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一、前言 钢锭模是炼钢生产的主要消耗品,年消耗达70万吨,模耗超过20 Kg/T,是冶金企业急待解决的技术课题。采用薄壁化技术,将某厂2.3 T、壁厚120mm的稀土球铁锭模改造为2.5 T、壁厚100 mm的新锭模获得成功,经济效益达110万元/年。应用导热反问题方法,对铸锭过程中模壁温度分布、特别是无法直接测量的模壁内表面温度及热流进行了分析、计算,为锭模薄壁化技术改造提供了重要的理论根据。
I. INTRODUCTION Steel ingot mold is the main consumable manufactured in steelmaking. The annual consumption is up to 700,000 tons and the die-loss is more than 20 Kg / T, which is a technical issue urgently needed by metallurgical enterprises. The thin wall technology was adopted to transform a rare-earth nodular iron ingot with a thickness of 2.3 T and a wall thickness of 120 mm to 2.5 T and a new ingot with a wall thickness of 100 mm. The economic benefit reached RMB1.1 million / year. The temperature distribution of mold wall, especially the surface temperature and heat flow of mold wall, which can not be measured directly, are analyzed and calculated by using the method of inverse heat conduction problem. It provides an important theoretical basis for the reform of thin mold technology of ingot mold.