BOWE Broadway FB401 is a kind of support for Al Solder flux using the new brazing, the solvent is a white noodle-like canned product, even fine particles, and broad application, with the aluminum electrode (common BW4047, BW4043) at 450 ℃ ~ 620 ℃ temperature range of active brazing aluminum and aluminum alloy, (BOWE Broadway) FB401 can effectively remove the appearance of insoluble oxides of aluminum parts, aluminum brazing promote overland flow in the weld, spread, full of the weld spot, looks bright, high mechanical strength, in particular, is suitable for all kinds of aluminum alloy, aluminum parts, aluminum brazing flame. welding preparation: Before welding, the oil should be part surfaces, dust, etc. clean. weld treatment: FB401 weld corrosion residue on the role of parent material, should be promptly cleaned with warm water.