Different plastic materials determine the amount of pressure required during welding. Choosing an appropriate pressure value has a very important effect on the welding result. If the pressure is too high, the vibration energy will be used unreasonably. The frictional force will be too large, the frictional movement between the weldments will be weakened, and the amplitude will even be affected. As a result, the connection area between the weldments will decrease instead of increasing. , The strength of solder joints will also decrease
If the welding pressure is too low, the ultrasonic vibration will not be well transmitted to the weldment, resulting in insufficient friction between the weldment and the welding surface, and a large part of the energy will be consumed on the sliding surface, which will eventually lead to poor welding.
The size of the air pressure during ultrasonic welding can be selected according to the melting point (the higher the melting point, the greater the pressure value), and the size of the plastic part (the larger the size, the greater the pressure value). The pressure value of common ultrasonic welding machine is set to 0.4-0.6MPa.
Air pressure is a factor that the welding machine needs to consider, and normal maintenance is also essential, which can reduce the failure rate and extend the service life of the welding machine. Some general information attributes of the welding machine should be roughly understood, so that it will be more clear during use
