科研之友
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摘要
The integrated technologies for 360mmx450mm bloom caster and its application results at PISCO (Panzhihua Iron & Steel Co.) were presented. The internal defects of continuously cast bloom such as central porosity, central segregation and center line cracks, were greatly improved by optimizing secondary cooling scheme, mold electromagnetic stirring (M-EMS) and dynamic soft reduction process. The surface depression defect was remarkably decreased by designing proper mold structure, cooling scheme and mold flux. The production practice in the past two years showed that the rate of central porosity, segregation, shrinkage and crack ratings <= 1.0 was up to 99.03%, the center segregation index of carbon was in the range from 1.01 to 1.05 (mean value of 1.03), and the surface defect-free rate of bloom was up to 99.54%. These achievements have provided PISCO important technology supports to optimize the steel product structure, and to improve the production of high quality, property, and value added products.
- 出版日期2008-10
- 单位东北大学
