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Surfacing repair welding wire weld to the workpiece or wire surface oil, oxide film is particularly sensitive, if the surface exists oil, oxide film, arc or can not be caused, or arc can not be stable combustion. Therefore, before welding must be welded joints and surfacing repair welding wire surface cleaning, remove metal surface oxidation film, moisture, dirt, grease and other sundries to ensure the arc and arc stable combustion.Welding Wire
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.Welding Wire
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
Electric spark discharge coating cold welding Machine special welding wire, used in the normal temperature of surfacing or welding, welding after a second characteristics is the wire temperature of not more than 40 degrees Celsius, continuous welding not ultra-high 80 degrees Celsius. Mainly used for some heat-resistant parts repair, welding stoppage, temperature generally controlled at about 40 degrees Celsius, wall thickness in 0.4-0.5 mm, the highest is not higher than 100 degrees Celsius.Welding Wire
With thin steel ribbon rolled into a circular or profiled steel pipe, 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. 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.Welding Wire
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
