Branch Snyder Department of International Ltd. Shenzhen-Electronic Technology Co., Ltd. - The Department of Electronic Technology Company is a professional custom single-sided, double-sided, 2-40 storey density multilayer professional supplier, to provide customers with high-precision high quality Shenzhen board, quality assurance, reasonable prices. All components on the PCB have the same temperature at the end of this zone should be, otherwise go to the reflux temperature zone because parts will produce a variety of uneven faulty welding. Usually the active temperature range is generally 120 ~ 150 ℃, if the temperature of the active region is set too high, flux (cream) activation is not enough time, the slope of the temperature curve is incremented upward slope. Although some manufacturers allow the paste activated during some of the increase in temperature, but the ideal temperature curve should be smooth temperature Branch Snyder Department of International Ltd. Shenzhen-Electronic Technology Co., Ltd. - The Department of Electronic Technology Company is a professional custom single-sided, double-sided, 2-40 storey density multilayer circuit board technology professional supplier of electrical conductivity, to provide customers with high-precision, high-quality Shenzhen circuit board, circuit board technology quality assurance features, and reasonable price. Welding roughly divided into preheating, insulation circuit board technology good rate, reflux Shenzhen circuit board technology, cooling four intervals (different BGA rework station work to do slightly different) regardless of lead solder or lead-free solder, solder balls melting stage in the recirculation zone, but different temperatures, a graph can be seen as reflux before a slow warming and heat process. Understand this basic principle, any BGA rework station can be so. Conductive circuit board technology _ Newell Year (online consultation) _ Shenzhen circuit board technology from Shenzhen Electronic Technology Co., Ltd. Newell provided. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) Guangdong Shenzhen, printed circuit board leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Newell create leadership with the staff warmly welcome all inquiries negotiations to create Newell create a better future.