Ultrasonic Welding Horns
Blade Horn
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A Blade horn has a rectangle for both input and output. Both the
Input and Output width are the same. The Input depth is more than the
output depth.
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Gain Formula |
| Calculate Gain |
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The length of the horn will be 1/2 wave length.
Length is calculated by Dividing the speed of sound traveling through
the material by the frequency of resonance divided by 2. To calculate
the resonant length of a 20khz horn divide 196,000 by
20,000 to get the full wave length then divide by 2 to get the half
wave length.
Speed of sound through Aluminum is 196,000 inch/sec.
4.9=(196,000/20,000)/2
The normal length of a 20khz Aluminum Horn is between 5.1 to 4.8
inches.
Gain of a ultrasonic horn is function of the mass above the nodal
point to the mass below the nodal point. The gain of a Blade
horn is the Input depth divided by the Output depth.
2.25=2.250/1.000 |
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