Title:
超塑性成形用ブランク
Document Type and Number:
Japanese Patent JP2013545618
Kind Code:
A
Abstract:
A sheet metal blank for superplastic forming has, on one side thereof, a first surface region having a coating of a lubricant material of a substantially uniform thickness. The blank also has a second surface region that is one of i) substantially devoid of a coating of the lubricant material and ii) coated with a coating of the lubricant material having a thickness that decreases progressively to a minimum thickness less than the substantially uniform thickness. A third surface region is disposed between the first surface region and the second surface region, the third surface region having a coating of the lubricant material of a thickness that decreases progressively in a direction from the first surface region to the second surface region. In particular, the second surface region is a region of the sheet metal blank that contacts a sharp character line of a forming die during superplastic forming.
Inventors:
Shulkin Boris
Cocosha William A
Amtman Maximilian
Cocosha William A
Amtman Maximilian
Application Number:
JP2013543474A
Publication Date:
December 26, 2013
Filing Date:
December 16, 2011
Export Citation:
Assignee:
Magna International Incorporated
International Classes:
B21D26/055; B21D37/18
Domestic Patent References:
| JP2004337935A | 2004-12-02 | |||
| JPS61139773U | 1986-08-29 | |||
| JPS63133377U | 1988-08-31 | |||
| JP2008114287A | 2008-05-22 | |||
| JP2004337935A | 2004-12-02 | |||
| JPS61139773U | 1986-08-29 | |||
| JPS63133377U | 1988-08-31 | |||
| JP2008114287A | 2008-05-22 |
Foreign References:
| US4138284A | 1979-02-06 | |||
| US4138284A | 1979-02-06 |
Attorney, Agent or Firm:
Koichi Tsujii
Sadao Kumakura
Disciple Maru Ken
Ino Sato
Mitsuru Matsushita
Ichiro Kurasawa
Sadao Kumakura
Disciple Maru Ken
Ino Sato
Mitsuru Matsushita
Ichiro Kurasawa