MOPA fiber lasers have excellent applications in industrial marking and engraving. Moreover, MOPA fiber lasers, with their wide pulse width range, high peak power, high frequency, and superior beam quality, can meet the demands of high-quality industrial processing. Therefore, they also perform exceptionally well in the welding of ultra-thin dissimilar metal materials, primarily applied in the 3C electronics and new energy sectors.
Welding of Dissimilar Metal Materials
Welding Process Guidelines:
- Welding Laser: MOPA70–200. The thicker the metal material and the higher its reflectivity, the higher the laser power required;
- Welding Method: Depending on the shape of the welding area, spiral spot welding or oscillating line welding can be selected;
- Welding configuration: Galvo scanner welding. Due to the high welding laser power, it is recommended to use fused quartz or composite material focusing lenses to prevent thermal lensing issues from causing welding instability;
- Welding parameters: Medium to short pulse width, high frequency, medium to low speed, to achieve a strong weld with a smooth and flat surface.
1. Mobile phone/computer industry
Laser welding can significantly improve the production level and quality of electronic components. In mobile phones, laser welding is widely used in applications such as welding of mid-plate springs, antenna springs, and camera module springs. By welding metal springs to conductive positions using laser welding, oxidation and corrosion resistance can be effectively achieved without compromising conductivity. Spring materials typically include nickel-plated copper, gold-plated aluminum, copper-plated steel, or gold-plated steel. Smartphone casings are usually made of aluminum or aluminum-magnesium alloy.
Using Chuangxin MOPA lasers for smartphone spring plate welding results in aesthetically pleasing weld points and stronger weld integrity.
Mobile phone mid-plate spring
2. Battery industry
The new energy industry has developed rapidly in recent years, and pulse laser welding is widely applied to lithium-ion batteries and power battery connection plates. Using MOPA lasers to weld metal connection plates with different properties to battery electrodes ensures perfect integration, combining strength without compromising conductivity. Connection plate materials are typically aluminum, nickel, or nickel-plated copper, while battery electrode materials are mostly aluminum or copper.
Using Chuangxin MOPA lasers for battery connector welding results in a small heat-affected zone, an aesthetically pleasing weld, and a deeper weld penetration compared to traditional lasers.
Power battery aluminum connector
Lithium-ion battery electrode
3. Other Industries
3C electronic components
Multi-network cable port housing
Heat sink
Automotive parts
