发明名称 |
FREMGANGSMAATE OG ANORDNING FOR STOEPING AV JERN SOM ER BLITT BEHANDLET MED MAGNESIUM. |
摘要 |
A casting furnace is fed an inert gas under pressure through a feed line with the pressure being regulated by a melt level control device. When the pressure is reduced, the inert gas is exhausted from the casting furnace by an exhaust line, the feed line having a check valve to prevent gas which is contaminated by magnesium from entering the feed line. An oxidizing gas, preferably pressurized air, is periodically fed into the exhaust line by an oxidizing gas line for cleaning the drain line and the pressure-controlling aperture therein by oxidizing the magnesium. |
申请公布号 |
NO165283(C) |
申请公布日期 |
1991.01.23 |
申请号 |
NO19860000584 |
申请日期 |
1986.02.17 |
申请人 |
FISCHER AKTIENGESELLSCHAFT, GEORG |
发明人 |
DERSCH, STEFAN;RIETZSCHER, ROLF;RIETHMANN, MAX |
分类号 |
C22C33/10;B22D1/00;B22D3/00;B22D18/00;B22D18/04;B22D23/00;B22D27/13;B22D39/06;B22D41/50;C21C1/08;C21C1/10;F27D25/00 |
主分类号 |
C22C33/10 |
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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