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The wire is used as a filler metal or as a conductive wire for welding. In the gas welding and tungsten gas protection arc welding, the wire used as filler metal; in submerged arc welding, electroslag welding and other melting gas protection arc welding, the welding wire is both filled with metal, but also conductive electrodes. The surface of the wire is not coated with an oxidative flux.Welding Wire Most of the welding wire belongs to this category, including carbon steel wire, low alloy structural steel wire, alloy steel wire, stainless steel wire and non-ferrous metal wire. Common welding wire: SKD11> 0.5 ~ 3.2mm HRC 56 ~ 58 welding cold steel, metal stamping die, cutting, cutting tools, forming mold, the workpiece hard surface with high hardness, wear resistance and high toughness of the argon electrode, Before the first warm preheating, or easy to produce cracks. 63 degrees blade edge welding wire> 0.5 ~ 3.2mm HRC 63 ~ 55, mainly used in welding knife mold, hot for high hardness with mold, hot forging the total mold, hot die, screw mold, wear hard surface, high speed steel , Knife repair. SKD61> 0.5 ~ 3.2mm HRC 40 ~ 43 Welding zinc, aluminum die-casting mold, with good heat resistance and resistance to cracking, hot stamping die, aluminum and copper hot forging die, aluminum die-casting mold, with good heat resistance Grinding, crack resistance. General hot die casting mold is often tortoise shells, most of which is caused by thermal stress, but also due to surface oxidation or die-casting raw materials caused by corrosion, heat treatment to adjust the appropriate hardness to improve its life, hardness is too low or too high Be applicable.Welding Wire anti-bursting wire> 0.5 ~ 2.4mm HB ~ 300 high hardness of the steel joint, hard surface production of the bottom, the welding of the cracks. High-strength wire, nickel-chromium alloy with high composition, for the prevention of rupture of the underlying welding, filling the base, Rally strong, and can repair the steel crack welding reconstruction. 718> 0.5 ~ 3.2mm HRC 28 ~ 30 large household appliances, toys, communications, electronics, sports equipment and other plastic products die steel. Plastic injection mold, heat-resistant mold, corrosion-resistant mold, machinability, good erosion, good surface gloss after grinding, long service life. Preheating temperature 250 ~ 300 ℃ after the hot temperature of 400 ~ 500 ℃, for multi-layer welding, the use of reverse welding welding, less prone to poor fusion and other defects. Some alloys, such as cobalt chrome tungsten alloy, can not forging, rolling and wire drawing, and made by casting method. It is mainly used for manual surfacing of the workpiece surface to meet the special requirements such as oxidation resistance, wear resistance and corrosion resistance at high temperatures. The use of continuous casting and liquid extrusion can produce up to several meters of cobalt chromium tungsten wire for automatic wire tungsten gas arc welding to improve the welding efficiency and surfacing quality, but also to improve working conditions. Cast iron welding sometimes use casting wire.Welding Wire
