Aluminum alloy is widely used in various welded structural products due to its light weight, high strength, good corrosion resistance, non magnetism, good formability and good low-temperature performance. The structural weight can be reduced by more than 50% by using aluminum alloy instead of steel plate for welding. At present, laser welding machine is widely used in aviation, aerospace, automobile, power battery, machinery manufacturing, ships, doors and windows, chemical industry, household goods and other industries.
Laser welding machine technology of aluminum alloy is a new technology developed in recent ten years. Compared with traditional welding technology, it has the characteristics of strong function, high reliability and high efficiency. It has the advantages of high power density, low total heat input, large penetration of the same heat input, small heat affected zone, small welding deformation, high speed, easy industrial automation, etc., especially for heat treated aluminum alloys. It can increase the processing speed and greatly reduce the heat input, thereby improving the production efficiency and welding quality. When welding high-strength and thick aluminum alloy, the traditional welding method can not achieve single pass penetration at all. However, when laser deep penetration welding forms a deep keyhole, the keyhole effect can be realized
Advantages of laser welding machine aluminum alloy.
1. High energy density, low heat input, small thermal deformation, narrow melting zone and heat affected zone and large melting depth.
2. High cooling rate leads to fine weld structure and good joint performance.
3. Laser welding machine does not use electrodes, reducing the working hours and costs.
4. The shape of the part to be welded is not affected by electromagnetism and does not generate X-ray.
5. Laser welding machine can weld the metal materials inside the closed and transparent objects.
6. The laser can be transmitted over a long distance with optical fiber, so that the process adaptability is good. The automation and precision control of the welding process can be realized with the help of computers and manipulators.
