Post-mixed cutting torch having a pilot mode and method of opera

Details Post-mixed cutting torch having a pilot mode and method of opera Post-mixed cutting torch having a pilot mode and method of opera

1997-08-13

1998-08-11

Kastler, Scott

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148194, 266 48, 266 77, B23K 700

Patent

active

057922810

ABSTRACT:
A post-mixed cutting torch selectively operable in a pilot mode and a cutting mode is provided by the present invention. The control body includes a fuel passage and an oxygen passage which is divided into a preheat oxygen supply branch and a cutting oxygen supply branch. A fuel flow valve is provided in the fuel passage and an oxygen flow valve is provided in the cutting oxygen supply branch of the oxygen passage. Advantageously, an interconnecting passage extends between the preheat oxygen supply branch and the cutting oxygen supply branch. Accordingly, the torch is operable in a preheat/cutting mode wherein oxygen is directed through both the preheat and cutting oxygen apertures of a cutting nozzle. In addition, each of the fuel and oxygen flow valves is associated with a bypass channel which allows the torch to be operable in a fuel saving pilot mode wherein oxygen is directed through both the preheat and cutting oxygen apertures of a cutting nozzle.

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patent: 5700421 (1997-12-01), Bissonnette

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