When the temperature reaches 100 ℃, the active substance was released into the metal oxide rapid response. In addition, no-clean flux is very high solvent content (about 97%) preheat temperature is less than the flux of Zhengzhou, the solvent is not sufficiently volatile, when the weldment into the tin bath, the flux due to rapid evaporation of solvent use, will make splashes of molten solder to form solder balls or pads actual temperature decrease adverse joints. Free cleaning process also requires tighter control of the process parameters of the welding process, including welding temperature, welding time, PCB and PCB pressed tin depth transmission angle. It should be based on a different type of process parameters no-clean flux, adjust the wave soldering equipment, ability to obtain a satisfactory no-clean welding results. There are some corrosion of the substrate. Reduce electrical conductivity, migrate or shorted. Flux uses _ _ FUJIE solder flux provided by the Zhengzhou City Fujie Soldering Materials Co., Ltd. Zhengzhou City Fujie Soldering Materials Co., Ltd. (www.fujiehanxi.com) (www.fujiehanxi.com) strong, credible, in Zhengzhou, Henan electronics, electrical products processing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead FUJIE solder into the brilliant and you work for a better future!