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Welding technology and development

As the traditional basic technology and technology of manufacturing industry, welding technology has not been applied in industry for a long time, but its development is very rapid. In a short period of several decades, welding has made important contributions to the development of industrial economy in many industrial sectors. It has been widely used in various important fields, such as aerospace, shipbuilding, automobile, bridge, electronic information, ocean drilling and high-rise building metal structure. Welding has become an important manufacturing technology and an important professional discipline of material science, and created the connection A new chapter in technology. With the development of science and technology, welding has developed from simple component connection method and blank manufacturing method to a production method of accurate size products in the manufacturing industry. Therefore, to ensure the stability of welding product quality and improve labor productivity has become an urgent problem to be solved in the development of welding production. Here are some examples.

In the mechanical manufacturing industry, many large-scale blanks produced by integral casting and forging have been changed into welded structures, which greatly simplifies the production process and reduces the cost. Many cutting-edge technologies, such as aerospace and nuclear power, can not be realized without welding structure. The position of welding in the whole industry can also be judged from the fact that the welding structure produced by the world's major industrial countries accounts for about 45% of the steel output every year. The reason why the welding structure develops so rapidly is because it has a series of advantages.