SYSTEM AND METHOD FOR GROUND SWITCHING
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United States of America Patent
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Issued Date -
Mar 24, 2016
app pub date -
Sep 19, 2014
filing date -
Sep 19, 2014
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Abstract
The invention described herein generally pertains to a system and method related to reducing magnetic arc blow and steering the arc with two or more ground connections on the workpiece. The invention employs an AC switch component that is configured to activate one of the two or more ground connections to complete an electrical connection via the arc between the electrode and the workpiece. The activated ground connection can be used to counteract a buildup of magnetic field due to arc blow. Moreover, AC switch component can be configured to manipulate a direction of an arc based on activated a ground connection. In addition, AC switch component can oscillate between two or more ground connections to agitate a puddle formed by an electrode to release gas from the puddle and reduce porosity of a resulting weld.
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