- 专利标题: Hot-dip galvanized steel sheet having excellent surface appearance and low-temperature bonding brittleness
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申请号: US17297266申请日: 2019-11-28
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公开(公告)号: US11801665B2公开(公告)日: 2023-10-31
- 发明人: Hyeon-Seok Hwang
- 申请人: POSCO
- 申请人地址: KR Pohang-si
- 专利权人: POSCO CO., LTD
- 当前专利权人: POSCO CO., LTD
- 当前专利权人地址: KR Pohang-si
- 代理机构: CANTOR COLBURN LLP
- 优先权: KR 20180151371 2018.11.29
- 国际申请: PCT/KR2019/016526 2019.11.28
- 国际公布: WO2020/111798A 2020.06.04
- 进入国家日期: 2021-05-26
- 主分类号: B32B15/01
- IPC分类号: B32B15/01 ; C23C2/02 ; C23C2/06 ; C23C2/40 ; C21D9/46 ; C21D1/26 ; C21D1/74 ; C23C2/16 ; C23C2/18 ; C23C2/26 ; C23C2/20 ; B23H1/00 ; B21B27/00 ; B21B27/02 ; B32B3/26 ; B32B3/30 ; B32B7/02 ; C21D7/04 ; C23C30/00 ; B21B1/22 ; B21B1/24 ; B32B15/04 ; B32B15/18 ; B24C1/00 ; B23K26/362 ; B24C1/08 ; B23K26/36 ; B23K26/352 ; C23F4/00
摘要:
Provided is a hot-dip galvanized steel sheet to be used for home appliances, vehicles, and the like, and having excellent surface appearance and low-temperature bonding brittleness. The hot-dip galvanized steel sheet includes: a base steel sheet; and a hot-dip galvanized layer formed on the base steel sheet. A surface of the base steel sheet has a centerline average roughness (Ra) of 0.3 or more, a roughness skewness (Rsk) of −1 or less, and a roughness kurtosis (Rku) of 6 or more.
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