Tubular welding wire with a thinner sheath for improved deposition rates
AssigneeHobart Brothers Company
InventorsSteven Edward Barhorst, Joseph C. Bundy, Michael Scott Bertram
Life of this patent
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Abstract
The disclosure relates generally to welding and, more specifically, to tubular welding wires for arc welding processes, such as Gas Metal Arc Welding (GMAW), Flux Core Arc Welding (FCAW), and Submerged Arc Welding (SAW). The tubular welding wire includes a metal sheath surrounding a granular core. The metal sheath includes greater than approximately 0.6% manganese by weight and greater than approximately 0.05% silicon by weight. Further, the metal sheath has a thickness of between approximately 0.008 inches and approximately 0.02 inches.
Claims28
A tubular welding wire for arc welding, comprising:
- a metal sheath including iron, high-carbon steel, or low-carbon steel that surrounds a granular core,
- wherein the metal sheath comprises between 0.6% and 2.0% manganese by weight, between 0.05% and 2% silicon by weight, between 0.01% and 0.2% carbon by weight, less than 0.02% sulfur by weight, and less than 0.02% phosphorus by weight,
- wherein the metal sheath has a thickness of between 0.008 inches and 0.02 inches,
- wherein the tubular welding wire is configured to form a weld deposit on a workpiece at a deposition rate of at least 0.02 pounds per hour per ampere (lbs/hr/amp) of welding current,
- wherein the granular core comprises less than 2% manganese by weight, and less than 2% silicon by weight,
- wherein the granular core comprises 50% or more of the tubular welding wire by weight, and
- wherein the tubular welding wire has an outer diameter of between 0.03 inches and 0.25 inches.
A method of manufacturing a tubular welding wire for arc welding, comprising:
- disposing a granular core inside of a metallic sheath, wherein the metal sheath includes iron, high-carbon steel, or low-carbon steel, wherein the granular core comprises less than 2% manganese by weight, and less than 2% silicon by weight, wherein the metal sheath comprises between 0.6% and 2.0% manganese by weight, between 0.05% and 2% silicon by weight, between 0.01% and 0.2% carbon by weight, less than 0.02% sulfur by weight, and less than 0.02% phosphorus by weight, wherein the metal sheath has a thickness of between 0.008 inches and 0.02 inches, and wherein the granular core comprises 50% or more of the tubular welding wire by weight;
- and
- compressing the granular core within the metallic sheath to yield the tubular welding wire, wherein the tubular welding wire has a outer diameter between 0.03 inches and 0.25 inches, and wherein the tubular welding wire is configured to form a weld deposit on a workpiece at a deposition rate of at least 0.02 lbs/hr/amp of welding current.
Dependencies are inferred from the claim text.