Aluminum metal-cored welding wire
The present disclosure relates to a metal-cored welding wire, and, more specifically, to a metal-cored aluminum welding wire for arc welding, such as Gas Metal Arc Welding (GMAW) and Gas Tungsten Arc Welding (GTAW). A disclosed metal-cored aluminum welding wire includes a metallic sheath and a granular core disposed within the metallic sheath. The granular core includes a first alloy having a plurality of elements, wherein the first alloy has a solidus that is lower than each of the respective melting points of the plurality of elements of the first alloy.
1. A metal-cored aluminum welding wire, comprising:
a seamless metallic sheath that comprises an extruded aluminum alloy tube; and
a granular core disposed within the metallic sheath, wherein the granular core includes a first alloy comprising a plurality of elements, wherein the first alloy has a solidus that is lower than each of the respective melting points of each of the elements of the first alloy;
wherein the solidus of the metallic sheath is at least 5% greater than the solidus of the first alloy;
wherein the granular core includes additional alloys, wherein each of the additional alloys has a solidus that is higher than the solidus of the first alloy; and
wherein the welding wire comprises less than 5% non-metal components by weight.
2. The welding wire of claim 1 , wherein the first alloy is a eutectic alloy or near-eutectic alloy.
3. The welding wire of claim 2 , wherein the first alloy is an aluminum-beryllium eutectic alloy.
4. The welding wire of claim 2 , wherein the first alloy is a titanium-boron eutectic alloy.
5. The welding wire of claim 1 , wherein the granular core comprises greater than 25% of the first alloy by weight.
6. The welding wire of claim 1 , wherein the metallic sheath is a 6xxx series aluminum alloy.
7. The welding wire of claim 2 , wherein the first alloy is selected from the group consisting of: an aluminum-copper eutectic alloy, an aluminum-iron eutectic alloy, an aluminum-lithium eutectic alloy, an aluminum-magnesium eutectic alloy, an aluminum-silicon eutectic alloy, and an aluminum-zinc eutectic alloy.
8. The welding wire of claim 2 , wherein the first alloy is a titanium-zirconium eutectic alloy.
9. The welding wire of claim 2 , wherein the first alloy is a zirconium-vanadium eutectic alloy.
10. The welding wire of claim 1 , wherein the metallic sheath is a 1xxx series aluminum alloy.
11. A metal-cored aluminum welding wire, comprising:
a seamless metallic sheath that comprises an extruded aluminum alloy tube; and
a granular core disposed within the metallic sheath, wherein the granular core includes a first alloy comprising a plurality of elements, wherein the first alloy is a eutectic alloy or near-eutectic alloy, wherein the first alloy has a solidus that is lower than each of the respective melting points of each of the elements of the first alloy;
wherein the granular core includes additional alloys, wherein each of the additional alloys has a solidus that is higher than the solidus of the first alloy;
wherein the granular core includes a second alloy that is a eutectic or near-eutectic alloy; and
wherein the welding wire comprises less than 5% non-metal components by weight.
12. The welding wire of claim 11 , wherein the first alloy is an aluminum-beryllium eutectic alloy.
13. The welding wire of 33 , wherein the first alloy is a titanium-boron eutectic alloy.
14. The welding wire of claim 11 , wherein the granular core comprises greater than 25% of the first alloy by weight.
15. The welding wire of claim 11 , wherein the metallic sheath is a 6xxx series aluminum alloy.
16. The welding wire of claim 11 , wherein the first alloy is selected from the group consisting of: an aluminum-copper eutectic alloy, an aluminum-iron eutectic alloy, an aluminum-lithium eutectic alloy, an aluminum-magnesium eutectic alloy, an aluminum-silicon eutectic alloy, and an aluminum-zinc eutectic alloy.
17. The welding wire of claim 11 , wherein the first alloy is a titanium-zirconium eutectic alloy.
18. The welding wire of claim 11 , wherein the first alloy is a zirconium-vanadium eutectic alloy.
19. The welding wire of claim 11 , wherein the metallic sheath is a 1xxx series aluminum alloy.