The Atomization And Charge Characteristics Of Nano-fluid Composite Electrostatic Spray Cutting

In view of the shortcomings of micro-lubrication and electrostatic spray cutting and environmental performance,this paper proposes to carry out "the atomization and charge characteristics of nano-fluid composite electrostatic spray cutting".Specific work includes:1.Analysis of atomization characteristics of nano-fluid composite electrostatic spray cuttingThe atomization test under different voltage,internal and external fluid flow rates and types was carried out,and the influence and law of the above factors on atomization were analyzed and obtained,which provided the basis for the selection of atomization parameters in the cutting process under the condition of that castor oil,sunflower oil and its multi-walled carbon nanotube oil-based nanofluid as outer fluid,deionized water and its multi-walled carbon nanotube water-based nanofluid as inner fluid.2.Analysis of the charging characteristics of nano-fluid composite electrostatic spray cuttingThe nanofluidic composite electrostatic spray cutting atomization current test platform was built.Based on the atomization characteristics,the effects of voltage,flow rate and internal and external fluid types on the atomization current size and stability were studied.It has been found that the addition of nanoparticles to the inner and outer fluids generally reduces the stability of the cone jet mode.Considering the cooling lubrication performance and the cone jet stability,the optimal inner and outer fluid types are determined to be deionized water and castor oil-based nanofluids.3.Model and experimental verification of droplet transport in nanofluidic composite electrostatic spray millingAiming at the deficiencies of the prior art,a droplet transport model of a nanofluidic composite electrostatic spray milling zone was established based on the Lagrangian model,and the effect of the droplet transport was evaluated by calculating the effective utilization rate of the lubricating fluid.Combine the important parameters required by the existing theoretical calculation model with the easy-to-implement indirect test,including the average particle size,the number of droplets generated per unit time,and the number of charges.The model is verified by cutting test and found to have good reliability under certain conditions.