Laser welding will become the development focus of the next laser industry
In recent years, as a high-quality, high-precision, low-deformation, high-efficiency, and high-speed welding equipment , laser welding machines are becoming important tools for metal material processing and manufacturing, and they are increasingly widely used in automotive manufacturing and other fields. Laser welding is to radiate a high-intensity laser beam to the metal surface. Through the interaction between the laser and the metal, the metal absorbs the laser light and converts it into thermal energy to melt the metal and cool it to crystallize to form a weld.
This welding method not only has a high degree of automation and fast welding speed, but also can more easily carry out welding of any complex shape. At present, the large-scale enterprises producing laser welding machines in China include Huagong Laser , Han’s Laser , Ming Ra Laser, Hongshi Laser, etc., especially in the past two years, with the continuous improvement of laser technology, more and more companies have begun to test the water In the fields of laser welding and laser cutting , all kinds of flowers have been developed in an instant.
Although compared with traditional welding methods, laser welding machines are expensive, have a large one-time investment, and have high technical requirements. At present, their application in China’s industry is relatively limited, but they have high production efficiency and are easy to implement automatic control. It is very suitable for large-scale production lines and flexible manufacturing.
Traditional welding
Huagong Laser High Power Laser Welding Machine
Because the laser beam has a small laser focal spot and high power density, it can weld some high melting point and high strength alloy materials. And because the heat-affected zone of laser welding is small, the material deformation is small, and subsequent processing is not required. In the process of use, the laser beam is easy to guide and focus, realizing the transformation in all directions, and the laser welding has high production efficiency, stable and reliable processing quality, good economic and social benefits. All kinds of advantages make more and more enterprises start to use laser welding machines instead of traditional welding.
The traditional welding method takes a long time and has low efficiency, so in the mid-1980s, laser welding as a new technology received widespread attention in Europe, the United States, and Japan. But to talk about the development of laser welding in our country, we have to start from 2002. On October 25, 2002, China’s first professional commercial production line for laser tailored blanks was officially put into operation. It was introduced by Wuhan ThyssenKrupp Zhongren Laser Tailored Welding from German ThyssenKrupp Group TWB. Since then, Shanghai Baosteel Arcelor Laser Welding Co., Ltd. and FAW Baoyou Laser Welding Co., Ltd. have been put into production successively. In 2003, China’s first large-scale strip online welding complete equipment provided by Huagong Laser passed offline acceptance. This equipment integrates laser cutting, welding and heat treatment, making China Huagong Laser the fourth company in the world capable of producing such equipment.
Laser welding is different from laser marking and cutting. Its biggest feature is customization. Laser marking and laser cutting can produce large-scale and batch products, but welding is difficult to achieve this, because the requirements of each customer are different, making laser welding difficult to achieve mass production. However, with the advent of the Internet and personalized needs, small and medium-sized system integrators and automation companies have grown geometrically, and with them, more and more laser welding applications have been required, and this situation will change substantially.
Laser marking once accounted for more than half of the entire laser processing market. However, from the development data of the laser industry in 2016, the laser cutting machine market has begun to explode, and cutting applications have begun to spread. At the current domestic and international exhibitions, it can be clearly seen that more and more laser companies gradually occupy a larger share. After experiencing the rise of laser marking sales and laser cutting, I believe that laser welding will The next breaking point in the laser field.