控轧控冷工艺对钎杆用22CrNi3Mo钢耐磨性能的影响

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英文篇名：Effect of Controlled Rolling and Cooling Process on Wear Resistance of 22CrNi3Mo Steel for Drill Rod 作者：徐士新 ; 余伟 ; 李舒笳 ; 孙齐松 英文作者：XU Shixin;YU Wei;LI Shujia;SUN Qisong;Shougang Research Institute of Technology;Institute of Engineering Technology,University of Science and Technology Beijing; 关键词：钎杆用钢 ; 终轧温度 ; 冷却方式 ; 耐磨性能 英文关键词：steel for drill rod;;finish rolling temperature;;cooling method;;wear resistance 中文刊名：SJGY 英文刊名：Hot Working Technology 机构：首钢技术研究院;北京科技大学工程技术研究院; 出版日期：2017-10-09 17:23 出版单位：热加工工艺 年：2017 期：v.46;No.473 基金：“十二五”国家科技支撑计划资助项目(2012BAE03B01) 语种：中文; 页：SJGY201719009 页数：5 CN：19 ISSN：61-1133/TG 分类号：44-48

摘要

为了改善钎杆用22Cr Ni3Mo钢的耐磨性能,提高其使用寿命,通过光学显微镜、扫描电镜、单轴拉伸试验、磨损试验等方法研究了终轧温度及轧后冷却方式对其耐磨性能的影响。结果表明,采用轧后空冷工艺时,随终轧温度的降低,试样耐磨性能与硬度规律保持一致,呈逐渐升高趋势;采用轧后空冷-炉冷工艺时,随终轧温度的降低,试样耐磨性能与块状残余奥氏体含量规律相反,呈先降低后增加的趋势;轧后直接空冷工艺比轧后空冷-炉冷工艺获得的钎杆用钢耐磨性能更佳。
        In order to improve the wear resistance and increase the service life of the 22 Cr Ni3 Mo steel for drill rod,the effects of finish rolling temperature and cooling method after rolling on wear resistance of the steel were studied by optical microscope,scanning electron microscope,uniaxial tension test and wear test.The results show that,when using air cooling after rolling,with the decrease of final rolling temperature,the wear resistance and hardness of the samples are consistent,showing a rising trend;when using the air cooling-furnace cooling process,with the decrease of final rolling temperature,the law of wear resistance of the samples is contrary to that of the retained austenite contents,showing a trend of decreasing firstly and then increasing;for wear resistance of drill steel,the air cooling process is better than the process of air cooling-furnace cooling after rolling.

引文

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