Cr12轧辊深冷处理工艺的实验研究  

Research on Experiment of Deep Cryogenic Treatment Process of Cr12 Rollers

作　　者：丁玉朋[1] 于瑞媛[1] 孙义[1] 焦璐颖[1] 张长春[1] 阎红娟[1] 

机构地区：[1]北方工业大学机电工程学院,北京100144

出　　处：《北方工业大学学报》2012年第3期52-56,共5页Journal of North China University of Technology

基　　金：北京市本科生科学研究计划项目(A1006)

摘　　要：采用正交试验方法研究了Cr12轧辊深冷处理工艺.分析了不同工艺参数对轧辊硬度和耐磨性的影响.使用电子扫描显微镜(SEM)观察材料显微组织;使用X射线衍射仪(XRD)分析材料的晶格尺寸和残留奥氏体的含量.实验结果表明:深冷处理促使残留奥氏体向马氏体转变,并在马氏体的基体上析出碳化物颗粒,这是Cr12轧辊硬度和耐磨性提高的主要原因.A study on the deep cryogenic treatment process of Cr12 rollers is carried out with the orthogonal experimental method. The effect of operational parameters on the hardness and wear resistance of Cr12 rollers is analyzed. The microstructure of the material is studied by SEM and the size of the lattice and the amount of retained austenite are measured by XRD. The analytical result shows that the deep cryogenic treatment prompts the retained austenite to transform into martens- ite, and carbide particles to dispers on the martensite matrix. The result explains the key reasons of improving the hardness and wear resistance of Cr12 rollers.

关 键 词：正交实验 深冷处理 耐磨性 马氏体 

分 类 号：TG156.91[金属学及工艺—热处理]