In recent years, with the increasingly fierce competition in the consumer electronics markets, the electronic product manufacturing industry has also put forward higher requirements for products. Traditional processing methods easily lead to unstable product quality, parts melting, difficulty in forming normal nuggets, and low yield. The emergence of laser processing technology can quickly solve these problems for electronic product manufacturers. In the production process of high-end electronic products, laser processing plays an important role in the volume optimization and quality improvement if of products, making the products lighter, thinner and more stable. It is reported that about 70% of the processing and manufacturing links of electronic products are applied to laser technology ( more than 20 different processes) and related manufacturing equipment. At present, laser precision spot welding head is mainly used the shell of electronic products, shielding case, USB interface, conductive patch, etc, with small thermal deformation, precise 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. Based on the results of many experiments, Chuangxin Laser Welding Engineers summarized in the manufacturing process of consumer electronics, which method should be used for laser precision spot welding of different materials such as high-reflective materials, metal sheets, and dissimilar material. Get a better welding effect.

There are two shapes of precision spot welding tips: sector and conical. The conical shape can imporve the rigidity of the bumps  and prevent premature crushing when the electrode pressure is high; It can be also reduce the splash caused by excessive current density. But sector shape bumps are usually used. In order to prevent the extruded metal from remaining around the bumps and forming gaps between the plates, bumps with annular overflow grooves are sometimes used. In multi-point projection welding, the inconsistent height of the bumps will cause the imbalance of the current at each point and make the joint strength unstable. Therefore, the height error of the bump should not exceed ±0.12mm. If the preheat current is used, the error can be increased. 

There are two shapes of precision spot welding tips: sector and conical. The conical shape can imporve the rigidity of the bumps  and prevent premature crushing when the electrode pressure is high; It can be also reduce the splash caused by excessive current density. But sector shape bumps are usually used. In order to prevent the extruded metal from remaining around the bumps and forming gaps between the plates, bumps with annular overflow grooves are sometimes used. In multi-point projection welding, the inconsistent height of the bumps will cause the imbalance of the current at each point and make the joint strength unstable. Therefore, the height error of the bump should not exceed ±0.12mm. If the preheat current is used, the error can be increased.