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一、导言钢轧辊用在轧机开坯上,对轧辊机械性能要求强度高,合适硬度(跟轧材有关)和耐热疲劳性好。钢轧辊使用过程引起报废的原因是强度、塑性不够而断辊,反复承受冷热作用导致热裂纹,其次是硬度不够磨损快。我国目前轧辊开坯上用70Mn材质较多,其性能对某些轧机并不理想,这是辊耗高的原因。我厂生产ZU75CrMo低合金材质轧辊,经过特殊热处理后,其性能比冶金部规定的机械性能有较大提高。
I. INTRODUCTION Steel roll used in the rolling mill to open the blank, the mechanical properties of the roll high strength, hardness (with rolling related) and thermal fatigue resistance. The reason that the roll of the steel roll is scrapped is that the strength and the plasticity are not enough and the roll is broken. The hot and cold are repeatedly exposed to the hot cracking, followed by the insufficient hardness and fast wear. At present, the material of 70Mn used in the roller blanks in our country is more, and its performance is not ideal for some rolling mills. This is the reason that the roller consumption is high. I plant production ZU75CrMo low-alloy material roll, after a special heat treatment, the performance of the Ministry of Metallurgical Ministry than the mechanical properties have been greatly improved.