 978-1-62708-269-3
.../M compact, annealed and forged (c) 925 134 840 122 12 27 … … … … P/M compact, STA(g) 965 140 895 130 4 6 … … … … P/M, powder metallurgy; STA, solution treated and aged; HIP, hot isostatically pressed. (a) Charpy values at –40 °C (–40 °F). (b) ~94% dense. (c...
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Published: 01 July 2009
Fig. 19.7 Effect of compacting pressure on the sintered densities of −200-mesh beryllium powder compacts. Source: Hausner and Pinto 1949 More
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Published: 01 January 2015
Fig. 8.66 (a) Pseudobinary phase diagram for Ti-6Al-4V. X represents the hydride phase. CST, constitutional solution treatment. Refinement of the microstructure of Ti-6Al-4V powder compact using the thermohydrogen processing technique is shown in (b) as hot isostatic pressed coarse alpha laths More
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Published: 30 April 2020
Fig. 7.31 Laser dilatometer data collected on the dimensional change during solvent binder (PW, paraffin wax; PP, polypropylene; PE, polyethylene) removal for a carbonyl iron powder compact immersed in heptane. The compacts undergo sudden swelling at the start of the exposure but slowly shrink More
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Published: 01 December 2000
Fig. 7.7 Room-temperature smooth axial fatigue behavior of blended elemental and prealloyed powder metallurgy powder compacts of Ti-6Al-4V compared with wrought annealed material More
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Published: 01 December 2000
Fig. 12.42 Comparison of Ti-6Al-4V alloy room-temperature fatigue life scatter bands for several powder compact types (prealloyed, PA, and blended elemental, BE, powders) with wrought mill-annealed material (IM, ingot metallurgy) More
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Published: 30 April 2020
Fig. 6.2 Green machining is common after compacting powder-binder structures, prior to sintering. This micrograph shows holes drilled in a compact. Individual particles are discernible, and slight edge roughness is apparent from the machining operation. More
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Published: 01 July 2009
Fig. 19.1 Compactability curves at room temperature for attritioned beryllium powder of various mesh sizes. Source: Beaver and Lympany 1965 More
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Published: 01 July 2009
Fig. 19.3 Compacting behavior of beryllium powder annealed twice at 816 °C (1500 °F) and recompacted or annealed twice at 1038 °C (1900 °F) and recompacted. Source: Porembka et al. 1967 More
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Published: 01 January 2015
Fig. 8.46 Fatigue data of as-compacted plasma rotating electrode process powder and compacts with a modified microstructure. BUS, broken-up structure; TCP, thermochemical process; WQ, water quenched; AC, air cooled More
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Published: 01 December 2006
Fig. 5.74 Load variation in the extrusion of powder and spray compacted material compared with cast (Al18SiCuMgNi), indirectly extruded. 1, cast; 2, spray compacted; 3, compacted powder [ Mue 93 ] More
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Published: 01 December 2000
Fig. 7.6 Typical tensile properties of blended elemental titanium alloy powder compacts. Shaded areas represent observed ranges. More
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Published: 30 April 2020
Fig. 8.24 Sintered fractional density for 17-4 PH stainless steel versus hold time at four temperatures. By 1320 °C (2410 °F), the powder compact is essentially fully densified during the heating cycle, prior to any isothermal hold. More
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Published: 30 April 2020
Fig. 7.32 Binder removal by solvent immersion initially progresses rapidly, but as dissolution is from greater depth in the pores, the process dramatically slows. These 60 °C (140 °F) heptane immersion data are for an iron powder compact injection molded with a binder consisting of paraffin More