Method of repairing ingot mold bottoms

Details Method of repairing ingot mold bottoms Method of repairing ingot mold bottoms

1975-07-23

1976-07-27

DiPalma, Victor A.

Metal working

Method of mechanical manufacture

Converting

29401D, 29530, 249174, 164111, 228119, 228241, 249204, B23P 700, B22D 4100, B22D 4108

Patent

active

039711170

ABSTRACT:
A method for repairing eroded bottoms of ingot molds by forming a casting space in the bottom of the mold at the point of erosion, the casting space having an hour-glass type shape, placing the ingot mold on a molding platform so as to close off the bottom of the casting space with a refractory material, placing a protective layer of a compactable refractory material about the interior of the mold and introducing to the casting space an alumino-thermic material and then igniting said alumino-thermic material such that the weld metal from the reaction thereof completely fills the casting space. Methods for repairing the bottoms of closed bottom as well as plug bottom molds are disclosed.

REFERENCES:
patent: 789828 (1905-05-01), West et al.
patent: 2487165 (1949-11-01), Miller
patent: 2563559 (1951-08-01), Sneva
patent: 2722734 (1955-11-01), Grant
patent: 2876535 (1959-03-01), Ray
patent: 3421570 (1969-01-01), Guntermann
patent: 3682435 (1972-08-01), Lofberg et al.
patent: 3918624 (1975-11-01), Kurihara

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