1-20 of 400 Search Results for

powder-binder processing

Sort by
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290201
EISBN: 978-1-62708-319-5
... Abstract This chapter provides details on powder-binder processing for three materials, namely precipitation-hardened 17-4 PH stainless steel, cemented carbides, and alumina. The types of powders, binders, feedstock, shaping processes, debinding, sintering cycles, compositions, microstructure...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.9781627083195
EISBN: 978-1-62708-319-5
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
... Abstract This chapter provides an introduction to powder processing of binders and polymers. It sets the context for the remainder of the book by providing an overview of the topics discussed in the subsequent chapters and by providing introduction to powder-binder fabrication and customization...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290261
EISBN: 978-1-62708-319-5
... Abstract This chapter includes a comprehensive set of definitions used in powder-binder processing. binder feedstock powders polymers Binder and Polymer Assisted Powder Processing Randall German and Animesh Bose DOI 10.31399.asm.tb.bpapp.t59290261 Copyright # 2020 ASM InternationalW...
Image
Published: 30 April 2020
Fig. 11.10 Example wear surface pattern taken from the geometry found in snake skin. This is an example of biologically inspired design. Powder-binder processing routes, such as via additive manufacturing, provide a means to adjust morphology and composition to mimic such a structure. More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290251
EISBN: 978-1-62708-319-5
... Abstract This chapter is intended to identify materials, processes, and designs that will lead to great advances in powder-binder forming technologies. It discusses some of the structures obtained through these advances in powder-binder technologies such as binder jetting and extrusion-based...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290139
EISBN: 978-1-62708-319-5
... Abstract Binder removal approaches involve various combinations of heat, solvents, vacuum, and pressure. In each variant, the goal is binder removal without component damage. This chapter addresses the factors that control success, showing how process decisions depend on the powder and binder...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290085
EISBN: 978-1-62708-319-5
... determine the appropriate mixing parameters. 5.1 Introduction Feedstock consists of powder and binder mixed at a target ratio. It is formulated to match the requirements of the forming process. Each technology has a target temperature, viscosity, or solvent content important to success. An example...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290035
EISBN: 978-1-62708-319-5
..., or natural polymers, such as palm oil, carnauba wax, or beeswax. Formulations are customized to the shaping process and may employ the addition of water, solvents, and surfactants. For example, in the case of powder injection molding, the binders are thermoplastic polymeric materials (relying on a mixture...
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
... that the component retains its shape through all the subsequent processing steps; it plays a strengthening role. Variations in the binder ingredients lead to significant strength differences. A demonstration is shown in Fig. 4.1 for injection-molded Fe-2Ni powder with a feedstock of 30 wt% ethylene vinyl acetate...
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
... applicable to these shaping processes. additive manufacturing cold isostatic pressing die compaction extrusion injection molding shaping slip casting slurry casting tape casting Various powders and powder-binder formulations are used with combinations of pressure and temperature to form...
Image
Published: 30 April 2020
Fig. 1.1 This flow chart illustrates the commonality of various powder-binder production processes, showing how powder and binder are mixed to form feedstock for shaping and sintering. More
Image
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
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
... using these techniques, particularly with water-atomized stainless steel powders and in the presence of binders and/or open porosity, the processing precautions described in Chapter 5, “Sintering and Corrosion Resistance,” need to be observed so that the corrosion resistance is not impaired. 4.1...
Image
Published: 30 April 2020
Fig. 2.1 Scanning electron micrographs of representative powders used in binder-assisted processing. (a) Nickel. (b) Cobalt-chromium alloy. (c) Tungsten carbide. In sequence, these powders were fabricated by vapor reaction, gas atomization, and mechanical attritioning. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000223
EISBN: 978-1-62708-312-6
... instrument according to a sweating. specified procedure. fraction. That portion of a powder sample F which lies between two stated particle sizes. fragmentation. The process of breaking a solid feedstock. A moldable mixture of powder and into finely divided pieces. binder (for metal injection molding). fill...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170573
EISBN: 978-1-62708-297-6
... success for nonmachining applications. Processing All cemented carbide and cermet components are manufactured by powder metallurgy (P/M) processing. The important steps include: Powder processing Powder treatment (e.g., mixing and milling of the various powders and the addition of a lubricant...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290009
EISBN: 978-1-62708-319-5
... to deagglomerate the particles. Powder characteristics depend on the synthesis route, chemistry, and impurities. Generally, the powders employed in binder-assisted processes are small to enable sintering, typically from 0.1 to 100 μm. The cost of powder varies considerably, so the selection of a fabrication route...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290169
EISBN: 978-1-62708-319-5
... is the same as employed for thermal expansion; Fig. 3.17 in Chapter 3, “Binder Constituents,” in this book shows a vertical dilatometer. The powder component is situated in the furnace, where it is contacted by using a counterbalanced measuring probe. Thermal expansion of the measuring device is subtracted...
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
... flow is solved by compounding the fine powder with the organic binder into a coarser-grained, flowable powder. Powders containing particles exceeding 177 μm (7 mils) are sometimes used in powder forging, hot isostatic pressing, and powder extrusion. These processes typically produce fully dense...