Spray Cooling Simulation And Experiment Research Of The Cutting Fluid Of Oils On Water

The cutting fluid of oils on water is a new kind of environmentally friendly coolant.The oils on water refers to the use of a small amount of cutting fluid in machining process,and has achieved noticeable attention in academic and industry research areas.This is because the usage of OoW cutting fluid can definitely reduce the cost and volume of using cutting fluid and auxiliary equipment,thus improving the product quality and reducing the production cost.At home and abroad,a large number of studies about atomization mechanism and cutting experiment done by many researchers.It indicates that under certain experiment condition,the OoW machining has better performances compared with other machining ways.Under the background of actively advocate the protection of the environment,this new technology is worth promoted.On the basis of multiphase flow theory,fluid mechanics and some widely used numerical simulation technology,in this paper,we will investigate the formation process of OoW.Using CFD software of Fluent to simulate the flow process in nozzle and atomization process at external flow field.Under different boundary conditions,we found that the simulation results vary greatly,in which the atmospheric pressure has a decisive influence on the atomization effect,and the atomization effect and the particle distribution are better under the pressure is0.2 MPa.Based on the atomization simulation,the numerical simulation of heat transfer is carried out.When the atomized droplets are sprayed onto the surface of the steel plate,the steel plate as a heat source will have a heat exchange process.The cooling effect of the oils on water cutting fluid is to check the strength of the heat exchange degree.The surface temperature of steel plate is set as the cutting temperature under the same kind of material.The final simulation results show that the surface temperature of the droplet and the steel plate averagely decreases after heat exchange,about 57.8% lower,and the cooling effect is remarkable.This paper presents the analysis of average surface roughness,cutting force in turning of0Cr18Ni9 stainless steel on C620-1 lathe by comparatively experimental investigation and performance.The response surface methodology is used to formulate the model response(herein the cutting force and surface roughness)in terms of the independence variables(herein the cutting speed,feed rate and depth of cut).in various coolant technologies(herein the dry machining,traditional machining and OoW)we found that the cutting force and surface roughness has significantly decreased when using OoW cutting fluid.Analysis of variance(ANOVA)determined the effects of cutting speed,feed rate,and depth of cut on the response models.The results revealed that the higher cutting speed is likely generate better favorable machining results.In addition,the higher feed rate was found that ensure bad machining performances.Moreover,feed rate has the greatest influence on cutting force.Through the quadratic regression to establish the empirical formula of the relative roughness and cutting force,the genetic algorithm is used to optimize the roughness results.The optimized results are compared with the experimental results,and the optimization results are good.Based on the above analysis,the OoW cutting fluid has a good effect in aspect of the cooling lubrication,as a new type of green manufacturing technology,it has a high research value and a wide range of applications.