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Title:
METHOD FOR WORK-FORMING CUP BODY IN METAL SHEET MATERIAL
Document Type and Number:
Japanese Patent JP2008264877
Kind Code:
A
Abstract:

To provide a method for work-forming a cup body in a metal sheet material.

Regarding the method for work-forming a cup body in a metal sheet material, a metal sheet material of a nickel-iron-molybdenum (Ni-Fe-Mo) alloy is subjected to working. At first, the first internal provision part is packed with hydrogen (H2), and the inside of the first internal provision part is heated at a set temperature higher than room temperature. The metal sheet material is placed at the first internal provision part, and the metal sheet material is calmly let alone for a first set time. The second internal provision part is packed with hydrogen, and the temperature of the second internal provision part is held to room temperature, and further, the metal sheet material is softened. The metal sheet material is discharged from the second internal provision part, and the metal sheet material is subjected to a working operation, so as to form a cup body at the metal sheet material.


Inventors:
TSAI SHIH-MING
YODA ICHIRO
YEN WEI-KAI
TAKAHASHI KUNIO
Application Number:
JP2008106391A
Publication Date:
November 06, 2008
Filing Date:
April 16, 2008
Export Citation:
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Assignee:
TOSPOM CORP
International Classes:
B21D22/20; B21D51/18; H01J9/02
Domestic Patent References:
JP2001222973A2001-08-17
JP2006257528A2006-09-28
Attorney, Agent or Firm:
Matsuji Takemoto
Hideo Sugiyama
Koichi Yuda
Uozumi Takahiro
Naohiko Teshima
Mitsuo Shiraishi



 
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