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feedstock mixing

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Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006141
EISBN: 978-1-62708-175-7
..., fracture toughness, magnetic properties, etc.). The process of MIM consists of mixing a small amount of organic material (binder phase) with the desired amount of powders of appropriate metals and/or alloys to form what is known as the feedstock. This feedstock can flow like polymeric materials under...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006555
EISBN: 978-1-62708-290-7
... laser and light sources. Metal parts are produced using electron and laser beam approaches. Virtually any pulverized material can be used in PBF when a suitable transient or permanent binder is mixed with the primary feedstock. Postprocessing may be used in the case of metal and ceramic parts to either...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006571
EISBN: 978-1-62708-290-7
... into powder bed with irregular particle morphology. (a) Schematic of large void formation. (b) Schematic of capillary cylinder model. Source: Ref 22 Processing mixed-material feedstock, commonly encountered in ceramic processing, also presents a challenge, especially in applications involving doping...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001462
EISBN: 978-1-62708-173-3
... be applied to a range of substrate materials, including metals, ceramics, plastics, and polymer composites. Thermal spray technology evolved and developed within the welding field because of similarities in the electrical and combustion equipment and the feedstock materials used in thermal spray with those...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003471
EISBN: 978-1-62708-195-5
... of ASR is the variability of the feedstock. Unlike pyrolyzing SMC prompt scrap, pyrolyzing ASR requires dealing with a constantly varying mix of polymers and other materials, making the process difficult to control. Hydrolysis Recycling through hydrolysis can be used for recovering the monomers...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005503
EISBN: 978-1-62708-197-9
..., because of the low overall cost in a high level of shape complexity. Powder injection molding (PIM) builds on the long-recognized success of plastic molding by using a high-particle-content thermoplastic as feedstock. The steps in PIM involve first mixing selected small powders (usually smaller than 20 µm...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003013
EISBN: 978-1-62708-200-6
... chemical feedstocks and household/industrial fuel. Fig. 2 How tertiary recycling affects the life cycle of a plastic The mechanical processes of secondary recycling have limited ability to separate and purify extremely contaminated or mixed plastics. Limitations also exist in product...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001053
EISBN: 978-1-62708-161-0
... such as chemicals. Recycled scrap is a major raw material for the metals industry, supplying up to 100% of the feedstock for some products. Consequently, the scrap metal recycling industry is very important to the economy, providing tens of thousands of jobs across the United States. In addition, the significant...
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
..., and surfactants with a dried grade powder to achieve the desired solids loading, injecting the thermoplastic feedstock into a die, removing from the die, and debinding in one or more stages prior to sintering ( Ref 4 , 5 , 6 , 7 ). The additional steps of mixing and debinding, as well as a longer cycle time...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... properly defining load and service conditions for a part, materials selection is key. Most metal AM processes are highly constrained in terms of what feedstocks are viable. For example, laser PBF requires that metal powder feedstocks have a relatively prescribed size distribution and shape and a certain...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006021
EISBN: 978-1-62708-175-7
...Abstract Abstract This article discusses the process details of metal powder injection molding of microcomponents and the powder particle characteristics of feedstock and property requirements of binders. It reviews important characteristics to be considered in the processing steps: venting...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003790
EISBN: 978-1-62708-177-1
... the macroscopic examination of defects, which occur in semisolid metalworking with illustrations. It discusses the macroscopic examination of gating systems and semisolid feedstocks. The article also provides information on feedstock microstructures, direct semisolid metalworking component microstructures...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005727
EISBN: 978-1-62708-171-9
... to thermal spraying, and offers an understanding for choosing particular feedstock materials that are classified based on the thermal spray process, material morphology, chemical nature of the material, and applications. Sieving, the most common method of separating powders into their size fractions, is also...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005204
EISBN: 978-1-62708-187-0
... at the end of 2007. Electron beam melting and casting includes melting, refining, and conversion processes for metals and alloys. In electron beam melting, the feedstock is melted by impinging high-energy electrons. Electron beam refining takes place in vacuum in the pool of a water-cooled copper...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003015
EISBN: 978-1-62708-200-6
... shape commonly used in processing. Raw materials with the correct final properties are purchased from resin manufacturers. These are generally in final feedstock form, although when large tonnages are involved, such as in pipe manufacture, materials may need to be compounded to obtain the desired...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006562
EISBN: 978-1-62708-290-7
... Prairie, MN, USA) fused deposition modeling (FDM) system to extrude ceramic-loaded thermoplastic filaments. The feedstock filament was liquefied (melt), extruded, deposited, and resolidified by cooling to retain its shape. Since then, the process was further improved and is capable of producing high...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005736
EISBN: 978-1-62708-171-9
...Abstract Abstract Thermal spray processes involve complete or partial melting of a feedstock material in a high-temperature flame, and propelling and depositing the material as a coating on a substrate. This article describes the properties of sprayed electronic materials, including dielectrics...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003700
EISBN: 978-1-62708-182-5
.... Sulfide and other sulfur species contained in the hydrocarbon stream can also be corrosive at high concentrations and at high temperatures. Many processes in the refinery involve distillation, often fractional, of hydrocarbons. In most of these distillation processes, water is present in the feedstock...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006543
EISBN: 978-1-62708-290-7
... is the ability to nest parts in a single build easily, which increases part-packing density; parts also build faster without supports. Polymer PBF feedstock is generally certain types of semicrystalline polymers, with the most popular being polyamide (nylon), with or without composite additions such as flame...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006465
EISBN: 978-1-62708-190-0
.... However, examination and identification of these defects in finished components can be useful for determining and remedying defect sources, particularly for materials or processes that may not be thoroughly characterized. This review is primarily focused on full melting processes that use powder feedstock...