English
Tungsten electrode welding with basic flux types are as follows:
A halogen type compound
Early tungsten electrode welding with flux is mainly developed by the former Soviet Union and for welding titanium alloy, formed a fluoride and chloride-based solder coating series, the type of flux can 7mm thick titanium straight slope butt welded into a weld, its biggest drawback is the toxicity of the flux component, it is not easy to apply and promotion.
Second, the type oxides and fluorides
Tungsten electrode welding with flux for welding stainless steel, carbon steel when its content to be converted to oxides and fluorides or purely dominated by the oxide. One kind of flux ingredient used in Japan to 25% SiO2-7% TiO2-35% Ca0-20% CaF2-2% Al2O3-4% Fe0-7% MnO: US recently developed by the LFX-SS7 solder oxides. According to information it is estimated using the filler wire solder coating does not limit the thickness of a single channel welded stainless steel should be about 8mm, the maximum does not exceed 10mm. Currently, the most successful is Barton Welding Institute developed for carbon steel flux coating of the flux allows 12mm thick steel plate welded into a butt weld (all-position welding), keyhole effect occurred during welding, 25mm thick double welded butt welding steel plates welded into two, and submerged arc welding efficiency after melting polar gas shielded welding, may become a substitute technology.
