Title:
塑性加工部材の製造方法
Document Type and Number:
Japanese Patent JP2004519333
Kind Code:
A
Abstract:
The method for manufacturing a plastic worked article includes the steps of shaping an article for plastic working by a semisolid molding in which molten metal including both a solid phase and a liquid phase is introduced into a die; performing a pre-plastic working heat treatment on the article for plastic working for causing blisters by expanding gas cavities included in the article for plastic working; and forming a plastic worked article by plastic working the article for plastic working after the pre-plastic working heat treatment. The plastic working of the article for plastic working is performed in such a manner that a tensile stress applied direction at a tensile stress applied portion to which tensile stress is principally applied in actual use of the plastic worked article substantially accords with a plastic flow direction at a portion of the article for plastic working corresponding to the tensile stress applied portion.
Inventors:
Kazuo Sakamoto
Yasuo Uozaki
Nobuo Sakate
Yasuo Uozaki
Nobuo Sakate
Application Number:
JP2002577172A
Publication Date:
July 02, 2004
Filing Date:
March 18, 2002
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
B21J5/00; B21J5/02; B21K1/28; B21K1/32; B22D17/00; C22C1/00; C22C1/02; C22F1/00; C22F1/06; (IPC1-7): B21J5/00; B21K1/32; B22D17/00; C22C1/02; C22F1/06
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Koyama
Hiroshi Koyama