Moulded composite refractory parts

Details Moulded composite refractory parts Moulded composite refractory parts

F - Mech Eng,Light,Heat,Weapons

27

B

25/135, 39/99

F27B 14/00 (2006.01) B22D 41/00 (2006.01) B22D 41/28 (2006.01)

Patent

CA 1141159

ABSTRACT A sliding gate valve slide plate in a can has an integral collector nozzle and is formed as two conjoined refractory concrete mouldings with a cup-or trough-shaped metal foil lying in the joint therebe- tween. The foil is oxidisable in service to form a bond between the concretes. The concretes may be of different formulations, and the moulding with which molten metal makes contact is preferably the more resistant to the rigorous environment presented by flowing molten metal. The slide plate is cast in two steps using the shaped foil and the can as respective lost mould. members which coact with a planar polished surface to produce a cast slide plate needing effectively no finish grinding before installation in a valve.

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