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.

Novel High-Entropy Alloy (HEA) compositions are particularly suited to welding applications. The mixtures contain at least the elements nickel, manganese, cobalt, chromium, vanadium, molybdenum, and iron. The % weight of the constituents varies in accordance with the detailed description contained herein, with tolerances in the range of ±4% for major alloying elements and ±1% for minor alloying elements. The mixture may also contain a small amount of Aluminum, Titanium, and Boron with a tolerance in the range of +/−1% or, more preferably, +/−0.5% In accordance with the invention, the compositions above may be integrated into HEA welding products using cored wire and welding electrode manufacturing techniques, preferably starting with vacuum melted rolled alloys. One manufacturing process uses the compositions as an alloyed strip formed around the appropriate ground/crushed alloys to make commercially viable fabricated welding products.

A flux core wire for a welding method, having a tubular wire sheath, a wire core of flux powder, which is surrounded by the tubular wire sheath, wherein the wire sheath and the wire core have a composition such that during the welding a melt of CuSn.sub.12Ni.sub.2 materialises.

A composition for welding or brazing aluminum comprises silicon (Si) and magnesium (Mg) along with aluminum in an alloy suitable for use in welding and brazing. The Si content may vary between approximately 5.0 and 6.0 wt %, and the Mg content may vary between approximately 0.15 wt % and 0.50 wt %. The alloy is well suited for operations in which little or no dilution from the base metal affects the Si and/or Mg content of the filler metal. The Si content promotes fluidity and avoids stress concentrations and cracking. The Mg content provides enhanced strength. Resulting joints may have a strength at least equal to that of the base metal with little or no dilution (e.g., draw of Mg). The joints may be both heat treated and artificially aged or naturally aged.

A method of titanium wire additive manufacturing is disclosed. The method may comprise mixing a plurality of powdered metals comprising titanium, iron, vanadium, and aluminum to produce a powder blend, sintering the powder blend to form a billet, performing a wire forming operation to produce a worked wire, heat treating the worked wire to produce a heat treaded wire, loading the heat treated wire into a wirefeed additive manufacturing machine, and producing a metallic component from the heat treated wire. The titanium may be a titanium hydride powder.

A method for producing a feedstock wire is produced from a first metal strip and at least one further metal strip by roll forming, wherein in particular the first metal strip and the at least one further metal strip are made of differing metals, preferably of differing meals having differing yield points, wherein a jacket, which in the final shape completely surrounds the at least one further metal strip in the circumferential direction, is formed from the first metal strip in a plurality of passes by roll forming using a plurality of roll stands, and wherein, first, exclusively only the first metal strip is formed to a preliminary shape in a plurality of passes using a first group of roll stands and, thereafter, the first metal strip and the at least one further metal strip are jointly formed to the final shape in a second group of roll stands.

Disclosed are an aluminum-coated blank, a manufacturing method thereof, and an apparatus for manufacturing the same. The blank includes two or more aluminum-coated steel sheets connected together by a joint, each of the steel sheets including: a base steel sheet including 0.01-0.5 wt % of carbon, 0.01-1.0 wt % of silicon, 0.5-3.0 wt % of manganese, greater than 0 but not greater than 0.05 wt % of phosphorus, greater than 0 but not greater than 0.01 wt % of sulfur, greater than 0 but not greater than 0.1 wt % of aluminum, greater than 0 but not greater than 0.001 wt % of nitrogen, and the balance of iron and other inevitable impurities; and a coating layer including aluminum and formed on at least one surface of the base steel sheet.

The present invention relates to an Ni-based alloy which is excellent in terms of wear resistance and high-temperature corrosion resistance and which includes 0.3≤C≤1.0 mass %, 36.0≤Cr≤50.0 mass %, and 3.0≤Al≤7.0 mass %, with the balance being Ni and unavoidable impurities, and relates to an Ni-based alloy product made of the Ni-based alloy according to the present invention, and methods for producing the Ni-based alloy product.

A manufacturing process of a high-strength aluminum alloy wire/strip includes the following steps: A. subjecting an alloy to smelting and spray forming to obtain a high-strength Al—Zn—Mg—Cu aluminum alloy blank; B. subjecting the blank to semi-solid upset forging to form an ingot; C. subjecting the ingot to hot extrusion and then to vacuum annealing to form a coiled material; D. subjecting the coiled material to hot continuous rolling to obtain a wire blank; and E. subjecting the wire blank to solution heat treatment, multiple stretching treatments, annealing, and multiple continuous stretching treatments to obtain the high-strength aluminum alloy wire/strip. The high-strength aluminum alloy wire/strip has the characteristics of fine and compact grains, uniform structure, clear grain boundaries, no precipitates, and no layered structure affecting the stretching performance.

A tubing assembly is provided that can comprise a plurality of tubes or lumens that can be disposed within a head of a peristaltic pump. The tubing assembly can provide a flow rate or volume capacity that is generally equal to or greater than that achieved with a comparable prior art tube while operating at higher pressures than that possible using the prior art tube. Further, in accordance with some embodiments, the tubing assembly can achieve a longer working life than a comparable prior art tube, and the load on the pump motor can be reduced such that the pump life is increased and/or a larger pump motor is not required to achieve such advantageous results.