Heat controller and method for heat treatment of metal

Details Heat controller and method for heat treatment of metal Heat controller and method for heat treatment of metal

1990-03-22

1993-02-09

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219505, 219549, 219535, 219494, 228231, 228119, 228232, H05B 102

Patent

active

051855135

ABSTRACT:
Method and apparatus for increasing the efficiency and safety of conducting heat treating operations with conventional welding equipment by eliminating mechanically-operated contacters. The apparatus operates on low power and produces low power level signals and controls power sources capable of producing high power levels for both welding operations and powering a heating element for heat treatment. The signal produced by the apparatus reflects a difference between an operator-selected desired temperature and the actual temperature of the workpiece and is current limited to a level proportional to the operator-selected desired power level of the welding power source to control the rate at which the heating element connected thereto heats the workpiece.

REFERENCES:
patent: 3036187 (1962-05-01), Goldstaub et al.
patent: 3851148 (1974-11-01), Schonert et al.
patent: 4611744 (1986-09-01), Fraser et al.
patent: 4613744 (1986-09-01), Fraser
patent: 4701589 (1987-10-01), Larsson
Cooperheat Technical Information (Exerpts) May, 1972.
Kemppi Classics Advertising Brochure (date unknown).
Kemppi PS 3500/PS 5500 Inverter Power Supplies--Advertising Brochure (date unknown).
Kemppi PS 2800 Inverter Power Supply-Advertising Brochure (date unknown).

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