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US 6,693,252 B2Granted
Plasma MIG welding with plasma torch and MIG torch
AssigneeIllinois Tool Works Inc.
InventorsLin Zhang, Timm Matus
Life of this patent
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Abstract
Methods and apparatuses for plasma MIG welding or TIG MIG welding are disclosed. They include a plasma or TIG torch for following along a weld path by a MIG torch (or the order may be reversed). A constant distance may be maintained between the torches, and the angle of the torches, relative to the workpiece, may vary. The MIG process is performed EP or EN in various embodiments.
Claims25
A method of plasma MIG welding comprising:
- creating a plasma arc between a plasma torch and at least one workpiece;
- providing relative movement of the plasma arc along a weld path;
- creating a MIG arc between a MIG torch and the at least one workpiece;
- providing movement of the MIG arc relative to the at least one workpiece along the weld path;
- and
- wherein the MIG arc follows the plasma arc along the weld path.
3 more elements
A system of plasma MIG welding comprising:
- a plasma torch;
- a MIG torch;
- and
- wherein the MIS torch and the plasma torch are mounted such that they are a fixed distance from one another.
1 more element
A system of plasma MIG welding comprising:
- means for creating a plasma arc between a plasma torch and at least one workpiece;
- plasma movement means for providing relative movement of the plasma arc along a weld path, connected to the plasma torch;
- means for creating a MIG arc between a MIG torch and the at least one workpiece;
- and
- means for providing movement of the MIG arc relative to the at least one workpiece along the weld path, connected to the MIG torch and the plasma and connected to the plasma movement means, whereby the MIG arc follows the plasma arc along the weld path.
2 more elements
A system of plasma MIG welding comprising:
- a plasma torch;
- a MIG torch;
- and
- means for mounting the MIG torch and the plasma torch a fixed distance from one another.
1 more element
Dependencies are inferred from the claim text.