发明名称 Valve closure gate assembly for foundry ladles
摘要 The present invention relates to the foundry industry and solves the problem of extended service life of valve closure gate assemblies for foundry ladles. The valve closure gate assembly of the present invention comprises two mutually slidable heat-resistant gates furnished with a protecting layer of an oxide refractory material and having flow-through rings made from an oxide refractory material disposed in the openings of the gates. The respective upper and lower surfaces of the rings are coated with a layer of refractory material.
申请公布号 US4720083(A) 申请公布日期 1988.01.19
申请号 US19840601303 申请日期 1984.04.17
申请人 CESKOSLOVENSKA AKADEMIE VED 发明人 ZVERINA, KAREL;KROUPA, PETR;SZABO , JOSEF;MAROSZCZYK, VESLAV;BOEHM, VALTER;CIESLAR, ANTONIN
分类号 B22D37/00;B22D41/28;B22D41/32;B22D41/50;B22D41/52;B22D41/54;(IPC1-7):B22D37/00 主分类号 B22D37/00
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