Method for zone heat treatment of a metallic workpiece

Details Method for zone heat treatment of a metallic workpiece Method for zone heat treatment of a metallic workpiece

1986-12-15

1988-05-10

Brody, Christopher W.

Metal treatment

Compositions

Heat treating

148154, C21D 100

Patent

active

047433094

ABSTRACT:
A method for zone heat treatment of metallic workpiece with a comparatively large cross-section, in which the workpiece is successively passed through a zone of higher temperature in such a way that the temperature of the workpiece initially rises steeply as a function of the displacement in the feed direction, passes through a flat maximum and then falls with a small slope. The method is carried out by passing the workpiece through a heating device equipped with a heating coil and a subsequent insulation body, or alternatively through a furnace. In a special embodiment of the method for obtaining the highest possible temperature gradient, the workpiece is drawn from a water bath and then passed through the heating coil.

REFERENCES:
patent: 3746581 (1973-07-01), Carins et al.
patent: 3975219 (1976-08-01), Allen et al.
patent: 4583608 (1986-04-01), Field et al.

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