Claims
- 1. A method of plasma-MIG welding, which comprises flowing a thermally ionizable gas past a non-consumable electrode through a non-constricting nozzle toward a workpiece; initially establishing a plasma arc between said non-consumable electrode and said workpiece to initiate and sustain a plasma flow extending through the nozzle along a non-deviated direct path from the non-consumable electrode to the workpiece; initially feeding a consumable electrode through the nozzle toward the workpiece along a path generally parallel to the direct path of said plasma flow but laterally spaced and separated from the same; and thereafter striking a MIG-arc between the consumable electrode and the workpiece, the resulting MIG-arc thereby laterally displaying the plasma flow from its initial direct path and drawing the same to said MIG-arc to substantially concentrically surround the latter, a slight constriction of said laterally displaced plasma flow being simultaneously effected by said MIG-arc, said slight constriction being caused solely by said MIG-arc.
- 2. A method according to claim 1, in which the non-consumable electrode and the consumable electrode are positioned such that their respective center lines are situated on either side of the nozzle axis, said electrode center lines and said nozzle axis defining a plane.
Priority Claims (1)
Number |
Date |
Country |
Kind |
7403866 |
Mar 1974 |
NLX |
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Parent Case Info
This is a continuation, of application Ser. No. 558,018, filed Mar. 13, 1975 now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3612807 |
Liefkens |
Oct 1971 |
|
3830997 |
Essers et al. |
Aug 1974 |
|
3891824 |
Essers et al. |
Jun 1975 |
|
Non-Patent Literature Citations (1)
Entry |
"Plasma MIG Welding," Welding and Metal Fabrication, 12-1974, Sheet #46. |
Continuations (1)
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Number |
Date |
Country |
Parent |
558018 |
Mar 1975 |
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