Metal cored wire
AssigneeLincoln Global, Inc.
InventorsDennis Hartman, Vaidyanath Rajan
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Abstract
A metal cored electrode used to form a weld metal on a workpiece having improved yield strength, tensile strength and impact toughness.
Claims37
A metal alloy system having improved yield strength and tensile strength comprising of at least about 0.001 weight percent boron, at least about 0.05 weight percent molybdenum, at least about 0.005 weight percent titanium and a majority of iron, said metal alloy system having an average yield strength of at least about 70 ksi and an average tensile strength of at least about 90 ksi.
A method of forming a weld bead on a workpiece having improved yield strength and tensile strength by an electric arc welding process comprising:
- a) selecting a workpiece;
- and,
- b) at least partially melting a consumable electrode with an electric arc and depositing molten weld metal on the workpiece;
- and,
- c) allowing said molten weld metal to cool and solidify to form a weld bead on said workpiece, said weld metal including at least about 0.001 weight percent boron, at least about 0.05 weight percent molybdenum, at least about 0.005 weight percent titanium and a majority of iron, said weld metal having an average yield strength of at least about 70 ksiand an average tensile strength of at least about 90 ksi.
A metal cored electrode that can be used to form a weld bead on a workpiece having improved yield strength and tensile strength, said metal cored electrode comprising a metal sheath and a fill composition, said fill composition comprising over 12 weight percent of said electrode, said metal cored electrode including at least about 0.001 weight percent boron, at least about 0.05 weight percent molybdenum, at least about 0.005 weight percent titanium, and a majority weight percent iron.
Dependencies are inferred from the claim text.