黄传辉,刘磊,张宁.偶件表面粗糙度对回转支承隔离体使用性能的影响[J].表面技术,2020,49(9):244-251.
HUANG Chuan-hui,LIU Lei,ZHANG Ning.Effect of Surface Roughness of Counterpart on the Performance of Isolation Block in Slewing Bearing[J].Surface Technology,2020,49(9):244-251 |
| 偶件表面粗糙度对回转支承隔离体使用性能的影响 |
| Effect of Surface Roughness of Counterpart on the Performance of Isolation Block in Slewing Bearing |
| 投稿时间：2019-10-12 修订日期：2020-09-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2020.09.027 |
| 中文关键词: 回转支承 隔离体 表面粗糙度 摩擦磨损 锂基润滑脂 机油润滑 |
| 英文关键词:slewing bearing isolation block surface roughness friction and wear lithium grease oil lubrication |
| 基金项目:国家自然科学基金（51275514）；江苏省重点研发计划项目（BE2016047） |
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| 中文摘要: |
| 目的 掌握偶件表面粗糙度对回转支承隔离体使用性能的影响规律。方法 利用M-2000实验机考察了在2号锂基润滑脂和20#机油润滑条件下，轴承GCr15滚动体表面粗糙度对PA1010、HPb59-1等隔离体使用性能的影响，分析了载荷、速度以及偶件表面粗糙度对摩擦系数、磨损量的影响规律，并观察了磨损表面的微观形貌，探讨了PA1010、HPb59-1等隔离体的损伤机制。结果 随GCr15钢环表面粗糙度增加，摩擦系数、磨损量均呈上升趋势，PA1010摩擦学性能受偶件表面粗糙度的影响程度显著高于HPb59-1。表面粗糙度值相同时，随实验载荷增加，摩擦系数略有降低，但变化不大，磨损量随实验载荷的增加而增长较快。200、400、600 N三种载荷下，PA1010磨损量的平均比值为1∶1.64∶2.44，HPb59-1磨损量的平均比值为1∶2.92∶3.74。20#机油润滑时的摩擦系数低于2号锂基润滑脂润滑，对PA1010而言，平均降低了52.7%左右，对HPb59-1，平均降低了41.8%左右。结论 GCr15偶件表面粗糙度增加引起摩擦系数、磨损量上升，且对PA1010影响更大。润滑剂对磨损量的影响和GCr15钢环表面粗糙度密切相关，表面粗糙度值小时，影响甚微；随着表面粗糙度值增大，润滑剂所产生的影响越来越明显。PA1010、HPb59-1磨损表面均呈现出磨料磨损特征。研究结果为回转支承的设计提供了实验和理论参考依据。 |
| 英文摘要: |
| The work aims to master the influence rules of counterpart surface roughness on the performance of isolation block in slewing bearing. Under the lubrication conditions of No.2 lithium grease and 20# oil, the influence of the surface roughness of bearing GCr15 rolling element on the performance of isolation blocks like PA1010 and HPb59-1 isolators was investigated by M-2000 tester. The influence rules of different loads, speed and surface roughness of counterparts on friction coefficient and wear amount were analyzed. The micromorphology of worn surface was observed and the damage mechanism of PA1010 and HPb59-1 was discussed. With the increase of surface roughness of GCr15 steel ring, the friction coefficient and wear amount increased. The influence of the tribology properties of PA1010 subject to surface roughness of counterpart was greater than that of HPb59-1. Under the condition of same surface roughness, the friction coefficient decreased slightly without much change and the wear amount increased rapidly with the increase of test load. The average wear ratio under 200, 400 and 600 N loads was 1∶1.64∶2.44 for PA1010 and 1∶2.92∶3.74 for HPb59-1. The friction coefficient of 20# lubrication oil was lower than that of No.2 lithium grease, which decreased by about 52.7% for PA1010 and 41.8% for HPb59-1 on average. The increase of counterpart surface roughness for GCr15 causes the raise of friction coefficient and wear amount, and has a greater impact on PA1010. The influence of lubricant on wear amount is closely related to the surface roughness of GCr15 steel ring. The small surface roughness has little effect. With the increase of surface roughness, the influence of lubricant becomes more obvious. All the worn surfaces of PA1010 and HPb59-1 show typical abrasive wear characteristics. The results provide experimental and theoretical reference for the mechanical design of slewing bearing. |
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