公开(公告)号：US5789089A

公开(公告)日：1998-08-04

申请号：US649363

申请日：1996-05-17

申请人： Jun Maki ,  Takayuki Ohmori ,  Masaaki Enjuji ,  Haruhiko Eguchi ,  Masaaki Yamamoto ,  Yu Ando ,  Yusho Oyama ,  Nobuyoshi Okada

发明人： Jun Maki ,  Takayuki Ohmori ,  Masaaki Enjuji ,  Haruhiko Eguchi ,  Masaaki Yamamoto ,  Yu Ando ,  Yusho Oyama ,  Nobuyoshi Okada

IPC分类号： C23C2/12 ,  B21D39/00

CPC分类号： C23C2/12 ,  Y10S428/939 ,  Y10T428/12549 ,  Y10T428/12569 ,  Y10T428/12611 ,  Y10T428/12757 ,  Y10T428/12764 ,  Y10T428/12958 ,  Y10T428/12972 ,  Y10T428/12979

摘要： A hot-dipped aluminum coated steel sheet including, on the surface thereof, a coating layer consisting of 2 to 15 wt % of Si, not greater than 1.2 wt % of Fe, 0.005 to 0.6 wt % of Mn, 0.002 to 0.05 wt % of Cr and the balance of Al and unavoidable impurities, and an alloy layer disposed between the coating layer and the steel sheet, having a thickness of not greater than 7 .mu.m and having a mean composition consisting of 20 to 50 wt % of Fe, 3 to 20 wt % of Si, 0.1 to 10 wt % of Mn, 0.05 to 1.0 wt % of Cr and the balance substantially consisting of Al. This steel sheet can be produced by conducting coating in a coating bath consisting of 3 to 15 wt % of Si, 0.5 to 3.5 wt % of Fe, 0.05 to 1.5 wt % of Mn, 0.01 to 0.2 wt % of Cr and the balance substantially consisting of Al, or by adjusting the sum of the concentrations of Zn and Sn in the impurities in the coating layer to not greater than 1 wt %.

摘要翻译： 一种热浸镀铝钢板，其表面包括由2〜15重量％的Si，不大于1.2重量％的Fe，0.005〜0.6重量％的Mn，0.002〜0.05重量％ 的Cr和余量的Al和不可避免的杂质，以及设置在涂层和钢板之间的合金层，其厚度不大于7μm，平均组成由20至50重量％的Fe， 3〜20重量％的Si，0.1〜10重量％的Mn，0.05〜1.0重量％的Cr，余量实质上由Al组成。 该钢板可以通过在由3〜15重量％的Si，0.5〜3.5重量％的Fe，0.05〜1.5重量％的Mn，0.01〜0.2重量％的Cr和其余基本上组成的涂布浴中进行涂布来制造 由Al组成，或通过将涂层中的杂质中的Zn和Sn的浓度的总和调整为不大于1重量％。