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US 2021/0245290 A1Published application
Arc welding head and a welding arrangement
AssigneeEsab AB
InventorHannes Raudsepp
Life of this patent
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Abstract
An arc electric welding head comprising a first contact device housing a first duct for feeding a first electrode and providing electrical contact between a first power source and said first electrode, a second contact device housing a second duct for feeding a second electrode and providing electrical contact between a second power source and said second electrode, said first and second contact devices being electrically insulated from each other, said first and second ducts being parallel.
Claims20
An electric arc welding head comprising:
- a first contact device housing a first duct for feeding a first electrode to a weld puddle while providing electrical contact between a first power source and the first electrode;
- a second contact device housing a second duct for feeding a second electrode to the weld puddle while providing electrical contact between a second power source and the second electrode, wherein the first contact device and the second contact device are electrically insulated from each other, the first and second ducts are parallel to each other, and the first duct is separated from the second duct by a distance which allows a first arc formed between the first electrode and a workpiece on which the weld puddle is formed and a second arc formed between the second electrode and the workpiece to have an overlapping region;
- and
- an insulated third duct arranged to feed a cold wire into the overlapping region so that the first electrode, the second electrode, and the cold wire each operate in the weld puddle.
1 more element
A welding system comprising:
- a first wire feeder for feeding a first electrode to a weld puddle;
- a second wire feeder for feeding a second electrode to the weld puddle;
- a third wire feeder for feeding a cold wire to the weld puddle;
- a first power source connected to a first contact device housing a first duct and providing electrical contact between the first power source and the first electrode;
- a second power source connected to a second contact device housing a second duct providing electrical contact between the second power source and the second electrode;
- and
- an insulated duct for feeding the cold wire;
- wherein the first contact device, the second contact device, and the insulated duct are arranged in an integral welding head so that a first arc formed between the first electrode and a workpiece on which the weld puddle is formed and a second arc formed between the second electrode and the workpiece generate an overlapping region into which the insulated duct feeds the cold wire, so that the first electrode, the second electrode, and the cold wire each operate in the weld puddle.
5 more elements
Dependencies are inferred from the claim text.