Process for the manufacture of gate valves for closure...

Details Process for the manufacture of gate valves for closure... Process for the manufacture of gate valves for closure...

B - Operations, Transporting

28

B

25/120

B28B 1/08 (2006.01) B22D 41/08 (2006.01) B28B 7/00 (2006.01) B28B 21/00 (2006.01)

Patent

CA 1119391

ABSTRACT OF THE DISCLOSURE 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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