石墨/SA533GrB钢端面的摩擦磨损性能  

Friction and Wear Performance of Graphite/SA533GrB Steel End Surface

作　　者：李彬彬 王文东[1,3] 王飞 黎阳[2] LI Binbin;WANG Wendong;WANG Fei;LI Yang(Shanghai Research Institute of Materials Co.,Ltd.,Shanghai 200437,China;School of Energy and Materials Engineering,Shanghai Polytechnic University,Shanghai 200433,China;Shanghai Key Laboratory of Application and Evaluation of Engineering Materials,Shanghai 200437,China)

机构地区：[1]上海材料研究所有限公司,上海200437 [2]上海第二工业大学能源与材料工程学院,上海200433 [3]上海市工程材料应用与评价重点实验室,上海200437

出　　处：《热加工工艺》2024年第24期111-115,120,共6页Hot Working Technology

基　　金：上海经济和信息化委员会项目(XTCX-KJ-2022-57)。

摘　　要：为改善核电压力容器设备与其支撑结构件之间的摩擦磨损性能,保证核电压力容器的安全,避免因金属之间干摩擦而导致的严重磨损,研究了石墨材料与金属SA533GrBCL1摩擦磨损性能。采用两种石墨(GP1、GP2)经过机加工制备成圆环试样,与SA533GrBCL1钢环组成摩擦副,研究了不同载荷和速度对其摩擦磨损性能的影响。结果表明:GP1型高纯石墨综合摩擦磨损性能优于GP2型浸树脂石墨材料;GP1型石墨在不同载荷和转速条件下,摩擦系数和比磨损率较为稳定,摩擦系数小于0.2,比磨损率较小。GP2型浸树脂石墨在低转速时摩擦系数和比磨损率较低,在高转速时摩擦系数波动较大。GP2型石墨在交变应力下产生磨粒磨损,出现掉块甚至破碎现象。石墨在SA533GrBCL1钢环摩擦表面形成的转移膜与载荷和速度密切相关。GP1型高纯石墨在SA533GrBCL1钢环摩擦表面形成的转移膜相对较为均匀稳定;GP2型浸树脂石墨在SA533GrBCL1钢环摩擦表面形成的转移膜受载荷和速度影响较大,高载荷、高速度条件下,转移膜不稳定。两种石墨与SA533GrBCL1钢环的磨损机制主要表现为磨粒磨损。In order to improve the friction and wear performance between nuclear reactor pressure vessel equipment and its supports,ensure the safety of nuclear reactor pressure vessels,and avoid severe wear caused by dry friction between metals,the friction and wear performance of graphite material against metal SA533GrBCL1 was studied.The two kinds of graphite(GP1,GP2)were machined into ring specimens,which were combined with SA533GrBCL1 steel rings to form friction pairs.The effects of different loads and speeds on the friction and wear performance were studied.The results show that the comprehensive friction and wear performance of GP1 high-purity graphite is better than that of GP2 resin impregnated graphite material;GP1 graphite exhibits relatively stable friction coefficient and specific wear rate under different load and speed conditions,the friction coefficients are less than 0.2 and the specific wear rates are lower.GP2 resin impregnated graphite exhibits lower friction coefficients and specific wear rates at low rotational speeds.At high rotational speeds,the friction coefficients fluctuate greatly.GP2 graphite produces abrasive wear under alternating stress,resulting in chipping and even fragmentation.The transfer film formed by graphite on the friction surface of SA533GrBCL1 steel ring is closely related to load and velocity.The transfer film formed by GP1 type high-purity graphite on the friction surface of SA533GrBCL1 steel ring is relatively uniform and stable;the transfer film formed by GP2 resin impregnated graphite on the friction surface of SA533GrBCL1 steel ring is greatly affected by load and speed,under high load and high speed conditions,the transfer film is unstable.The wear mechanism of two types of graphite against SA533GrBCL1 steel ring mainly manifestes as abrasive wear.

关 键 词：石墨 摩擦 磨损 转移膜 

分 类 号：TB333.1[一般工业技术—材料科学与工程]