Alloy with the composition (in wt. %) Ni 33.5-35.0%, Cr 26.0-28.0%, Mo 6.0-7.0%, Fe<33.5%, Mn 1.0-4.0%, Si<0.1%, Cu 0.5-1.5%, Al 0.01%-0.3%, C<0.01%, P<0.015%, S<0.01%, N 0.1-0.25%, B 0.001-0.004%, Se>0-1.0%, if required W<0.2%, Co<0.5%, Nb<0.2%, Ti<0.1%, and impurities from the melting process, is used as a welding-plating material in the area of thermal processing systems, in particular rubbish, biomass, sewage sludge and substitute fuel systems, wherein, after the build-up welding, in the operationally stressed state in a fully austenitic structural matrix, the welding-plating material forms a sigma phase and other hard particles in the weld material microstructure in a targeted manner.

Exothermic welding molds, weld-metal containing cartridges for such molds, and methods of use are provided. The mold, cartridges, and methods can provide interaction between the cartridge's disk member with the mold, which allows the housing member to be withdrawn from the mold while leaving the disk member and weld-metal in place. The interaction can be a rotational restraint alone, a vertical restraint alone, or combinations thereof. Alternately, the interaction can be an outward pressure on the housing member and/or disk member, a shear force on the housing member and/or disk member, or combinations thereof. The outward pressure on the housing member and/or disk member can alternately be provided without interaction between the disk member and the mold, but rather by the simple application of an internal pressure to the cartridge. The internal pressure can be applied by squeezing the walls of the cartridge and/or by depressing a pusher member.

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 (FACW). In one embodiment, a tubular welding wire includes a sheath and a core, and the core comprises a rare earth silicide component (cerium, lanthanum, or a combination thereof). The core may also comprise an organic stabilizer component, a carbon component, and an agglomerate. The organic stabilizer component may comprise an organic molecule or organic polymer bound to one or more Group I or Group II metals. The carbon component may comprise graphite, graphene, carbon black, lamp black, carbon nanotubes, diamond, or a combination thereof. The agglomerate may comprise oxides of one or more Group I or Group II metals, titanium, and manganese.

Provided is an austenitic stainless steel weld joint that is excellent in polythionic acid SCC resistance and naphthenic acid corrosion resistance, and is also excellent in creep ductility. An austenitic stainless steel weld joint includes a base material and a weld metal. The weld metal has a chemical composition at its width-center position and at its thickness-center position consisting of, in mass %, C: 0.050% or less, Si: 0.01 to 1.00%, Mn: 0.01 to 3.00%, P: 0.030% or less, S: 0.015% or less, Cr: 15.0 to 25.0%, Ni: 20.0 to 70.0%, Mo: 1.30 to 10.00%, Nb: 0.05 to 3.00%, N: 0.150% or less, and B: 0.0050% or less, with the balance: Fe and impurities.

An arc welding solid wire includes: a steel material; and a copper plating layer formed on a surface of the steel material, in which an amount of Cu in the steel material and the copper plating layer is 0.05 mass % to 0.30 mass % with respect to a total mass of the wire, a surface of the wire is coated with 0.05 g to 0.20 g of oil with respect to 1 kg of the wire, and on a surface of the copper plating layer, an arithmetic average roughness Rac in a circumferential direction is 0.25 .Math.m to 1.00 .Math.m, and an arithmetic average roughness Ral in a longitudinal direction is 0.07 .Math.m to 0.50 .Math.m.

Welding wires may include a high alloy metal core comprising greater than about 10.5 percent by weight of the high alloy metal core of a component selected from aluminum, bismuth, chromium, molybdenum, chromium/molybdenum alloy, cobalt, copper, manganese, nickel, silicon, titanium, tungsten, vanadium, or a combination thereof; and a layer surrounding the high alloy metal core, the layer comprising copper or a copper alloy. Welding methods may include applying an electrical current sufficient to convert a welding wire to a molten state to produce a molten weld material, the welding wire comprising: a high alloy metal core comprising greater than about 10.5% of a component selected from aluminum, bismuth, chromium, molybdenum, chromium/molybdenum alloy, cobalt, copper, manganese, nickel, silicon, titanium, tungsten, vanadium, or a combination thereof; and a layer surrounding the high alloy metal core, the layer comprising copper or a copper alloy; and depositing the molten welding material onto a workpiece.

A battery manufacturing method includes: winding positive and negative electrode plates and a separator to form a wound electrode assembly; cutting unwound portions of the positive and negative electrode plates and the separator such that the separator constitutes an outermost layer of the wound electrode assembly when the winding is completed; further winding around the wound electrode assembly the cut unwound portions; fixing a part of a terminal end of the separator in a lateral direction to the wound electrode assembly; and performing heat welding on parts of both lateral ends of an outermost portion of the separator in the wound electrode assembly, which are located above an electrode active material-uncoated portion of the positive or negative electrode plate to fix the lateral ends to the wound electrode assembly.

A wire for gas-shielded arc welding includes, based on a total mass of the wire C: 0.01 mass % or more and 0.10 mass % or less, Si: 0.05 mass % or more and 0.55 mass % or less, Mn: 1.60 mass % or more and 2.40 mass % or less, Ti: 0.05 mass % or more and 0.25 mass % or less, Cu: 0.30 mass % or less, Al: 0.10 mass % or less, P: 0.025 mass % or less, and S: 0.010 mass % or less with the remainder being Fe and inevitable impurities. In addition, the following relationship is satisfied: 0.1≤[Ti]/[Si]≤3.0, where [Si] is the content of Si (mass %) based on the total mass of the wire and [Ti] is the content of Ti (mass %) based on the total mass of the wire.

One embodiment of the present invention relates to a welded member obtained by overlapping portions of two sheets of base metal and performing fillet welding thereon using weld material, and provides a welded member having excellent fatigue strength of welded portion, and a method for manufacturing same, the welded member comprising base metal, a weld bead and root-reinforcing weld metal, wherein the base metal has a tensile strength of 780 MPa, the weld bead has a toe angle of 160 degrees or greater and the weld bead and the root-reinforcing weld metal have a Vicker's hardness of 280-320 Hv and a fatigue strength of 350 MPa or higher.

A projection welding electrode holder has a holder body, a holder barrel, and a coned-disc spring. The holder body is configured for attachment to a welding machine and defines a holder body bore. The holder barrel is carried within the holder body bore and has a holder head that extends therefrom for attachment to a welding electrode. The holder barrel is movable relative to the holder body between a first position, in which the holder head extends from the holder body bore a first distance, and a second position, in which the holder head extends from the holder body bore a second distance, the first distance being greater than the second distance. The coned-disc spring resides within the holder body bore, biases the holder barrel toward the first position, and is compressed by movement of the holder barrel from the first position to the second position.