发明名称 |
Method and device for terminating the casting process after non-gravity casting of moulds, especially green-sand moulds, particularly with easily oxidable metals or metal alloys |
摘要 |
After casting a mould (1) through a bottom inlet (2) with liquid metal (4) under pressure through a mouthpiece (5) of a casting device, the inlet (2) is closed by a closing element (8) being pressed by the mouthpiece (5) into sealing abutment against a seat in the mould (1). Subsequently, an inert gas is introduced into a passage (6) in the casting mouthpiece from a source (9) through a pressure reducing valve (11), a shut-off valve (12) which is capable of being selectively opened, a gas chamber (13) and a bore (14) in the mouthpiece (5). The inert gas is introduced such that the casting device can suck the liquid metal (4) from the closing element (8) a distance backwards in the mouthpiece (5). The effect of this is that oxidation of the liquid metal in the mouthpiece (5) or in the nozzle (7) is avoided, and a faster suction of the metal back from the closing element (8) and the nozzle (7) into the passage (6) of the mouthpiece (5), is achieved.
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申请公布号 |
US5636680(A) |
申请公布日期 |
1997.06.10 |
申请号 |
US19950496008 |
申请日期 |
1995.06.28 |
申请人 |
DANSK INDUSTRI SYNDIKAT A/S |
发明人 |
MOGENSEN, VAGN;PEDERSEN, STEEN |
分类号 |
B22D35/00;B22C9/08;B22D17/20;B22D18/04;B22D21/02;B22D23/00;(IPC1-7):B22D37/00 |
主分类号 |
B22D35/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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