1. Spray flux
Completion of the component plug-in circuit boards, embedded in the fixture, by the machine at the entrance to the barge device with a fixed inclination and transfer speed into the wave soldering machine. Then the continuous operation of the chain claw clamp, through the sensor sensor, the spray nozzle along the starting position of the fixture back and forth at a uniform speed spray, so that the circuit board's exposed pad surface, the pad over the hole as well as the surface of the component pins evenly coated with a thin layer of flux.
2. PCB preheating
Into the preheating area, the PCB board welding parts are heated to the wetting temperature, at the same time, due to the components of the temperature rise, to avoid being immersed in the molten solder when subjected to a large thermal shock. Preheating stage, the PCB surface temperature should be between 75 ~ 110 ℃ is appropriate.
3. Temperature compensation
Into the temperature compensation stage, the compensated PCB board in the wave soldering to reduce thermal shock.
4. Turbulent wave soldering machine
The first wave soldering is by the narrow nozzle of the "turbulence" flow velocity, the cure has the shadow of the Yin welding parts have better permeability. At the same time, the turbulent wave of upward jetting force so that the flux gas smoothly excluded, greatly reducing the leakage of welding and vertical underfill defects.
5. Smooth wave soldering
"Smooth" wave soldering flow slower, can effectively remove excessive solder on the terminals, so that all the soldering surface is well-wetted, and can be caused by the first wave of pulling and bridging for adequate correction.
6. Circuit board cooling
Refrigeration system so that the PCB temperature drops dramatically can significantly improve the lead-free solder eutectic production of air bubbles and pad peeling problems.
Company Profile
Zhejiang NeoDen Technology Co., Ltd. has been manufacturing and exporting various small pick and place machines since 2010. Taking advantage of our own rich experienced R&D, well trained production, NeoDen wins great reputation from the world wide customers.
We believe that great people and partners make NeoDen a great company and that our commitment to Innovation, Diversity and Sustainability ensures that SMT automation is accessible to every hobbyist everywhere.