Laser welding will become the next development focus of the industry
Text / Phoenix Nest
In recent years, laser welding machine, as a high-quality, high-precision, low-deformation, high-efficiency and high-speed welding equipment, is becoming an important tool for metal material processing and manufacturing, and it is more and more widely used in automobile manufacturing and other fields. Laser welding is to radiate a high-intensity laser beam to the metal surface. Through the interaction of the laser and the metal, the metal absorbs the laser light and converts it into heat energy to melt the metal and cool and crystallize it to form a weld.
Steel barrel automatic resistance welding machine
This welding method not only has a high degree of automation and fast welding speed, but also can be more convenient for welding of any complex shape. At present, the domestic large-scale enterprises that produce laser welding machines include Huagong Laser, Han Laser, Ming 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 water In fields such as laser welding and laser cutting, the development attitude of a hundred flowers bloomed for a time.
Although compared with traditional welding methods, laser welding machines are expensive, one-time investment is large, and technical requirements are also very high. At present, the application in China's industry is still relatively limited, but it has high production efficiency and easy to realize automatic control Make it very suitable for large-scale production lines and flexible manufacturing.
Traditional welding
Laser high power laser welding machine
Due to the small laser focus spot and high power density of the laser beam, some high melting point and high strength alloy materials can be welded. And because the heat-affected zone of laser welding is small, the material deformation is small, and no subsequent process is required. In the process of use, the laser beam is easy to guide, focus, and change in all directions, and the laser welding has high production efficiency, stable and reliable processing quality, and good economic and social benefits. Various advantages make more and more enterprises begin to use laser welding machines to replace traditional welding.
The traditional welding method takes a long time and the efficiency is low, so in the mid-1980s, laser welding was widely concerned as a new technology in Europe, the United States, and Japan. But to talk about the development of laser welding in China, we have to start in 2002.
On October 25, 2002, China's first professional commercial production line for laser tailor-welded blanks was officially put into operation, and was introduced by Wuhan ThyssenKrupp Zhongren Laser Tailor Welding from TWB of ThyssenKrupp Group in Germany. Since then, Shanghai Baosteel Arcelor Laser Tailor Welding Company and FAW Baoyou Laser Tailor Welding Co., Ltd. have been put into production one after another.
In 2003, the first domestic large-scale strip on-line welding complete equipment provided by Huagong Laser passed the offline acceptance. This equipment integrates laser cutting, welding and heat treatment, making China Huagong Laser the world's fourth enterprise 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 mass-produced products, but it is difficult to do this for welding, because the needs of each customer are so different that it is difficult for laser welding 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 exponentially, and with it, more and more demand for laser welding applications, this situation will change substantially.
Laser marking once occupied 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 began to explode, and cutting applications began to become popular. 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 and the rise of laser cutting, I believe that laser welding will become The next burst in the laser field.
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