Advantages Of Ultrasonic Welding Over Laser Welding
Ultrasonic welding and laser welding are two commonly used welding methods in the industry, so what are the advantages of using ultrasonic technology to weld compared to laser welding?
Ultrasonic welding is the use of high-density energy generated by ultrasonic high-frequency mechanical vibration to produce plastic deformation on the surface of the workpiece and destroy the surface layer under pressure, so that the welded metal is physically connected at room temperature. Although ultrasonic welding will destroy about 3% of the film layer, because it is a continuous non-melting welding, the heat conduction efficiency is relatively good. At the same time, ultrasonic welding has certain advantages in terms of material cost. Ultrasonic welding is suitable for thin products. The copper plate of mainstream flat products in the world is generally between 0.12mm and 0.2mm. In order to consider the material cost, some enterprises now choose aluminum plates and ultrasonic welding choose 0.2mm. -0.3mm is enough. Laser welding is suitable for thick materials. For example, the thickness of aluminum plate is generally selected to be 0.4mm, resulting in higher material cost.
The advantages of ultrasonic metal welding are that the welding material does not melt, the metal characteristics are not fragile, the welding time is short, the fusion strength is high, and it is close to cold processing; but it will destroy about 3% of the heat-absorbing layer, and the welded metal should not be too thick (generally ≤ 5mm). It is an advantage for flat-panel solar heat-absorbing plate welding), and because it is a continuous non-melting welding, the heat conduction efficiency is relatively good. Some people have done experiments. Under the same working conditions, the heat conduction efficiency of ultrasonic welding products is higher than that of laser welding. 3% or so.
The strength of laser welding solder joints is poor, and the solder joints are easy to break when the hot and cold alternation is frequent or external force is applied. In ultrasonic metal welding, the two objects to be welded are overlapped by vertical pressure, and then combined into a solid-state connection by ultrasonic vibration and pressure. Welding through the ninety-degree vertical bending test still no fracture phenomenon. Therefore, ultrasonic metal welding is better than laser welding.
Ultrasonic metal spot welding machine is used for the same type of metal welding, and can perform single-point and multi-point short-strip welding for thin and thin materials of copper, silver, aluminum, and nickel non-ferrous metals. Welding of various shapes such as tabs.
Ultrasonic metal spot welding machine adopts electronic program control, high power, high efficiency, automatic control, easy operation, built-in electronic protection circuit, safe use, stable and reliable work.
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