发明名称 |
LOW PRESSURE CASTING PROCESS AND APPARATUS |
摘要 |
Molten metal is delivered from a master furnace (12) to the holding chamber of a low pressure casting machine (14) by a launder assembly (16) having a unitary, quickly replaceable, valve assembly (18). The valve (18) has a plug (130) mounted for rotation in a valve body (96). In a modification, the valve has a port (214) centered in a valve plate and a movable plug of aluminum titanate (212). In operation, the valve (18) is opened to permit the molten metal within the master furnace (12) and the holding vessel (40) to seek a substantially uniform level and closed when the low pressure casting is initiated. While the valve (18) is closed, a pressurizing gas is introduced into the holding vessel (42) so that molten metal will rise up a riser tube (58) into a mold.
|
申请公布号 |
CA2166209(A1) |
申请公布日期 |
1995.01.12 |
申请号 |
CA19942166209 |
申请日期 |
1994.07.01 |
申请人 |
FRANK W. SCHAEFER, INC. |
发明人 |
SCHAEFER, RICHARD L.;SCHAEFER, CARL W. D.;WILLIAMSON, JAMES M.;MILLER, NORMAN L. |
分类号 |
B22D18/04;(IPC1-7):B22D18/00;B22D27/13;B22D41/00 |
主分类号 |
B22D18/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|