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die compaction

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Image
Published: 30 April 2020
Fig. 6.4 Uniaxial die compaction involves the application of pressure on the loose granules. The pressure causes densification by a sequence of repacking and sliding, followed by deformation. The die forms the outer wall, while the punches compact the powder. More
Image
Published: 30 April 2020
Fig. 6.8 Tooling pieces and assembly for die compaction of the cluster gear shown in the box. The two-level gear requires a core rod, inner and outer lower punches, die, and upper punch, with motions coordinated to properly position and compact the granules. More
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Published: 30 April 2020
Fig. 6.9 Representative die compaction products. (a) Timing sprocket. (b) Exhaust flange. (c) Metal cutting insert More
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Published: 30 April 2020
Fig. 6.11 Mechanical die compaction press More
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Published: 30 April 2020
Fig. 6.30 Productivity measured by the parts per minute possible in die compaction. The higher-compaction presses naturally run slower. More
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Published: 01 January 2015
Fig. 8.68 Micrographs of foams produced by die compaction and extrusion. (a) Cross section is perpendicular to the compaction direction. (b) Cross section is parallel to the extrusion direction. More
Image
Published: 30 April 2020
Fig. 9.4 Weibull plot for the fracture strength of die-compacted alumina containing a mixture of polyvinyl alcohol and polyethylene glycol. The plot shows the log of the measured strength versus the double logarithm of the failure probability function, where the slope gives a Weibull modulus More
Image
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
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290111
EISBN: 978-1-62708-319-5
..., die compaction, extrusion, injection molding, slip casting, slurry processes, and tape casting. Information on equipment setup, requirements, and the various factors influencing these processes are described. In addition, the chapter provides information on novel approaches and processing costs...
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...
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Published: 30 April 2020
Fig. 4.4 Scanning electron micrograph of milled ethylene bis-stearamide particles used to lubricate powder in die compaction More
Image
Published: 30 April 2020
Fig. 10.25 Example components fabricated from cemented carbides. (a) Bent-tube structure for centrifugal separation of sand and oil, formed by using powder injection molding. (b) Uniaxial-die-compacted indexed metal cutting insert More
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Published: 01 January 2015
to result in a broken-up structure. (d) HIP at 925 °C (1700 °F), 105 MPa (15 ksi), for 4 h in a ceramic mold. (e) Strain-energizing processed (SEP) powder using HIP at 870 °C (1600 °F), 105 MPa (15 ksi), for 2 h. (f) SEP powder fluid die compacted at 925 °C (1700 °F) More
Image
Published: 30 April 2020
Fig. 1.2 Several components produced from powder-binder mixtures. (a) Steel automotive engine timing sprocket fabricated using die compaction. Courtesy of American Honda Motor Company. (b) Alumina sleeve fabricated by cold isostatic pressing followed by green machining. (c) Honeycomb iron More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740373
EISBN: 978-1-62708-308-9
..., or by gravity, from a storage hopper into the die in an automated compacting press. With decreasing particle size, increasing amounts of fines (–325 mesh), and with more irregular particle shapes, powder flowability deteriorates. Moderate amounts of fines also provide for a good balance between sintering speed...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290001
EISBN: 978-1-62708-319-5
..., as well as die compaction. This book treats the science and technology behind these shaping options and details the technologies behind the removal of these polymeric materials and the thermal treatments associated with such a wide range of forming options. 1.1 Powder-Binder Fabrication Essentially...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290067
EISBN: 978-1-62708-319-5
... by the selection of binders customized to the anticipated shaping steps. Lubricants are surfactants and are commonly either dispersed in a solvent or added as small particles. Figure 4.4 is a scanning electron micrograph of a round lubricant designed to co-mix with a powder prior to compaction. In die...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000223
EISBN: 978-1-62708-312-6
... the furnace before addi- bulk volume. The volume of the powder fill in tional unsintered compacts are placed in the the die cavity. furnace. burnoff. The removal of additives (binder or billet. A compact, green or sintered, that will be lubricant) by heating. further worked by forging, rolling, or extru- sion...
Image
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
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.9781627083126
EISBN: 978-1-62708-312-6