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scrap metals

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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 Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001053
EISBN: 978-1-62708-161-0
... Abstract A significant amount of the worldwide demand for metals is met with recycled materials acquired by metal producers in the form of purchased scrap. This article focuses primarily on the methods and technology used to process and repurpose the vast amounts of purchased scrap...
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
... properties of the metal. In the early days of the developing aluminum industry, the primary producers attempted to maximize new metal sales to reduce the unit price and make aluminum competitive with the traditional construction metals. They were not interested in scrap recycling, leaving that activity...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005118
EISBN: 978-1-62708-186-3
.... cam trimming dies conventional trimming dies finish trimming material handling rough trimming scrap handling trimming trimming dies FOR MANY TYPES of stamped parts, excess metal must be allowed for holding purposes during operations that shape the metal into the form of the part...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006484
EISBN: 978-1-62708-207-5
... furnaces used for melting aluminum. aluminum casting dross metal recycling metallic scrap refining melting thermal processing ALUMINUM RECYCLING started less than 20 years after the commercialization of the Hall-Héroult process in 1888, driven by the high value and several unique...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005197
EISBN: 978-1-62708-187-0
... bed of coke. Alternate layers of scrap metal and coke are charged into the top of the cupola. In its slow descent, the scrap metal is heated to the melting temperature by direct contact with the upward flow of the hot gases from the coke combustion. The molten-metal droplets collect in the inner...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006121
EISBN: 978-1-62708-175-7
... Abstract Refractory metals are extracted from ore concentrates or scrap, processed into intermediate chemicals, and then reduced to metal, usually in powder form. This article discusses the raw materials needed and the processing steps for producing pure and alloyed refractory metal powders...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005176
EISBN: 978-1-62708-186-3
... Abstract Electric arc cutting is used on ferrous and nonferrous metals for rough severing, such as removing risers or scrap cutting, as well as for more closely controlled operations. This article describes the operating principles, equipment selection, process variables, and safety measures...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006572
EISBN: 978-1-62708-210-5
... Abstract Alloy 362.0, low-iron premium die-casting alloy, is made from recycled secondary metal scrap and was developed to have equivalent or better mechanical properties than Silafont-36 and/or Aural-2. This datasheet provides information on key alloy metallurgy, processing effects on physical...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003141
EISBN: 978-1-62708-199-3
... Abstract Titanium metal passes through three major steps during processing from ore to finished product: reduction of titanium ore to sponge (porous form), melting of sponge and scrap to form ingot, and remelting and casting into finished shape. This article describes primary fabrication...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005195
EISBN: 978-1-62708-187-0
... ferrous scrap or molten bath. Over 80% of arc furnaces used for steel castings are alternating current furnaces with three electrodes. These electrodes strike an arc on the cold metal scrap or molten metal to impart energy to the bath and melt or superheat the furnace. Control of the electrode level above...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006329
EISBN: 978-1-62708-179-5
...% of the metal charge, depending on the iron temperature required, the percentage of steel scrap used, and many other variables. Foundry coke must be strong to support the charge materials in the cupola stack and have sufficient impact strength to maintain its size during the impact of charging. These mechanical...
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
..., Iron, Nickel Cobalt is the most common binder in hard metal production, but nickel and iron are also used. Cobalt processing is reviewed in detail in Ref 24 . The largest sources of cobalt are from secondary ore sources (i.e., nickel laterites) and cemented carbide scrap. Typically...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003472
EISBN: 978-1-62708-195-5
... Dry hearth furnace for recovering aluminum from preform reinforced aluminum-matrix MMC Quality Issues Most recycling of metal matrix composites occurs during manufacture of the products, typically as a way to recover gates, risers, stubs, or scrap. Material control at the point...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005108
EISBN: 978-1-62708-186-3
..., and Plate” in this Volume. The prime objective in planning a blanking-die operation is to design a blank with enough metal to shape the part and, at the same time, prevent excessive scrap loss due to trimming. The types of blanks used in sheet-forming operations fall into four convenient...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005274
EISBN: 978-1-62708-187-0
... die casting machine, respectively, to generate SSM slurries. The advantages of the process include process simplicity, low cost, a wide process window, the feasibility of recycling scrap metal within the process flow stream, and so on. Fig. 7 Schematic of the original Continuous Rheoconversion...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005267
EISBN: 978-1-62708-187-0
... separately from other metals if it is accumulated in batches. If conveyed back to a central melter, conveyers and the furnaces should be covered when maintenance work is being done overhead. Floors and tables should also be kept clean. If there is any doubt as to the purity of the scrap, it should...
Image
Published: 01 December 2008
Fig. 2 Examples of electron beam melting and casting processes. (a) Button melting with controlled solidification for quantitative determination of low-density inclusions. (b) Consolidation of raw material, chips, and solid scrap to consumable electrodes for vacuum arc or electron beam More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003223
EISBN: 978-1-62708-199-3
... when selecting a manufacturing process. For example, the scrap value of turnings is low; that of punchings is high. The resale value of alternative metals/alloys for any particular process should also be considered. Once these values have been optimized, the value of the recycled scrap should...
Image
Published: 01 December 2008
Fig. 3 Schematics of electron beam consolidation and drip melting processes. (a) Consolidation of coarse and solid scrap. (b) Continuous consolidation of raw material, chips, and solid scrap by direct feeding into a continuous casting crucible. (c) Drip melting of horizontally fed compacts More