Refractory plates for sliding gate valves

Details Refractory plates for sliding gate valves Refractory plates for sliding gate valves

B - Operations, Transporting

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D

39/113

B22D 41/08 (2006.01) B22D 41/26 (2006.01)

Patent

CA 1180552

ABSTRACT Two refractory plates are adapted to constitute the stationary base plate and movable sliding plate of a sliding gate valve for pouring metal melts, particularly non-ferrous melts such as aluminium. The base plate is made of soft, self-lubricating material having a low wettability, a high thermal conductivity and a low cold compression strength. The sliding plate is made of a hard, low porosity material with a low thermal conductivity and a high cold compression strength. The self-lubrication provides a good seal between the sliding surfaces of the plates thus inhibiting penetration of the melt between the sliding surfaces and the differential in thermal conductivities maintains the sliding surfaces at a high temperature thus preventing solidification of any melt that does penetrate between the sliding surfaces.

384004

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