In the precision equipment manufacturing industry, laser welding machines and ultrasonic welding machines are both common equipment. When many companies purchase welding equipment, they don’t know which equipment to choose. Today, the editor will talk about laser welding machines and ultrasonic welding in detail. machine difference.

In fact, both laser welding and ultrasonic welding technologies have their own characteristics. First, let’s take a look at their special craftsmanship. This article introduces a laser welding machine that uses high-energy laser pulses to locally heat a small area and transfer it to the inside of the material through heat conduction to melt the material and form a specific molten pool. Ultrasonic welding uses high-density energy generated by high-frequency ultrasonic mechanical vibration to produce plastic deformation on the surface of the workpiece, destroy the welding layer under pressure, and make the solder physically connected at room temperature. Thermal conductivity efficiency is relatively good, and it also has certain advantages in material cost.

Laser welding is non-contact welding. Its advantage is that the workpiece does not need to be under pressure, the overall deformation of the workpiece is small, and the micro deformation on the surface of the heat-absorbing coating is also small. Laser welding is suitable for thicker materials. For example, the thickness of aluminum plate is generally 0.4mm, resulting in higher material costs.

                   
                                     (Laser welding)
Ultrasonic welding is a method that uses high-frequency ultrasonic mechanical vibration to generate high-density energy on the surface of the workpiece. Under the action of force, the surface of the weldment is plastically deformed, thereby achieving the physical connection of the weldment. Suitable for ultrasonic welding of thin products. The internationally mainstream copper plate for flat products is usually between 0.12mm and 0.2mm. In order to consider the material cost, some companies now choose aluminum plates and 0.2-0.3mm for ultrasonic welding.
                    
             

Laser welding machine VS ultrasonic welding machine

The ultrasonic welding machine has the advantages of fast speed, energy saving, high fusion strength, good conductivity, no sparks, and near-cold processing. It adopts electronic program control, high power, high efficiency, automatic control, easy operation, and built-in electronic protection circuit, making it safe to use. The work is stable and reliable. The weldment has the characteristics of firm welding surface, high strength, subjective and environmental protection.

Laser welding machine is a new welding method, mainly used for welding thin-walled materials and precision parts. It can realize spot welding, butt welding, lap welding, seal welding, etc. It has an aspect ratio, smaller welding width, smaller heat affected zone, smaller deformation, fast welding speed and smooth and beautiful welding. Processing or simple processing is required after welding. The welding quality is high, there are no pores, the control is accurate, the focus is small, the positioning accuracy is high and the automation is easy.