Page 36 - 《摩擦学学报》2021年第6期

第 41 卷 第 6 期 摩 擦 学 学 报 Vol 41 No 6
2021 年 11 月 Tribology Nov, 2021

DOI: 10.16078/j.tribology.2020186

载荷和转速对铜合金材料摩擦

磨损性能的影响

1
1*
2
1
樊文欣 , 郭佩剑 , 原 霞 , 王玉帅 , 魏 悦 1
(1. 中北大学 机械工程学院, 山西 太原 030051;
2. 中北大学 机电工程学院, 山西 太原 030051)
摘 要: 采用MMW-1A摩擦磨损试验机，对比研究干摩擦条件下，载荷和转速对QSn7-0.2、CuZn31Si1和Cu9Ni6Sn三
种铜合金材料摩擦磨损性能的影响，采用扫描电子显微镜(SEM)和能谱仪(EDS)分析磨损表面形貌及元素成分，讨
论了QSn7-0.2、CuZn31Si1和Cu9Ni6Sn的磨损机理. 结果表明：当载荷和转速增大时，平均摩擦系数和磨损率为
Cu9Ni6Sn＜CuZn31Si1＜QSn7-0.2. 当载荷增大时，QSn7-0.2的磨损机理由磨粒磨损逐渐加剧转变为黏着磨损；
CuZn31Si1的磨损机理由塑性变形磨损加重并伴有轻微的磨粒磨损转变为磨粒、黏着磨损；Cu9Ni6Sn的磨损机理由
轻微的磨粒、塑性变形磨损转变为疲劳磨损. 当转速增大时，QSn7-0.2的磨损机理由塑性变形磨损加重转变为黏着
磨损，整个过程伴随着轻微的磨粒磨损；CuZn31Si1的磨损机理由磨粒磨损转变为塑性变形磨损；Cu9Ni6Sn的磨损
机理由轻微的磨粒磨损转变为磨粒磨损与塑性变形磨损共存.
关键词: 滑动轴承; QSn7-0.2; CuZn31Si1; Cu9Ni6Sn; 摩擦系数; 磨损机理
中图分类号: TH117.1 文献标志码: A 文章编号: 1004-0595(2021)06–0821–12

Effects of Load and Speed on the Friction and Wear
Properties of Copper Alloys

1*
2
1
1
FAN Wenxin , GUO Peijian , YUAN Xia , WANG Yushuai , WEI Yue 1
(1. School of Mechanical Engineering, North University of China, Shanxi Taiyuan 030051, China
2. School of Mechatronic Engineering, North University of China, Shanxi Taiyuan 030051, China)
Abstract: With the gradual increase in the power of diesel engines in China, higher requirements were put forward for
the friction and wear performance of the sliding bearing materials of key parts in its harsh working environment. The dry
friction and wear properties of three typical sliding bearing copper alloy materials QSn7-0.2, CuZn31Si1, Cu9Ni6Sn,
which are currently and widely used in high-power diesel engine connecting rod heads, were compared and studied, and
their wear mechanisms were further discussed and analyzed. By using the MMW-1A friction and wear testing machine,
the pin-on-disk experiment were carried out at room temperature and without lubrication. The test duration was 60 min
(including a 10-minute running-in period). The load were 18 N, 36 N, 72 N, 108 N and speed were 0.12 m/ s, 0.24 m/s,
0.36 m/s, 0.48 m/s. The effects of load and speed on the dry friction and wear properties were studied. Dry friction and
wear properties of the sliding bearing copper alloy materials were discussed on three aspects, i.e. average friction
coefficient, wear rate, and wear surface morphology and composition analysis. By increasing the load, the average
friction coefficient of QSn7-0.2 first increased and then decreased, the average friction coefficient of CuZn31Si1 gradual

Received 2 September 2020, revised 8 January 2021, accepted 18 January 2021, available online 28 November 2021.
*Corresponding author. E-mail: fanwx@nuc.edu.cn, Tel: +86-13703589699.
The project was supported by the Key R&D Program International Science and Technology Cooperation Project of Shanxi province
(201903D421035).
山西省重点研发计划国际科技合作项目(201903D421035)资助.