Title:
半固体成形方法
Document Type and Number:
Japanese Patent JP2005515897
Kind Code:
A
Abstract:
A metal alloy is heated to a molten state, and a grain refiner may be added. The refined molten alloy is poured into a large diameter shot sleeve of a vertical die cast press and on top of a shot piston. The shot sleeve is transferred to an injection station while the molten alloy cools to a semi-solid slurry with approximately fifty percent solids and a globular, generally non-dendritic microstructure. A center portion of the slurry is injected upwardly by the piston through a gate opening into a die cavity while an outer more solid portion of the slurry is entrapped in an annular recess. After the slurry solidifies, the shot piston retracts, and the shot sleeve is transferred to a position where the residual biscuit is removed. A second shot sleeve filled with the molten alloy is transferred to the metal transfer station, and the process is repeated.
Inventors:
Come Richard Jay
Joe Stud John El
Joe Stud John El
Application Number:
JP2003563751A
Publication Date:
June 02, 2005
Filing Date:
November 22, 2002
Export Citation:
Assignee:
THC Presses Incorporated
International Classes:
B22D21/04; B22D17/00; B22D17/12; B22D17/20; B22D27/20; (IPC1-7): B22D17/00; B22D17/20; B22D21/04; B22D27/20
Attorney, Agent or Firm:
Mitsufumi Esaki
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith