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Title:
HOLLOW MEMBER, AND MANUFACTURING DEVICE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2010/082584
Kind Code:
A1
Abstract:
Disclosed are a lightweight hollow member, which is highly strong, at e.g., 780 MPa or greater, has complex shapes applicable to automotive components, is highly rigid, and has excellent impact characteristics, and a manufacturing device and manufacturing method, which can form the hollow member by a simple process and have a relatively small and inexpensive molding machine. Disclosed is a manufacturing device (10) that is equipped with a feed unit (11) for feeding a hollow steel material (20) with a closed horizontal cross-sectional shape to the lengthwise direction thereof, a support unit (12), which supports this fed material (20) at a first position (A), a heating unit (13), which heats the material (20) at a second position (B), a horizontal cross-sectional shape change unit (14), which performs work to change the horizontal cross-sectional shape of the material (20) at a third position (C), and a cooling unit (15), which cools the material (20) at a fourth position (D).

Inventors:
TOMIZAWA Atsushi (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
富澤 淳 (〒41 大阪府大阪市中央区北浜4丁目5番33号 住友金属工業株式会社内 Osaka, 〒5410041, JP)
Application Number:
JP2010/050277
Publication Date:
July 22, 2010
Filing Date:
January 13, 2010
Export Citation:
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Assignee:
SUMITOMO METAL INDUSTRIES, LTD. (5-33, Kitahama 4-chome Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
住友金属工業株式会社 (〒41 大阪府大阪市中央区北浜4丁目5番33号 Osaka, 〒5410041, JP)
TOMIZAWA Atsushi (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
International Classes:
B21C37/15; B21B17/14; B21D7/08
Domestic Patent References:
2006-09-08
Foreign References:
JP3871416B22007-01-24
JP2008266694A2008-11-06
JP3195083B22001-08-06
Other References:
JIDOSHA GIJUTSU JOURNAL OF SOCIETY OF AUTOMOTIVE ENGINEERS OF JAPAN vol. 57, no. 6, 2003, pages 23 - 28
Attorney, Agent or Firm:
HIROSE Shoichi (Tozan Building, 4-2 Nihonbashi Honcho 4-chome, Chuo-k, Tokyo 23, 〒1030023, JP)
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