Method of cooling a quenching bath of melted salt

Details Method of cooling a quenching bath of melted salt Method of cooling a quenching bath of melted salt

1975-07-07

1978-02-07

Steiner, Arthur J.

Metallurgical apparatus

Process

148 15, 266112, G05D 2313

Patent

active

040722988

ABSTRACT:
A method of cooling a heat treatment bath of melted salt into which heat is being introduced through the quenching of hot workpieces, the heat being removed from the salt bath through the introduction of a partially evaporated cooling medium, preferably water, whose complete evaporation takes place in direct contact with the melted salt, a portion of the latter being at the same time entrained in a circulatory flow out of the treatment tank and back into it, thereby agitating the salt bath for temperature equalization. The device includes a heat exchanger immersed in the salt bath for the partial evaporation of the cooling medium, and a circulation pipe for direct contact of the cooling medium with the melted salt.

REFERENCES:
patent: 2052254 (1936-08-01), Shaver
patent: 2537830 (1951-01-01), Holden
patent: 2931745 (1960-04-01), Halgren et al.
patent: 3645802 (1972-02-01), Keough
patent: 3915759 (1975-10-01), Smollett
"Water in Molten Salt Measures Quenching Power Lowers Operating Temperature", Case et al., Metal Progress, Oct. 1953, pp. 122-124.

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