Study On Preparation And Mechanism Of New Type Of Cutting Fluid Based On Superlubrication Principle

Manufacturing industry is the foundation of building a country,the sharp weapon of revitalizing the country and the base of strengthening the country.With the rapid development of manufacturing industry,people pay more and more attention to the protection of ecological environment,and environmental protection policy has become a major policy.In “ Made in China 2025 ”,it is clearly proposed to build a green manufacturing system and take the road of ecological civilization development.Titanium alloys with high strength and corrosion resistance are widely used in aviation industry.However,the poor thermal conductivity and high chemical activity of titanium alloys lead to severe tool wear.And cutting fluid with lubricating and cooling function becomes an important means to solve this problem.Therefore,the development of green cutting fluid is of great significance.Traditional oil-based cutting fluid has strong lubrication ability,but it wastes a lot of resources.The water-based cutting fluid with good cooling function conforms to the green manufacturing theme and is the main direction of the development of cutting fluid.In recent years,the study of superlubricity has become a hot topic in tribology field,which points out a new direction for innovative research of water-based cutting fluid.In this paper,the theory of superlubricity is transformed from tribological environment to cutting environment.Based on the superlubricity theory,a new green water-based synthetic cutting fluid with excellent performance was developed.And a set of magnetization processing device for cutting fluid is designed.These studies have improved the lubricity of cutting fluid to a certain extent.Specific research contents are as follows:(1)Firstly,the mechanism of water-based cutting fluid was studied,and the effects and research status of various additives were analyzed.Secondly,the research status of superlubricity phenomenon is described,and the scheme of applying superlubricity theory to cutting is put forward.(2)Under the friction pair of cemented carbide and titanium alloy,the antifriction and antiwear properties of several different lubricating additives at different loads werestudied.The optimum lubricating additives were selected by analyzing the evaluation parameters of Tribological properties.It is then configured into aqueous solutions of different contents.In the field of tribology,its potential as a lubrication additive for water-based cutting fluid was analyzed.(3)Under the condition of milling titanium alloy,the properties of cutting fluid based on several additives were studied.Under the condition of keeping the processing parameters unchanged,the characterization parameters such as force,temperature,friction coefficient,surface morphology and roughness are comprehensively analyzed,and the cutting fluid with the highest cost performance ratio is selected from several cutting fluids of the experimental object.(4)Designing a test device for magnetization treatment of cutting fluid.The cutting fluid obtained from the experiment was magnetized,and the cutting fluid before and after magnetization was used for milling titanium alloy test.The influence of magnetization parameters(magnetic field strength,magnetization time,cutting fluid temperature)on the magnetization effect is analyzed,the optimum scheme of magnetization parameters is determined,and the mechanism of magnetization treatment of water-based cutting fluid is deduced.(5)The cutting fluid treated by magnetization is taken as the research object.The influence of different processing parameters(spindle speed,feed speed,cutting depth)on the performance of cutting fluid was analyzed.The influence of processing parameters on cutting fluid effect is summarized.It provides a reference for the selection of processing parameters in practical application of this cutting fluid.