Systems and methods for welding electrodes
AssigneeHobart Brothers Company
InventorsSteven Edward Barhorst, Mario Anthony Amata
Life of this patent
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Abstract
The invention relates generally to welding and, more specifically, to welding wires for arc welding, such as Gas Metal Arc Welding (GMAW) or Flux Core Arc Welding (FCAW). In one embodiment, a tubular welding wire for joining steel workpieces via arc welding includes a steel sheath disposed around a core. The core includes iron powder, iron titanium powder, silico-manganese powder, iron silicon powder, iron sulfide, graphite, rare earth compound, and a frit. The frit includes a Group I or Group II compound, silicon dioxide, and titanium dioxide. The graphite and the frit together comprise less than 10% of the core by weight.
Claims18
A tubular welding wire for joining steel workpieces via arc welding, comprising:
- a steel sheath disposed around a core, wherein the core comprises:
- iron powder;
- iron titanium powder;
- silico-manganese powder;
- iron silicon powder;
- iron sulfide;
- graphite;
- rare earth compound;
- and
- a frit comprising a Group I or Group II compound, silicon dioxide, manganese oxide or manganese dioxide, and titanium dioxide,
- wherein the graphite and the frit together comprise less than 10% of the core by weight.
A tubular welding wire for arc welding a coated steel workpiece, wherein the tubular welding wire comprises:
- a steel sheath disposed around a core,
- wherein the core comprises silico-manganese powder, iron silicon powder, graphite, and a frit,
- wherein the frit comprises:
- sodium oxide or potassium oxide;
- manganese oxide or manganese dioxide;
- silicon dioxide;
- and
- titanium dioxide;
- wherein the graphite and the frit together comprise less than 10% of the core by weight, and
- wherein, during arc welding, the tubular welding wire produces a soft arc that provides suitable heat to vaporize a coating of the coated steel workpiece and to fuse portions of the coated steel workpiece without burn-through.
A tubular welding wire for arc welding a coated steel workpiece, wherein the tubular welding wire comprises:
- a steel sheath disposed around a core, wherein the core consists of:
- alloying components, wherein the alloying components comprise iron powder, iron titanium powder, silico-manganese powder, and iron silicon powder;
- a carbon source;
- a sulfur source;
- a rare earth compound;
- and
- a frit comprising:
- sodium oxide or potassium oxide;
- manganese oxide or manganese dioxide;
- silicon dioxide;
- and
- titanium dioxide;
- and
- wherein, during arc welding, the tubular welding wire produces a soft arc that provides suitable heat to vaporize a coating of the coated steel workpiece and to fuse portions of the coated steel workpiece without burn-through.
Dependencies are inferred from the claim text.