Apparatus for sequentially annealing and then hardening long met

Details Apparatus for sequentially annealing and then hardening long met Apparatus for sequentially annealing and then hardening long met

1983-12-09

1985-02-05

Rutledge, L. Dewayne

Metallurgical apparatus

With control means responsive to sensed condition

With means supplying a treating agent

266 87, 266108, 266255, C21B 962, F27B 514

Patent

active

044974744

ABSTRACT:
A method of sequentially annealing and then hardening long metal components (1,2,3,4) made of fine or special steel with an austenitic structure, said method including at least one annealing operation by supplying heat from the outside in a reducing or neutral atmosphere and one quenching operation by contact with a flow of cooling fluid and an apparatus for putting said method into practice.
The flow rate and the temperature of the cooling fluid are adjusted so that the components undergo no transformation of their austenitic structure during hardening.
Application to annealing and hardening armoured electric components with conductor cores, inorganic insulant coatings and outer sheaths made of austenitic steel.

REFERENCES:
patent: 2983497 (1961-05-01), Dailey, Jr.
patent: 3496033 (1970-02-01), Gilbreath et al.
patent: 3593972 (1971-07-01), Wehrle et al.
patent: 3904444 (1975-09-01), Grange
patent: 3950192 (1976-04-01), Golland et al.

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