Title:
WARM PRESSING METHOD FOR HIGH TENSILE STRENGTH STEEL SHEET
Document Type and Number:
Japanese Patent JP2001314923
Kind Code:
A
Abstract:
To provide a warm pressing method for a high tensile strength steel sheet for continuously light speed press forming the high tensile strength steel sheet without bring about surface defects or a drop in production efficiency.
The high tensile strength steel sheet 3 is heated at the temperature of 400-1200°C with a heating speed of 100°C/sec or higher by a heating means such as a lie electrode 7 amount processes in route to the press forming so as to perform the press forming.
Inventors:
NAKAKUBO ATSUSHI
KATAYAMA TOMOHISA
NISHIZAWA KOICHI
HONDA TAKESHI
KAWAGUCHI HIROSHI
UENO KOICHI
OONISHI MICHINARI
KATAYAMA TOMOHISA
NISHIZAWA KOICHI
HONDA TAKESHI
KAWAGUCHI HIROSHI
UENO KOICHI
OONISHI MICHINARI
Application Number:
JP2000133398A
Publication Date:
November 13, 2001
Filing Date:
May 02, 2000
Export Citation:
Assignee:
NIPPON STEEL CORP
TOYOTA MOTOR CORP
TOYOTA MOTOR CORP
International Classes:
B21D22/20; (IPC1-7): B21D22/20
Attorney, Agent or Firm:
Tatsuo Watanuki (2 outside)