Process for the manufacture of gate valves for closure devices h

Details Process for the manufacture of gate valves for closure devices h Process for the manufacture of gate valves for closure devices h

1979-02-06

1981-02-03

Arnold, Donald J.

Plastic and nonmetallic article shaping or treating: processes

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

By reciprocating or vibrating mold

222600, 251155, 251176, 251193, 264 72, 264268, 264333, B28B 108, B28B 308

Patent

active

042488150

ABSTRACT:
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.

REFERENCES:
patent: 2311358 (1943-02-01), Baily
patent: 3192292 (1965-06-01), Banks
patent: 3639552 (1972-02-01), Michal
patent: 3926406 (1975-12-01), Hind
patent: 3963815 (1976-06-01), Ezaki et al.
patent: 3970283 (1976-07-01), Hind
patent: 3995086 (1976-11-01), Plunguian
patent: 4039703 (1977-08-01), Kamijo et al.
patent: 4063668 (1977-12-01), Shepland
patent: 4175974 (1979-11-01), Grabner et al.
patent: 4179046 (1979-12-01), Jeschke et al.
patent: 4182466 (1980-01-01), Fehling et al.

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