Title:
プレス加工された製品を製造する方法およびその方法から準備されたプレス加工された製品
Document Type and Number:
Japanese Patent JP6588047
Kind Code:
B2
Abstract:
The invention relates to a process for making a hot stamped coated steel sheet product, comprising the steps of pre-coating a steel strip or sheet with aluminum—or aluminum alloy, cutting said pre-coated steel strip or sheet to obtain a pre-coated steel blank, heating the blank in a furnace preheated to a temperature and during a time defined by diagram according to thickness, at a heating rate Vc between 20 and 700° C. comprised between 4 and 12° C./s and at a heating rate Vc′ between 500 and 700° C. comprised between 1.5 and 6° C./s, to obtain a heated blank; then transferring said heated blank to a die, hot stamping the heated blank in the die obtain a hot stamped steel sheet product, cooling at a mean rate Vr between the exit of the heated blank from the furnace, down to 400° C., of at least 30° C./s.
Inventors:
Pascal drier
Dominique spener
Ronald Kefastane
Dominique spener
Ronald Kefastane
Application Number:
JP2017040554A
Publication Date:
October 09, 2019
Filing Date:
March 03, 2017
Export Citation:
Assignee:
ArcelorMittal France
International Classes:
C22C38/00; B21D22/20; B21D24/00; B21D37/14; C21D1/18; C21D9/00; C22C38/60; C23C2/12
Domestic Patent References:
| JP6146941B2 | ||||
| JP2007291441A | ||||
| JP2007314874A | ||||
| JP2004043887A | ||||
| JP2003183802A | ||||
| JP2006051543A |
Other References:
末広正芳、外4名,ホットプレス用アルミニウムめっき鋼板の諸特性,新日鉄技報,日本,新日本製鐵株式会社,2003年,vol.378,p.15-20
Attorney, Agent or Firm:
Kawaguchi International Patent Office