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传统连铸机实现高拉速、高质量、高作业率需要实施高效化改造。就宣钢二台矩形坯连铸机实施高效化改造存在的困难进行了论证，介绍了高效化改造应达到的目标，提出了实施高效化的基本思路和技术保证及高效化改造的具体内容，最后计算了与高效化改造有关的技术参数，并把改造前后的生产指标进行了对比分析和经济效益分析。实践证明，高效化改造能给钢厂带来巨大的经济效益，传统连铸机实施高效化改造是钢厂今后节能降耗，结构优化的主要途径之一。
Traditional continuous casting machine to achieve high-speed, high-quality, high operating rate need to implement efficient transformation. This paper demonstrates the difficulties existing in Xuanhua two rectangular billet continuous casting machines to implement efficient transformation, introduces the objectives to be achieved in the transformation of high efficiency, puts forward the basic ideas and technical assurance of high efficiency and the specific content of efficient transformation, Finally, the technical parameters related to the efficient reform were calculated, and the production indexes before and after the reform were compared and analyzed. Practice has proved that efficient transformation can bring huge economic benefits to steel mills, the implementation of efficient transformation of the traditional continuous casting machine is the steel mills in the future energy saving, structural optimization, one of the main ways.