Investigation On Efficient Cutting Method Based On Co-axial Electrostatic Atomization Of Nanofluids

Compared with minimal quantity lubrication,electrostatic spray technology can not only effectively reduce tool wear,but also greatly reduce the oil mist concentration in the working environment,and the pollution to the environment is small.However,the researchers in this group can only use a kind of nanofluid(oil based or water base),and do not combine the comprehensive ability of the two to improve the cooling and lubrication performance in order to meet the high requirements of high efficiency cutting for cooling and lubrication.In order to further improve the cooling capacity of micro lubrication,based on the theory of coaxial electrostatic atomization,a high efficiency cutting method based on coaxial electrostatic atomization based on nanofluids is proposed,which is based on the high lubrication performance of oil based Nanofluids and the high cooling performance of water based nanofluids to meet new high efficiency green cutting technology.The main research work is as follows:1.Atomization morphology of nanofluid coaxial electrostatic atomizationOn the coaxial electrostatic atomization cutting device,two kinds of interphase dissoluble liquid medium with oil based Nanofluids and water based nanofluids were tested by coaxial electrostatic atomization.The atomization morphology of the coaxial electrostatic atomization was investigated by the voltage,flow rate and fluid change(type and volume fraction of nanofluids).The influence.It is found that the cone jet is a coaxial electrostatic atomization model suitable for the cooling and lubrication of the cutting process.The voltage range of the cone jet is studied under different cooling conditions.2.Coaxial electrostatic atomization and heat transfer performance of micro nanofluidsOn the set of coaxial electrostatic fog heat exchange test device,the steady heat transfer test was carried out,and the heat transfer coefficient was measured.The effect of internal and external fluid change(type and volume fraction of nanofluids)on the performance of coaxial electrostatic atomization was explored,and the mechanism and law of heat exchange were analyzed.3.Micro nano fluid coaxial electrostatic atomization cutting testOn the basis of the coaxial electrostatic spray cutting system,the milling experiment of titanium alloy was carried out,and the quality of cutting air environment was tested.The results show that compared with the coaxial electrostatic spray cutting,the maximum wearof the tool surface,the tool tip wear and the tool working boundary wear are obviously reduced with the water based nanofluid and the LB2000 plant lubricating oil as the inner and outer layer fluid,and the oil mist concentration also meets the national standard.According to the comprehensive cutting performance and environmental performance,the coaxial electrostatic atomization with water based nanofluid and LB2000 plant lubricating oil as the internal and external fluid is the appropriate cooling and lubrication method for the green milling of titanium alloy.