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Title:
MANUFACTURE OF MG ALLOY MADE MEMBER
Document Type and Number:
Japanese Patent JP3281004
Kind Code:
B2
Abstract:

PURPOSE: To provide a method for obtaining the good formability, restraining heating temp, in forging as lower as possible while avoiding lowering of the strength caused by thermal effect in the case of manufacturing a member of a wheel, etc., for bicycle with an Mg alloy, particularly, in the case of applying the forging to a part of this casting stock.
CONSTITUTION: By embedding a chillier 23 at position corresponding to the outer peripheral surface of a rim part in a cavity having the shape of the almost corresponding to the wheel shape as the finish product, at the time of forming the casting stock by using a mold, the above rim part is rapidly cooled and thereafter this rapidly cooled part is heated at 270°C and the forging is executed.


Inventors:
Fujita, Makoto
Higuchi, Takahiro
Application Number:
JP1991000268357
Publication Date:
May 13, 2002
Filing Date:
September 18, 1991
Export Citation:
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Assignee:
MAZDA MOTOR CORP
International Classes:
B21H1/04; B21J5/00; B21J5/12; B22D15/00; B60B3/02; C22F1/00; C22F1/06; (IPC1-7): B21H1/04; B21J5/00; B21J5/12; B22D15/00; B60B3/02; C22F1/06
Attorney, Agent or Firm:
福岡 正明