Refractory slidegate with countersunk hole and method

Details Refractory slidegate with countersunk hole and method Refractory slidegate with countersunk hole and method

1985-03-12

1986-07-08

Newsome, John H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427423, B05D 108

Patent

active

045992428

ABSTRACT:
A slidegate assembly is provided for use with a ladle wherein at least one of the slidegates has a recess countersunk about an opening in its surface in sliding engagement with the other slidegate, and has an insert made of a refractory material sprayed in the recess by a plasma gun device. The insert has an opening aligned with the opening in the slidegate, and is substantially coplanar with the sliding surface. In the closed position, the insert closes the opening of the other slidegate. The refractory material applied by the liquid stabilized plasma gun device provides an extremely hard insert that is highly resistant to the temperatures and erosive effects of various molten melts and to the abrasive effects caused by multiple shifts of the assembly during pouring operations. A method is provided for producing slidegates for the assembly.

REFERENCES:
patent: 3685707 (1972-08-01), Shapland
patent: 3801083 (1974-04-01), Mantey et al.
patent: 3841539 (1974-10-01), Shapland et al.
patent: 4003561 (1977-01-01), Cudby
patent: 4096976 (1978-06-01), Daussan
patent: 4173685 (1979-11-01), Weatherly
patent: 4179046 (1979-12-01), Jeschke et al.
patent: 4182466 (1980-01-01), Fehling et al.
patent: 4257543 (1981-03-01), Muschner et al.
patent: 4288495 (1981-09-01), Terner et al.
patent: 4357387 (1982-11-01), George et al.

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