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scrap processing

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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.a0005224
EISBN: 978-1-62708-187-0
... thixotropic slurry is formed directly from the melt via special thermal treatment/management of the system; the slurry is subsequently fed into the die cavity. Of these two routes, rheocasting is favored in that there is no premium added to the billet cost, and the scrap recycling issues are alleviated...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005199
EISBN: 978-1-62708-187-0
... around a steel shell that melts down with the first heat, leaving a sintered lining. Basic linings are often preferred; a rammed lining of magnesia grain or a clay-bonded magnesia crucible can be used. The process consists of charging the furnace with steel scrap and then passing a high-frequency...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003995
EISBN: 978-1-62708-185-6
... property requirements, can always be downgraded. However, a product with very high dimensional variability usually has to be scrapped. Thus, rolling mills have been designed to process steels for excellent dimensional control, while optimum mechanical properties of a given steel grade are not achieved...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005461
EISBN: 978-1-62708-196-2
... field analysis plastic deformation finite-element analysis fracture model IN VERY BROAD TERMS, MODELING OF FRACTURE DURING DEFORMATION PROCESSES has been a major focal point for production engineers since cracking first occurred as a source of scrap in manufacturing. G. Sachs, in his 1954...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003065
EISBN: 978-1-62708-200-6
... discrete defects, which necessitates the scrapping of any glass containing them. The preferred size distribution of sand contains no more than 5 to 10% of particles retained on 40 mesh, and no more than 5 to 10% can pass 140 mesh. Particle size distribution analysis for all the major batch materials...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005307
EISBN: 978-1-62708-187-0
... Abstract This article describes the control of alloy composition and impurity levels in die casting of zinc alloys based on agitation, use of foundry scrap, and melt temperature and fluxing. It reviews the process considerations for the melt processing of the zinc alloys. The process...
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
... equipment and procedures used for small-scale and large-scale scrapping operations. identification and sorting methods recycling of metals scrap metals scrap processing WHILE RECYCLING might appear to be a modern concept to the average layperson, it has been in practice in the metals industry...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003050
EISBN: 978-1-62708-200-6
... as raw materials for other processes. This article describes the recycling of in-process scrap and industrial wastes (fly ash, red mud, metallurgical waste, and other waste products), and applications of these recycled products. It focuses on environmental regulations such as Resource Conservation...
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
... hole, water-cooling system, preheat and furnace scrap burners, and ladles. The article describes the acid and basic steelmaking practices. It discusses the raw materials used, oxidation process, methods of heat reduction, and deoxidation process in the practices. The article provides a discussion on...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003223
EISBN: 978-1-62708-199-3
... Abstract Product design greatly influences the recycling and reuse of manufacturing materials. This article presents a design for recycling strategy based on ease of disassembly, minimizing process scrap, using readily recyclable materials, and labelling or otherwise identifying parts. It also...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005931
EISBN: 978-1-62708-166-5
... program in a flexible manner, allowing steps to be controlled using the furnace control or work thermocouples. Flexibility in the event of a failed work thermocouple is a critical feature that could make the difference between a scrapped load and a successful run. Data recording rates and storage...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003215
EISBN: 978-1-62708-199-3
... constant anode area, and little or no anode scrap is produced. Cadmium balls are usually 50 mm (2 in.) in diameter and weigh 0.60 kg (1 1 4 lb) per ball. Fig. 3 Still plating tank with spiral steel holders for cadmium ball anodes Cyanide cadmium baths can be operated over a wide...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009015
EISBN: 978-1-62708-187-0
... only provide a brief overview only for general approximate comparison. Ferrous metals, steel, gray and ductile iron, account for nearly 75% of all metals cast. On the nonferrous side, high-pressure die casting (HPDC) is the dominant process, largely because it readily accommodates scrap-based secondary...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.9781627081979
EISBN: 978-1-62708-197-9
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... repeats the process. The mold is not allowed to cool to room temperature between pours. The first few pours on the mold each day are made to heat the mold, and castings made from these pours are generally scrapped. To minimize the number of castings that are scrapped, molds are normally preheated...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.9781627082907
EISBN: 978-1-62708-290-7
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005286
EISBN: 978-1-62708-187-0
... control of mill entry temperature and the reduction/cooling sequence in the mill. Production rates can exceed 5700 kg/h (12,500 lb/h). Concepts for the direct production of extrusions from either molten metal or compacted scrap have been explored and developed. Residual stress levels can be sufficient...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005187
EISBN: 978-1-62708-187-0
..., % All sand casting 75 All permanent and semipermanent mold >5 All die casting 19 All other <1 On the nonferrous side, high-pressure die casting is the dominant process, largely because it readily accommodates scrap-based secondary alloys. Among metal mold processes, it enjoys...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
.... Consequently, auxiliary impressions in the dies can be used to preform the billet to a shape that will best fill the finishing impressions in the dies. This helps create proper grain flow, soundness, and less scrap, with minimum die wear. When adequate preliminary impressions cannot be incorporated in the same...