Laser welding
In the field of material connection, high power laser welding has developed rapidly, especially in traditional automobile manufacturing and new energy automobile manufacturing. In the future, the demand in aerospace industry, shipbuilding industry, petrochemical industry and other fields will gradually increase, promoting the technological upgrading of related industries.
01 Traditional automobile manufacturing industry
At present, the largest proportion of laser welding industry is in the automobile manufacturing industry, and this situation will not change in the next few years, and the market will continue to maintain huge demand. Laser welding technology includes laser self fusion welding, laser filler wire fusion welding, laser filler wire brazing, remote scanning welding, laser swing welding, etc. Through these laser welding technologies, the accuracy, stiffness and integration degree of the vehicle body can be improved, so as to realize the light weight, energy saving, environmental protection and safety of the vehicle [1]. Modern automobile production usually adopts the mode of automatic production line. No matter which link has a shutdown accident, it will cause heavy losses, which also puts forward high requirements for the stability and reliability of equipment in each production link.
As the core unit of laser welding equipment, the laser needs to have high stability of output power, multi-channel, anti anti high anti high anti high anti high anti reaction ability, etc. Ruike Laser has done a lot of work in this field and has produced stable and reliable welding equipment.
02 New energy automobile manufacturing industry
The new energy vehicle industry is developing rapidly, with steady growth in global and domestic sales. The demand for its core components, such as power batteries and drive motors, is also growing;
Whether it is the manufacture of power battery or driving motor, there is a large demand for laser welding. The main materials of these power batteries, such as square battery, cylindrical battery, soft package battery and blade battery, are aluminum alloy and red copper. The Hair Pin motor is the future development trend of the drive motor. The windings and bridges of this motor are all red copper materials. The welding of these two “high anti reflective materials” has always been a problem. Even if laser welding is used, there are still pain points – weld formation, welding efficiency and welding spatter.
In order to solve these problems, people have carried out a lot of research, including the exploration of welding process, the design of welding joints [2], etc.: by adjusting the welding process and selecting different focus spots, the weld formation can be improved, and the welding efficiency can be improved to a certain extent; Through the design of various unique welding joints, such as swinging welding joints, dual wavelength laser composite welding joints, etc., the weld formation, welding spatter and welding efficiency can be greatly improved. But with the rapid growth of demand, the welding efficiency still can not meet the requirements. The major laser light source companies have introduced adjustable beam lasers through the technical upgrading of lasers. This laser has two coaxial laser beam outputs, and the energy ratio of the two can be adjusted at will. When welding aluminum alloy and red copper, it can achieve efficient and splash free welding effect, fully meeting the current needs of the new energy automobile industry, which will be the mainstream laser in the industry in the next few years.
03 Welding field of medium and thick plates
The welding of medium and thick plates is a major breakthrough direction of laser welding in the future. In the aerospace, petrochemical, shipbuilding, nuclear power equipment, rail transit and other industries, the demand for welding of medium and thick plates is huge. A few years ago, limited by the power, price and welding technology of lasers, the application and promotion of laser welding in these industries is very slow. In recent two years, the demand for industrial upgrading and manufacturing upgrading of China’s industry has become more and more urgent. Improving quality and efficiency is the common demand of all walks of life. Laser arc hybrid welding is considered to be one of the most promising technologies for medium and thick plate welding.
Post time: Nov-08-2022