METAL PLATE FOR RADIATION HEATING, PROCESS FOR PRODUCING SAME, AND PROCESSED METAL HAVING PORTION WITH DIFFERENT STRENGTH AND PROCESS FOR PRODUCING SAME

Title:

METAL PLATE FOR RADIATION HEATING, PROCESS FOR PRODUCING SAME, AND PROCESSED METAL HAVING PORTION WITH DIFFERENT STRENGTH AND PROCESS FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2011/016518

Kind Code:

A1

Abstract:

A region is formed in some of a surface of a metal plate to be subjected to radiation heating with near infrared rays, the region having a lower reflectance of radiation rays than the original metal plate surface. As a treatment for reducing the reflectance, use can be made of coating or thermal spraying in a blackish color, plating in a blackish color, a treatment for enhancing the surface roughness of the metal plate, blasting, etching, blackening, a treatment for changing the material of the surface of the metal plate, or the like. The metal plate thus treated is heated by radiation to obtain a heated metal plate partly having a different temperature, and this metal plate is subjected to thermal processing accompanied by cooling, for example, hot stamping.

Inventors:

KOBAYASHI YOSHIFUMI (JP)
KAWANO KAZUYUKI (JP)
ITOH YASUNORI (JP)
SUZUKI SHINICHI (JP)
YAMANAKA SHINTARO (JP)

Application Number:

PCT/JP2010/063291

Publication Date:

February 10, 2011

Filing Date:

August 05, 2010

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
KOBAYASHI YOSHIFUMI (JP)
KAWANO KAZUYUKI (JP)
ITOH YASUNORI (JP)
SUZUKI SHINICHI (JP)
YAMANAKA SHINTARO (JP)

International Classes:

C22C38/00; B21D22/20; B21D24/00; C21D1/34; C21D1/70; C21D9/00; C23C26/00

Foreign References:

JP2008240047A	2008-10-09
JP2004218016A	2004-08-05
JP2004315927A	2004-11-11
JPH10202326A	1998-08-04

Other References: