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Patent Searching and Data


Title:
METHOD OF MANUFACTURING PRESS-FORMED ARTICLE, AND MANUFACTURING LINE
Document Type and Number:
WIPO Patent Application WO/2017/200006
Kind Code:
A1
Abstract:
This method of manufacturing a press-formed article includes a steel sheet heating step, a hot forging step, and a hot stamping step. In the steel sheet heating step, a steel sheet is heated to at least 950°C. In the hot forging step, the heated steel sheet is forged and formed into a steel sheet having different thicknesses. In the hot stamping step, the heated steel sheet having different thicknesses is pressed using a die to form a press-formed article, and the press-formed article that has been formed is cooled in the die. In this way it is possible to manufacture a press-formed article that has high strength and that enables weight reduction.

Inventors:
NAKAZAWA, Yoshiaki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
NOMURA, Naruhiko (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
SUZUKI, Toshiya (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
KUBO, Masahiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
ITO, Yasuhiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
Application Number:
JP2017/018535
Publication Date:
November 23, 2017
Filing Date:
May 17, 2017
Export Citation:
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Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
International Classes:
B21D22/20; B21J5/00; B21J5/02; B21J9/00; B21J9/08; B21J13/10; C22C38/00; C22C38/06; C22C38/58
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (5-17, Dojima 1-chome Kita-ku, Osaka-sh, Osaka 03, 〒5300003, JP)
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