Title:
高張力鋼製のフラット鋼生成物の溶融浸漬コーティング方法
Document Type and Number:
Japanese Patent JP5189587
Kind Code:
B2
Abstract:
A method for coating a flat steel product manufactured from a high strength steel with a metallic coating, wherein the flat steel product is initially subjected to a heat treatment, in order then, in the heated state, to be hot-dip galvanized with the metallic coating in a melting bath containing overall at least 85% zinc and/or aluminum. The heat treatment includes heating the steel product in a reducing atmosphere, followed by converting a surface of the flat product to an iron oxide layer by a heat treatment lasting 1 to 10 secs in an oxidizing atmosphere, followed by annealing in a reducing atmosphere over a period of time which is longer than the duration of the formation of the iron oxide layer such that the iron oxide layer is reduced at least on its surface to pure iron, followed by cooling the product to a melting bath temperature.
Inventors:
Roney, Ronnie
Moyler, manfred
Varnecke, Wilhelm
Zeitzinger, Sabine
Notacker, Gelno
Ullman, Michael
Schaffrad, Norbert
Moyler, manfred
Varnecke, Wilhelm
Zeitzinger, Sabine
Notacker, Gelno
Ullman, Michael
Schaffrad, Norbert
Application Number:
JP2009506924A
Publication Date:
April 24, 2013
Filing Date:
April 26, 2006
Export Citation:
Assignee:
ThyssenKrupp Steel AG
International Classes:
C23C2/02; C21D9/46; C22C18/04; C22C21/02; C22C21/10; C23C2/28
Domestic Patent References:
| JP2006176806A | ||||
| JP9111432A | ||||
| JP6212384A | ||||
| JP2285057A | ||||
| JP4048062A | ||||
| JP7097670A | ||||
| JP5247614A | ||||
| JP4254531A |
Attorney, Agent or Firm:
Kenichi Morita
Kenjiro Yamaguchi
Kenjiro Yamaguchi