The development of continuous casting technology in ChinaChina is one of the earliest countries in the world to research and apply continuous casting technolog
The development of continuous casting technology in China
China is one of the earliest countries in the world to research and apply continuous casting technology. Since the 1950s, continuous casting technology research began, and in the early 1960s, it entered the stage of industrial application of continuous casting technology. However, from the late 1960s to the late 1970s, continuous casting technology almost stagnated. Statistics in 1982 showed that the world's average continuous casting ratio was about 30%, while my country's continuous casting ratio was only 6.2%. After the 1980s, my country's continuous casting technology entered a new period of development, introducing a number of advanced-level billets, slabs and horizontal continuous casting machines from abroad. In the mid-1980s, my country owned the first full-continuous steel casting plant, Wuhan Iron and Steel's second steelmaking plant. In recent years, my country's continuous casting technology has developed rapidly. By 2005, all provinces (cities, autonomous regions) except Hainan, Ningxia, and Tibet had continuous casting production, and the continuous casting ratio had reached 97.5%.
my country is one of the countries that developed thin slab continuous casting technology earlier. It has made major breakthroughs in the three core technologies of thin slab continuous casting mold, immersion nozzle, and mold flux. Development of double arc, oval and cone Shaped cavity curved thin slab continuous casting mold, and used in industrial production.
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Harm of too high temperature: when molten steel out of cooper mold, the billet shell is thin and easy to break out; The accelerated erosion of refractory can ea
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1. The barrier function (mainly completed by the liquid slag layer) isolates the contact between air and molten steel, blocks the secondary oxidation of molten
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In continuous casting, low corrosion resistance often occurs, which directly leads to uneven composition and will eventually affect the smelting quality. In or