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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 (6-1 MARUNOUCHI 2-CHOME, CHIYODA-K, Tokyo 71, 〒1008071, JP)
小林 好史 (〒71 東京都千代田区丸の内二丁目6番1号 新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
KAWANO, Kazuyuki (6-1 MARUNOUCHI 2-CHOME, CHIYODA-K, Tokyo 71, 〒1008071, JP)
河野 一之 (〒71 東京都千代田区丸の内二丁目6番1号 新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
ITOH, Yasunori (6-1 MARUNOUCHI 2-CHOM, CHIYODA-KU Tokyo 71, 〒1008071, JP)
Application Number:
JP2010/063291
Publication Date:
February 10, 2011
Filing Date:
August 05, 2010
Export Citation:
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Assignee:
NIPPON STEEL CORPORATION (6-1 MARUNOUCHI 2-CHOME, CHIYODA-KU Tokyo, 71, 〒1008071, JP)
新日本製鐵株式会社 (〒71 東京都千代田区丸の内二丁目6番1号 Tokyo, 〒1008071, JP)
KOBAYASHI, Yoshifumi (6-1 MARUNOUCHI 2-CHOME, CHIYODA-K, Tokyo 71, 〒1008071, JP)
小林 好史 (〒71 東京都千代田区丸の内二丁目6番1号 新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
KAWANO, Kazuyuki (6-1 MARUNOUCHI 2-CHOME, CHIYODA-K, Tokyo 71, 〒1008071, JP)
河野 一之 (〒71 東京都千代田区丸の内二丁目6番1号 新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
International Classes:
C22C38/00; B21D22/20; B21D24/00; C21D1/34; C21D1/70; C21D9/00; C23C26/00
Foreign References:
JP2008240047A2008-10-09
JP2004218016A2004-08-05
JP2004315927A2004-11-11
JPH10202326A1998-08-04
Attorney, Agent or Firm:
KOKUBUN, Takayoshi (5th Floor, NBF Ikebukuro City Building 17-8, Higashi-Ikebukuro 1-chome, Toshima-k, Tokyo 13, 〒1700013, JP)
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