With no-clean flux, preheat temperature should be controlled to what extent it is most appropriate? Practice has proved that the use of free after-clean flux, if based upon conventional preheating temperature (90 ± 10 ℃) to control, there may be adverse consequences occur. The main reason is a no-clean flux is a low solids content, halogen-free flux flux brand, its activity is generally weak, and it can hardly play the role of an active agent to eliminate metal oxides at low temperatures, with preheat temperature increases help solder paste flux, flux gradually began to activate. over the surface of PCB tin solder flux surface must be dry Which is good, you can not have liquid residue flux, when severe oxidation PCB Please make the appropriate pre-treatment, in order to ensure the quality of equipment and preheat weldability, soldering machine should insist that PCB before soldering has 80 ℃ -120 ℃ preheat party. Cookson Electronics Assembly Information Ministry announced the low-solids wave solder flux, and further expand its lineup of EF series of environmental flux. Suitable for both tin-lead processes, and also can be applied to the new lead-free process. This no-clean alcohol-based flux provides the industry's best reliability. The main component of solder flux _ Fu Jie (certified) _ Zhumadian flux provided by the Zhengzhou City Fujie Soldering Materials Co., Ltd. Zhengzhou City Fujie Soldering Materials Co., Ltd. (www.fujiehanxi.com) (www.fujiehanxi.com) is Zhengzhou, electronics, electrical products processing leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness , the maximum meet customer needs. In FUJIE solder leadership with the staff warmly welcome all inquiries negotiations to create FUJIE solder a better future.