牙轮钻头Ti(C,N)基金属陶瓷密封配副磨损研究  

Study on the Wear of Ti(C,N)-based Cermet Matching Seals for Cone Bit

作　　者：周已[1] 雷鑫林 唐艺凤 王儒晨 颜招强 吴兵 ZHOU Yi;LEI Xinlin;TANG Yifeng;WANG Ruchen;YAN Zhaoqiang;WU Bing(School of Mechanical and Electrical Engineering,Southwest Petroleum University,Chengdu Sichuan 610500,China;Zigong Zhaoqiang Sealing Products Industrial,Zigong Sichuan 643000,China)

机构地区：[1]西南石油大学机电工程学院,四川成都610500 [2]自贡兆强密封制品实业有限公司,四川自贡643000

出　　处：《润滑与密封》2024年第7期96-107,共12页Lubrication Engineering

摘　　要：目前牙轮钻头金属密封环通常采用相同的金属材料,其磨损性能不佳,易造成金属密封因磨损严重而失效。为提高金属密封的磨损性能,提出采用Ti(C,N)基金属陶瓷作为牙轮钻头密封副,并开展其与不同材料配副的磨损试验,研究不同摩擦副的摩擦磨损性能和磨损形式;建立适用于牙轮钻头金属密封材料的数值磨损模型,开展Ti(C,N)基金属陶瓷与不同材料配副的双金属密封性能的数值模拟,基于磨损模型预测使用30 h后不同双金属密封的磨损体积。试验结果表明:当Ti(C,N)基金属陶瓷作为动摩擦副,9CrSi作为静摩擦副时,金属环表面平均磨损体积最小,同时摩擦因数较小,磨损性能更佳。通过试验与仿真数据对比,验证了建立的数值磨损模型适用于双金属密封。仿真结果表明:当Ti(C,N)基金属陶瓷作为动金属环,9CrSi作为静金属环时密封端面磨损体积最小,金属密封磨损性能显著提高,其接触应力最大值为23.243 MPa,能够满足密封要求。The metal sealing rings of cone bits usually uses the same metal materials,which have poor wear performance,and can easily cause the metal seal to fail due to severe wear.Ti(C,N)-based cermet was proposed to use as the sealing pair of roller bits.The friction and wear performance,and wear form of the friction pair surface were studied by the wear tests on different material pairs.A numerical wear model suitable for metal sealing materials of cone bit was established,and the numerical simulation of the bimetal sealing performance of Ti(C,N)-based cermet and matching materials was carried out.Based on the wear model,the wear volume of Ti(C,N)-based cermet matching materials for cone bits after test for 30 h was predicted.The test results show that when Ti(C,N)-based cermet is used as a moving pair and 9CrSi is used as a stationary pair,the average wear volume on the surface of the metal ring is the smallest,while the friction coefficient is smaller,and the wear performance is better.By comparing experimental and simulation data,it is verified that the established numerical wear model is suitable for bimetallic seals.The simulation results show that when Ti(C,N)-based cermet is used as a moving metal ring and 9CrSi is used as a static metal ring,the wear volume of the seal end surface is minimal,and the wear performance of the metal seal is significantly improved.The maximum contact stress is 23.243 MPa,which can meet the sealing requirements.

关 键 词：牙轮钻头 TI(C N)基金属陶瓷 密封配副 磨损性能 

分 类 号：TH136[机械工程—机械制造及自动化] TH117