Due to the small heat-affected zone, rapid heating concentration and low thermal stress of laser welding, it shows unique superiority in the shell packaging of integrated circuits and semiconductor devices. The following is an introduction to the advantages of laser welding technology for welding precision micro-components.
Sensors or thermostats in elastic, thin-walled, corrugated sheets with a thickness of 0.05–0.1 mm, traditional welding methods are difficult to implement. Traditional arc welding technology has extremely strong penetration and, if used carelessly, can penetrate the corrugated sheet and affect other areas. However, due to the stability of laser welding machines, the laser beam is easy to control and the heat-affected range is very small. This makes it easy to weld corrugated sheets and, as it is not affected by many factors, laser welding is very effective and has been widely used.
The heat input of the laser welding machine can be controlled and reduced, resulting in minimal metallurgical changes in the heat-affected zone. The laser welding machine can be used for micro-welding processing of precision micro-components in mobile phones. The laser output is highly stable, enabling the welding of various metals used in precision micro-components in mobile phones and other electronic products without causing deformation.
1. There is no need for an electrode, so there is no risk of pollution or damage, and machine wear and deformation can be minimised.
2. The four-dimensional table uses an imported servo control system and an optional rotary table to realise spot welding, linear welding, circumferential welding and other automatic welding processes. This makes it applicable to a wide range of high-precision, high-speed applications.
3. Welding is not limited by distance. The device can be switched to transmit the laser beam to multiple workstations for easy automation of high-speed welding.
4. The weld seam quality is high: it is flat and aesthetically pleasing with no porosity, and the toughness of the welded material is at least equivalent to that of the parent material.
5. The laser beam is not subject to magnetic field interference and is easy to align accurately, ensuring high welding precision.
6. It can weld parts that are difficult to access, and it can implement non-contact long-distance welding, which gives it a great deal of flexibility.
The above describes the advantages of using laser welding technology to weld precision micro-components. Laser welding is a fusion of laser technology and the traditional welding industry. It uses a highly efficient, precision welding method that uses a high-energy-density laser beam as a heat source. Due to its unique advantages, it has been successfully applied to the precision welding of micro and small parts.