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铸钢轧辊一般使用在压下量较大的机架上,故要求铸钢轧辊具备较高的强度、耐磨性及冲击韧性。多年来,开坯车间选用的70Mn铸钢轧辊耐磨性差,特别是轧制矽钢等。中轧机轧辊板孔磨损更为严重,致使再车削困难,影响了钢材质量,缩短轧辊使用周期,辊耗较大。用3Cr13焊补中轧机的轧辊,虽能较少磨损,但总的讲还不理想。上海冶金机修总厂提出新材质的设想—球状石墨铸钢轧辊,简称(球辊)。现将φ500轧机球辊试用情况简述如下:
Cast steel roll generally used in the reduction of the larger rack, it requires the cast steel roll with high strength, wear resistance and impact toughness. Over the years, the 70Mn cast steel roll used in the bloom shop has poor wear resistance, especially for rolled silicon steel and the like. Mill roll plate hole wear more serious, resulting in turning difficult, affecting the quality of steel, shorten the roll life cycle, larger roll consumption. With 3Cr13 welding pad rolling mill, although less wear and tear, but in general is not ideal. Shanghai Metallurgical Machinery Plant put forward the idea of a new material - spherical graphite cast steel roll, referred to (ball roller). Now φ500 mill roller trial situation is summarized as follows: