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US 4,017,339 AGranted
Flux for use in submerged arc welding of steel
AssigneeKobe Steel, Ltd.
InventorsNaoki Okuda, Kazuo Tanaka
Life of this patent
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Abstract
A flux for use in submerged arc welding of steel, is formed from 10 - 70% iron powder, 10 - 50% MgO, 3 - 25% CaO, 2 - 25% carbonate based on the CO.sub.2 content, 0.03 - 1.5% of a compound or mixture containing boron oxide, the weight being based on the B.sub.2 O.sub.3 content, less than 15% TiO.sub.2, and at least one deoxidizing metallic agent selected from the group consisting of Si, Mn, Al, Ti and alloys thereof.
Claims3
A flux composition which is useful in submerged arc welding of steel, which comprises:
- 10 - 70% iron powder, 10 - 50% MgO, 3 - 25% CaO, 2 - 25% CO.sub.2 as derived from a carbonate compound, 0.03 - 1.5% B.sub.2 O.sub.3 as derived from B.sub.2 O.sub.3 itself, a boron compound from which B.sub.2 O.sub.3 can be derived or mixtures thereof, less than 15% TiO.sub.2, and at least one deoxidizing metallic agent selected from the group consisting of Si, Mn, Al, Ti and alloys thereof.
Dependencies are inferred from the claim text.