18CrNiMo7-6齿轮—4106航空润滑油摩擦学系统胶合试验与数据管理

Study on Scuffing Test and Data Management of the 18CrNiMo7-6 Gear-4106 Aviation Oil Tribology System

针对常规浸油润滑齿轮胶合试验不能真实反映齿轮喷油润滑实际运行环境的问题,参考FZG A/8.3/90齿轮胶合承载能力试验方法,使用喷油润滑齿轮疲劳试验台,开展了4106航空润滑油喷油润滑条件下的18CrNiMo7-6渗碳钢制齿轮在磨削和喷丸工艺下的胶合性能试验;并基于两参数威布尔分布理论,实现了不同可靠度下的齿轮胶合性能评价。进一步,基于Python语言和轻量化数据库SQLite开发了齿轮胶合试验数据管理系统,以实现胶合试验数据的有效管理和高效利用。研究表明,同样工况和工艺条件下,齿轮胶合失效的临界FZG载荷级存在2~3级的分散性;基于GB/Z 6413.1—2003闪温法发现,在4106航空润滑油喷油润滑条件下,对于50%、90%、99%可靠度,喷丸工艺状态的齿轮胶合温度分别为212.55℃、183.22℃、152.24℃,相比磨削工艺状态分别提升了1.51%、7.31%、14.99%;开发的数据管理系统实现了胶合试验数据流程管理,通过系统中的两参数威布尔分布拟合功能,可获取不同可靠度下齿轮胶合温度,为评估齿轮胶合承载能力提供了高效工具。

Aiming at the problem that the conventional oil-immersed lubrication condition cannot truly reflect the operating environment of gear oil-injection lubrication,referring to the FZG A/8.3/90 gear scuffing load capacity test method and using oil injection lubrication gear fatigue test bench,the scuffing load capacity test of 18CrNiMo7-6 carburized gears is carried out based on oil injection lubrication condition with 4106 aviation lubricant.Based on the two-parameter Weibull distribution theory,the gear scuffing performance is evaluated under different reliabilities.Furthermore,based on Python language and database SQLite,a gear scuffing test data management system is developed to realize the effective management and efficient utilization of scuffing test data.The results show that under the same working and process condition,the gear scuffing failure FZG load level has 2-3 degree dispersity.Based on GB/Z 6413.1—2003 flash temperature method,it is found that under the condition of 4106 aviation lubricant injection lubrication,for 50%,90%and 99%reliability,the gear scuffing temperature of shot peening process is 212.55℃,183.22℃and 152.24℃respectively,improving by 1.51%,7.31%,14.99%respectively compared with the grinding process state.The developed data management system realizes scuffing test data flow management.Through the fitting function of two-parameter Weibull distribution,the gear scuffing temperature under different reliability can be obtained,which provides an efficient tool for the evaluation of gear scuffing load capacity.