METHOD FOR HOT-DIP COATING A FLAT STEEL PRODUCT CONTAINING 2-35 WT% MN AND FLAT STEEL PRODUCT
摘要
A method by which a flat steel product containing 2-35 wt. % of Mn can be provided with a coating of Zn which adheres well by annealing at an annealing temperature Ta of 600-1100° C. for an annealing time of 10-240 s under an annealing atmosphere which has a reducing effect on the FeO present on the flat steel product and an oxidising effect on the Mn contained in the steel substrate thereby forming a layer of Mn mixed oxide which covers the flat steel product at least in sections and then cooling the flat steel product to a temperature for bath entry and conveying it through a bath of molten Zn saturated within iron at a temperature of 420-520° C., within a dip time of 0.1-10 s.
申请公布号
EP2432910(A1)
申请公布日期
2012.03.28
申请号
EP20100717595
申请日期
2010.04.22
申请人
THYSSENKRUPP STEEL EUROPE AG
发明人
MEURER, MANFRED;NORDEN, MARTIN;WARNECKE, WILHELM;BLUMENAU, MARC;DAHLEM, MATTHIAS;SCHULZ, JENNIFER;PETERS, KLAUS, JOSEF