Method for performing a welding process, welding device and wire coil for such a welding device

Patent metadata

Field	Value
Publication number	US-9545683-B2
Application number	US-201414483320-A
Country	US
Kind code	B2
Filing date	Sep 11, 2014
Priority date	Sep 12, 2013
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

A method and a welding device for performing a welding process on a workpiece by a welding torch, uses a melting welding wire, which is arranged on a wire coil and may be supplied to the welding torch via a hose package, wherein different welding wires and different welding parameters are used depending on the geometry of the workpiece. A welding wire formed by the different interconnected welding wires in lengths depending on the geometry of the workpiece is arranged on the wire coil, so the welding process may be performed without interruptions using the different welding wires and the different welding parameters by supplying to the welding torch the welding wire formed by the different interconnected welding wires from the wire coil.

First claim

What is claimed is:

1. A method for performing a welding process on a workpiece by a welding torch, using a melting composite welding wire, the method comprising steps of:
preassembling and interconnecting at least first and second welding wires in at least first and second lengths to form the composite welding wire, wherein the at least first and second welding wires have different material compositions or different diameters or different material compositions and different diameters and wherein the at least first and second lengths correspond to respective lengths of the composite welding wire used with respective different at least first and second welding parameters in the welding process,
supplying the composite welding wire to the welding torch from a wire coil, and
performing the welding process without interruptions using the different at least first and second welding parameters by supplying to the welding torch the composite welding wire from the wire coil.

2. The method according to claim 1 , further comprising a step of:
detecting a change of the interconnected at least first and second welding wires forming the composite welding wire during supply of the composite welding wire.

3. The method according to claim 2 , further comprising a step of:
displaying the change of the interconnected at least first and second welding wires forming the composite welding wire.

4. The method according to claim 2 , wherein for the detecting an indicator arranged in the region of the transition from the first welding wire to the second welding wire connected thereto is detected.

5. The method according to claim 2 , wherein for the detecting the at least first and second welding parameters are detected.

6. The method according to claim 2 , further comprising a step of automatically changing the first welding parameters to the second welding parameters when the change of the interconnected first and second welding wires forming the composite welding wire is detected.

7. The method according to claim 1 , further comprising a step of:
communicating information about each of the at least first and second welding wires on the wire coil from an information carrier arranged on the wire coil to a control device of the welding device.

8. A welding device for performing a welding process on a workpiece at by a welding torch, using a melting composite welding wire, the welding device comprising:
a welding torch,
a wire coil,
a hose package, and
the composite welding wire, the composite welding wire being arranged on the wire coil and being suppliable to the welding torch via the hose package,
wherein the composite welding wire is formed by preassembling and interconnecting at least first and second welding wires in at least first and second lengths and is arranged on the wire coil, wherein the at least first and second welding wires have different material compositions or different diameters or different material compositions and different diameters and wherein the at least first and second lengths correspond to respective lengths of the composite welding wire used with respective different at least first and second welding parameters in the welding process, so the welding process may be performed without interruptions using the different at least first and second welding parameters by supplying to the welding torch the composite welding wire from the wire coil.

9. The welding device according to claim 8 , further comprising an indicator arranged in the region of the transition of the interconnected at least first and second welding wires forming the composite welding wire.

10. The welding device according to claim 8 , further comprising a detector for detecting the change of the interconnected at least first and second welding wires forming the composite welding wire.

11. The welding device according to claim 10 , wherein the detector is formed by an optical detector, a magnetic detector, or a device for detecting the parameters of the electric arc.

12. The welding device according to claim 8 , further comprising:
an information carrier arranged on the wire coil, the information carrier containing information about each of the at least first and second welding wires on the wire coil, and
a reader configured to read the information carrier.

13. A wire coil comprising a composite welding wire for performing a welding process using a welding device,
wherein the composite welding wire is formed by preassembling and interconnecting at least first and second welding wires in at least first and second lengths, wherein the at least first and second welding wires have different material compositions or different diameters or different material compositions and different diameters and wherein the at least first and second lengths correspond to respective lengths of the composite welding wire used with respective different at least first and second welding parameters in the welding process.

14. The wire coil according to claim 13 , wherein the interconnected at least first and second welding wires forming the composite welding wire are welded together.

15. The wire coil according to claim 13 , further comprising an indicator arranged in the region of the transition from the first welding wire forming the composite welding wire to the second welding wire connected thereto.

16. The wire coil according to claim 15 , wherein the indicator comprises:
a ring around one of the at least first and second welding wires forming the composite welding wire, the ring being made of a different material than the at least first and second welding wires, or
a mark on one of the at least first and second welding wires forming the composite welding wire.

17. The wire coil according to claim 13 , further comprising an information carrier containing information about each of the at least first a second welding wires.

Assignees

• Fronius Int Gmbh

Inventors

• Ruehrnoessl Manfred
• Schorn Markus
• Staufer Herbert

Classifications

• B23K9/0956 Primary

  using sensing means, e.g. optical · CPC title

• B23K9/121 Primary

  Devices for the automatic supply of at least two electrodes one after the other · CPC title

• B23K9/26

  Accessories for electrodes, e.g. ignition tips · CPC title

• B23K9/125

  Feeding of electrodes (for stabilising arc B23K9/073) · CPC title

• B23K35/0255 Primary

  for use in welding (B23K35/0205 takes precedence) · CPC title