摘要
通过对合金成分、显微组织和耐磨性的定量分析,对比了两种球墨铸铁(QT1和QT2)和40Cr钢的刚轮摩擦磨损性能。结果表明,QT1和QT2基体组织分别为珠光体、针状铁素体和残留奥氏体,两者石墨球尺寸细小且圆整度较高。QT1和QT2球墨铸铁的磨损位置较为集中,起伏波动小,最大磨痕深度分别为3.7μm和2.6μm,而40Cr钢多为深浅不一的犁沟,起伏波动大,最大磨痕深度为7.6μm。与40Cr钢相比,两种球墨铸铁具有良好的耐磨性和更低的摩擦因数,国内谐波减速器企业可采用球墨铸铁作为刚轮材料代替40Cr钢。
Friction behaviors of two nodular cast irons(QT1 and QT2)and 40Cr steel used for domestic circular gear were studied by quantitative analysis of alloy composition,microstructure and wear resistance.The results show that for the QT1 and QT2 cast irons,the matrix is composed of pearlite,retained austenite and acicular ferrite,while the spheroidal graphite has very high nodularity and fine size.The worn positions of the QT1 and QT2 cast irons are concentrated with small fluctuations,and the maximum worn surface depths are 3.7μm and 2.6μm respectively.The wear morphologies of the 40Cr steel are furrows with varying depths and large fluctuations,and the maximum depth is 7.6μm.Compared to the 40Cr steel,the QT1 and QT2 cast irons have excellent wear performance and lower friction coefficient.Domestic harmonic reducer enterprises can use nodular cast iron as circular gear material instead of the 40Cr steel.
作者
邵洙浩
杨大伟
吴咏锦
刘钊
赵亮
Shao Zhuhao;Yang Dawei;Wu Yongjin;Liu Zhao;Zhao Liang(Beijing Institute of Aeronautical Material,Beijing 100095,China;School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing CTKM Harmonic Drive Co.,Ltd.,Beijing 101318,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2024年第1期47-52,共6页
Heat Treatment of Metals
关键词
刚轮
球墨铸铁
40CR钢
耐磨性能
circular gear
nodular cast iron
40Cr steel
wear resistance
