Study On Composite Surface Processing Technology Of Cylinder Liner And Piston Ring By Crater Modeling And Micro-particles Filling

In this paper, based on the former research of cylinder sleeve pit etching surface strengthening foundation, a new processing technology is proposed:the cylinder sleeve and piston ring micro etching and micro particle composite filling surface strengthening technology. And to detect its antiwear and friction reduction effect by experiment.The main methods of this paper is as follows:first, the piston ring micro etching test, explore the surface of piston ring crater treatment effect, then according to the test with different material of piston ring and cylinder liner crater, and the application of scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) on the friction and wear surface morphology samples were characterized, and explore its antiwear and friction reducing mechanism.The test results show that:the piston ring crater test etching surface treatment effect is honing, especially to the piston ring crater filled with molybdenum disulfide nano material had the best effect, the friction coefficient decreases7.67%, resistance to adhesive wear time increased by12.4%:the piston ring and cylinder liner are micro pits and micro etching samples granular composite filling technology has played a very good effect, wherein the cylinder filling MoS2material, piston ring filling serpentine materials are honing samples friction coefficient reduced by30.89%. Anti scuffing of cylinder bore increased323%show that the processing technique is able to reduce friction, reduce wear, prolong the anti-sticking wear time effect.