Study on hydrodynamic lubrication and friction reduction performance of cylindrical rolls with Tesla valve texture

AbstractFriction and wear seriously affect the efficiency and life of the machine device. The dynamic pressure lubrication and friction properties of the surface are improved by surface texture technology, which plays an extremely important role in reducing friction and wear. In order to maximize the hydrodynamic lubrication and friction reduction performance of surface texture, a Tesla valve surface texture is proposed in this paper. The oil film bearing capacity and wall friction of Tesla valve texture through CFD(Computational Fluid Dynamics) fluid simulation. Cylindrical rolls with Tesla valve texture are prepared by using the laser processing technology, and comparative friction wear tests are conducted. The results show that the lubrication performance of Tesla valve texture are 4 times higher than those of the non-texture; The friction coefficient and wear loss of the cylindrical rolls with Tesla valve texture are, respectively, 39.7% and 66.7% lower than those of the cylindrical rolls without texture. Tesla valve texture effectively improves the dynamic pressure lubrication and friction in the cylindrical rolls.Keywords: Tesla valveSurface textureDynamic pressure lubricationFriction reduction performanceDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.