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Title:
METHOD OF PRESS-FORMING PRESS-FORMED COMPONENT EXCELLENT IN SHAPE FREEZING PROPERTY
Document Type and Number:
Japanese Patent JP2009262168
Kind Code:
A
Abstract:

To provide a method of press-forming a press-formed component excellent in a shape freezing property by which the press-formed component excellent in dimensional accuracy are stably mass-produced by appropriately suppressing occurrence of springback after press forming without using a complicated process when manufacturing the press-formed component having a U-shaped cross-sectional shape or a V-shaped cross-sectional shape.

The cross-sectional shape of the joining part 12 of the press-formed component 10 comprises two curves and one straight line and is formed from a curve part 12a provided with a radius R of curvature between the starting point M of the connecting part 12 and a first intermediate point A, a straight line part 12b between the first intermediate point A and a second intermediate point B and a curve part 12a provided with the radius R of curvature between the second intermediate point B and the finish point N of the joining part 12.


Inventors:
URABE MASAKI
SAITO TAKANOBU
KANO HIROTAKA
Application Number:
JP2008111930A
Publication Date:
November 12, 2009
Filing Date:
April 23, 2008
Export Citation:
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Assignee:
JFE STEEL CORP
International Classes:
B21D22/26
Domestic Patent References:
JP2006289480A2006-10-26
JPS609521A1985-01-18
JPS6264423A1987-03-23
Attorney, Agent or Firm:
Kenichiro Ochiai
Kazuhiro Mori