Flux cored electrode with fluorine
AssigneeLincoln Global, Inc., a Corporation of the State of Delaware
InventorsNikhil Karogal, Rajeev Katiyar
Life of this patent
Estimating the term…
Abstract
A cored electrode to form a weld bead with little or no gas tracking. The cored electrode includes a metal sheath and a fill composition. The filling composition includes a slag forming agent and at least one fluorine containing compound.
Claims37
A cored electrode to form a weld bead with reduced gas tracking in a gas shielded electric arc welding process comprising a metal sheath and a fill composition, said fill composition including about 15-80 weight percent metal oxide slag forming agent, about 0.5-20 weight percent of at least one fluorine containing compound, and about 1-70 weight percent metal deoxidizer and/or metal alloying agent, said weight percent of said metal oxide slag forming agent greater than that weight percent of said fluorine containing compound, said fluorine containing compound providing at least about 0.2 weight percent fluorine based on the weight percent of said fill composition.
A method of forming a weld bead with reduced gas tracking comprising:
- a) providing a cored electrode that includes a metal sheath and a fill composition, said fill composition including about 15-80 weight percent metal oxide slag forming agent, about 0.5-20 weight percent of at least one fluorine containing compound, and about 1-70 weight percent metal deoxidizer and/or metal alloying agent, said weight percent of said metal oxide slag forming agent greater than that weight percent of said fluorine containing compound, said fluorine containing compound providing at least about 0.2 weight percent fluorine based on the weight percent of said fill composition;
- and,
- b) at least partially melting said cored electrode by an electric current to cause said melted portion of said cored electrode to be deposited on a workpiece.
Dependencies are inferred from the claim text.