Title:
PRESS-FORMING TAILORED BLANK MATERIAL EXCELLENT IN FORMABILITY AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2002/036281
Kind Code:
A1
Abstract:
A different-thickness, different-material tailored blank material excellent in formability, capable of avoiding a rupture on a low-strength (or low plate-thickness) material side caused by strength rate controlling when press-forming a different-thickness, different-material tailored blank material. A press-forming tailored blank material excellent in formability which is a tailored blank material formed by continuously welding at least two kinks of blank plates having different tensile strengths, characterized in that a ratio (n¿1?/n¿2?) between work hardening characteristic values (n¿1?), (n¿2?) of a high-tensile-strength-side material and low-tensile-strength-side material is at least 0.75 and up to 3.8.
Inventors:
HASHIMOTO KOJI (JP)
KURIYAMA YUKIHISA (JP)
YOSHIDA TORU (JP)
MIYAZAKI YASUNOBU (JP)
KURIYAMA YUKIHISA (JP)
YOSHIDA TORU (JP)
MIYAZAKI YASUNOBU (JP)
Application Number:
PCT/JP2000/007314
Publication Date:
May 10, 2002
Filing Date:
October 20, 2000
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
HASHIMOTO KOJI (JP)
KURIYAMA YUKIHISA (JP)
YOSHIDA TORU (JP)
MIYAZAKI YASUNOBU (JP)
HASHIMOTO KOJI (JP)
KURIYAMA YUKIHISA (JP)
YOSHIDA TORU (JP)
MIYAZAKI YASUNOBU (JP)
International Classes:
B23K9/14; B21D22/00; B21D22/20; B23K9/167; B23K15/00; B23K26/21; C22C38/00; C22F1/00; C22F1/04; B23K103/04; B23K103/10; B23K103/20; (IPC1-7): B21D22/20; B21D22/02
Foreign References:
| JPH11104749A | 1999-04-20 | |||
| JP2000233288A | 2000-08-29 | |||
| JPS48125A | ||||
| JPH0726346A | 1995-01-27 | |||
| JP2000015353A | 2000-01-18 |
Attorney, Agent or Firm:
Kishida, Masayuki (6-2 Marunouchi 2-chom, Chiyoda-ku Tokyo, JP)
Download PDF: