SMT Lead Free Wave Soldering Machine XMW-350
What is a wave soldering machine?
Wave soldering machines are used to solder both conventional through-hole and surface mount components on a printer circuit board. Motorized lead and lead-free solder pots offer flexibility and quick change. These machines also can increase through-hole speed with dual-wave soldering capabilities.
Smooth wave peak without rotating component: because the three-phase asynchronous induction electromagnetic pump produces linear thrust rather than the rotating thrust of the blade of the mechanical pump, the wave peak is smooth, the tin tank liquid level disturbance is small, and oxidation is slight.
Stable wave peak: due to the induction pump technology, combined with the voltage stabilization principle, when the grid voltage fluctuates by 10%, the voltage on the induction pump fluctuates by nearly 3%, so the wave peak is stable.
High efficiency: because there is no pulsating magnetic field component of three-phase asynchronous induction electromagnetic pump, the efficiency is greatly improved. The developed prototype shows that the width of the wave peak is 400mm and the height of the wave peak is 40mm. And the three-phase induction pump's magnetization current is only about 5A, such working conditions ensure that the three-phase asynchronous induction pump works in the state of low heat and low current load, to ensure the long-term life reliability. No moving parts, no wear and tear, truly realize the maintenance free, eliminating the regular maintenance link.
Welding process of wave soldering machine: insert the component into the corresponding component hole → precoat flux → preheat (temperature 90-100 'C, length 1-1.2m) → wave soldering (220-240' C) → cooling → remove the excess plug-in feet → inspection.
Single/double wave peak automatic welding machine adopts three-phase asynchronous induction pump development technology, after using comparison, we get the following results:
Because had the characteristic of the vibration wave perturbation overlay, can be effectively out of SMT soft brazing resulting from thermal decomposition of flux and paste agent in the shelter of the gas of brazing area, eliminate skip welding and SMC, SMD shadow area, in meeting the requirements of the SMT soft brazing, at the same time, due to the perturbation wave superposition didn't make the wave soldering have a stronger ability to climb a hole, Improve welding reliability and yield.
Crest welder refers to the soft soldering material will melt tin alloy (lead), electric pump or electromagnetic pump flow into the design requirements of solder wave, can be formed by the injection of nitrogen to solder pool, make the PCB with components in advance through the solder wave, components and PCB solder welding end or pin of the mechanical and electrical connection between soft soldering. There are many types of wave soldering systems, depending on the geometry of the wave used by the machine.
Crest welder three-phase asynchronous induction pump is used to implement the maintenance free, save the solder, reducing the oxidation slag volume, convenient to obtain wide wave the requirements and high peak, with the deepening of the application, crest welder with three-phase asynchronous induction electromagnetic pump is the development trend of the future, it will be in the developing process of electronic assemblies, have the effect of promoting, especially in the SMT in the conventional process, Form a good SMT application prospects.