Cutting fluid nanocrystallization production method and system

Abstract

The invention discloses a cutting fluid nanocrystallization production method and system.The cutting fluid nanocrystallization production system comprises a high-pressure multiphase flow nanocrystallization module, a nano-particle adding module and a jet flow mixing module.According to the cutting fluid nanocrystallization production method and system, the stability and dispersity of cutting fluid are remarkably enhanced through high-pressure microchannel treatment, and a good basic environment is provided for the effect of the follow-up nanotechnology. The introduction of the nano bubbles greatly increases the surface activity of the cutting fluid, the strong adsorption capacity of the nano bubbles can effectively remove tiny impurities and microorganisms in the cutting fluid, meanwhile, the chemical reaction is promoted, and the chemical composition and performance of the cutting fluid are further optimized; the dispersion of the nano-particles pertinently improves the key performances of lubrication, wear resistance, heat conduction and the like of the cutting fluid, the three components cooperate with each other, supplement each other and act together, so that the comprehensive performance of the cutting fluid is comprehensively and greatly improved, and in actual processing application, the friction coefficient between a cutter and a workpiece can be effectively reduced, and the service life of the cutting fluid is prolonged. Tool abrasion is reduced, and machining precision and surface quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting fluid production, and more specifically, to a method and system for producing nano-sized cutting fluid. Background Art

[0002] In the field of modern machining, cutting fluid is a key processing aid to ensure machining quality and efficiency, and it plays an irreplaceable role in aspects such as cooling, lubrication, cleaning, and rust prevention. However, traditional cutting fluids face many severe challenges during use. As machining continues, cutting fluid is easily contaminated by impurities such as metal chips, oil stains, and microorganisms generated during the cutting process, resulting in a decline in performance. Metal chips will exacerbate the friction and wear between the tool and the workpiece, reducing machining accuracy; the growth of microorganisms will decompose the effective components in the cutting fluid, change its chemical properties, produce odors and corrosive substances, endanger the health of machining equipment and operators, and at the same time greatly reduce the lubrication and cooling effects of the cutting fluid. With the continuous development of nanotechnology, the application of nanomaterials in the field of cutting fluid has gradually become a research hotspot.

[0003] Existing treatment methods have limitations. Physical treatment methods such as filtration and centrifugation can remove some impurities with larger sizes, but it is difficult to completely remove tiny impurities, harmful substances dissolved in the cutting fluid, and microorganisms. Chemical treatment methods can decompose pollutants through chemical reactions, but they often require the use of a large amount of chemical agents, which not only increases the treatment cost but may also introduce new chemical substances, causing secondary pollution and putting greater pressure on the environment. Biological treatment methods are relatively environmentally friendly, but their treatment efficiency is low and the treatment cycle is long, making it difficult to meet the requirements for rapid and efficient treatment of cutting fluid in large-scale production.

[0004] Due to their unique physical and chemical properties, such as small size effect, surface effect, and quantum size effect, etc., nanoparticles are considered to have the potential to improve the performance of cutting fluid. For example, nanoparticles can fill the tiny gaps between the tool and the workpiece to form a nano-level lubricating film, thereby reducing the friction coefficient and improving the lubrication performance. At the same time, nanoparticles can also enhance the heat conduction performance of the cutting fluid and improve the cooling efficiency. However, the application of single nanotechnology often cannot comprehensively solve the complex problems faced by cutting fluid. For example, the dispersion stability of nanoparticles in cutting fluid is poor, and they are prone to agglomeration and precipitation, resulting in the inability to fully exert their performance. Moreover, the effect of nanoparticles alone on removing impurities and inhibiting microorganisms in cutting fluid is limited.

[0005] Therefore, it is necessary to invent a method and system for producing nano-sized cutting fluid to solve the above problems. Summary of the Invention

[0006] The present invention aims to provide a cutting fluid production system and method based on the integration of high-pressure microchannel multiphase flow nanotechnology. By ingeniously combining high-pressure microchannel technology, nanobubble technology, and nanoparticle addition technology, in-depth strengthening treatment of cutting fluid is achieved, thereby significantly improving the performance of cutting fluid, extending its service life, reducing usage costs, and minimizing environmental pollution, providing an efficient, environmentally friendly, and sustainable cutting fluid treatment solution for the machining industry.

[0007] To achieve the above object, the present invention provides the following technical solution: A cutting fluid nanonization production system includes a high-pressure multiphase flow nanonization module, a nanoparticle addition module, and a jet mixing module connected in sequence. The high-pressure multiphase flow nanonization module is used to break and disperse impurities and aggregates in the cutting fluid, disperse gas in the form of nanobubbles in the cutting fluid, and simultaneously change the physical properties of the cutting fluid. The jet mixing module is used to ensure a highly uniform fusion and phase balance among nanobubbles, nanoparticles, and the cutting fluid.

[0008] As a further description of the above technical solution, the high-pressure multiphase flow nanonization module includes a high-pressure pump, a microchannel processor module, and a pressure sensor. The output end of the high-pressure pump is connected to the microchannel processor module. The pressure sensor is located inside the microchannel processor module. The microchannel processor module also has a combined channel with a characteristic size ranging from micrometers to millimeters.

[0009] As a further description of the above technical solution, the combined channel includes a fluid channel and a gas channel. The aspect ratio of the fluid channel is between 2:1 and 10:1, and the jet angle is in the range of 40 degrees to 180 degrees. The gas channel is arranged in the negative pressure area of the jet convergence point.

[0010] As a further description of the above technical solution, the microchannel processor module further includes a gas supply source, a nanobubble generator, and a gas flow controller. The nanobubble generator is used to convert gas into nanoscale bubbles and uniformly disperse them in the cutting fluid. The gas flow controller is located inside the gas channel and the flow rate adjustment range is 0.5 - 2 L / min.

[0011] As a further description of the above technical solution, the gas supply source includes an air supply source, an oxygen supply source, a nitrogen supply source, and a carbon dioxide supply source.

[0012] As a further description of the above technical solution, the jet mixing module includes a pressure mixing tank and a submerged jet mixer, the submerged jet mixer is used to mix the fluid with the cutting fluid in the pressure mixing tank, the nanoparticle adding module is located upstream of the jet mixing module and is connected to the combined channel in the high-pressure multiphase flow nano-module, and the nanoparticle adding module realizes quantitative addition of nanoparticles in the cutting fluid by accurately controlling the addition flow rate and addition time;

[0013] A method for producing nano-cutting fluid comprises the following steps:

[0014] Step 1) The cutting fluid to be treated is delivered to the microchannel processor module through a high-pressure pump, and the pressure of the high-pressure pump is set to 15MPa, so that the cutting fluid undergoes a high-pressure treatment process of turbulent shear, cavitation phase change and jet collision in the combined channel, during which impurities and agglomerates in the cutting fluid are broken into smaller particles under the action of strong shear force and pressure, and are evenly dispersed in the cutting fluid;

[0015] Step 2) the cutting fluid processed by the microchannel processor module enters the nanobubble generator, a gas is selected from the gas supply source as a gas source according to needs, the gas flow rate is adjusted to 1.8 L / min by a gas flow controller, and then the nanobubble generator is used to generate nanobubbles by a high-pressure dissolved gas method;

[0016] Step 3) controlling the average particle size of the nanobubbles within the range of 100 to 500 nm, so that the concentration of the nanobubbles per milliliter in the cutting fluid reaches more than 100 million. At this time, the nanobubbles are evenly distributed in the cutting fluid, and absorb tiny impurities, microorganisms and partially dissolved harmful substances in the cutting fluid by virtue of their huge specific surface area and surface activity, while promoting the redox chemical reaction in the cutting fluid, further purifying the cutting fluid and improving its stability;

[0017] Step 4) The nano-sized cutting fluid is sent to the pressure mixing tank of the jet mixing module. In this process, the nanoparticles are added to the nano-sized cutting fluid through the nanoparticle adding module. At this time, the multiphase flow passes through the jet mixer at a flow rate of more than 10 meters per second, and turbulent mixing is performed in the submerged fluid. The volume and pressure effects of the pressure mixing tank are used to achieve kinetic energy conversion and phase equilibrium at the interfaces of each phase, ensuring that the nanobubbles, nanoparticles and cutting fluid are fully integrated to form a stable system to obtain the enhanced cutting fluid.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention significantly enhances the stability and dispersibility of the cutting fluid through high-pressure microchannel treatment, providing a good basic environment for the subsequent action of nanotechnology. The introduction of nano-bubbles greatly increases the surface activity of the cutting fluid. Its strong adsorption ability can effectively remove tiny impurities and microorganisms in the cutting fluid, while promoting chemical reactions and further optimizing the chemical composition and performance of the cutting fluid. The dispersion of nano-particles specifically improves key properties such as lubrication, anti-wear, and heat conduction of the cutting fluid. The three work synergistically and complementarily with each other, and their combined action enables the comprehensive performance of the cutting fluid to be improved comprehensively and significantly. In actual machining applications, it can effectively reduce the friction coefficient between the tool and the workpiece, reduce tool wear, improve machining accuracy and surface quality, extend the service life of the tool, and significantly improve machining efficiency and product quality;

[0020] 2. The treatment system and method of the present invention can efficiently remove various impurities and pollutants in the cutting fluid, inhibit the growth and reproduction of microorganisms from the source, and slow down the rate of decline of the cutting fluid performance over time. By regularly performing the strengthening treatment of the present invention on the cutting fluid, the effective service life of the cutting fluid can be extended, which means that the replacement cycle of the cutting fluid is greatly extended, reducing the frequency of cutting fluid replacement, and thus significantly reducing production costs, including cutting fluid procurement costs, labor costs during the replacement process, and cutting fluid waste treatment costs, etc.;

[0021] 3. By reducing the number of cutting fluid replacements, the present invention correspondingly reduces the pollution caused by cutting fluid discharge to the environment. At the same time, during the entire strengthening treatment process, the usage amounts of nano-bubbles and nano-particles are relatively small, and they themselves have good environmental compatibility, without generating new harmful substances during the treatment process and not imposing an additional burden on the environment. In addition, by improving the performance of the cutting fluid and reducing tool wear, it indirectly reduces resource consumption and environmental pollution during the tool production process, having good environmental benefits and sustainability.

[0022] 4. Each key module in the nanofluid production system of the present invention is equipped with high-precision control equipment. For example, a pressure sensor can accurately monitor the pressure in the microchannel in real time, a gas flow controller can precisely adjust the gas flow in the nanobubble generator, and a metering pump can strictly add nanoparticles according to the set ratio. These precise control devices enable the entire processing process to flexibly and precisely adjust the processing parameters according to different types of cutting fluids (such as emulsified, semi-synthetic, and fully synthetic cutting fluids) and diverse processing requirements (such as different processing materials, processing techniques, and processing accuracy requirements). Whether it is the pressure and time in high-pressure microchannel processing, the gas source selection, bubble size, and saturation control during the nanobubble generation process, or the type and ratio of nanoparticle addition, etc., the parameters can be optimized according to actual needs, so as to achieve precise control and personalized optimization of the cutting fluid strengthening process, ensure that the performance of the processed cutting fluid reaches the best state, and meet the processing requirements under various complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a system structure diagram provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the following will further elaborate on the present application in combination with the drawings and specific implementation manners.

[0027] Refer to the attached Figure 1, A nanofluid production system for cutting fluid, comprising a high-pressure multiphase flow nanonization module, a nanoparticle addition module, and a jet mixing module connected in sequence. The high-pressure multiphase flow nanonization module is used to break and disperse impurities and agglomerates in the cutting fluid, disperse gas in the form of nanobubbles in the cutting fluid, and simultaneously change the physical properties of the cutting fluid. The jet mixing module is used to ensure a highly uniform fusion and phase balance among the nanobubbles, nanoparticles, and cutting fluid.

[0028] The high-pressure multiphase flow nanonization module includes a high-pressure pump, a microchannel processor module, and a pressure sensor. The output end of the high-pressure pump is connected to the microchannel processor module. The high-pressure pump is used to pressurize the cutting fluid to a specific pressure range and then transport it into the microchannel processor module. The pressure sensor is located inside the microchannel processor module. The microchannel processor module is internally provided with a combination channel with a carefully designed characteristic size ranging from micrometers to millimeters. The combination channel includes a fluid channel and a gas channel. Among them, the aspect ratio of the fluid channel is between 2:1 and 10:1, and the jet angle is in the range of 40 degrees to 180 degrees. The gas channel is arranged in the negative pressure area of the jet convergence point, and the through diameter is less than 1 mm. Through the combined optimization of the flow channel parameters and the adjustment of the design parameter matching, strong shear force, turbulence, and pressure changes can be generated when the cutting fluid and gas pass through. The pressure sensor is used to monitor the pressure inside the microchannel in real time and feedback the signal to the control system to ensure that the system pressure is always stable within the optimal working range, guaranteeing the consistency and reliability of the processing process;

[0029] The microchannel processor module further includes a gas supply source, a nanobubble generator, and a gas flow controller. The gas supply source can provide a variety of gases and can select a suitable gas source according to different processing requirements. The gas flow controller is located inside the gas channel and the flow regulation range is 0.5 - 2 L / min, which is used to precisely control the gas flow rate to ensure that the gas enters the nanobubble generator at a stable rate. The nanobubble generator uses advanced multiphase flow nanonization technology to convert the gas into nanoscale bubbles (with an average particle size between 100 - 500 nm) and uniformly disperse them in the cutting fluid;

[0030] The jet mixing module includes a pressure mixing tank and a submerged jet mixer. The submerged jet mixer is used to fully turbulently mix the fluid in the pressure mixing tank in a high-speed jet manner and under a pressure environment with the cutting fluid after nanobubble treatment and nanoparticle addition. A nanoparticle addition module is arranged between the jet mixing module and the high-pressure multiphase flow nanonization module. The nanoparticle addition module is located upstream of the jet mixing module and is connected to the combination channel inside the high-pressure multiphase flow nanonization module. By precisely controlling the flow rate and addition time of the addition module, the quantitative addition of nanoparticles in the cutting fluid is achieved.

[0031] A method for producing nanofluid cutting fluid includes the following steps:

[0032] Step 1) The cutting fluid to be processed is transported to the microchannel processor module by a high-pressure pump. The pressure of the high-pressure pump is set to 15 MPa, so that the cutting fluid undergoes a high-pressure treatment process of turbulent shear, cavitation phase change and jet impact in the microchannel. The introduced gas, together with the impurities and aggregates in the cutting fluid, is broken into smaller particles under the action of strong shear force and pressure, and is evenly dispersed in the cutting fluid;

[0033] Step 2) The cutting fluid processed by the microchannel processor module enters the nano-bubble generator. A suitable gas (such as air) is selected from the gas supply source, and the gas flow rate is adjusted to 1.8 L / min through the gas flow controller. Then, the nano-bubble generator uses the high-pressure dissolved gas method to generate nano-bubbles;

[0034] Step 3) Control the average particle size of the nano-bubbles to be in the range of 100 to 500 nm, so that the concentration of nano-bubbles in the cutting fluid reaches more than 100 million per milliliter. At this time, the nano-bubbles are evenly distributed in the cutting fluid. With their huge specific surface area and surface activity, they begin to adsorb tiny impurities, microorganisms and some dissolved harmful substances in the cutting fluid, and at the same time promote chemical reactions such as oxidation-reduction in the cutting fluid, further purifying the cutting fluid and improving its stability;

[0035] Step 4) The nano-enabled cutting fluid is sent into the pressure mixing tank of the jet mixing module. During this process, nano-particles are added to the nano-enabled cutting fluid through the nano-particle addition module. At this time, the multiphase flow passes through the jet mixer at a flow rate of more than 10 meters per second, and undergoes turbulent mixing in the submerged fluid. The kinetic energy conversion and phase equilibrium of each phase interface are realized by using the volume and pressure effects of the pressure mixing tank to ensure that the nano-bubbles, nano-particles and cutting fluid are fully integrated to form a stable system, and the strengthened cutting fluid is obtained.

[0036] Example 1:

[0037] Preparation work: Selection of cutting fluid. A commonly used emulsified cutting fluid is selected, and its initial performance parameters are as follows: kinematic viscosity is 30 mm 2 / s, pH value is 8.2, lubrication coefficient is 0.15, and microbial content is 5×10 4 CFU / mL.

[0038] Gas source and nano-particle preparation: Determine air as the gas source for nano-bubbles, select titanium dioxide nano-particles with an average particle size of 20 nm as the added nano-particles, and pre-store them in the nano-particle storage tank in the nano-particle addition module.

[0039] High-pressure microchannel treatment: The emulsified cutting fluid is pressurized to 15 MPa by a high-pressure pump and then delivered to the microchannel processor module. The microchannels of the microchannel processor are designed as a variable cross-section multi-channel combination. The cutting fluid is processed in the microchannels, and the processing time is set to 6 minutes. During the processing, the high-pressure pump maintains a stable pressure output, and the pressure sensor monitors the pressure in real time to ensure that the pressure fluctuation is within the range of ±0.5 MPa.

[0040] Nano-bubble generation: Air is selected as the gas source. After the gas flow is adjusted to 1.8 L / min by the gas flow controller, it enters the nano-bubble generator. Then, the high-pressure dissolved gas and high-pressure multiphase flow method are used to generate nano-bubbles. By precisely controlling parameters such as the dissolved gas pressure and time, the average particle size of the nano-bubbles reaches 200 nm, and it is ensured that the concentration of bubbles in the cutting fluid reaches more than 100 million per milliliter. At this time, the nano-bubbles are evenly dispersed in the cutting fluid after high-pressure microchannel treatment and begin to play their role in adsorbing impurities and promoting chemical reactions.

[0041] Jet balance: During the process of feeding the nano-sized cutting fluid into the pressure tank, nano-particles are added to the nano-sized cutting fluid through the nano-particle addition module. The residence time of the cutting fluid in the tank is 1 minute. After sufficient turbulent diffusion and pressure balance, a stable mixed system of nano-bubbles, nano-particles and cutting fluid is formed, and the cutting fluid after enhanced treatment is obtained.

[0042] Performance testing and effect evaluation: Comprehensive performance testing is carried out on the cutting fluid after enhanced treatment. The results show that: the kinematic viscosity is reduced to 25 mm 2 / s, the pH value is stabilized at 8.0, the lubrication coefficient is reduced to 0.08 (increased by 0.08), and the microbial content is reduced to 5×10 2 CFU / mL. In the actual cutting processing test, when using the cutting fluid after enhanced treatment to machine aluminum alloy workpieces, the tool wear rate is reduced by 40% compared with using the original cutting fluid, the surface roughness of the machining is reduced from Ra1.6 μm to Ra0.8 μm, and the machining efficiency is increased by 30%. This fully proves the significant improvement effect of the treatment system and method of the present invention on the performance of the cutting fluid.

[0043] Example 2:

[0044] Preparation work: Selection of cutting fluid, semi-synthetic cutting fluid is used, and its initial performance parameters are: kinematic viscosity 25 mm 2 / s, pH value 9.0, lubrication coefficient 0.12, microbial content 3×10 4 CFU / mL. Preparation of gas source and nano-particles: Oxygen is selected as the nano-bubble gas source, and carbon nanotubes with an average particle size of 30 nm are prepared as nano-particles and stored properly in the nano-particle storage tank.

[0045] High-pressure microchannel treatment: The semi-synthetic cutting fluid is pressurized to 15 MPa by a high-pressure pump and then enters the microchannel processor. The microchannels of the microchannel processor are circular, with a diameter of 80 μm and a length of 18 cm. The treatment time of the cutting fluid in the microchannels is 8 minutes. The high-pressure pump and the pressure sensor work together to keep the pressure stable within the range of 15 MPa ± 0.3 MPa.

[0046] Nano-bubble generation: Oxygen is adjusted to a flow rate of 1.8 L / min by a gas flow controller and then enters the nano-bubble generator. Nano-bubbles are generated by the phase change shear method. By optimizing parameters such as system pressure and power, the average particle size of the nano-bubbles is controlled below 500 nm, and the saturation of oxygen in the cutting fluid reaches 80%. The nano-bubbles are evenly distributed in the cutting fluid and act on impurities and microorganisms in the cutting fluid.

[0047] Jet balance: The nano-processed cutting fluid is fed into the pressure mixing tank of the jet mixing module. At this time, the multiphase flow passes through the jet mixer at a flow rate of more than 10 m per second, and turbulent mixing occurs in the submerged fluid. The kinetic energy conversion and phase balance of each phase interface are realized by using the volume and pressure effects of the pressure mixing tank to ensure that the nano-bubbles, nano-particles and the cutting fluid are fully fused to form a stable system, and the strengthened cutting fluid is obtained.

[0048] Performance testing and effect evaluation: Test the performance of the strengthened cutting fluid. The kinematic viscosity becomes 22 mm 2 / s, the pH value is maintained at 8.8, the lubrication coefficient is reduced to 0.06, and the microbial content is reduced to 2×10 2 CFU / mL. When machining stainless steel workpieces, the service life of the cutting tool is extended by 60% compared with using the original cutting fluid, the machining accuracy is improved, and the surface quality is significantly improved, further verifying the effectiveness and superiority of the present invention.

[0049] Comparison table of various performance test data of conventional cutting fluid and cutting fluid produced by nano-processing:

[0050]

[0051]

[0052]

[0053] It can be clearly seen from the above embodiments that the cutting fluid strengthening treatment system and method based on the integration of high-pressure microchannels and dual-nanotechnology of the present invention can effectively improve the performance of cutting fluid, significantly extend its service life, and have broad application prospects and good economic and environmental benefits in practical applications. During the actual production process, various parameters of the system can be flexibly adjusted according to factors such as different types of cutting fluid, processing technology requirements, and equipment conditions to achieve the best treatment effect. At the same time, to ensure the long-term stable operation of the system, each component of the system should be regularly maintained, such as checking the sealing performance of the high-pressure pump, cleaning the microchannel processor, etc., to ensure the high efficiency of the cutting fluid strengthening treatment process.

[0054] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cutting fluid nano-production system, characterized by: It includes a high-pressure multiphase flow nano-sizing module, a nanoparticle adding module and a jet mixing module which are connected in sequence. The high-pressure multiphase flow nano-sizing module is used to break and disperse impurities and agglomerates in the cutting fluid, and disperse the gas in the cutting fluid in the form of nanobubbles while changing the physical properties of the cutting fluid. The jet mixing module is used to ensure highly uniform fusion and phase balance among the nanobubbles, nanoparticles and cutting fluid.

2. A cutting fluid nano-production system according to claim 1, characterized in that: The high-pressure multiphase flow nano-module includes a high-pressure pump, a microchannel processor module and a pressure sensor. The output end of the high-pressure pump is connected to the microchannel processor module. The pressure sensor is located inside the microchannel processor module. The microchannel processor module is also provided with a combined channel with a characteristic size ranging from micrometers to millimeters.

3. A cutting fluid nano-production system according to claim 2, characterized in that: The combined channel comprises a fluid channel and a gas channel, the aspect ratio of the fluid channel is between 2:1 and 10:1, the jet angle is between 40 degrees and 180 degrees, and the gas channel is arranged in the negative pressure zone at the jet convergence point.

4. A cutting fluid nano-production system according to claim 3, characterized in that: The microchannel processor module also includes a gas supply source, a nanobubble generator and a gas flow controller. The nanobubble generator is used to convert gas into nanoscale bubbles and evenly disperse them in the cutting fluid. The gas flow controller is located inside the gas channel and has a flow adjustment range of 0.5-2L / min.

5. The cutting fluid nano-production system according to claim 4, characterized in that: The gas supply source includes an air supply source, an oxygen supply source, a nitrogen supply source and a carbon dioxide supply source.

6. A cutting fluid nano-production system according to claim 5, characterized in that: The jet mixing module includes a pressure mixing tank and a submerged jet mixer. The submerged jet mixer is used to mix the fluid with the cutting fluid in the pressure mixing tank. The nanoparticle adding module is located upstream of the jet mixing module and is connected to the combined channel in the high-pressure multiphase flow nano-module. The nanoparticle adding module realizes quantitative addition of nanoparticles in the cutting fluid by precisely controlling the addition flow rate and addition time.

7. A method for producing nano-cutting fluid, using the system according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1) The cutting fluid to be treated is delivered to the microchannel processor module through a high-pressure pump, and the pressure of the high-pressure pump is set to 15MPa, so that the cutting fluid undergoes a high-pressure treatment process of turbulent shear, cavitation phase change and jet collision in the combined channel, during which impurities and agglomerates in the cutting fluid are broken into smaller particles under the action of strong shear force and pressure, and are evenly dispersed in the cutting fluid; Step 2) the cutting fluid processed by the microchannel processor module enters the nanobubble generator, a gas is selected from the gas supply source as a gas source according to needs, the gas flow rate is adjusted to 1.8 L / min by a gas flow controller, and then the nanobubble generator is used to generate nanobubbles by a high-pressure dissolved gas method; Step 3) controlling the average particle size of the nanobubbles within the range of 100 to 500 nm, so that the concentration of the nanobubbles per milliliter in the cutting fluid reaches more than 100 million. At this time, the nanobubbles are evenly distributed in the cutting fluid, and absorb tiny impurities, microorganisms and partially dissolved harmful substances in the cutting fluid by virtue of their huge specific surface area and surface activity, while promoting the redox chemical reaction in the cutting fluid, further purifying the cutting fluid and improving its stability; Step 4) The nano-sized cutting fluid is sent to the pressure mixing tank of the jet mixing module. In this process, the nanoparticles are added to the nano-sized cutting fluid through the nanoparticle adding module. At this time, the multiphase flow passes through the jet mixer at a flow rate of more than 10 meters per second, and turbulent mixing is performed in the submerged fluid. The volume and pressure effects of the pressure mixing tank are used to achieve kinetic energy conversion and phase equilibrium at the interfaces of each phase, ensuring that the nanobubbles, nanoparticles and cutting fluid are fully integrated to form a stable system to obtain the enhanced cutting fluid.

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