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Ultrasonic Welding Detection Techniques

发布者:灵科超声波 发布时间:2018/10/27
The energy direction of the ultrasonic wave is a longitudinal wave, which should be four routes. If the energy of the ultrasonic HORN (upper die) is from the lateral side, it will cause insufficient or unstable welding strength. This is called " The phenomenon of transverse wave. So what is the cause of the shear wave phenomenon?
Causes of the shear wave phenomenon:
1. Design problem of ultrasonic HORN length, width, and energy expansion ratio.
2. The problem of the opening of the ultrasonic HORN guiding groove.
3. Problems with ultrasonic HORN material organization (generally granular structure of aluminum-titanium alloy).
4. Ultrasonic HORN vibration frequency, machine oscillation system, and electronic control box cannot be connected in one line (matching problem).
5. The more the ultrasonic HORN is square, the easier it is to generate transverse waves.
◎ Ultrasonic transverse wave phase:
1. When the amplitude meter has no load (before the product is touched), the current is high (generally over 1.0).
2. When the sound wave is detected, the HORN itself shakes, the sound emitted, and the surrounding airflow will abnormally cause lateral fluctuations.
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