Addition of lithium aluminate to improve the performance of self shielded electrodes
A self-shielding welding electrode and a method of making the same are provided. The self-shielding welding electrode contains lithium aluminate in either the flux or the electrode portion of the electrode.
1. A welding electrode, comprising:
a metallic electrode portion, and
a flux portion adjacent to the metallic electrode portion,
wherein at least one of said metallic electrode portion and flux portion contains at least one of lithium aluminate and lithium zirconate, and
wherein the flux portion contains both lithium aluminate and magnesium oxide, and wherein the flux portion contains about 1 to about 15% by weight of lithium aluminate and magnesium oxide combined.
2. A welding electrode, comprising:
a metallic electrode portion, and
a flux portion adjacent to the metallic electrode portion,
wherein at least one of said metallic electrode portion and flux portion contains lithium aluminate, and at least one of about 1 to about 15% by weight of magnesium oxide and cerium oxide.
3. The welding electrode of claim 2 , wherein the electrode does not contain lithium ferrate.
4. The welding electrode of claim 2 , wherein the flux portion contains up to about 8% by weight of magnesium oxide.
5. The welding electrode of claim 2 , wherein the flux portion contains cerium oxide.
6. A welding electrode, comprising:
a metallic electrode portion, and
a flux portion adjacent to the metallic electrode portion,
wherein at least one of said metallic electrode portion and flux portion contains at least one of lithium aluminate and lithium zirconate, and at least one of magnesium oxide and cerium oxide, and
wherein the flux portion contains both lithium aluminate and magnesium oxide, and
wherein the flux portion contains about 1 to about 15% by weight of lithium aluminate and magnesium oxide combined.
7. A welding electrode, comprising:
a metallic electrode portion, and
a flux portion adjacent to the metallic electrode portion,
wherein at least one of said metallic electrode portion and flux portion contains at least one of lithium aluminate and lithium zirconate, and at least one of magnesium oxide and cerium oxide, and
wherein the flux portion comprises lithium aluminate and about 1 to about 15% by weight of magnesium oxide.
8. The welding electrode of claim 5 , wherein the flux portion contains about 12% by weight of cerium oxide or less.
9. The welding electrode of claim 5 , wherein the flux portion contains about 2% to about 5% by weight of cerium oxide.
10. The welding electrode of claim 7 , wherein the flux portion contains about 8% by weight of magnesium oxide or less.
11. The welding electrode of claim 7 , wherein the flux portion contains about 1 to about 20% by weight of lithium aluminate.
12. The welding electrode of claim 7 , wherein the flux portion contains about 5 to about 7% by weight of lithium aluminate.
13. The welding electrode of claim 7 , wherein said flux portion contains about 6 to about 8% by weight of lithium aluminate and about 6 to about 8% by weight of magnesium oxide.
14. The welding electrode of claim 13 , wherein the flux portion contains about 6 to about 7% by weight of lithium aluminate and about 6 to about 7% by weight of magnesium oxide.
15. The welding electrode of claim 1 , wherein the flux portion contains about 7% by weight of lithium zirconate or less.
16. The welding electrode of claim 1 , wherein the flux portion contains about 1 to 20% by weight of lithium zirconate.
17. The welding electrode of claim 1 , wherein the flux portion contains about 5 to 7% by weight of lithium zirconate.
18. The welding electrode of claim 6 , wherein the flux portion contains about 7% by weight of lithium zirconate or less.
19. The welding electrode of claim 6 , wherein the flux portion contains about 1 to 20% by weight of lithium zirconate.
20. The welding electrode of claim 6 , wherein the flux portion contains about 5 to 7% by weight of lithium zirconate.