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What effect does the pressure change have on the effect of ultrasonic welding ?

In the process of practical consumption, not all plastic materials can stop welding. Plastics that can be welded by ultrasonic wave belong to thermoplastics. As long as thermoplastics with the same or similar molecular structure can stop welding and chemical separation between molecules on the welding surface, the closer the parent material is, the better the welding effect. The better the fruit. The following figure is a comparison of welding compatibility of some common plastics. We also need to think about the factors that affect the quality of welding to get better welding results. When stopping welding, pressure, time and heat absorption (melting amount) are the three elements to ensure welding quality.

There are some methods to judge the ultrasonic transducer:1. The normal working resistance of the ultrasonic transducer is about: greater than or equal to 20M ohm, megaohmmeter test.2. Measurement if open circuit is considered to be problematic.3. Observe whether the transducer is blackened by arc i

What is an ultrasonic horn (horn)We know that when an object vibrates, it makes a sound. Scientists refer to the number of vibrations per second as the frequency of the sound, and its unit is Hertz. The frequency of sound waves that we can hear in human ears is 20 to 20,000 Hz. When the vibration fr