US 11,739,406 B2
Aluminum sheet material for separator of fuel cell and manufacturing method therefor
Tae Gyu Lee, Seoul (KR); and Woong Pyo Hong, Hwaseong-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA MOTORS CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Jul. 15, 2021, as Appl. No. 17/376,673.
Claims priority of application No. 10-2020-0177693 (KR), filed on Dec. 17, 2020.
Prior Publication US 2022/0195572 A1, Jun. 23, 2022
Int. Cl. C22F 1/047 (2006.01); C22C 21/06 (2006.01); H01M 8/0208 (2016.01)
CPC C22F 1/047 (2013.01) [C22C 21/06 (2013.01); H01M 8/0208 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for manufacturing an aluminum sheet material for a separator of a fuel cell, the method comprising steps of:
casting a molten metal, which contains 9-10 wt % of Magnesium (Mg), based on a total wt % of the molten material, a balance of Aluminum (Al) and inevitable impurities, to prepare a cast material having a rod shape;
cold rolling the cast material into a rolled plate;
stacking multiple copies of the rolled plate to form a stacked rolled plate product;
cold-pack rolling the stacked rolled plate product to prepare a sheet material; and
thermally treating the sheet material.