Process and installation for automatic ignition of a plasma cutting torch
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 21, 1981
Grant Date -
N/A
app pub date -
Jan 22, 1980
filing date -
Feb 1, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a plasma cutting plant comprising a principal generator feeding a plasma arc between a workpiece and an electrode of a torch comprising a tube, with initial ignition by means of an ignition or striking arc between the electrode and the tube, via the resistor and the contactor. A circuit comprising a resistor and an excitation coil of a relay is installed across the terminals of the contactor. When the torch has been brought to the correct distance from the workpiece, the circuit detects this correct spacing and acts on the feed motor to stop the latter immediately.
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Cited Art Landscape
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