Study On The Coating Process Of Boundray Lubrication Film On Gyro Motor Parts Based On Graphene

The rapid development of aerospace technology puts more stringent requirements on the inertial navigation and guidance system.The gyro motor is the core component of the inertial navigation and guidance system.Its reliability and start-stop lifetime have great influences on the entire inertial navigation and guidance system.Important guarantee.Due to the high working speed of the dynamic pressure motor,surface wear is difficult to avoid during start-stop,and wear is the main factor causing motor starting difficulty.The new nano-material graphene has a stable lamellar structure and excellent mechanical properties.Studies have shown that graphene as a lubricating material can significantly reduce friction and wear.Therefore,it is of great significance to quantify the graphene boundary lubrication film coating process on the surface of the gyro motor parts to reduce the wear of the motor parts.The main research work of this paper includes:Based on the molecular dynamics method,combined with the Lennard-Jones potential,the AIREBO potential,and the second-generation REBO potential,the LAMMPS software was used in conjunction with Materials Studio software to establish a graphene lubrication mechanism simulation model to simulate the influence of graphene materials on the frictional properties of the gyro motor parts.Theoretically,the feasibility of using graphene to reduce the friction and wear of Diamond Like Carbon(DLC)substrate was analyzed.The effects of graphene layer number,normal load and sliding velocity on the friction properties of graphene lubricating film were analyzed.In order to realize the automatic quantitative coating of graphene lubricating film,a homogenizing coating film device was developed.For the typical gyro motor parts,the homogenization coating track is designed;the key components and overall structural scheme of the homogenizing coating equipment is designed using SolidWorks software,and the parameters of the main parts is determined;design the uniform coating based on IMAC-FX motion controller Membrane equipment control system is designed,control system hardware platform is built;the control software function based on equipment coating processing requirements is modularized,and system control software is developed applying VS 2010 software;Renishaw ML10 laser interferometer and inductance micrometer is used,The dynamic and static test of the system verified that the homogenized coating equipment developed by this subject met the design requirements.In order to realize the quantitative controllable coating process,the process route of graphene lubricating film coating was established,and the graphene film on the DLC substrate after coating was detected and characterized by Scanning Electron Microscope(SEM),Atomic Force Microscope(AFM),UMT-3 Friction and wear test machine,and the quantification was verified.The controlled coating process route is feasible.Through the orthogonal experiment of coating process and the analysis of variance and variance,the influence of main process parameters on the friction coefficient of graphene lubricating film was obtained,and the coating process of graphene lubricating film was further optimized to reduce the friction and wear of dynamic pressure motor parts.Providing a feasible method to improve its start-stop life.