English
Some alloys, such as cobalt-chromium-tungsten alloys, cannot be forged, rolled, and wire-shaped, but are made with casting methods. It is mainly used for manual surfacing of workpiece surface to meet special performance requirements such as anti-oxidation, abrasion resistance and corrosion resisting at high temperature. The use of continuous pouring and liquid extrusion can produce a number of meters of cobalt-chromium-tungsten welding wire for automatic tungsten electrode gas shielded arc welding, in order to improve welding efficiency and the quality of surfacing layer, but also improve working conditions. Cast iron welding wire is sometimes used to repair.Welding Wire
With thin steel strips rolled into a circular or profiled steel tube, filled with a certain component of the powder, the tension made of slotted flux-cored wire, or filled with steel tube to pull the powder made of seamless flux-cored wire (see FIG). With this welding wire weld The high efficiency, good adaptability to the steel, trial-production cycle is short, thus its use and use of the scope of expanding. This kind of welding wire is mainly used for carbon dioxide gas shielded welding, submerged arc welding and electroslag welding. The powder composition in flux cored wire is generally similar to that of electrode. The flux cored wire, which contains slag, gas-making and ARC-stabilized components, does not need to be protected when welding, and the self shielded flux-cored wire is suitable for the construction of large-scale welded structural engineering.Welding Wire
The manufacture process control of flux cored wire is very rigorous, because the molten metal comes from the steel sheet Pian and the flux contains the ingredient, before the manufacture size and the chemical ingredient all need to check in detail to ensure the quality. Because the internal space of welding material is limited, the size of flux particles is more important, the formation of particles like the nest-like combination, flux elements are uneven. Most of the flux-cored wires are rolled into a U-shaped section by a flat sheet of thin metal strips, filled in a U-shaped metal groove, and then the final sealing roll step, the flux tightly rolled in the tube-shaped wire coil into a tubular wire and then after a series of pulling action to become the final need of the wire, this pull action can also be filled with the flux evenly fixed in the wire.Welding Wire
