US 12,246,512 B2
Aluminum coated blank and manufacturing method thereof
Chang Yong Lee, Incheon (KR); Joo Sik Hyun, Incheon (KR); Sang Hyeon Park, Incheon (KR); and Jeong Seok Kim, Incheon (KR)
Assigned to Hyundai Steel Company, Incheon (KR)
Filed by Hyundai Steel Company, Incheon (KR)
Filed on Dec. 8, 2022, as Appl. No. 18/077,459.
Application 18/077,459 is a continuation of application No. PCT/KR2022/001407, filed on Jan. 26, 2022.
Claims priority of application No. 10-2021-0085771 (KR), filed on Jun. 30, 2021.
Prior Publication US 2023/0104841 A1, Apr. 6, 2023
Int. Cl. B32B 15/01 (2006.01); B23K 26/322 (2014.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); B23K 101/18 (2006.01); B23K 101/34 (2006.01); B23K 103/04 (2006.01); B23K 103/10 (2006.01)
CPC B32B 15/012 (2013.01) [B23K 26/322 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); B23K 2101/185 (2018.08); B23K 2101/34 (2018.08); B23K 2103/04 (2018.08); B23K 2103/10 (2018.08)] 6 Claims
OG exemplary drawing
 
1. An aluminum-based plated blank comprising:
a first plated steel plate;
a second plated steel plate connected to the first plated steel plate; and
a joint connecting the first plated steel plate and the second plated steel plate at a boundary between the first plated steel plate and the second plated steel plate,
wherein each of the first plated steel plate and the second plated steel plate comprises a base steel and a plated layer formed with an adhesion amount of 20 to 100 g/m2 on at least one surface of the base steel and comprising aluminum (Al),
wherein the joint comprises aluminum (Al), and an average content of aluminum (Al) in the joint is 0.5 wt % or greater and 1.5 wt % or less,
wherein the joint comprises a first lateral portion, a central portion, and a second lateral portion, each of which comprises three portions sequentially arranged in a direction crossing a width direction of the joint, totaling nine portions, and
wherein a standard deviation of an aluminum (Al) content of the joint, when determined from the nine points, is 0 wt % or greater and 0.25 wt % or less.