Title:
A roll forming process and a roll forming apparatus
Document Type and Number:
Japanese Patent JP6023563
Kind Code:
B2
Abstract:
A roll forming method includes: performing a cross-section forming process to causing a steel strip, to pass through a forming roll die so that a cross-sectional shape of the steel strip is formed into a predetermined cross-sectional shape; performing a heating process of heating the steel strip to a first temperature that is equal to or higher than an austenitizing temperature; performing a preliminary cooling process of cooling the steel strip to a second temperature lower than the austenitizing temperature and equal to or higher than a martensite transformation point; performing a cross-section correcting process of causing the steel strip to pass through a correction roll die and correcting the cross-sectional shape of the steel strip, and performing a main cooling process of cooling the steel strip having passed through the correction roll die to a third temperature lower than the martensite transformation point.
Inventors:
Takumi
Koji Yoshida
Masafumi Saeki
Hashiguchi Masahiro
Koji Yoshida
Masafumi Saeki
Hashiguchi Masahiro
Application Number:
JP2012252900A
Publication Date:
November 09, 2016
Filing Date:
November 19, 2012
Export Citation:
Assignee:
Aisin Seiki Co., Ltd.
Hisada Co., Ltd.
Hisada Co., Ltd.
International Classes:
B21D5/08; B21D3/00; B21D3/05
Domestic Patent References:
| JP7144223A | ||||
| JP2007275937A | ||||
| JP2010082584A1 |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office
Kenai Kanai
Kenai Kanai