Method and apparatus for quenching heat treated objects

Details Method and apparatus for quenching heat treated objects Method and apparatus for quenching heat treated objects

1994-07-22

1995-09-05

Rosenberg, Peter D.

Metallurgical apparatus

Process

Cooling

266114, 266116, C21D 166

Patent

active

054472938

ABSTRACT:
A quench chute for use in heat treating objects extends from one end of a furnace into a tank filled with quenching fluid. The chute has a passage therein through which heat treated objects fall from the furnace into the tank. Laminar sheets of quenching fluid are introduced into the chute above the quenching fluid level in the tank and a portion of the chute is constructed from a screen which allows quenching fluid to exit the chute and return to the quench tank. A portion of the chute below the quenching fluid level is curved and has a plurality of fluid manifolds disposed therealong for introducing high pressure jets of fluid into the chute. As the objects fall from the furnace into the chute, they first pass through the laminar sheets of quenching fluid. The objects then fall through the quenching fluid and glance off of the curved portion of the chute. The objects are decelerated by the glancing contact with the chute and by the jets of quenching fluid introduced into the chute by the manifold. The parts are ultimately deposited on a conveyor in the tank. The parts land on the conveyor at an angle substantially parallel thereto. Damaging direct impact of hot ductile parts with conveying components and with each other is replaced by low velocity fluid-cushioned glancing impacts to reduce part damage and mixing.

REFERENCES:
patent: 3531096 (1970-09-01), Krach et al.
patent: 3684263 (1972-08-01), Genrich
patent: 4308881 (1982-01-01), Bertolotti
patent: 4375820 (1983-03-01), Vinaresik
patent: 4486009 (1984-12-01), Kopf
patent: 4487398 (1984-12-01), Lincoln et al.
patent: 4504042 (1985-03-01), Kruppert
patent: 4629165 (1986-12-01), Rothe
patent: 4632297 (1986-12-01), Hermann

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