The role and application of the air knife in the electronics industry

Let us to know the role and application of the air knife in the electronics industry.

As followings:

1. The role of the air knife is to blow off the extra loose incense on the PCB board and to prevent the fire from dripping on the preheating area to the preheat. The air of the air knife can be adjusted freely with the size of the rosin. Auxiliary liquid rosin wet PCB requires the metal terminal of the tin. Increases the wet area. In addition, some stoves have hot air knives, which is the second wave of peaks to remove short -circuit.

2. Another role of the air knife is to blow the welding agent sprayed on the feet of the parts into a uniform layer. To put it simply, in the use of wave peak furnaces, the main role of "air knife" is to blow off the excess welding agent with PCB board surface and make the welding aid evenly coat on the PCB parts.

3. Under normal circumstances, the tilt angle of the air knife should be around 10 degrees; if the "air knife" angle is adjusted unreasonable, it will cause too much PCB surface welding, or the coating will not be uniform. In the heat pipe, it affects the life of the heating pipe, and it will affect the smoothness of the PCB surface after welding, and may even cause the adverseness of the tin of some components.

4. It should be noted that the angle of the air knife installation can be located when debugging the machine. In the process of use, the repair and maintain do not make random change. If there is a change, communicate with our professional and technical personnel.