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Application of welding materials in various fields
With the development of China's construction industry and the promotion of urbanization process, the amount of steel consumed in the construction industry is huge every year. According to statistics, in 2006 the construction steel structure manufacturing capacity is about 16 million tons, including industrial workshop steel structure, steel structure of high-rise building, long-span steel structure construction, Municipal Stadium Steel Structure and steel structure, the equivalent of 25 - 350 thousand tons of welding material consumption. It is predicted that all kinds of construction steel structure will be 26 million tons in 2010, and 40 - 500 thousand tons of welding materials will be needed accordingly. Predict that all kinds of building steel structure in 2015 will consume more than 40 million tons of steel. And use in the construction process of reinforced concrete structure, steel and wire materials will consume more than 100 million tons per year, in addition to a small number of large diameter steel by cold extrusion sleeve connection, the rest mainly adopts steel electroslag pressure welding and welding rod electric arc. J422 welding flux, such as HJ431, 10 to 130 thousand tons, and welding rod 500 thousand tons of welding rod, etc. used for steel slag pressure welding every year. Therefore, construction steel and corresponding welding materials will be a hot spot in the future.