Welding electrode with a fluoride based slag system
AssigneeChemetron Corporation
InventorKenneth E. Banks
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Abstract
A gas shielded, flux-cored welding electrode for vertical or overhead welding as well as for horizontal or flat welding is disclosed having a generally tubular metal sheath and a core defined within the sheath, wherein the core includes a slag forming system based, primarily, on about 2-7.5% of the fluorides of calcium and/or strontium.
Claims9
A welding electrode having a generally tubular ferrous metal sheath, and a core defined within the sheath for use in gas shield welding wherein the shielding gas is selected from the group consisting of carbon dioxide, inert gas, oxygen and inert gas mixtures, and mixtures thereof, comprising, by total weight of the electrode,
- from about 2.0 to 7.5% fluorides selected from the group consisting of calcium fluoride, strontium fluoride and mixtures thereof,
- up to about 1.0% silcates selected from the group consisting of calcium silcate, sodium silicate and mixtures thereof,
- less than about 1.0% iron oxide,
- less than about 2.75% manganese oxide,
- from about 0.3 to 1.0% silicon,
- from about 0.5 to 1.5% manganese,
- from about 0.3 to 1.0% magnesium, and
- the balance consisting of an alloy powder selected from the group consisting of nickel, chrome, molybdenum, iron and mixtures thereof.
Dependencies are inferred from the claim text.