A solid state welding technique where the faying of the two components to be welded are subject to normal static forces and a shearing oscillating force.
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What frequency is the oscillating force generally applied at?
Between 10 to 75kHz
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What do the shearing forces cause?
The plastic deformation at the interface of the 2 components, they also act to break up the oxide layers.
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What temperature does the weld normally reach?
About 30 to 50% of the melting temperature of the material.
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How is an increased area of pure metal contact formed?
Through progressive shearing and high plastic deformation between asperities that disperses oxides and contaminants.
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What would happen if two surfaces have a really fine finish?
They will slip over one another and enough heat will not be produced through friction to form the weld.
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What would happen if two surfaces are too rough?
The parts would not move and no heat would be generated.
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What is the weld strength equal to?
The base metal
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What can ultrasonic welding be used for?
Suitable for thin section such as foil or plate and is extensively used in electrical connections.
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Other cards in this set
Card 2
Front
What frequency is the oscillating force generally applied at?
Back
Between 10 to 75kHz
Card 3
Front
What do the shearing forces cause?
Back
Card 4
Front
What temperature does the weld normally reach?
Back
Card 5
Front
How is an increased area of pure metal contact formed?
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