Apparatus for continuous treatment of low-carbon cold-rolled ste

Details Apparatus for continuous treatment of low-carbon cold-rolled ste Apparatus for continuous treatment of low-carbon cold-rolled ste

1980-02-28

1982-05-18

Combs, Ervin M.

Metal deforming

By use of roller or roller-like tool-element

With modification or control of temperature of work, tool or...

266111, B21B 4502

Patent

active

RE0309338

ABSTRACT:
An apparatus for continuous treatment of cold rolled steel sheet. The apparatus has a continuous annealing furnace through which the sheet is continuously passed and which is composed of, in succession, a heating chamber for heating the cold rolled steel sheet to a temperature range of 700.degree. to 900.degree. C. within 2 minutes, a soaking chamber for keeping the sheet in the above temperature range for two minutes or less, a primary cooling chamber for rapidly cooling the sheet from the above temperature range to an overageing at a rate of 5.degree. to 30.degree. C./sec., an overageing chamber for keeping the sheet between 300.degree. to 400.degree. C. for up to eight minutes, and a secondary cooling chamber for cooling the sheet from the above overageing temperature to below 50.degree. C. within 2 minutes. Adjacent the output end of said furnace is apparatus for successively skin pass rolling, levelling and recoiling the sheet from the annealing furnace. The skin pass rolling apparatus has apparatus for replacing the working rolls.

REFERENCES:
patent: 2832711 (1958-04-01), Krahe et al.
patent: 2897698 (1959-08-01), Van Ormer
patent: 3443410 (1969-05-01), Beck
patent: 3552110 (1970-07-01), Shimizu et al.
patent: 3607456 (1971-09-01), Forand
An Investigation of the Radio Annealing of Sheet Gauge Mild Steel, R. F. Dewsnap, Special Report No. 79, The Iron & Steel Institute, London, 1963; pp. 112-120.

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