论文部分内容阅读
用无限冷硬铸铁或者是中级冷硬铸铁来作为热轧机的轧辊材料。由于冷硬铸铁的冷硬层厚薄不均匀,无法保证表面硬度,耐磨性差,寿命短;另外,冷铸轴辊在使用过程中又很容易沾粘氧化铜,影响轧件的表面质量。因此说,用冷硬铸铁作为热轧机轧辊材料,一度成了我厂生产力发展及产品质量提高的障碍。一九七七年六月,厂、所的“三结合”小组,先后走访了上海金属喷镀厂,上海冶金研究所、上海阀门厂等十几个厂、所,听取了有关技术的介绍,对各种耐热耐磨金属
With unlimited chilled cast iron or medium-sized chilled cast iron as a hot rolling mill material. Due to the uneven thickness of the chilled layer of chilled cast iron, the surface hardness, wear resistance and short life can not be guaranteed. In addition, the chilled cast roll can easily stick to the copper oxide during use, affecting the surface quality of the rolled workpiece. Therefore, using chilled cast iron as hot rolling mill roll material has once become an obstacle to the development of our factory productivity and the improvement of product quality. In July 1977, the “Three-in-One” group of factories and institutes visited more than 10 factories such as Shanghai Metal Plating Factory, Shanghai Metallurgy Research Institute and Shanghai Valve Factory successively. After listening to the introduction of relevant technologies, A variety of heat-resistant wear-resistant metal