VERTICAL DIE CASTING PRESS AND METHOD OF PRODUCING DIE CAST METAL PARTS

Title:

VERTICAL DIE CASTING PRESS AND METHOD OF PRODUCING DIE CAST METAL PARTS

Document Type and Number:

WIPO Patent Application WO2004037526

Kind Code:

A3

Abstract:

A fiber reinforced porous preform (58) is positioned within a die cavity (55) defined by upper and lower die members (48, 52), and the lower die member (52) defines at least one gate opening (62) in the center portion of a water cooled shot sleeve (15) which receives a vertically moveable shot piston (18). The area of the gate opening is small relative to the area of the shot sleeve, and the lower die member defines an annular recess (65) above the inner surface of the shot sleeve for entrapping a shell of pre-solidified metal. Air vent slots (68) extend outwardly between the shot sleeve and lower die member and are closed by the shell of pre-solidified metal. In one embodiment, the shot sleeve (15') and shot piston (18') are non-circular or oval in cross-section; and the lower die member (52') has a plurality of longitudinally space gate openings (62').

Inventors:

KAMM RICHARD J
LOUGHMAN MICHAEL J
SWARTS RONALD P

Application Number:

PCT/US2003/032180

Publication Date:

July 29, 2004

Filing Date:

October 10, 2003

Export Citation:

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Assignee:

THT PRESSES INC (US)

International Classes:

B22D17/12; B22D17/20; B22D17/22; B22D17/24; B22D19/14; (IPC1-7): B22D17/00; B22D19/00; B22D37/00

Foreign References:

US6467528B1	2002-10-22
US6453980B1	2002-09-24
US5954116A	1999-09-21
US5660223A	1997-08-26
US4871010A	1989-10-03
US4799534A	1989-01-24

Other References: