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pack rolling

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Published: 30 June 2023
Fig. 15.3 Pinholes in aluminum foil. (a) Several layers of pack-rolled thin foil (two foil thicknesses rolled together). A pinhole results from a large particle that has forced a hole in the other half of the doubled foil. (b) The average pinhole count is affected by foil thickness. Courtesy More
Image
Published: 01 August 1999
Fig. 4.9 (Part 1) Commercial grades of annealed low-carbon strip. (a) Semikilled grade. 0.08C-0.05Si-0.38Mn (wt%). Pack rolled, box annealed, and temper rolled. 125 HV. 3% nital. 100×. (b) Semikilled grade. 0.08C-0.05Si-0.38Mn (wt%). Pack rolled, box annealed, and temper rolled. 125 HV. 1 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290137
EISBN: 978-1-62708-306-5
... to be welded are merely stacked and passed through the rolls. The second method, usually termed pack rolling , involves sealing the parts to be rolled in a pack or sheath and then roll welding the pack assembly. The first method is more generally employed in the cold welding of ductile metals and alloys...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480207
EISBN: 978-1-62708-318-8
... done in two steps. The first consists of cross rolling the sheet bar to an intermediate thickness (or breakdown size) that is approximately 3 to 4 times the final rolled thickness. The second involves finish rolling (often in a pack or sandwich assembly) to the desired hot rolled size. Cross rolling...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560039
EISBN: 978-1-62708-291-4
... in comparatively simple mills. Finally, they were cold rolled to gauge, being rolled in packs for the thinner gauges (pack rolling) . For some time, however, both hot and cold rolling has been carried out in multistand continuous mills (continuous rolling) . Coils of strip are then produced that can either...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340339
EISBN: 978-1-62708-427-7
... by the customer (e.g., < 500/m 2 ) are set as part of the quality-assurance procedures. Fig. 15.3 Pinholes in aluminum foil. (a) Several layers of pack-rolled thin foil (two foil thicknesses rolled together). A pinhole results from a large particle that has forced a hole in the other half of the doubled...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390001
EISBN: 978-1-62708-459-8
... hammered from a cast ingot, with up to 50 layers forged in a pack for tinplate; rolling had to wait until rolls could be turned accurately. Wide lead sheet was rolled in the 18th century, and nonferrous metal sheets were soon cold rolled in gradually increasing widths. However, lubrication requirements...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550299
EISBN: 978-1-62708-307-2
... hot pack rolling and bare isothermal rolling. For the near-gamma titanium aluminide alloys, rolling is usually most easily conducted in the alpha-plus-gamma phase field at temperatures approximately 40 to 150 °C (70 to 270 °F) below the alpha transus using reductions per pass of 10 to 15% and rolling...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340117
EISBN: 978-1-62708-427-7
... Abstract This chapter provides an overview of the rolling and finishing processes required to create a sheet, plate, or foil product from a direct chill (DC) cast ingot. The flow paths, equipment, and operations are described with a view to the basic evolution of the microstructure, surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350095
EISBN: 978-1-62708-315-7
... Abstract This chapter provides practical information on surface treatments that work by altering the surface chemistry of metals and alloys. It discusses the use of phosphate and chromate conversion coatings as well as anodizing, steam oxidation, diffusion coatings, and pack cementation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870183
EISBN: 978-1-62708-314-0
... methods are employed to consolidate thermoplastic composites. Flat sheet stock can be preconsolidated for subsequent forming in a platen press. Two press processes are shown in Fig. 6.2 . In the platen press method, precollated ply packs are preheated in an oven and then rapidly shuttled...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560361
EISBN: 978-1-62708-291-4
... region, and a continuous film within the cross-hatched region. After Ref 7 . The structure of the scale layer has an important influence on the ease with which the scale can be removed by pickling ( Ref 8 ). The scale formed on hot-rolled strip, for example, usually has to be removed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350001
EISBN: 978-1-62708-315-7
..., utility, and appliance industries. Other important coating processes for steels include electroplating, electroless plating, thermal spraying, pack cementation aluminizing (for high-temperature oxidation resistance), and cladding (including weld cladding and roll-bonded claddings). Applications...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320003
EISBN: 978-1-62708-332-4
... on four columns with a hinged door at the bottom, propped up and supported by a removable central support. Sand is packed over the bottom hinged door that is accessed through a refractory-lined inspection door that is sealed after the sand packing. A coke bed built by charging from the top supports...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270197
EISBN: 978-1-62708-301-0
... to seizure if it continued. The report recommends the use of electrically conductive grease and proper grounding practices. ball bearings electric motors energy-dispersive X-ray spectrophotometry greases scanning electron microscopy visual examination Summary A grease-packed sealed ball...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320305
EISBN: 978-1-62708-332-4
... examples include stands and frames for heavy-duty forging and extrusion presses and rolling mills. High-alloy steel is used for unique applications that demand extensive abrasion wear resistance combined with impact and corrosion resistance as well as high temperature, high temperature, and oxidation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230295
EISBN: 978-1-62708-298-3
.... Retaining the sheet at too high a final rolling temperature will yield large grains. Skipping the intermediate temperature reheats will produce a duplex microstructure. Curling of the canned pack during rolling is deleterious because the beryllium sheet can crack and will not necessarily heal during...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230267
EISBN: 978-1-62708-298-3
...” for instrument, “SR” for rolled sheet, “PR” for rolled plate, and so on. The structural grades are mostly produced by vacuum hot pressing. The structural grades are also produced by hot isostatic pressing (HIP) and cold isostatic pressing (CIP) processes, but to a much lesser extent. Other designations...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310001
EISBN: 978-1-62708-326-3
...-packed, and body-centered cubic. It then describes the four main divisions of crystal defects, namely point defects, line defects, planar defects, and volume defects. The chapter provides information on grain boundaries of metals, processes involved in atomic diffusion, and key properties of a solid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.9781627083324
EISBN: 978-1-62708-332-4