液体火箭的寿命主要受发动机影响,涡轮泵又是发动机的心脏,所以涡轮泵性能至关重要,其平稳运行对火箭发动机的安全运行意义重大.影响涡轮泵稳定运行的核心问题包括轴承和密封的磨损、变形及失效等.文中围绕涡轮泵密封性中的重要组成部件——动密封环的研磨工艺进行研究.对动密封环研磨中材料去除率进行模型构建,研究其去除机理.对材料去除模型工艺参数进行仿真计算,对照研磨试验结果,把研磨加工压力、研磨转速、研磨时间工艺参数作为要素核心.所得的仿真结果可对研磨试验起到预测作用,以提高动密封环加工研磨效率.
The life of liquid rocket is mainly affected by the engine,and the turbine pump is the heart of the engine.Therefore,the performance of the turbine pump is very important,and its smooth operation is of great significance to the safe operation of the rocket engine.The core problems affecting the stable operation of turbopump include the wear,deformation and failure of bearing and seal.This paper focuses on the grinding process of dynamic seal ring,which is an important component of turbine pump sealing.The model of material removal rate in dynamic seal ring grinding is built,and its removal mechanism is studied.The process parameters of the material removal model are simulated and calculated,and the process parameters of the grinding pressure,grinding speed and grinding time are taken as the core elements according to the grinding test results.The simulation results can be used to predict the lapping test and improve the lapping efficiency of the dynamic seal ring.