The significance of using electromagnetic pumps in lead-free wave soldering

With the advent of the lead-free revolution, China, as a manufacturing country, has a huge demand for lead-free electronic equipment. Wave soldering machine instead of mechanical pump electromagnetic pump has become an inevitable trend, there is a great market demand, the development and application of this product has become the top priority of China's electronic equipment manufacturing industry. Lead-free wave soldering the significance of the use of electromagnetic pump 1, tin furnace oxidation greatly reduced than the mechanical pump to reduce more than 50%. (1) There are no rotating parts in the tin stove, the tin surface is calm and the contact area with the air is small, which reduces the oxidation of the liquid solder in the furnace. (2) The tin wave is close to the laminar flow, the turbulence component is small, and the oxidation of the solder caused by the waterfall effect is reduced. 2, tin wave formation, good welding quality. (1) smooth wave solder surface tin flow, the solder can be a steady infiltration of the pad, is conducive to the formation of solder joints, solder within the stress is small, not easy to peel the pad. (2) Tin-wave surface with micro-vibration audio superimposed, increased welding of solder when the ability to climb the hole to ensure a solid and reliable solder joints. (3) The tin-wave flow is parallel to the power chamber of the tin bath, and both sides of the tin-bath wave are symmetrical in wave height. However, the flow direction of the centrifugal mechanical pump is perpendicular to the power chamber of the tin bath and the adjustment of the wave height causes the tin-wave to go up and down by one level, The application of mechanical pumps. 3, a special electromagnetic pump as a brazing material jet power pump, the use of the external magnetic field and the flow of molten solder in the dual role of force to force the solder to determine the direction of the left hand to determine the direction of flow and jet hollow wave. 4, in accordance with the principles of fluid mechanics, solder can make wet solder PCB components, to achieve a solid welding. Hollow wave and PCB contact length of only 10 ~ 20mm, contact time is only 1 ~ 2s, which can reduce thermal shock. 5, maintenance-free, easy to use, long life. (1) no rotating parts, tin furnace without mechanical wear, mechanical failure greatly reduced. Some electromagnetic pump life of up to ten years. (2) reduce the amount of oxidation, greatly reducing the time to clean up the furnace slag. 6, tin furnace can be miniaturized. At present, the smallest tin melting tin 5KG can produce tin wave, which is not achieved by the traditional mechanical pumps, welding equipment will certainly have a profound impact on the design and manufacture. Extended reading: China Construction Water Exhibition ptc exhibition motor top ten brands pump valve pipe fittings Show Information Industry Association Water Expo (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: He Duanhui (QQ / WeChat: 2355962924) http: // mj .liuti.cn / (Service Hotline: 400-6030-811)