Method for producing a welded joint
A method for producing a welded joint between a high-strength aluminum alloy with a copper proportion as a first metal and a second metal, in which the welded joint is produced by CMT welding.
1. A method for producing a joint, the method comprising:
providing a high-strength aluminum alloy with a copper proportion as a first metal, wherein the first metal comprises a 7075 aluminum alloy;
providing a second metal;
producing a welded joint between the first metal and the second metal via inert gas welding, wherein producing a welded joint between the first metal and the second metal comprises conducting cold metal transfer welding using a welding wire comprising an aluminum alloy having alloying proportions of Si<0.5%, Fe<0.7%, Cu<0.2%, Mn 0.2-2%, Mg 1.0-8.0%, Cr<0.4%, Ti<0.3%, Zn<0.4% and Zr 0.01-0.4%.
2. The method of claim 1 , wherein the second metal comprises an aluminum alloy.
3. The method of claim 1 , wherein the second metal comprises a high-strength aluminum alloy without a copper proportion.
4. The method of claim 1 , wherein the second metal comprises a 7075 aluminum alloy.
5. The method of claim 1 , wherein the second metal comprises a 7020 aluminum alloy.
6. The method of claim 1 , wherein the second metal comprises steel.
7. The method of claim 1 , wherein the second metal comprises a steel sheet.
8. The method of claim 1 , wherein producing a welded joint between the first metal and the second metal comprises conducting cold metal transfer welding using a torch position at a pushing angle in a range of between 5 to 15 degrees.
9. The method of claim 1 , wherein producing a welded joint between the first metal and the second metal comprises conducting cold metal transfer welding using a welding speed in a range of between 0.05 to 1 m/min.
10. The method of claim 1 , wherein the producing a welded joint between the first metal and the second metal comprises conducting cold metal transfer welding using a welding wire having a diameter of 1.2 mm.
11. The method of claim 1 , wherein at least one of the first metal and the second metal comprises a metal sheet.
12. A method for producing a joint, the method comprising:
providing a high-strength aluminum alloy with a copper proportion as a first metal, wherein the first metal comprises a 7020 aluminum alloy;
providing a second metal;
producing a welded joint between the first metal and the second metal via inert gas welding, wherein producing a welded joint between the first metal and the second metal comprises conducting cold metal transfer welding using a welding wire comprising an aluminum alloy having alloying proportions of 0.2-2.0% Mn and 0.01-0.8% Zr.
13. A method for producing a joint, the method comprising:
providing a high-strength aluminum alloy with a copper proportion as a first metal, wherein the first metal comprises a 7020 aluminum alloy;
providing a second metal;
producing a welded joint between the first metal and the second metal via inert gas welding, wherein producing a welded joint between the first metal and the second metal comprises conducting cold metal transfer welding using a welding wire comprising an aluminum allow having alloying proportions of Si 0.2%, Fe 0.35%, Cu 0.02%, Mn 1.5%, Mg 5.5%, Cr 0.15%, Ti 0.1%, Zn 0.2% and Zr 0.25%.