Method of manufacturing springs, including the production of rod

Details Method of manufacturing springs, including the production of rod Method of manufacturing springs, including the production of rod

1978-02-06

1979-11-20

Stallard, W.

Metal treatment

Compositions

Heat treating

148 124, C21D 180, C21D 952, C21D 956

Patent

active

041749812

ABSTRACT:
The method of manufacturing coiled springs from hot-rolled steel rod (as distinguished from drawn wire) wherein round steel rod is formed by hot rolling with the gauge of the rod within a tolerance of .+-.0.010 inch and the rod not out of round more than a maximum of 0.015 inch, oil tempering the rod as produced in the hot rolling operation, without drawing it, by passing it through an austenitizing step, an oil quenching step and a tempering step, and winding springs from the oil tempered rod.

REFERENCES:
patent: 3589950 (1971-06-01), Justusson
patent: 3847678 (1974-11-01), Furr

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