1-20 of 261 Search Results for

powder recycling

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006883
EISBN: 978-1-62708-392-8
..., the flowability of powder feedstock, and polymer part characteristics. The article describes the types of polymers in PBF, the processes involved in powder recycling, and the prospects of PBF in AM. In addition, the biomedical application of polyether ether ketone (PEEK) is also covered. biomedical...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006570
EISBN: 978-1-62708-290-7
..., binder jetting, and direct energy deposition. The discussion provides information on powder removal, powder recycling and conditioning, part removal, and part enhancement. The mechanism, applications, advantages, and limitations of mechanical, radiation, and chemical-finishing processes as well...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006582
EISBN: 978-1-62708-290-7
... a short discussion on binder jet AM and powder recyclability. additive manufacturing nickel-base superalloys strengthening mechanisms texture control NICKEL-BASE SUPERALLOYS are employed in a wide range of applications where materials are required to withstand harsh operating environments...
Image
Published: 30 June 2023
Fig. 2 Materials life cycle in additive manufacturing, illustrated by icons and flow diagrams of material movement across the stages of powder production, the AM process itself, powder recycling, postprocessing, testing, and certification. Source: Carpenter Additive More
Image
Published: 15 June 2020
Fig. 4 Distribution of Inconel 718 alloy powder after repeated recycles. Source: Ref 1 More
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0007021
EISBN: 978-1-62708-439-0
... of material movement across the stages of powder production, the AM process itself, powder recycling, postprocessing, testing, and certification. Source: Carpenter Additive Powder Production Elemental or prealloyed feedstock can be used to produce high-quality powder ( Fig. 2 ). Elemental raw forms...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006052
EISBN: 978-1-62708-175-7
... a higher level of impurities than hard scrap, and nearly all soft scrap is recycled through the full hydrometallurgical, or APT, route. Soft scrap generated from scrapping RTP powders is commonly recycled by remilling if powder properties can be met. Hard scrap, by comparison, consists of worn tools...
Image
Published: 30 September 2015
Fig. 7 Fusion-bonded epoxy powder must be stored in a dry, controlled-temperature environment. Dry compressed air (−40 °C, or −40 °F, dewpoint) in the fluidized bed removes moisture from recycled powder. Electrostatic spray application is the normal pipe-coating procedure. Courtesy of J.A More
Image
Published: 30 June 2023
as a function of total incident energy. Two separate lines are presented: for the single-batch recycling strategy, whereby the powder is directly reused following sieving, and for the top-off strategy, in which virgin powder is added to each used batch to the original mass and blended before reuse. Source More
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006862
EISBN: 978-1-62708-392-8
..., the remaining unused powders can be recycled. In contrast, the wire-fed DED process has increased process efficiency and surface quality, but it is susceptible to vibration and disturbances and requires a moderate-to-high degree of control ( Ref 83 ). The powders used in the DED process are generally...
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
..., the often high cost of raw materials (particularly powder feedstock) motivates feedstock recycling. Even builds with tightly packed, multiple components produce a significant quantity of unused powder. This raises the likelihood of variations in feedstock powder chemistry and morphology that may cause...
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
... automotive applications. Recycled content of 5 to 15% by weight has been achieved, with up to 25% believed to be possible. (Virgin SMC contains up to 40% filler by weight.) The recycled material has the added bonus of weight savings, because a blend of powdered polymer and calcium carbonate is less dense...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006485
EISBN: 978-1-62708-207-5
... Abstract Ingot casting is the vital conduit between molten metal provided by primary production and recycling, and the manufacture of aluminum and aluminum alloy products. This article discusses various ingot forms, such as remelt ingot, billets, ingots for rolling, fabricating ingot...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001118
EISBN: 978-1-62708-162-7
... Abstract Many nonferrous metals, including aluminum, nickel, copper, and others, are among the few materials that do not degrade or lose their chemical or physical properties in the recycling process. As a result, these metals can be recycled an infinite number of times. This article focuses...
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
... retesting and rejection, certification, identification, and packaging. Thermal Issues Depending on the thermal stability of the polymer, unused powder can be recycled from previous builds. Laser-based PBF is accomplished at elevated temperature, where usually the powder bed temperature is a few...
Book Chapter

By John C. Bittence
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003222
EISBN: 978-1-62708-199-3
... Abstract This article focuses on the recycling of metals including iron and steel, stainless steel, superalloys, nickel, aluminum, copper, precious metals, lead, magnesium, tin, titanium, and zinc. It provides information on the identification and sorting of scrap metals and discusses...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003050
EISBN: 978-1-62708-200-6
..., from powder processing to fabrication, firing, and glazing. If this waste cannot be minimized or eliminated, it is recycled back into the process. Obviously, raw materials and green (unfired) scrap are easier to recycle, because further processing is not usually required (unless the material...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006007
EISBN: 978-1-62708-172-6
... shelf life. The manufacturer provides information on expected shelf life and storage conditions. Most call for storage at less than 27 °C (80 °F). Recycled powder should be used as it is generated. If that is not possible, it is important that it is stored in a well-sealed container to avoid moisture...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005632
EISBN: 978-1-62708-174-0
... to the existing base component for repair, refurbishment, or part modification. Full density of the deposited material may be more difficult to achieve than processes that maintain a larger molten pool. Variants of the process include powder heating to increase deposition rates and powder recycling to reduce...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006989
EISBN: 978-1-62708-439-0
... rapidly toward a net-zero carbon technology where possible. Sustainability can be increased through AM approaches, including such things as powder recycling and improvements in buy-to-fly ratios. However, the enabling of technologies such as hydrogen fuel systems and advanced heat exchangers to optimize...