Method for making a refractory article

Details Method for making a refractory article Method for making a refractory article

1980-11-13

1982-04-06

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Treatment of material by vibrating, jarring, or agitating...

295274, 264219, 264250, 264256, 264333, 264336, B29D 300, B28B 108

Patent

active

043235298

ABSTRACT:
Method for making a refractory valve is disclosed. The 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 therebetween. 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.

REFERENCES:
patent: 2399313 (1946-04-01), Ballard
patent: 2936505 (1960-05-01), Witucki et al.
patent: 3510547 (1970-05-01), Eisler
patent: 3839521 (1974-10-01), Robinson
patent: 3877675 (1975-04-01), Shapland
patent: 3912134 (1975-10-01), Poran
patent: 3926406 (1975-12-01), Hind
patent: 3937372 (1976-02-01), Bode

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