CONSTANT POTENTIAL CONSTANT CURRENT AUTOMATIC CONTROL SYSTEM FOR AIR-CARBON ARC METAL REMOVAL

摘要

An automatic air carbon-ARC cutting and gouging torch has a fixed drive wheel for moving an electrode through an insulated housing and through a nozzle adapted to conduct air in a semicircular pattern along the electrode. Electrical current s supplied to the electrode through a contact shoe supported by and baised to the electrode by a lever arm, of which shoe causes the electrode to frictionally engage the drive wheel. Alternately idler rollers can be used in combination with the contact shoe to position the electrode for movement by the drive wheel means.