发明名称 |
Process for the manufacture of gate valves for closure devices having a pouring nozzle and similar objects |
摘要 |
In order to manufacture a casting nozzle plate assembly, e.g., a sliding closure of a slide plate and collector nozzle, without having to further machine the working surface of one assembly a mold is arranged on a trued slab. A refractory concrete is poured into the mold while the mold is vibrated. The concrete is allowed to harden before being separated from trued slab. The resulting assembly has a smooth work (e.g., sliding) surface for contact with another element.
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申请公布号 |
US4248815(A) |
申请公布日期 |
1981.02.03 |
申请号 |
US19790009807 |
申请日期 |
1979.02.06 |
申请人 |
KAISER ELECTRO REFRACTAIRE FRANCE |
发明人 |
BLACKBURN, JAMES B.;RANDON, JEAN L. |
分类号 |
B28B1/14;B22D37/00;B22D41/30;B28B1/08;(IPC1-7):B28B1/08;B28B3/08 |
主分类号 |
B28B1/14 |
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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