Continuous heat treating process for low carbon structural steel

Details Continuous heat treating process for low carbon structural steel Continuous heat treating process for low carbon structural steel

1972-05-11

1976-01-20

Dean, R.

Metal treatment

Compositions

Heat treating

148 12F, 148 124, 148 39, 148134, 148144, 148145, 148150, 148154, C21D 118

Patent

active

039335348

ABSTRACT:
An improvement in a process for preparing a structural steel having a maximum carbon content of 0.26 weight percent, the balance comprising iron, wherein the steel is continuously heated with the use of rapid heating, followed by quenching, the improvement comprising heating the steel only in its shell to a temperature between A.sub.cl and 1,300.degree.C such that the core heats up at an average rate of at least 100.degree.C/sec. up to a temperature between incipient pearlite transformation (A.sub.cl) and 900.degree.C, and thereafter, but prior to the attainment of equilibrium with respect to the carbon content, quenching said steel.

REFERENCES:
patent: 1946876 (1934-02-01), Northrup
patent: 3756870 (1973-09-01), Kasper et al.

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