The disclosed technology generally relates to consumable electrode wires and more particularly to consumable electrode wires having a core-shell structure, where the core comprises aluminum. In one aspect, a welding wire comprises a sheath having a steel composition and a core surrounded by the sheath. The core comprises aluminum (Al) at a concentration between about 3 weight % and about 20 weight % on the basis of the total weight of the welding wire, where Al is in an elemental form or is alloyed with a different metal element. The disclosed technology also relates to welding methods and systems adapted for using the aluminum-comprising electrode wires.

A resin laminated steel plate includes steel plates and resin layers. The resin layers are interposed between the steel plates. Each of the resin layer includes resin-absent areas where no resin exists. The resin-absent areas provide gaps in a predetermined range between the steel plates. Resin materials constituting the each of the resin layers are dotted such that the resin-absent areas include areas where no resin material exists.

A resin laminated steel plate includes steel plates and resin layers. The resin layers are interposed between the steel plates. Each of the resin layer includes resin-absent areas where no resin exists. The resin-absent areas provide gaps in a predetermined range between the steel plates. Resin materials constituting the each of the resin layers are dotted such that the resin-absent areas include areas where no resin material exists.

A welding filler metal or a welding filler metal product having, in weight percent: 17.0-23.0% chromium, 5.0-12.0% molybdenum, 3.0-11.0% tungsten, 3.0-5.0% niobium, 0-2.0% tantalum, 1.2-3.0% titanium, 0.005-1.50% aluminum, 0.0005-0.100% carbon, <2.0% iron, <5.0% cobalt, and balance nickel wherein the nickel is 56.0-65.0%. A weld deposit formed from the welding filler metal has a minimum yield strength in the as-welded condition of at least 72 ksi (496 MPa). Also, a weld deposit and a method of forming a weld deposit comprising, in weight percent: 17.0-23.0% chromium, 5.0-12.0% molybdenum, 3.0-11.0% tungsten, 3.0-5.0% niobium, 0-2.0% tantalum, 1.2-3.0% titanium, 0.005-1.50% aluminum, 0.0005-0.100% carbon, <8.0% iron, <5.0% cobalt, and balance nickel wherein the nickel is 56.0-65.0%. The weld deposit has a minimum yield strength in the as-welded condition of at least 72 ksi (496 MPa).

A welding filler metal or a welding filler metal product having, in weight percent: 17.0-23.0% chromium, 5.0-12.0% molybdenum, 3.0-11.0% tungsten, 3.0-5.0% niobium, 0-2.0% tantalum, 1.2-3.0% titanium, 0.005-1.50% aluminum, 0.0005-0.100% carbon, <2.0% iron, <5.0% cobalt, and balance nickel wherein the nickel is 56.0-65.0%. A weld deposit formed from the welding filler metal has a minimum yield strength in the as-welded condition of at least 72 ksi (496 MPa). Also, a weld deposit and a method of forming a weld deposit comprising, in weight percent: 17.0-23.0% chromium, 5.0-12.0% molybdenum, 3.0-11.0% tungsten, 3.0-5.0% niobium, 0-2.0% tantalum, 1.2-3.0% titanium, 0.005-1.50% aluminum, 0.0005-0.100% carbon, <8.0% iron, <5.0% cobalt, and balance nickel wherein the nickel is 56.0-65.0%. The weld deposit has a minimum yield strength in the as-welded condition of at least 72 ksi (496 MPa).

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.

Provided is a welding method using a special torch and a flux cored wire, in which the special torch has a suction nozzle between the contact tip and the shield nozzle, and the flux cored wire has a flux filled inside the steel outer casing, and a seam portion where both ends of a metal in a width direction of the steel outer casing are butted or overlapped in a longitudinal direction of the flux cored wire.

Provided is a welding method using a special torch and a flux cored wire, in which the special torch has a suction nozzle between the contact tip and the shield nozzle, and the flux cored wire has a flux filled inside the steel outer casing, and a seam portion where both ends of a metal in a width direction of the steel outer casing are butted or overlapped in a longitudinal direction of the flux cored wire.

A flux according to the present invention contains a rosin methyl ester in which the flux is a solid or solid-like flux at 25° C., and is used for an inside of a flux-cored solder or an exterior of a flux-coated solder.

The present invention relates to a flux-cored wire which can be used for straight-polarity gas-shielded arc welding, wherein a flux contains one or several types of metal compound powders and, when one or several metal elements constituting the metal compound powders are formed into stable compounds under a high-temperature environment, the relationship between the weighted geometric mean value (Φ) of the work functions of the stable compounds and the wire diameter (D) of the flux-cored wire satisfies the following formula: {1.00≤Φ≤−0.0908D.sup.2+0.5473D+1.547}.