A wire comprising a wire core with a surface, the wire core having a coating layer superimposed on its surface, wherein the wire core includes: (a) pure silver consisting of silver and further components; or (b) doped silver consisting of silver, at least one doping element, and further components; or (c) a silver alloy consisting of silver, palladium and further components; or (d) a silver alloy consisting of silver, palladium, gold, and further components; or (e) a doped silver alloy consisting of silver, palladium, gold, at least one doping element, and further components, wherein the individual amount of any further component is less than 30 wt.-ppm and the individual amount of any doping element is at least 30 wt.-ppm, and the coating layer is a single-layer of gold or palladium or a double-layer comprised of an inner layer of nickel or palladium and an adjacent outer layer of gold.

In the flux applying device, a control portion controls conveying rollers or the like so that thickness of flux applied to solder is controlled. The winding roller rotates so that the solder is conveyed at the conveying speed. The drawing-out roller applies any load (back tension) to the solder backward along the conveying direction of the solder when drawing out the solder. The solder is conveyed at the predetermined speed and dipped into the flux tank containing flux. The solder is pulled up from the flux tank at the conveying speed vertically. By pulling up the solder from the flux tank at the constant conveying speed vertically, the interfacial tension acts on the solder 9a and the flux, so that the flux having a uniform thickness according to the conveying speed remains on the surface and back surface of the solder.

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). A disclosed tubular welding wire has a sheath and a core, and the tubular welding wire includes an organic stabilizer component, a rare earth component, and a corrosion resistant component comprising one or more of: nickel, chromium, and copper.

A hybrid preform component including a plurality of elongated metallic cores and a coating paste is provided. The coating paste envelops the plurality of elongated metallic cores. The coating paste includes a first material having a first melting point, a second material having a second melting point, and a binder. A method for treating a component is also provided. The method includes the step of mixing a second material, a first material, and a binder to make coating paste. The method further includes the step of coating the plurality of cores using the coating paste to form a coated rod assembly. The method further includes the step of compressing the coated rod assembly to envelop the coating paste to the plurality of cores and form a preform component having a near net shape. The method further includes the step of sintering the preform component to form a pre-sintered preform.

A hybrid article is disclosed including a sintered coating disposed on and circumscribing the lateral surface of a core having a core material and a greater density than the sintered coating. The sintered coating includes more than about 95% up to about 99.5% of a first metallic particulate material including a first melting point, and from about 0.5% up to about 5% of a second metallic particulate material having a second melting point lower than the first melting point. A method for forming the hybrid article is disclosed including disposing the core in a die, introducing a slurry having the metallic particulate materials into a gap between the lateral surface and the die, and sintering the slurry. A method for welding a workpiece is disclosed including the hybrid article serving as a weld filler.

A copper-tin brazing wire and a preparation method and use thereof are provided. A copper-tin brazing wire includes a plurality of copper wires each having a composite metal layer on a surface thereof; the copper-tin brazing wire includes, in parts by weight, 75-84 parts of Cu, 20-25 parts of Sn, and 0.4-0.5 parts of P; and the composite metal layer includes Cu, Sn, and P, in which a mass ratio of Cu, Sn, and P is (45-55):(46-56):(0.5-1.5).

An alloy includes a matrix that includes an amount of high-melting-temperature superalloy between about 30% and 95% by weight and an amount of low-melting-temperature superalloy between about 0% and 70% by weight. The alloy also includes an amount of a ceramic reinforcement material between about 2% and 50% by volume, dispersed in the matrix.

The present invention provides the following: a covered flux which has a low chromium content and which can improve the fatigue strength of a weld in additional welding; and a covered electrode. The covered flux used for a covered electrode has a composition that contains, relative to the total mass of the covered flux, 35-55 mass % of a metal carbonate (in terms of CO2), 10-30 mass % of a metal fluoride (in terms of F), and 8.5-20 mass % of Mn and/or 7.5-20 mass % of Ni. In addition, the covered electrode is obtained by coating an iron-based core wire with this covered flux.

A flux applying device for applying flux to a surface of solder, wherein the flux applying device includes: a dipping means that applies the flux to the surface of the solder by dipping the solder into the flux; a load applying means that applies a predetermined load to the solder, the load applying means being provided at a upstream side of the dipping means; a constant speed conveying means that conveys the solder at a predetermined speed with being under load by the load applying means; a drying means that dries the solder to which the flux is applied; a cooling means that cools the dried solder; a conveying speed measurement means that measures a conveying speed of the solder; and a control means that controls the conveying speed of the solder.

An aluminum alloy wire rod comprising 0.1-1.0 mass % Mg; 0.1-1.0 mass % Si; 0.01-1.40 mass % Fe; 0.01-0.50 mass % Zr; 0.000-0.100 mass % Ti; 0.000-0.030 mass % B; 0.00-1.00 mass % Cu; 0.00-0.50 mass % Ag; 0.00-0.50 mass % Au; 0.00-1.00 mass % Mn; 0.00-1.00 mass % Cr; 0.00-0.50 mass % Hf; 0.00-0.50 mass % V; 0.00-0.50 mass % Sc; 0.00-0.50 mass % Co; and 0.00-0.50 mass % Ni, a Mg/Si ratio being greater than 1, wherein a dispersion density of an Mg.sub.2Si compound having a particle size of 0.5 m to 5.0 m is less than or equal to 3.010.sup.3 particles/m.sup.2, and in the sectional structure, a concentration of each of Mg and Si other than a compound is less than or equal to 2.00 mass %.