US 11,773,476 B2
Method for producing a motor vehicle component from a 6000-series aluminum alloy
Jochem Grewe, Salzkotten (DE); and Feng Jiao, Paderborn (DE)
Assigned to BENTELER AUTOMOBILTECHNIK GMBH, Paderborn (DE)
Filed by BENTELER AUTOMOBILTECHNIK GMBH, Paderborn (DE)
Filed on Jan. 30, 2020, as Appl. No. 16/776,884.
Claims priority of application No. 10 2019 102 506.0 (DE), filed on Jan. 31, 2019.
Prior Publication US 2020/0248292 A1, Aug. 6, 2020
Int. Cl. C22F 1/05 (2006.01); B21D 22/02 (2006.01); C21D 9/46 (2006.01); C22C 21/08 (2006.01); C22C 21/14 (2006.01); C22C 21/16 (2006.01); C22C 21/02 (2006.01); B21D 53/88 (2006.01); B21D 53/74 (2006.01)
CPC C22F 1/05 (2013.01) [B21D 22/02 (2013.01); C21D 9/46 (2013.01); C22C 21/02 (2013.01); C22C 21/08 (2013.01); C22C 21/14 (2013.01); C22C 21/16 (2013.01); B21D 53/74 (2013.01); B21D 53/88 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method of producing a motor vehicle component from a 6000-series aluminum alloy, the method comprising:
rapid heating of a blank comprising 6000-series aluminum alloy, using contact plates, to a temperature between 450° C. and 600° C. in a time of less than 20 seconds,
ending the rapid heating in response to obtaining a grain size between 20 and 50 μm,
quenching the blank to a temperature of less than or equal to 100° C., in a time of less than 20 seconds to form a tempered blank, the rapid heating and the quenching of the blank is performed in a total time of less than 50 seconds,
applying a lubricant at 20° C. to 100° C. to the tempered blank,
forming the tempered blank in a forming tool, the time between beginning of the rapid heating and beginning of the forming is less than 50 seconds, and
stabilizing or aging the tempered blank, wherein the 6000-series aluminum alloy comprises the following alloy elements, expressed in weight-percent:
 
 
 silicon (Si) 0.60 to 1.00
 
 magnesium (Mg) 0.65 to 0.95
 
 copper (Cu) 0.25 to 0.90
 
remainder aluminum and smelting-related contaminants.