Design considerations for ultrasonic welding
Ultrasonic welding refers to the use of high-frequency vibration waves to be transmitted to the surfaces of two objects to be welded. Under pressure, the surfaces of the two objects are rubbed against each other to form a fusion between molecular layers. Plastic welding refers to the welding of two independent plastic parts into one body. Ultrasonic welding is suitable for all thermoplastics, amorphous plastics and semi-crystalline plastics. It is also suitable for non-woven fabrics, such as thermoplastic fabrics, polymer materials, coated paper and mixed fabrics.
The general applications of ultrasonic welding are:
Automobile: The welding of large and irregular workpieces such as bumpers, front and rear doors, lamps, brake lights, etc. can be implemented through computer program control.
Home appliances: It can be used for portable fluorescent lampshades, steam ironing doors, TV housings, recordings, transparent panels of sound machines, power rectifiers, washing machine dehydration tanks and other home appliances that need to be sealed, firm and beautiful through appropriate adjustments.
Packing: The sealing of the hose, the connection of special strapping.
Toys: Thanks to the use of ultrasonic technology to make the products clean, efficient and firm, it eliminates the use of screws, adhesives, glues or other auxiliary products, reduces production costs, and enhances the competitiveness of enterprises in the market.
Electronics: The use of automation program design enables users to achieve large-scale production, while ensuring product quality requirements.
Design considerations for ultrasonic welding
1. Ultrasonic welding methods: such as spot welding, embedding, riveting, welding, etc. In products composed of multiple materials such as MP3 or mobile phones, other welding processes cannot be satisfied except for ultrasonic welding;
2. Advantages of ultrasonic metal welding:
1) The welding material does not melt, and the metal is not fragile.
2) The conductivity is good after welding, and the resistivity is very low or almost zero.
3) Low requirements on the welding metal surface, both oxidation and electroplating can be welded.
4) The soldering time is short, without any flux, gas, or solder.
5) Welding without sparks, environmental protection and safety.
6) Mold and single-piece cost are low in process cost
7) Suitable for small batch or large batch
8) The tightness of welded joints is very high
9) There is a fast and efficient production cycle (no more than 1 second)