Anode post-cutting fluid and preparation method thereof

Abstract

The invention relates to the technical field of machining, and discloses an anode post-cutting fluid and a preparation method thereof, and the cutting fluid comprises the following raw materials by weight: 30-60% of a polyol derivative; 10%-30% of a polyol polymer; 5%-15% of a water-soluble polyol ester; 5%-10% of high alcohol; 5%-10% of isomeric alcohol; according to the invention, the raw material ratio range is optimized, nitrogen is adopted for protecting melting in the raw material pretreatment stage, the temperature and the rotating speed are controlled during oil phase mixing, and gradient water adding and staged homogenization are adopted during water phase emulsification, so that the prepared cutting fluid has excellent appearance, stability, anti-rust property and lubricity indexes; the prepared cutting fluid is light yellow and transparent in appearance, free of layering after being placed at 40 DEG C for 48 hours, free of rusty spots on rust resistance after being used for 24 hours and low in friction coefficient, and the particle size D90 is smaller than or equal to 5 microns. According to the formula and the preparation process, the processing efficiency and the processing quality of the cutting fluid can be effectively improved, and equipment abrasion and maintenance cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and specifically to a post-anode cutting fluid and a preparation method thereof. Background Art

[0002] There are some problems in the preparation process of the existing cutting fluid. For example, improper raw material ratio and unstable preparation process lead to the performance of the cutting fluid not meeting the expected requirements. For instance, too high alkaline components in the existing cutting fluid will cause corrosion; too strong acidity in the existing cutting fluid will damage the lubricity; fluctuations in process parameters during the preparation process of the existing cutting fluid will cause an increase in particle size, thus affecting the lubricity. Therefore, it is necessary to provide a post-anode cutting fluid and a preparation method thereof to solve the problems existing in the prior art. Summary of the Invention

[0003] (I) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a post-anode cutting fluid and a preparation method thereof, which have the advantages of excellent lubricity, cooling property, rust prevention property and stability, and solve the problems of improper raw material ratio and unstable preparation process in the prior art.

[0004] (II) Technical Solutions To achieve the above object, the present invention provides the following technical solution: A post-anode cutting fluid, the raw materials of the cutting fluid and their weight ratios are: polyol derivatives 30% - 60%; polyol polymers 10% - 30%; water-soluble polyol esters 5% - 15%; higher alcohols 5% - 10%; isomeric alcohols 5% - 10%; the balance is deionized water.

[0005] Preferably, the raw materials of the cutting fluid and their weight ratios are: polyol derivatives 35%; polyol polymers 25%; water-soluble polyol esters 10%; higher alcohols 8%; isomeric alcohols 9%; the balance is deionized water.

[0006] Preferably, the polyol derivatives are selected from one of glycerol monostearate or pentaerythritol oleate, and the polyol polymers are selected from one of polyethylene glycol 600 - 1000 or polypropylene glycol 400 - 800.

[0007] Preferably, the water-soluble polyol esters are selected from two or three of trimethylolpropane oleate, neopentyl glycol laurate and sorbitol palmitate.

[0008] Preferably, the higher alcohols are selected from two or three of tetradecanol, hexadecanol or octadecanol, and the isomeric alcohols are selected from two or three of 2-ethylhexanol, isooctanol, isodecanol.

[0009] A preparation method of post-anode cutting fluid, which is prepared according to the raw materials and their weight ratios of the above-mentioned post-anode cutting fluid, and includes the following preparation steps: Step 1. Raw material pretreatment: Weigh polyol derivatives, polyol polymers, water-soluble polyol esters, higher alcohols, isomeric alcohols and deionized water according to the formula ratio, and melt the polyol derivatives and polyol polymers; Step 2. Oil phase mixing: Transfer the melted polyol derivatives and polyol polymers to a reaction kettle, and sequentially add higher alcohols, isomeric alcohols and water-soluble polyol esters. The temperature of the reaction kettle is controlled between 60-65 °C, and it is stirred at a speed of 400-600 r / min for 20-30 min to form a uniform oil phase mixture; Step 3. Aqueous phase emulsification: Add deionized water to the reaction kettle, raise the temperature by 10-15 °C, switch to a high-speed homogenizer, increase the speed for emulsification to form a stable emulsion; Step 4. pH adjustment: Lower the temperature of the emulsion to 35-40 °C, add a pH regulator, adjust the pH range, and continuously stir to obtain a homogeneous solution; Step 5. Filtration and detection: Pass the homogeneous solution through a precision filter, take samples for detection, so that the final relative density of the solution is between 1.0 ± 0.1, and the pH value is kept between 6.0-8.0 to obtain a light yellow transparent cutting fluid; Step 6. Packaging and storage: Fill the light yellow transparent cutting fluid into a corrosion-resistant container, store it at a temperature of <30 °C, and in a ventilated warehouse without acid substances, and be equipped with anti-leakage emergency equipment, neutralizing agents and adsorption materials.

[0010] Preferably, in the raw material pretreatment of Step 1: Place the polyol derivatives and polyol polymers in a water bath at 60-70 °C for 20-30 min, preheat until completely melted, and the melting process is carried out under nitrogen protection.

[0011] Preferably, the conditions for aqueous phase emulsification in Step 3: Control the water addition speed of deionized water to be 0.5-1.0 L / min, and add deionized water in a gradient heating manner. When 50% of the water volume is added for the first time, the temperature is raised to 65-70 °C, and the remaining 50% of the water volume is added in two times, with an interval of 3-5 min each time, and the final temperature reaches 75-80 °C; Adjust the speed of the homogenizer in two stages. The speed is 1400-1500 r / min in the first 15 min and is increased to 1500-1600 r / min in the next 25 min.

[0012] Preferably, in the pH adjustment process of Step 4: Lower the temperature of the emulsion to between 30-40 °C, add triethanolamine or borate buffer solution as a pH regulator, adjust the pH of the solution to between 6.5-7.5, and then continue to stir for 10-20 min.

[0013] Preferably, the filtration conditions in Step Five are as follows: Pass the homogeneous solution through a 5-10 μm precision filter to remove impurities, and control the filtration pressure at 0.2-0.5 MPa.

[0014] Compared with the prior art, the present invention provides an anode post-cutting fluid and a preparation method thereof, having the following beneficial effects: 1. By optimizing the raw material ratio range, the polyol derivative is controlled between 30% and 60%, and the polyol polymer is controlled between 10% and 30%. During the raw material pretreatment stage, nitrogen protection melting is adopted. When mixing the oil phase, the temperature and rotation speed are controlled. When emulsifying the water phase, gradient water addition and staged homogenization are adopted, so that the prepared cutting fluid shows excellent performance in terms of appearance, stability, rust prevention and lubricity. Moreover, the finally prepared cutting fluid has a light yellow transparent appearance, no stratification after being placed at 40°C for 48 hours, no rust spots after 24-hour rust prevention, a low friction coefficient, and a particle size D90 ≤ 5 μm. The formula and preparation process of the present invention can not only effectively improve the processing efficiency and quality of the cutting fluid, but also reduce equipment wear and maintenance costs.

[0015] 2. By using a composite system composed of triethanolamine and borate buffer solution with a mass ratio of 1:2 as the pH regulator, controlling its addition amount and the adjusted pH range, and then through the steps of standing and retesting, the precise regulation of the pH value of the cutting fluid is realized, and the pH value of the cutting fluid is stabilized between 6.8 and 7.2. Such a slightly alkaline environment can not only effectively prevent metal corrosion during processing, but also avoid problems such as emulsion demulsification and lubricity decline caused by too high or too low pH, thereby extending the service life of the cutting fluid, improving its safety in practical applications, and reducing economic losses caused by cutting fluid deterioration or processing problems.

[0016] 3. In the final stage of the preparation process, by using a 5-10 μm precision filter and controlling the filtration pressure at 0.2-0.5 MPa, impurities in the cutting fluid can be effectively removed to ensure its purity. At the same time, the cutting fluid is placed in a 40°C constant temperature box for 48 hours for stability detection, and strict detection is carried out on indicators such as relative density, pH value, appearance, and viscosity. Only products that meet all the standards will be recognized as qualified. Such a strict filtration and detection process ensures the stability and consistency of the cutting fluid quality from the source, enabling each batch of products to meet the expected performance requirements, which helps to improve the stability of the user's production process and the controllability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a flowchart for the preparation of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. 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.

[0019] Please refer to Figure 1 , a post-anode cutting fluid, the raw materials of the cutting fluid and their weight ratios are as follows: polyol derivatives 30% - 60%; polyol polymers 10% - 30%; water-soluble polyol esters 5% - 15%; higher alcohols 5% - 10%; isomeric alcohols 5% - 10%; the balance is deionized water.

[0020] Specifically, the raw materials of the cutting fluid and their weight ratios are: polyol derivatives 35%; polyol polymers 25%; water-soluble polyol esters 10%; higher alcohols 8%; isomeric alcohols 9%; the balance is deionized water.

[0021] Specifically, the polyol derivatives are selected from one of glycerol monostearate or pentaerythritol oleate, and the polyol polymers are selected from one of polyethylene glycol 600 - 1000 or polypropylene glycol 400 - 800. Specifically, the water-soluble polyol esters are selected from two or three of trimethylolpropane oleate, neopentyl glycol laurate, and sorbitol palmitate.

[0022] Specifically, the higher alcohols are selected from two or three of tetradecanol, hexadecanol, or octadecanol, and the isomeric alcohols are selected from two or three of 2-ethylhexanol, isooctanol, or isodecanol.

[0023] Specifically, a preparation method of a post-anode cutting fluid is prepared according to the raw materials of a post-anode cutting fluid and their weight ratios as described above, and includes the following preparation steps: Step 1. Raw material pretreatment: Weigh polyol derivatives, polyol polymers, water-soluble polyol esters, higher alcohols, isomeric alcohols, and deionized water according to the formula ratio, and melt the polyol derivatives and polyol polymers; Step 2. Oil phase mixing: Transfer the melted polyol derivatives and polyol polymers to a reaction kettle, and successively add higher alcohols, isomeric alcohols, and water-soluble polyol esters. The temperature of the reaction kettle is controlled between 60 - 65 °C, and it is stirred at a speed of 400 - 600 r / min for 20 - 30 min to form a uniform oil phase mixture; Step 3. Water phase emulsification: Add deionized water to the reaction kettle, raise the temperature by 10 - 15 °C, switch to a high-speed homogenizer, and increase the speed for emulsification to form a stable emulsion; Step 4. pH adjustment: Lower the temperature of the emulsion to 35 - 40 °C, add a pH regulator, adjust the pH range, and continuously stir to obtain a homogeneous solution to ensure the homogeneity of the system. Step 5. Filtration and detection: Pass the homogeneous solution through a precision filter to remove impurities, take samples for detection, so that the final relative density of the solution is between 1.0 ± 0.1, and the pH value is maintained between 6.0 - 8.0, obtaining a light yellow transparent cutting fluid. The detection items also include indicators such as appearance, viscosity, and stability to ensure that the product quality meets the standards. Step 6. Packaging and storage: Fill the light yellow transparent cutting fluid into a corrosion-resistant container, store it at a temperature below 30 °C, and in a ventilated warehouse without acidic substances, and be equipped with anti-leakage emergency equipment, neutralizing agents, and adsorption materials.

[0024] Specifically, for the raw material pretreatment in Step 1: Place the polyol derivative and the polyol polymer in a water bath at 60 - 70 °C for 20 - 30 min, preheat until completely melted. The melting process is carried out under nitrogen protection. Increase nitrogen protection and time control to prevent the oxidation and degradation of polyols and improve the activity of the raw materials.

[0025] Specifically, for the water phase emulsification conditions in Step 3: Control the feeding speed of deionized water to be 0.5 - 1.0 L / min, and add deionized water in a gradient heating manner. When adding 50% of the water volume for the first time, heat up to 65 - 70 °C. The remaining 50% of the water volume is added in two times, with an interval of 3 - 5 min each time, and the final temperature reaches 75 - 80 °C. Adjust the homogenizer speed in two stages. The speed is 1400 - 1500 r / min in the first 15 min, and then increased to 1500 - 1600 r / min in the next 25 min. During the emulsification process, it is necessary to keep the temperature stable to prevent local overheating from causing emulsion stratification. Through gradient water addition and staged homogenization, avoid the risk of emulsion demulsification and ensure a uniform particle size distribution (D90 ≤ 5 μm).

[0026] The advantages are as follows: By optimizing the raw material ratio range, controlling the polyol derivative between 30% and 60%, and controlling the polyol polymer between 10% and 30%, and adopting nitrogen protection for melting in the raw material pretreatment stage, controlling the temperature and speed during the oil phase mixing, and using gradient water addition and staged homogenization during the water phase emulsification, the prepared cutting fluid shows excellent performance in terms of appearance, stability, rust prevention, and lubrication. And the finally prepared cutting fluid has a light yellow transparent appearance, no stratification after being placed at 40 °C for 48 hours, no rust spots after 24 hours of rust prevention, a low friction coefficient, and a particle size D90 ≤ 5 μm. It not only effectively improves the processing efficiency and quality of the cutting fluid, but also reduces equipment wear and maintenance costs.

[0027] Specifically, in the pH adjustment process of Step 4: Lower the temperature of the emulsion to between 30 - 40 °C, add triethanolamine or borate buffer as a pH regulator, adjust the pH of the solution to between 6.5 - 7.5, and then continue stirring for 10 - 20 min to ensure the uniformity of the solution system. During the stirring process, the pH value needs to be regularly detected to ensure that the pH value is stably within the target range. Among them, triethanolamine and borate buffer form a composite system with a mass ratio of 1:2, and the addition amount of the system is 0.5% - 1.0% of the total mass of the emulsion. After adjustment, let it stand for 10 min for a second pH remeasurement, and the deviation should be ≤0.2. The composite pH regulator enhances the buffering capacity, and standing and remeasuring ensure the long-term stability of the system.

[0028] The advantages are as follows: By using a composite system composed of triethanolamine and borate buffer with a mass ratio of 1:2 as a pH regulator, controlling its addition amount and the pH range after adjustment, and then through the steps of standing and remeasuring, the present invention realizes the precise control of the pH value of the cutting fluid, stabilizing the pH value of the cutting fluid between 6.8 - 7.2. Such a slightly alkaline environment can effectively prevent metal corrosion during processing, and avoid problems such as emulsion demulsification and reduced lubricity caused by too high or too low pH, thereby prolonging the service life of the cutting fluid, improving its safety in practical applications, and reducing economic losses caused by cutting fluid deterioration or processing problems.

[0029] Specifically, the filtration conditions in Step 5 are as follows: Pass the homogeneous solution through a 5 - 10 μm precision filter to remove impurities, control the filtration pressure at 0.2 - 0.5 MP, place the cutting fluid in a 40 °C constant temperature oven for 48 hours, and if there is no stratification or precipitation, it is considered qualified. Quantify the filtration pressure to avoid filter membrane blockage, clarify the detection method and determination criteria, and meet the ISO cutting fluid performance specification.

[0030] The advantages are as follows: In the final stage of the preparation process, by using a 5 - 10 μm precision filter and controlling the filtration pressure at 0.2 - 0.5 MPa, the present invention can effectively remove impurities in the cutting fluid and ensure its purity. At the same time, place the cutting fluid in a 40 °C constant temperature oven for 48 hours for stability detection, and strictly detect indicators such as relative density, pH value, appearance, and viscosity. Only products that meet all the standards will be considered qualified. Such a strict filtration and detection process ensures the stability and consistency of the cutting fluid quality from the source, enabling each batch of products to meet the expected performance requirements, which helps to improve the stability of the user's production process and the controllability of product quality.

[0031] Example 1 Raw material ratio: polyol derivative (glyceryl monostearate) 35%; polyol polymer (polyethylene glycol 800) 25%; water-soluble polyol ester (trimethylolpropane oleate + neopentyl glycol laurate) 10%; higher alcohol (cetyl alcohol + stearyl alcohol) 8%; isomeric alcohol (isooctyl alcohol + isodecanol) 9%; the balance is deionized water.

[0032] Preparation process S1. Pretreatment: The polyol derivative and polyethylene glycol 800 are melted at 70 °C for 25 min under nitrogen protection; S2. Oil phase mixing: Stir at a speed of 500 r / min for 25 min at a temperature of 65 °C; S3. Aqueous phase emulsification: Gradually add water at a rate of 0.8 L / min. The homogenizer is homogenized at a speed of 1500 r / min for the first 15 min and at a speed of 1600 r / min for the next 25 min; S4. pH adjustment: Add triethanolamine + borate buffer in a mass ratio of 1:2, with a total addition amount of 0.8%, to make the solution pH = 7.0; S5. Filtration: Filter the obtained final solution under a pressure of 0.3 MPa through a 5-μm filter membrane.

[0033] Example 2 Raw material ratio: polyol derivative (pentaerythritol oleate) 40%; polyol polymer (polypropylene glycol 600) 20%; water-soluble polyol ester (sorbitol palmitate + neopentyl glycol laurate) 12%; higher alcohol (tetradecyl alcohol + cetyl alcohol) 9%; isomeric alcohol (2-ethylhexanol + isooctyl alcohol) 8%; the balance is deionized water.

[0034] Preparation process S1. Pretreatment: The polyol derivative and polypropylene glycol 600 are melted at 65 °C for 30 min under nitrogen protection; S2. Oil phase mixing: Stir at a speed of 600 r / min at a temperature of 60 °C for 20 min; S3. Aqueous phase emulsification: Gradually add water at a rate of 1.0 L / min. The homogenizer is homogenized at a speed of 1400 r / min for the first 15 min and at a speed of 1550 r / min for the next 25 min; S4. pH adjustment: Add triethanolamine + borate buffer in a mass ratio of 1:2, with a total addition amount of 1.0%, to control the pH to 7.2; S5. Filtration: Filter the obtained final solution under a pressure of 0.4 MPa through a 10-μm filter membrane.

[0035] Example 3 Raw material ratio: polyol derivative (glycerol monostearate + pentaerythritol oleate) 50%; polyol polymer (polyethylene glycol 1000) 30%; water-soluble polyol ester (trimethylolpropane oleate + sorbitol palmitate) 15%; higher alcohol (stearyl alcohol) 10%; isomeric alcohol (isooctanol + isodecanol) 5%; the balance is deionized water.

[0036] Preparation process S1. Pretreatment: The polyol derivative and polyethylene glycol 1000 are melted at 70 °C for 20 min under nitrogen protection; S2. Oil phase mixing: Stir at a speed of 400 r / min at a temperature of 65 °C for 30 min; S3. Aqueous phase emulsification: Gradually add water at a speed of 0.5 L / min. Homogenize at a speed of 1500 r / min for the first 15 min and at a speed of 1600 r / min for the next 25 min in the homogenizer; S4. pH adjustment: Add triethanolamine + borate buffer solution in a mass ratio of 1:2, with a total addition amount of 0.5% to make the solution pH = 6.8; S5. Filtration: 8 μm filter membrane, pressure 0.2 MPa.

[0037] Comparative example 1 Raw material ratio: polyol derivative: glycerol monostearate (20%); polyol polymer: polyethylene glycol 800 (40%); water-soluble polyol ester: trimethylolpropane oleate (5%); higher alcohol: cetyl alcohol (5%); isomeric alcohol: isooctanol (5%); the balance is deionized water.

[0038] Preparation process T1. Pretreatment: Without nitrogen protection, melt at a temperature of 80 °C for 15 min; T2. Oil phase mixing: Stir at a speed of 800 r / min at a temperature of 70 °C for 10 min; T3. Aqueous phase emulsification: Add water all at once, and keep the homogenizer at 1500 r / min; T4. pH adjustment: Use triethanolamine to adjust the pH, with an addition amount of 1.5%, and measure the solution pH = 8.5; T5. Filtration: Do not control the pressure of the solution and filter directly.

[0039] Comparative example 2 Raw material ratio: polyol derivative: pentaerythritol oleate (60%); polyol polymer: polypropylene glycol 400 (10%); water-soluble polyol ester: neopentyl glycol laurate (15%); higher alcohol: myristyl alcohol (10%); isomeric alcohol: isodecanol (10%); the balance is deionized water.

[0040] Preparation process T1. Pretreatment: Melt the polyol derivative and polypropylene glycol 400 in air at 60 °C for 40 min; T2. Oil phase mixing: Stir at 300 r / min at 50 °C for 40 min; T3. Aqueous phase emulsification: Gradually add water without temperature control, and the homogenizer speed is 1200 r / min; T4. pH adjustment: Use borate buffer solution for pH adjustment, and the addition amount is 2.0%. The measured pH of the solution is 5.5; T5. Filtration: Do not use a precision filter.

[0041] Comparative Example 3 Raw material ratio: Polyol derivative: Glyceryl monostearate (35%); Polyol polymer: Polyethylene glycol 600 (25%); Water-soluble polyol ester: Sorbitan palmitate (10%); Higher alcohol: Cetyl alcohol (8%); Isoalcohol: Isooctyl alcohol (9%); The balance is deionized water.

[0042] Preparation process T1. Pretreatment: The melting time is 10 min; T2. Oil phase mixing: Stir the oil phase at room temperature; T3. Aqueous phase emulsification: Perform homogenization treatment at a speed of 1000 - 1800 r / min; T4. pH adjustment: The measured pH of the solution is 7.0, with a deviation of ±0.5; T5. Filtration: Pass through the filter membrane under an environment with a pressure of 0.8 MPa.

[0043] Prepare the raw material formulas of the above examples and comparative examples using their corresponding preparation processes, compare the performances of the obtained cutting fluids, and obtain Table 1: Table 1

[0044] It can be obtained from Table 1 that Examples 1 - 3 all meet the requirements of pH 6.0 - 8.0 and relative density 1.0 ± 0.1, and have excellent stability, rust prevention, and lubricity, and D90 ≤ 5 μm; while in Comparative Example 1, due to excessive alkaline components, corrosion occurred, and insufficient emulsification led to precipitation; in Comparative Example 2, due to excessive acidity, the lubricity was damaged, and lack of temperature control led to stratification; in Comparative Example 3, due to process fluctuations, the particle size increased and the lubricity decreased.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anode post-cutting fluid, characterized in that, The raw materials of the cutting fluid and their weight ratios are as follows: polyol derivatives 30% - 60%; polyol polymers 10% - 30%; water-soluble polyol esters 5% - 15%; higher alcohols 5% - 10%; isomeric alcohols 5% - 10%; the balance is deionized water.

2. The post-cutting fluid for anodes according to claim 1, wherein: The raw materials of the cutting fluid and their weight ratios are as follows: polyol derivatives 35%; polyol polymers 25%; water-soluble polyol esters 10%; higher alcohols 8%; isomeric alcohols 9%; the balance is deionized water.

3. The post-cutting fluid for anodes according to claim 1, characterized in that: The polyol derivatives are selected from one of glycerol monostearate or pentaerythritol oleate, and the polyol polymers are selected from one of polyethylene glycol 600 - 1000 or polypropylene glycol 400 - 800.

4. The post-cutting fluid for anodes according to claim 1, characterized in that: The water-soluble polyol esters are selected from two or three of trimethylolpropane oleate, neopentyl glycol laurate, and sorbitol palmitate.

5. A post-anode cutting fluid according to claim 1, characterized in that: The higher alcohols are selected from two or three of tetradecanol, hexadecanol, or octadecanol, and the isomeric alcohols are selected from two or three of 2-ethylhexanol, isooctanol, or isodecanol.

6. A preparation method of post-anode cutting fluid, characterized in that, Prepared according to the raw materials of an anode post-cutting fluid and their weight ratios described in claim 1, including the following preparation steps: Step 1. Raw material pretreatment: Weigh polyol derivatives, polyol polymers, water-soluble polyol esters, higher alcohols, isomeric alcohols, and deionized water according to the formula ratio, and melt the polyol derivatives and polyol polymers. Step 2. Oil phase mixing: Transfer the melted polyol derivatives and polyol polymers to a reaction kettle, and sequentially add higher alcohols, isomeric alcohols, and water-soluble polyol esters. Control the temperature in the reaction kettle between 60 - 65°C, and stir at a speed of 400 - 600 r / min for 20 - 30 min to form a uniform oil phase mixture. Step 3. Water phase emulsification: Add deionized water to the reaction kettle, raise the temperature by 10 - 15°C, switch to a high-speed homogenizer, and increase the speed for emulsification to form a stable emulsion. Step 4. pH adjustment: Lower the temperature of the emulsion to 35 - 40°C, add a pH regulator, adjust the pH range, and continuously stir to obtain a homogeneous solution. Step 5. Filtration and detection: Pass the homogeneous solution through a precision filter, take samples for detection, so that the final relative density of the solution is between 1.0 ± 0.1, and the pH value is maintained between 6.0 - 8.0 to obtain a light yellow transparent cutting fluid. Step 6. Packaging and storage: Fill the light yellow transparent cutting fluid into a corrosion-resistant container, store it at a temperature below 30°C, and in a ventilated warehouse without acidic substances, and be equipped with anti-leakage emergency equipment, neutralizing agents, and adsorption materials.

7. The preparation method of a post-anode cutting fluid according to claim 6, characterized in that: For the raw material pretreatment in step 1: Place the polyol derivatives and polyol polymers in a water bath at 60 - 70°C for 20 - 30 min, preheat until completely melted, and the melting process is carried out under nitrogen protection.

8. The preparation method of a post-anode cutting fluid according to claim 6, characterized in that: The aqueous phase emulsification conditions in Step 3: Control the addition rate of deionized water to be 0.5 - 1.0 L / min, and add deionized water in a gradient heating manner. When 50% of the water volume is added for the first time, heat up to 65 - 70 °C. The remaining 50% of the water volume is added in two portions, with an interval of 3 - 5 min each time, and the final temperature reaches 75 - 80 °C. Adjust the speed of the homogenizer in two stages. The speed is 1400 - 1500 r / min for the first 15 min, and then increased to 1500 - 1600 r / min for the next 25 min.

9. The preparation method of a post-anode cutting fluid according to claim 6, characterized in that: The pH adjustment process in Step 4: Lower the temperature of the emulsion to between 30 - 40 °C, add triethanolamine or borate buffer solution as a pH regulator, adjust the pH of the solution to between 6.5 - 7.5, and then continue stirring for 10 - 20 min.

10. The preparation method of a post-anode cutting fluid according to claim 6, characterized in that: The filtration conditions in Step 5 are: Pass the homogeneous solution through a 5 - 10 μm precision filter to remove impurities, and control the filtration pressure at 0.2 - 0.5 MPa.

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