In-line heat treatment of hot-rolled rod

Details In-line heat treatment of hot-rolled rod In-line heat treatment of hot-rolled rod

1974-12-18

1976-02-17

Stallard, W.

Metal treatment

Compositions

Heat treating

148156, C21D 714, C21D 952

Patent

active

039390152

ABSTRACT:
Hot rolled steel rod, containing less than 0.4% C, is cooled by a prescribed, interrupted-cooling procedure for producing rod with enhanced ability to receive cold work. In cooling from the austenite range, the rod is held within a specified, narrow temperature range for a period of at least about 2 minutes. The particular holding range is shown to be a function of carbon content, whereby low carbon steels (<0.28% C) are held at a prescribed temperature above 1,450.degree.F, while medium carbon steels are held at a temperature of about 1,250.degree.F.

REFERENCES:
patent: 3320101 (1967-05-01), McLean et al.
patent: 3390871 (1968-07-01), McLean et al.
patent: 3584494 (1971-06-01), Geipel et al.
patent: 3711338 (1973-01-01), Vitelli

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