Ultrasonic Welding
Ultrasonic welding will join similar or dissimilar metal by the introduction of high frequency vibratory energy (frequency being 20,000 to 60,000 Hz) into overlapping metals into the area joined. No flux or filler metals are used, no electrical current passes through the weld metal, and usually no heat is applied. Ultrasonic welding parts to be joined are clamped together between a welding tip and 2 supporting member under low-static pressure. High frequency vibratory energy is then transmitted into the weld area for a brief interval. This process produces a sound bond without an arc or melting weld metal and in the absence of filler metal or fluxes.
The ultrasonic process can be utilized in spot welding.
The maximum thickness by these ultrasonic welding processes ultrasonically may very from 0.83 to 2.5 mm depending upon the metal.
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