US 12,330,247 B2 · Metal-cored wire electrode for high deposition rate welding processes

Abstract

The present disclosure relates generally to an improved design of a metal-cored welding wire electrode for use on a high deposition rate welding process that resistively preheats the wire prior to being subjected to the welding current. The preheat circuit reduces the welding current drawn by the electrode so that higher wire feed speeds, and thus higher deposition rates, may be obtained. The metal-cored welding wire includes both a higher fill rate (a greater percentage of the welding wire is the granular core) along with added sulfur and an added bead wetting agent. The bead wetting agent may be one or more of selenium, tellurium, arsenic, gallium, bismuth, and tin. The improved metal-cored welding wire leads to an enhanced weld deposit appearance that means the weld deposits are less likely to be rejected as unusable.

Claims20

Dependent claims

A metal-cored welding wire electrode for high deposition rate welding comprising:

a metallic sheath encapsulating a granular core, wherein the metallic sheath comprises between 70 at 80 wt. % and the granular core comprises between 20 and 30 wt. % of the metal-cored welding wire electrode;
wherein the metal-cored welding wire electrode comprises, by weight of the metal-cored welding wire electrode:
0.01 to 0.03 wt. % sulfur,
0 to 0.12 wt. % carbon,
0.01 to 0.15 wt. % of a bead wetting agent, and
0 to 1 wt. % nickel;
and
wherein the bead wetting agent consists of one or more of selenium, tellurium, arsenic, gallium, and tin.

5 more elements

Dependencies are inferred from the claim text.

Metal-cored wire electrode for high deposition rate welding processes

Life of this patent

Metal-cored wire electrode for high deposition rate welding processes

Life of this patent

Abstract

Claims20