MOPA fiber laser has excellent applications in industrial marking and engraving, not only that, MOPA fiber laser has excellent performance in welding of ultra-thin dissimilar metal materials because of its wide pulse width range, high peak power, high frequency and excellent beam quality, which can meet the needs of high-quality industrial processing, and so it is mainly used in 3C electronics, new energy and other fields.
Welding process guidance:
- Welding laser: MOPA70-200, the thicker the metal material, the higher the material reflectivity, the higher the required laser power;
- Welding method: according to the shape of the welding area, you can choose the spiral line spot welding, jitter alignment welding;
- Welding configuration: vibrating mirror scanning welding, due to the high welding laser power, it is recommended to use fused silica or composite material focusing field mirror, to prevent thermal lens problems caused by welding instability;
- Welding parameters: small and medium pulse width, high frequency, medium-low speed, can be welded firmly, welded surface flat and smooth.
1. Cell phone / computer industry
Laser welding can significantly improve the production level and quality of components in electronic products, there are many places in the cell phone to laser welding, such as cell phone plate shrapnel, antenna shrapnel, camera module shrapnel welding, etc., the use of laser welding to metal shrapnel welded to the conductive bit, can not affect the conductivity of the basis of effective anti-oxidation, corrosion resistance, shrapnel material is generally nickel-plated copper, aluminum plating, steel plating, steel plating, gold plating, etc., the phone case material is generally aluminum plating, copper plating, steel plating, gold plating, etc., the phone case material is generally aluminum plating, copper plating, steel plating etc. The material of the phone case is generally aluminum or aluminum-magnesium alloy.
Using Chuangxin MOPA laser to weld cell phone shrapnel, weld joints are beautiful, welding firmness is stronger.
2. Battery industry
New energy industry has developed rapidly in recent years, including lithium batteries, power battery connectors can be well applied to pulse laser welding, using MOPA laser to different properties of the metal connectors welded to the battery electrodes, so that they are perfectly combined with both strength and does not affect the conductivity. Connection piece materials are generally aluminum, nickel, copper nickel-plated, etc., and most of the battery electrode materials are aluminum or copper.
Advantages:
- Good beam quality, can be used for precision welding;
- Narrow pulse width, small heat-affected zone, suitable for thin welding;
- Wide range of frequency and pulse width adjustable, can meet more material welding;
- Air-cooled, small size, built-in red light, no consumables.
