Abstract：Investigation shows that the main reason of macro carbon segregation in steel bloom is nonhomogeneous distribution of carbon during the solidification of bloom, and severity of nonhomogeneous distribution of carbon is proportion to the carbon content of steel. The standard deviation and range of carbon distribution in various steel grades were normalized the distribution of carbon segregation in 20CrMoH, then the data were analyzed in the same scale. In normal continuous casting, the following casting parameters can improve the carbon segregation of casting bloom, such as casting overheat at 15~25 ℃, the amount of secondary cooling water is 0.35L/kg, stirring torque of mold and final electromagnetic stirring are respectively 18 and 15cN•cm. The normalized standard deviation and range of carbon segregation decreased to below 0.015% and 0.025% after the best combination of parameters were used in production practice.
张广军 张旭东. 连铸工艺对铸坯碳偏析的影响[J]. 中国钢铁期刊网, 2010, 29(3): 43-43.
. Effect of CC process on macro carbon segregation in Steel Bloom. Chinese Journal of Iron and Steel, 2010, 29(3): 43-43.
2010, Vol. 29 
