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公开(公告)号：US20210308783A1
公开(公告)日：2021-10-07
申请号：US17235598
申请日：2021-04-20
Applicant: ARCONIC TECHNOLOGIES LLC
Inventor： Ali Unal , June M. Epp , Donald J. Spinella , Raymond J. Kilmer , Li M. Ming
Abstract: A method for resistance spot welding aluminum alloys includes reducing the electrical resistance of an outer surface of the stackup in contact with the anode while leaving the faying surfaces at higher resistances, e.g., by grit blasting the anode contacting surface. High resistance electrodes, e.g., with refractory metal content may be used. Stackups of greater than two members may be used. Sheet material may be prepared having the lower and higher resistance surfaces and used with other sheets having higher resistance surfaces. The cathode contacting surface of the stackup may also have a reduced resistance. The method and sheet may be used in assembling vehicle bodies.
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公开(公告)号：US11142815B2
公开(公告)日：2021-10-12
申请号：US14793408
申请日：2015-07-07
Applicant: ARCONIC TECHNOLOGIES LLC
Inventor： Gavin F. Wyatt-Mair , David A. Tomes , William D. Bennon , Raymond J. Kilmer , James C. Riggs , Ali Unal , John M. Newman , Thomas N. Rouns
IPC: C22F1/16 , C22F1/10 , C22F1/08 , C22F1/06 , C22F1/18 , C22F1/057 , C22F1/053 , C22F1/047 , C22F1/043
Abstract: The present invention, in some embodiments, is a method of forming an O temper or T temper product that includes obtaining a coil of a non-ferrous alloy strip as feedstock; uncoiling the coil of the feedstock; heating the feedstock to a temperature between a recrystallization temperature of the non-ferrous alloy and 10 degrees Fahrenheit below a solidus temperature of the non-ferrous alloy; and quenching the feedstock to form a heat-treated product having am O temper or T temper. The non-ferrous alloy strip used in the method excludes aluminum alloys having 0.4 weight percent silicon, less than 0.2 weight percent iron, 0.35 to 0.40 weight percent copper, 0.9 weight percent manganese, and 1 weight percent magnesium.
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