Method of and a plant for preheating and, possibly, heat-treatin

Details Method of and a plant for preheating and, possibly, heat-treatin Method of and a plant for preheating and, possibly, heat-treatin

1984-06-25

1986-03-25

Camby, John J.

Heating

Processes of heating or heater operation

Subjecting work to diverse treatments or graduated temperatures

432128, F27B 912, F27B 902

Patent

active

045780307

ABSTRACT:
A plant for preheating and, possibly, heat-treating bars (2) of aluminum or aluminum alloys and subsequently severing the bars (2) into slugs (10) comprises a furnace (4) for the heat treatment and preheating only, if desired, billet hot shears (7), and a quick preheating furnace (16) connected between the hot shears and the furnace. Upon selection of the operating mode of heat treatment of the bars (2), the quick preheating furnace serves as cooling apparatus providing for temperature controlled cooling and corresponding renewed heating to a predetermined billet pressing temperature when the admissible temperature is not reached. When the plant operates alone to preheat the material, the quick preheating furnace serves as preheating furnace the exhaust gases of which serve to preheat the bars (2) in the furnace (4) through an exhaust gas conduit (19). This plant permits particularly economic and flexible operation, i.e. operation which is easily adaptable to batches of different compositions of alloys or conditions of textures, exact temperature control being achieved to the desired billet pressing temperature.

REFERENCES:
patent: 3198501 (1965-08-01), Banister et al.
patent: 3837794 (1974-09-01), Phillips
patent: 3953247 (1976-04-01), Elhaus et al.
Nielsen, Hufnagel & Ganoulis, Aluminium-Taschenbuch (Aluminium-Verlag GmbH-Dusseldorf 1974).

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