Ultrasonic welding principle
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- 发布时间:2020-09-02
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(Summary description)Ultrasonic welding principle: ultrasound acting on the thermoplastic plastic contact surface, will produce tens of thousands of times per second high-frequency vibration, which reaches a certain amplitude of high-frequency vibration, through the upper weld to transmit ultrasonic energy to the welding area, due to the welding area that is the intersection of the two welding acoustic resistance, so there will be a local high temperature.
Ultrasonic welding principle
(Summary description)Ultrasonic welding principle: ultrasound acting on the thermoplastic plastic contact surface, will produce tens of thousands of times per second high-frequency vibration, which reaches a certain amplitude of high-frequency vibration, through the upper weld to transmit ultrasonic energy to the welding area, due to the welding area that is the intersection of the two welding acoustic resistance, so there will be a local high temperature.
- 分类:Company News
- Author:
- 来源:
- 发布时间:2020-09-02
- 访问量:0
Ultrasonic welding principle: ultrasound acting on the thermoplastic plastic contact surface, will produce tens of thousands of times per second high-frequency vibration, which reaches a certain amplitude of high-frequency vibration, through the upper weld to transmit ultrasonic energy to the welding area, due to the welding area that is the intersection of the two welding acoustic resistance, so there will be a local high temperature. And because of the poor thermal conductivity of plastic, a moment can not be timely distribution, gathered in the welding area, resulting in the rapid melting of the contact surface of the two plastics, coupled with a certain pressure, so that the fusion into one. When the ultrasonic waves stop working, let the pressure last for a few seconds, so that it solidifies and forms a strong molecular chain, to achieve the purpose of welding, welding strength can be close to the strength of the raw material. Ultrasonic plastic welding depends on three factors: the amplitude of the transducer head, the pressure applied and the welding time, etc. The welding time and head pressure can be adjusted, and the amplitude is determined by the transducer and the amplitude. The amplitude is determined by the transducer and the variable amplitude rod. These three quantities interact with a suitable value, the energy exceeds the appropriate value, the amount of plastic melting is large, the weld is easy to deform; if the energy is small, it is not easy to weld firmly, the added pressure can not be too large. The best pressure is the product of the welded part of the edge length and the best pressure per 1mm ultrasonic metal welding principle: ultrasonic metal welding principle is the use of ultrasonic frequency (more than 16KHz) of mechanical vibration energy, connecting the same metal or a special method of dissimilar metals. Metal in ultrasonic welding, neither to the workpiece current, nor to the workpiece to apply high-temperature heat source, only under static pressure, the frame vibration energy into the workpiece friction work, deformation energy and limited temperature rise. The metallurgical bond between the joints is a solid state welding without melting of the base material. Therefore, it effectively overcomes the phenomenon of spatter and oxidation produced by resistance welding. Ultrasonic metal welding machine can be used for single point welding, multi-point welding and short strip welding of copper, silver, aluminum, nickel and other non-ferrous metals in thin wire or sheet materials. It can be widely used in the welding of silicon lead, fuse piece, electrical lead, lithium battery pole piece and pole lug.