At present, laser precision spot welding head is mainly used in the shell of electronic products, shielding case, USB interface, conductive patch, etc., with small thermal deformation, accurate and controllable action area and position, high welding quality, it can realize welding of heterogeneous materials, and is easy to realize automation and other advantages. However, when welding different materials, different welding methods need to be adopted. According to the experimental result of many times, laser welding engineers concluded that in the production and manufacturing process of consumer electronics, high reflective materials, metal sheets, what kind of laser precision spot welding head should be used for different materials such as heterogeneous materials to obtain better welding effect. Laser precision spot welding head method of high reflective material. When welding high reverse materials such as aluminum and copper, different welding waveform has a great influence on the welding quality. Using the waveform with a front spike, it can break through the high reflectivity barrier, and the instantaneous peak power can quickly change the state of the metal surface, so that the temperature rises to the melting point, thus reducing the reflectivity of the metal surface, improve energy utilization. In addition, due to the fast heat conduction speed of copper, aluminum and other materials, the appearance of solder joints can be optimized by using the slowly decreasing waveform.

The spot welding head process is to use solder joints to connect two or more sections of equal thickness or unequal thickness to form a joint. Spot welding heads generally use lap joint and flange joints.When designing the structure of a spot welding head, it is necessary to consider the reachability of the electrode, the margin, the amount of overlap, the assembly gap of the parts, the spot distance, the indentation and the indentation, the different plate thickness, the strength of the solder joint, etc.

Butt welding head It is divided into upper and lower parts. When welding, the object to be welded is located in the center of the upper and lower parts. The current passes through the object to be welded, and heat is generated on the object to be welded. Sometimes the heat is generated mainly through the object to be welded and the touch surface of the welding head. See which part of the current loop has greater resistance. In the current loop, if the resistance of that part is large, then the heat mainly occurs in that part. Therefore, in the butt welding, the resistance of the welding head is very important. Micro welding head The micro-spot welding head is the corresponding welding head of the micro-electronic spot welding machine. Its characteristic is that the welding head and the welding machine have formed a loop. The current passes through this loop, and the heat is generated at the upper end of the welding head. The welding object does not automatically heat up. The welding head touches the welding object and instantly transfers heat to the welding object, melting the welding object and welding it to another touching welding object.