US 12,344,032 B2
Method for producing a motor vehicle rim made of an aluminum alloy for a wheel of a motor vehicle and corresponding motor vehicle rim
Jaan Mattes Reiling, Sassenberg (DE); Jan Gaugler, Neckarmühlbach (DE); and Marc Hummel, Güglingen (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Appl. No. 17/785,218
Filed by AUDI AG, Ingolstadt (DE)
PCT Filed Dec. 3, 2020, PCT No. PCT/EP2020/084423
§ 371(c)(1), (2) Date Jun. 14, 2022,
PCT Pub. No. WO2021/144063, PCT Pub. Date Jul. 22, 2021.
Claims priority of application No. 102020100688.8 (DE), filed on Jan. 14, 2020.
Prior Publication US 2023/0013726 A1, Jan. 19, 2023
Int. Cl. B60B 21/02 (2006.01); B22D 21/04 (2006.01); C22C 21/04 (2006.01); C22F 1/04 (2006.01); C22F 1/043 (2006.01)
CPC B60B 21/023 (2013.01) [B22D 21/04 (2013.01); B60B 21/026 (2013.01); B60B 21/028 (2013.01); C22C 21/04 (2013.01); C22F 1/043 (2013.01); B60B 2360/104 (2013.01); B60B 2900/113 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for producing a motor vehicle rim made of an aluminum alloy for a wheel of a motor vehicle, comprising: a rim base limited on opposite sides by an outer horn and an inner horn, a hub with a central recess and a hole circle, and a rim center connecting the rim base and the hub to one another, wherein the motor vehicle rim is produced in one piece and continuously in a casting mold by die casting of a casting material, the casting material being the aluminum alloy with constituents 6.5% by weight to 12.0% by weight of silicon, a maximum of 0.80% by weight of manganese, 0.25% by weight to 0.60% by weight of magnesium, 0.08% by weight to 0.50% by weight of zinc, a maximum of 0.30% by weight of zirconium, a maximum of 0.025% by weight of strontium, a maximum of 0.5% by weight of unavoidable impurities, and the remainder being aluminum, and the motor vehicle rim is heat-treated after the die casting, wherein the heat treatment includes a single-stage solution annealing, a subsequent quenching and a subsequent single-stage or multi-stage artificial ageing; wherein the single stage solution annealing takes place over a time period of at most 180 minutes.