Welding system for tig-welding

Details Welding system for tig-welding Welding system for tig-welding

B - Operations, Transporting

23

K

327/70

B23K 9/06 (2006.01) B23K 9/067 (2006.01) B23K 9/073 (2006.01)

Patent

CA 1228896

- 1 Abstract The invention relates to a welding system for Tig welding. To initiate welding, a tungsten electrode is brought momentarily into contact with the object to be welded and then separated from the object to initiate an arc. A low short-circuit current is led through the welding circuit during this contact. The interruption of the low short-circuit current is used to control the welding power source to increase the current in the welding circuit to a value above a preset welding current value intended for the welding process proper. After a short period of time, the current is decreased to the preset value. This system permits welding to be carried out safely and easily and without electrode "drag" marks being formed on the article to be welded.

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