Method of preventing oxidation during water quenching of steel s

Details Method of preventing oxidation during water quenching of steel s Method of preventing oxidation during water quenching of steel s

1975-09-29

1977-10-04

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148157, C21D 952

Patent

active

040522350

ABSTRACT:
In a continuous annealing operation of a cold rolled steel strip involving water quenching and over-aging treatments, a method employing a cooling system comprising a pair of rolls arranged to contact the surfaces of a steel strip, a pair of cooling water spray units arranged in symmetrical positions on both sides of the steel strip and a storage tank connected to the spray units. When the steel strip, heated to a temperature between 500.degree. to 800.degree. C is water quenched, the distortion of the strip during the water quenching is inhibited and the surface oxidation is reduced to such an extent that no supplementary pickling is required.

REFERENCES:
patent: 3410734 (1968-11-01), Taylor

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