Apparatus for heat treatment of steel rods

Details Apparatus for heat treatment of steel rods Apparatus for heat treatment of steel rods

1988-02-05

1989-10-03

Brody, Christopher W.

Metallurgical apparatus

Means treating a continuum of work

With heating means

266112, C21D 9573

Patent

active

048711462

ABSTRACT:
A multifunction apparatus for the direct heat treatment of a medium- to high-carbon steel rod in a lower quench line and the treatment of low carbon steel in an upper quench line. A hot-rolled rod is transported on a conveyor in the form of a sequence of non-concentric rings, the conveyor, being operative between a first position in contact with the lower quench line and a second position in the upper cooling line. In the lower quench line the rod is subjected to controlled cooling in a coolant so that the greater part of any austenite in the entire length of the rod is substantially uniformly transformed to a fine pearlite structure. A heat holding vessel is operated under conditions that transforms any residual defects into pearlite.

REFERENCES:
patent: 4242153 (1980-12-01), Vitelli et al.
patent: 4330111 (1982-05-01), Matsuoka et al.
patent: 4375884 (1983-03-01), Grotepass
patent: 4397449 (1983-08-01), Kaneda et al.
patent: 4526627 (1985-07-01), Iwata et al.

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