High-performance copper alloy rolling liquid with strong hard water resistance and miscellaneous oil resistance and preparation method of high-performance copper alloy rolling liquid

Abstract

The invention relates to the technical field of copper alloy rolling liquid, and mainly discloses high-performance copper alloy rolling liquid with strong hard water resistance and miscellaneous oil resistance and a preparation method of the high-performance copper alloy rolling liquid. The high-performance copper alloy rolling liquid with strong hard water resistance and miscellaneous oil resistance comprises the following components in percentage by mass: 76-83% of base oil, 1-2% of an antioxidant, 3-4% of an oiliness agent, 5-8% of an anti-wear reagent at extreme pressure, 7-10% of an emulsifier and 0.1-0.5% of an alkaline agent. The high-performance copper alloy rolling liquid with strong hard water resistance and impurity oil resistance provided by the invention has extremely strong stability, can cope with various severe process environments, can effectively cope with environments possibly mixed with hard water and impurity oil, and can keep good oil performance for a long time so as to facilitate copper alloy rolling.

Description

Technical Field

[0001] The present application relates to the technical field of copper alloy rolling fluid, and mainly to a high-performance copper alloy rolling fluid that is highly resistant to hard water and foreign oil, and a preparation method thereof. Background Art

[0002] There are many uncontrollable environmental factors in the use of copper alloy processing fluid, such as hardening of water for mixing, dirty liquid tank, mixing of miscellaneous oils such as hydraulic oil of rolling mill, etc. Therefore, a stable copper alloy rolling fluid is needed to solve the above problems. Rolling fluid with poor stability is prone to chemical changes during use, resulting in deterioration and odor, which will not only affect the rolling effect, but also damage the rolling mill and rolled materials; the lubrication performance of rolling fluid with insufficient stability may be affected, resulting in increased friction and energy consumption during the rolling process, and also affecting the surface quality of copper materials; an important function of rolling fluid is to cool the rollers and rolled materials. If the stability is not good, its cooling effect may be greatly reduced, so that the heat generated during the rolling process cannot be dissipated in time, thereby affecting the rolling efficiency and product quality; unstable rolling fluid may contain some harmful components to the rolling mill, which will corrode the parts of the rolling mill and shorten the service life of the rolling mill; the stability problem of rolling fluid may also lead to instability of the rolling process, making the thickness, width and other dimensions of the rolled copper uneven, affecting the quality and consistency of the product.

[0003] Therefore, a qualified copper alloy rolling fluid needs to have the following characteristics: (1) It has good extreme pressure and anti-wear properties to ensure the smoothness and cleanliness of the rolled plate and the surface after rolling; (2) It has good anti-corrosion and anti-rust properties to ensure that the rolling mill equipment and the strip storage are not corroded; (3) It has good cleaning properties. The rolling fluid will not produce precipitates during use. It is compatible with hydraulic oil and gear oil. It will not change performance or produce defects such as dirty prints due to a small amount of leakage of miscellaneous oil; (4) It has good cooling performance. It can quickly take away the heat generated during the rolling process, reduce the temperature of the rolls and rolled pieces, and prevent the oxidation and discoloration of the copper strip caused by excessive temperature. (5) It has good high-temperature stability. During the rolling process, a large amount of heat is generated due to high-speed rolling. The rolling fluid needs to be able to remain stable at high temperatures without failure or deterioration.

[0004] Referring to the currently disclosed information of Chinese invention patents CN103756768A, CN105255573A, CN104342274A, CN103756768A, etc., the copper alloy rolling fluid introduced has the following problems: (1) The long-term stability is poor and it is easily affected by environmental factors such as temperature, pH, and water quality, causing decomposition or precipitation, resulting in a decrease in the performance of the rolling fluid; (2) The use of TX series emulsifiers may be defined as environmental hormones, which have a certain impact on the environment. If such emulsifiers remain in the copper rolling fluid, it will affect the lubrication and cooling performance, and even corrode the rollers and copper materials. In severe cases, it will cause skin allergies in factory workers. The copper alloy processing fluid scheme described in the existing public information is not conducive to the environmental protection and green development of my country's manufacturing industry, and cannot ensure high lubricity and good cooling performance in the rolling process. Moreover, the reason for the above two problems is that these copper alloy processing fluid solutions fail to meet the national environmental protection requirements for the characteristics of copper metal materials and the characteristics of the rolling process, and fail to formulate according to the properties of additives, and fail to consider the long-term service life of the rolling fluid. Therefore, it is necessary to develop a high-performance copper alloy rolling fluid with good stability and strong resistance to hard water and foreign oil. Therefore, the existing technology needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a high-performance copper alloy rolling fluid that is highly resistant to hard water and foreign oil and a preparation method thereof, aiming to solve the problems of insufficient long-term stability of the existing copper alloy rolling fluid and the easy residual corrosion of the TX emulsifier used.

[0006] The technical solution of this application is as follows: In a first aspect, the present application provides a high-performance copper alloy rolling liquid that is highly resistant to hard water and foreign oil, wherein the liquid comprises the following components, calculated by mass percentage: Base oil 76-83%, antioxidant 1-2%, oiliness agent 3-4%, extreme pressure anti-wear agent 5-8%, emulsifier 7-10%, alkaline agent 0.1-0.5%.

[0007] The high-performance copper alloy rolling fluid with strong resistance to hard water and foreign oil provided in the present application has extremely strong stability, can cope with various harsh process environments, can effectively cope with environments that may be mixed with hard water and foreign oil, and can maintain good oil performance for a long time to facilitate copper alloy rolling.

[0008] Furthermore, the base oil is a combination of 24° palm oil, coconut oil and transformer oil, and the mass ratio of the 24° palm oil, coconut oil and transformer oil is 9:2:5.

[0009] Furthermore, the antioxidant is one or more of aromatic amine antioxidants, hindered phenol antioxidants and thio-auxiliary antioxidants.

[0010] Furthermore, the hindered phenol antioxidant is alkyl bicyclohexyl cresol and high molecular weight hindered phenol, and the aromatic amine antioxidant is oleoyl sarcosine.

[0011] Furthermore, the antioxidant is a combination of the alkyl biscyclohexyl cresol, high molecular weight hindered phenol and oleoyl sarcosine, and the mass ratio of the alkyl biscyclohexyl cresol, high molecular weight hindered phenol and oleoyl sarcosine is 5:6:6.

[0012] Furthermore, the oiliness agent is a combination of vegetable oleic acid and 165C polyester, and the mass ratio of the vegetable oleic acid to the 165C polyester is 2:1.

[0013] Furthermore, the extreme pressure anti-wear agent is a combination of alkyl phosphate amine salt, fatty acid polyglycol ether phosphate ester, phosphate amine compound and sulfurized fatty acid ester, and the mass ratio of the alkyl phosphate amine salt, fatty acid polyglycol ether phosphate ester, phosphate amine compound and sulfurized fatty acid ester is 2:2:3:1.

[0014] Furthermore, the emulsifier is a combination of fatty alcohol ether carboxylate Geropon HW15, fatty alcohol polyoxyethylene ether and Span-80, and the mass ratio of fatty alcohol ether carboxylate Geropon HW15, fatty alcohol polyoxyethylene ether and Span-80 is 5:5:4.

[0015] Furthermore, the alkaline agent is dicyclohexylamine.

[0016] In a second aspect, the present application further provides a method for preparing a high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil as described in the first aspect, wherein the method comprises the following steps: Add the base oil into the container and mix, stirring at 55-60℃ until it becomes clear and transparent; Add oiliness agent and stir at 55-60℃ until it becomes clear and transparent; Add antioxidant and stir at 55-60℃ until it becomes clear and transparent; Then add extreme pressure anti-wear agent and stir at 55-60℃ until it becomes clear and transparent; Add emulsifier and stir at 55-60℃ until it becomes clear and transparent; Then, an alkaline agent is added, and the mixture is stirred at 55-60° C. until the mixture becomes clear and transparent, thereby obtaining the high-performance copper alloy rolling liquid that is highly resistant to hard water and foreign oil.

[0017] Beneficial effects: The high-performance copper alloy rolling fluid with strong resistance to hard water and foreign oil provided in the present application has extremely strong stability, can cope with various harsh process environments, can effectively cope with environments that may be mixed with hard water and foreign oil, and can maintain good oil performance for a long time to facilitate copper alloy rolling. DETAILED DESCRIPTION

[0018] The present application provides a high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil and a preparation method thereof. In order to make the purpose, technical scheme and effect of the present application clearer and more specific, the present application is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0019] The present application provides a high-performance copper alloy rolling liquid that is highly resistant to hard water and foreign oil, wherein the liquid comprises the following components, calculated by mass percentage: Base oil 76-83%, antioxidant 1-2%, oiliness agent 3-4%, extreme pressure anti-wear agent 5-8%, emulsifier 7-10%, alkaline agent 0.1-0.5%.

[0020] The high-performance copper alloy rolling fluid with strong resistance to hard water and foreign oil provided in the present application has extremely strong stability, can cope with various harsh process environments, can effectively cope with environments that may be mixed with hard water and foreign oil, and can maintain good oil performance for a long time to facilitate copper alloy rolling.

[0021] Specifically, the high-performance copper alloy rolling fluid with strong resistance to hard water and foreign oil provided in the present application can be diluted and emulsified into a working fluid before use, and the mass proportion of the high-performance copper alloy rolling fluid with strong resistance to hard water and foreign oil in the working fluid is 2%-5%.

[0022] Further, the base oil is a combination of 24° palm oil, coconut oil and transformer oil, and the mass ratio of 24° palm oil, coconut oil and transformer oil is 9:2:5.

[0023] In the present application, by compounding mineral oil and vegetable oil as base oil, the advantages of both can be integrated to provide more comprehensive performance for the rolling process of copper alloy. Transformer oil is mainly derived from petroleum fractions, obtained by refining and processing, and has good lubrication performance and stability, which is determined by its composition characteristics. Its molecular structure is stable, and the base oil transformer oil can provide continuous lubrication effect in the metal processing process, reducing friction and wear. The selected 24 ° palm oil and coconut oil have excellent biodegradability and renewability, which meets the requirements of current environmental protection and sustainable development. Moreover, 24 ° palm oil and coconut oil are derived from natural plants, and their molecular structures contain natural lubricating components, so that the lubricating oil of the vegetable oil system performs well in occasions such as large rolling force processing, high-speed cutting, precision processing, etc., and its biodegradability also means that the impact on the environment is small during waste treatment. Therefore, the base oil combination of the present application uses 24 ° palm oil, coconut oil and transformer oil in a compound manner, which can combine the advantages of each raw material, and such a compounded base oil combination has both the good lubrication performance and stability of mineral oil and the excellent biodegradability and renewability of vegetable oil.

[0024] More specifically, 24° palm oil is a high-quality lubricant that can exhibit good lubrication and antioxidant properties during the rolling process; coconut oil has a high proportion of medium-chain saturated fatty acids and small molecules, and has good permeability, stability and antibacterial properties; 24° palm oil and coconut oil are used to improve the lubrication distribution effect, and at the same time, good permeability enables the oil to penetrate into the contact surface between the roller and the copper alloy, providing deep lubrication. At the same time, combined with transformer oil with extremely high thermal conductivity, it can quickly transfer heat between the rollers, achieve rapid cooling, reduce thermal deformation, and avoid oxidation caused by accumulated heat or affect the lubrication properties of the oil.

[0025] Furthermore, the antioxidant is one or more of aromatic amine antioxidants, hindered phenol antioxidants and thio-auxiliary antioxidants; the hindered phenol antioxidants are alkyl dicyclohexyl cresol and high molecular weight hindered phenol; the aromatic amine antioxidant is oleoyl sarcosine.

[0026] In the present application, the use of antioxidants can significantly inhibit the oxidation reaction of oils and fats, effectively prevent the rolling fluid from deteriorating due to oxidation, enhance the stability of the rolling fluid, enable it to maintain excellent performance under various external factors, and further extend the service life of the oil. At the same time, the use of antioxidants can also effectively increase the initial oxidation temperature of the rolling fluid.

[0027] Furthermore, the antioxidant is a combination of alkyl biscyclohexyl cresol, high molecular weight hindered phenol and oleoyl sarcosine, and the mass ratio of alkyl biscyclohexyl cresol, high molecular weight hindered phenol and oleoyl sarcosine is 5:6:6.

[0028] In the present application, the preferred antioxidant combination not only has high physical and chemical stability, can delay the oxidation and deterioration of the rolling fluid and thus extend its storage time, but also has excellent extreme pressure performance, greatly improves the lubricity of the oil, and can also be used as an extreme pressure anti-wear agent and metal corrosion inhibitor.

[0029] Specifically, antioxidants mainly inhibit oxidation reactions by capturing free radicals. The alkyl substituents of alkylbiscyclohexyl cresol can quickly react with free radicals to prevent free radicals from further initiating oxidation chain reactions, thereby inhibiting the oxidation reaction. When oil products are affected by external factors such as oxygen and light and produce free radicals, they can react with these free radicals to neutralize their activity and prevent them from initiating a chain reaction of oxidation reactions. High molecular weight hindered phenol antioxidants have good compatibility with organic materials and are suitable as antioxidant stabilizers for various polymers and organic materials. Moreover, high molecular weight hindered phenol antioxidants have good compatibility with alkylbiscyclohexyl cresol. The combination of the two not only achieves high-efficiency antioxidant slow-release performance, but also enhances the stability of the system, so they are used in combination. Oleoyl sarcosine is an amphoteric organic compound and a multi-purpose surfactant that can be used as an antioxidant, emulsifier, stabilizer and lubricant; therefore, its role in this formula system can not only provide rust prevention, slow-release and antioxidant properties, but also promote emulsification, maintain the stability of the emulsion, and contribute to the emulsion's resistance to hard water and foreign oil.

[0030] Furthermore, the oiliness agent is a combination of vegetable oleic acid and 165C polyester, and the mass ratio of the vegetable oleic acid to the 165C polyester is 2:1.

[0031] In the present application, by using vegetable oleic acid and 165C polyester with polar groups at the ends of hydrocarbon chains as an oiliness agent combination, it has a strong affinity for metals and can be adsorbed on the friction surface through the polar groups therein to form a molecular oriented adsorption film, preventing metals from contacting each other, thereby reducing friction and wear. Specifically, the selected vegetable oleic acid has good lubrication and negative load-bearing capacity, but slightly poor antioxidant and low-temperature flow performance. By using 165C polyester, the present application has better high temperature resistance, antioxidant, hydrolysis resistance and other properties compared to other oiliness agents, and improves the comprehensive performance of the oiliness agent after compounding.

[0032] Furthermore, the extreme pressure anti-wear agent is a combination of alkyl amine phosphate, fatty acid polyglycol ether phosphate, phosphate amine compounds, and sulfurized fatty acid esters, and the mass ratio of alkyl amine phosphate, fatty acid polyglycol ether phosphate, phosphate amine compounds, and sulfurized fatty acid esters is 2:2:3:1.

[0033] Specifically, during the rolling process, great pressure and friction will be generated between the metal surfaces, which requires the rolling fluid to provide good lubrication performance. The extreme pressure anti-wear agent combination selected in this application can form a lubricating film on the surface of the copper alloy, reduce the friction coefficient, thereby reducing frictional heat and wear, which can not only protect the copper alloy surface from being scratched or worn, but also improve the stability and efficiency of the rolling process. Moreover, the alkyl phosphate amine salts, fatty acid polyglycol ether phosphates, and phosphoric acid amine compounds used have wear resistance, and the sulfurized fatty acid esters used have extreme pressure properties. The phosphorus-containing and sulfur-containing compounds are effectively compounded and used, and the extreme pressure anti-wear performance will be better. The advantage of alkyl amine phosphate is that it is less corrosive to metals than other extreme pressure agents, or even has no corrosion, so it provides lubricity while also having slow-release properties; fatty acid polyglycol ether phosphate is a phosphate formed by the polymerization of fatty acid polyglycol ethers, which has both emulsification and lubricity, and can be used as both an extreme pressure anti-wear agent and an anti-hard water emulsifier, and it can maintain hydrolysis stability in an environment of pH>3; amine phosphate compounds and sulfided fatty acid esters mainly play a role in enhancing extreme pressure anti-wear properties. The lubrication effect is best when used in combination in the provided ratio. In addition, the extreme pressure anti-wear agent combination can also improve the carrying capacity of the rolling fluid, and can maintain good lubrication properties under extreme conditions such as high pressure and high temperature, ensuring the smooth progress of the rolling process.

[0034] Furthermore, the emulsifier is a combination of fatty alcohol ether carboxylate Geropon HW15, fatty alcohol polyoxyethylene ether and Span-80, and the mass ratio of fatty alcohol ether carboxylate Geropon HW15, fatty alcohol polyoxyethylene ether and Span-80 is 5:5:4.

[0035] Specifically, due to the limitations of production conditions, many copper alloy rolling fluid factories have large liquid tanks, few stirring devices, and use relatively hard water, especially northern factories. Therefore, the property of rolling fluid to emulsify well in hard water is crucial. This application uses fatty alcohol ether carboxylate Geropon HW15, fatty alcohol polyoxyethylene ether and Span-80 to compound in appropriate proportions, which has extremely strong resistance to hard water, can be emulsified in hard water and remain stable. Testing has shown that adding a small amount of rolling oil, hydraulic oil and other miscellaneous oils does not affect its performance. The role of the emulsifier combination in the rolling fluid formula of this application is mainly to allow the rolling fluid to form a more stable and uniform emulsion, so that it can better play the role of lubrication, cooling and the like. Moreover, since the rolling fluid system of this application contains easily corrosive sulfur and phosphorus agents, the emulsifier combination used can also help reduce the corrosion of the rolling fluid to the rollers and workpieces. The fatty alcohol ether carboxylate has strong resistance to hard water and can quickly combine with calcium and magnesium ions to form a stable complex, effectively inhibiting the formation of soap scum; the fatty alcohol polyoxyethylene ether used is a non-ionic surfactant with excellent emulsifying properties, which can evenly disperse the grease and stains in the water and enhance the washing power. At the same time, it can also stabilize the formation of the emulsion and make the emulsion more uniform and delicate; the span-80 used is mild and environmentally friendly, has good biodegradability, and will not cause pollution to water and soil.

[0036] More specifically, the HLB values ​​of fatty alcohol ether carboxylates and fatty alcohol polyoxyethylene ethers are relatively large, and they have good water solubility. However, the ideal self-emulsification effect cannot be achieved by simply compounding with a surfactant with a high HLB value. After adding span80 with a low HLB value, that is, compounding with a surfactant with a high HLB value and a surfactant with a low HLB value, a tighter complex can be formed on the interface to prevent aggregation, thereby improving the stability of the emulsion, thus solving the problem of lack of stirring in the factory and greatly reducing the cost of factory construction. In the formula system of the present application, fatty alcohol ether carboxylates, fatty alcohol polyoxyethylene ethers and span-80 are used as emulsifier combinations, and the emulsification pairs are closely connected, have excellent resistance to foreign oil, are not easily affected by the liquid tank environment, and extend the service life of the rolling fluid. Moreover, span-80 has a better emulsification effect in hard water after compounding with fatty alcohol polyoxyethylene ethers, and as the on-site situation changes, the water quality becomes increasingly hard, the amount of iron powder and foreign oil in the liquid tank increases, and the hard water emulsification is more stable.

[0037] The alkaline agent is dicyclohexylamine. The formulation system of the present application selects dicyclohexylamine as the alkaline agent, which can stabilize the pH of the rolling fluid, prevent it from decomposing and precipitating, ensure the life of the rolling fluid, and also facilitate the stable use of the rolling fluid at different pH values ​​and temperatures.

[0038] Specifically, dicyclohexylamine is mainly used to adjust the pH value, which can keep the pH value of the emulsion at more than 6.0. The appropriate pH value helps to maintain the stability of the rolling fluid and prevent some harmful chemical reactions from occurring. By adjusting the pH value, dicyclohexylamine can improve the lubrication performance of the rolling fluid to a certain extent, reduce the friction resistance during the rolling process, and maintain an alkaline environment that is conducive to inhibiting the formation of iron oxide scale on the rolling equipment, thereby reducing the defects on the surface of the copper alloy rolled material and improving the quality of the product. Dicyclohexylamine can also precipitate some acidic impurities, which helps to keep the rolling fluid clean. Moreover, dicyclohexylamine can not only adjust the pH of the emulsion, but also form a protective film with the metal surface when used, further reducing the heat, copper strip wear and corrosion during the processing process.

[0039] The high-performance copper alloy rolling fluid with strong resistance to hard water and foreign oil provided in the present application has extremely strong stability, can cope with various harsh process environments, can effectively cope with environments that may be mixed with hard water and foreign oil, and can maintain good oil performance for a long time to facilitate copper alloy rolling.

[0040] The present application also provides a method for preparing the above-mentioned high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil, which comprises the following steps: Slowly add the base oil into the container and mix, stirring at 55-60℃ until it becomes clear and transparent; Then slowly add the oiliness agent and stir at 55-60℃ until it becomes clear and transparent; Then slowly add antioxidant and stir at 55-60℃ until it becomes clear and transparent; Then slowly add the extreme pressure anti-wear agent and stir at 55-60℃ until it becomes clear and transparent; Then slowly add the emulsifier and stir at 55-60℃ until it becomes clear and transparent; Then slowly add the alkaline agent, stir at 55-60°C until it becomes clear and transparent, and obtain a high-performance copper alloy rolling liquid that is highly resistant to hard water and foreign oil.

[0041] The preparation method provided is simple and efficient, and can be easily adjusted and applied to large-scale production.

[0042] The invention is further described below by means of specific examples.

[0043] 1. Sources of raw materials for the examples and comparative examples of this application: 24° palm oil: Yihai Kerry Golden Dragon Fish Cereals, Oils and Foodstuffs Co., Ltd.; Transformer oil: Foshan Jinjian Lubricant Co., Ltd.; Coconut oil: Yihai Kerry Golden Dragon Fish Cereals, Oils and Foodstuffs Co., Ltd.; Alkyl biscyclohexyl cresol: Zhongshan Yuanda New Materials Co., Ltd.; High molecular weight hindered phenol: Guangzhou Qisheng Trading Co., Ltd.; Oleoylsarcosine: Guangzhou Qisheng Trading Co., Ltd.; Vegetable oleic acid: Shandong Chuangli New Materials Co., Ltd.; 165C polyester: Guangzhou Mickey Chemical Co., Ltd.; Alkyl phosphate amine salts: Solvay Group; Fatty acid polyglycol ether phosphate: Tianjin Haoruisen Chemical Trading Co., Ltd.; Amine phosphate compounds: Vanderbilt Chemical Co., Ltd.; Sulfurized fatty acid esters: Dongguan Hongli Chemical Technology Co., Ltd.; Fatty alcohol ether carboxylate Geropon HW15: Guangzhou Qisheng Trading Co., Ltd.; Fatty alcohol polyoxyethylene ether: Tianjin Haoruisen Chemical Trading Co., Ltd.; Span-80: Haian Petrochemical Plant, Jiangsu Province; Sodium petroleum sulfonate (molecular weight <490): Hai'an Petrochemical Plant, Jiangsu Province; TX-10: Xingtai Xinlanxing Technology Co., Ltd.; Dicyclohexylamine: Shandong Zhuoan Chemical Co., Ltd.; 2. The method for preparing the high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil in the embodiment of the present application comprises the following steps: (1) Slowly add the base oil into a clean beaker and mix, stirring at 55-60°C until the solution is clear and transparent; (2) slowly adding an oiliness agent to the mixed solution obtained in step (1), stirring at 55-60° C. until the solution is uniform and a light yellow clear liquid is obtained; (3) Slowly adding an antioxidant to the mixed solution obtained in step (2), stirring at 55-60° C. until the solution is uniform, and obtaining a light yellow clear liquid; (4) Slowly adding an extreme pressure anti-wear agent to the mixed solution obtained in step (3), stirring at 55-60° C. until the solution is uniform, and obtaining a brown-red clear and transparent liquid; (5) slowly adding an emulsifier to the mixed solution obtained in step (4), stirring at 55-60° C. until the solution is uniform, and obtaining a brown-red clear liquid; (6) Slowly add an alkaline agent to the mixed solution obtained in step (5), and stir at 55-60° C. until the solution is uniform, thereby obtaining a brown-red clear liquid.

[0044] Specifically, the stirring and mixing temperature was 60°C.

[0045] 3. Performance testing method of the embodiment of the present application: (1) The test objects of the present invention are the high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil, the high-performance copper alloy rolling liquid with strong resistance to emulsification and foreign oil, and the rolling liquid of the comparative example.

[0046] (2) The test methods for viscosity, acid value and saponification value at 40°C are as follows: the rolling fluid is tested in accordance with GB / T 265, GB / T 264 and GB / T8021-2003 respectively.

[0047] (3) Emulsion performance testing: pH value, conductivity, emulsion stability and particle size testing methods are used to evaluate the emulsification performance of lubricating oil in accordance with GB 5009.237-2016, GB / T 11007-2008, SH / T 0579-1994 and GB / T 19077-2016 respectively.

[0048] (4) The test method for extreme pressure performance shall be carried out in accordance with GB / T 12583-1998. Tester model: Xiamen Tianji MS-10A.

[0049] (5) The test method for copper corrosion resistance is to test the rolling fluid in accordance with GB / T 5096-2017.

[0050] (6) Trash oil resistance test: L-HM hydraulic oil (used for rolling mill maintenance) was mixed into 2.0% rolling fluid emulsion at a mass ratio of 1%, 2%, 3%, 4% and 5% respectively (the mass ratio of rolling fluid stock solution was 2%), and the emulsion stability was tested in accordance with SH / T 0579-1994.

[0051] (7) Self-emulsification test: Add the rolling fluid concentrate into tap water (conductivity 120 μS / cm, which can be compared with factory tap water) at a ratio of 2%, stir evenly with a glass rod, observe the emulsification of the rolling fluid and record whether there is any floating oil after the emulsion is left to stand for 5 minutes.

[0052] The above preparation method was used to prepare the rolling liquid stock solutions of Example 1, Example 2, Example 3, Example 4, Example 5 and Comparative Example 1 according to the components in Table 1. The component ratios are shown in Table 1: Table 1 Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 24° Palm Oil 45% 45% 45% 45% 44.5% 47% Coconut Oil 10% 10% 10% 10% 10% 10% Transformer oil 25% 25% 25% 25% 25% 25% Alkyl Biscyclohexylphenol 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% High molecular weight hindered phenol 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% Oleoyl Sarcosine 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% Vegetable Oleic Acid 2% 2% 2% 2% 2% 2% 165C Polyester 1% 1% 1% 1% 1% 1% Alkyl phosphate amine salt 2% 2% 2% 2% 2% 2% Fatty acid polyglycol ether phosphate 2% 2% 2% 2% 2% 2% Phosphate amine compounds 3% 3% 3% 3% 3% 3% Sulfurized fatty acid esters 1% 1% 1% 1% 1% 1% Fatty alcohol ether carboxylate Geropon HW15 2.5% 2.5% 2.5% 2.5% - 2% Fatty alcohol polyoxyethylene ether 2.5% - 2.5% - - 2% Span-80 2% 2% - - - 1% Sodium petroleum sulfonate (molecular weight <490) - 2.5% - 2.5% 2.5% - TX-10 - - 2% 2% 5% - Dicyclohexylamine 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% The self-emulsification test results of Example 1, Example 2, Example 3, Example 4, Example 5 and Comparative Example 1 are shown in Table 2: Table 2 sample After stirring Let stand for 5 minutes Example 1 Completely emulsifiable, milky white liquid No obvious oil spill Example 2 Partially emulsified, milky yellow uneven liquid Large amount of oil floating on the upper layer Example 3 Partially emulsified, milky yellow uneven liquid Large amount of oil floating on the upper layer Example 4 Partially emulsified, milky yellow uneven liquid Large amount of oil floating on the upper layer Example 5 Completely emulsifiable, milky white liquid Trace amount of floating oil Comparative Example 1 Completely emulsifiable, milky white liquid No obvious oil spill By comparing the self-emulsification test results, it can be found that Laboratory Example 1, Example 5 and Comparative Example 1 have good self-emulsification properties, can be emulsified in hard water and remain basically stable; the emulsification pairs of Examples 2, 3 and 4 are not leveled, and the self-emulsification properties are relatively poor.

[0053] The physical and chemical properties test results of the rolling liquid stock solutions of Example 1, Example 5 and Comparative Example 1 are shown in Table 3: Table 3 Physical and chemical indicators Example 1 Example 5 Comparative Example 1 <![CDATA[Viscosity at 40°C, mm 2 / s]]> 39.88 40.25 38.25 Acid value, mgKOH / g 6.27 7.52 6.13 Saponification value, mgKOH / g 193.33 194.02 194.56 Anti-copper corrosion 1a 1a 1a From the physical and chemical indicators of the rolling fluid stock solutions of Example 1, Example 5 and Comparative Example 1, the ratio of the base oil and the oiliness agent is reasonable, and the amount of the antioxidant added is reasonable, which can enable the formula to achieve better copper corrosion resistance.

[0054] The physical and chemical properties test results of the emulsions with the original solution mass accounting for 2% of Example 1, Example 5 and Comparative Example 1 are shown in Table 4: Table 4 2% emulsion physical and chemical indicators Example 1 Example 5 Comparative Example 1 pH 6.57 6.99 6.55 Conductivity, μS / cm 131.5 132.1 130.7 ESI, % (emulsion stability) 99.48 89.6 95.21 PSD, μm (particle size) 2.319 2.789 2.512 The test results of ESI show that Example 1 has better static stability at high temperature than Comparative Example 1 and Example 5; the test results of average particle size PSD show that the emulsion particles of Example 1 are more uniformly dispersed than those of Comparative Example 1 and Example 5. That is, the stability of the emulsion using sodium petroleum sulfonate and TX-10 series emulsifier is worse than the stability of the emulsion using fatty alcohol polyoxyethylene ether and span80.

[0055] The results of the anti-trash oil test of the emulsions with the original liquid mass accounting for 2% of Example 1, Example 5 and Comparative Example 1 are shown in Table 5: Table 5 2% emulsion mixed with oil Example 1 Example 5 Comparative Example 1 ESI (1% L-HM hydraulic oil), % 99.34 88.32 94.35 ESI (2% L-HM hydraulic oil), % 99.32 85.29 92.12 ESI (3% L-HM hydraulic oil), % 98.15 82.18 90.88 ESI (4% L-HM hydraulic oil), % 97.52 79.79 89.17 ESI (5% L-HM hydraulic oil), % 96.05 77.21 87.52 By comparing the test results of Example 1, Example 5 and Comparative Example 1 against tramp oil, it can be found that Example 1 has the best compatibility with tramp oil, and the tramp oil does not significantly damage the stability of the emulsion of Example 1.

[0056] The extreme pressure performance test results of the emulsions with the original liquid mass accounting for 2% of Example 1, Example 5 and Comparative Example 1 are shown in Table 6: Table 6 2% emulsion extreme pressure performance Example 1 Example 5 Comparative Example 1 PB,Kg 100 100 100 PD,Kg 160 160 160 By comparing the extreme pressure performance test results of Example 1, Example 5 and Comparative Example 1, it can be found that the lubricant addition ratio in the formulation system of the present application is reasonable, the extreme pressure performance is good, and the copper alloy rolling fluid can meet the lubrication requirements and has high lubrication performance.

[0057] Taking a certain brand of emulsified copper alloy rolling liquid as comparative example 2, the self-emulsification test results of Example 1 and comparative example 2 are shown in Table 7: Table 7 sample After stirring Let stand for 5 minutes Example 1 Completely emulsifiable, milky white liquid No obvious oil spill Comparative Example 2 Completely emulsifiable, milky white liquid No obvious oil spill Both Example 1 and Comparative Example 2 can be completely emulsified, and no obvious floating oil is produced after standing.

[0058] The results of the anti-trash oil test of the emulsions with a mass proportion of 2% of the original liquid of Example 1 and Comparative Example 2 are shown in Table 8: Table 8 2% emulsion mixed with oil Example 1 Comparative Example 2 ESI (1% L-HM hydraulic oil), % 99.34 94.56 ESI (2% L-HM hydraulic oil), % 99.32 92.44 ESI (3% L-HM hydraulic oil), % 98.15 90.57 ESI (4% L-HM hydraulic oil), % 97.52 87.67 ESI (5% L-HM hydraulic oil), % 96.05 84.32 By comparing the test results of anti-trash oil, it can be found that the compatibility of Comparative Example 2 with tramp oil is poorer than that of Example 1, and the tramp oil has a higher degree of damage to the stability of the emulsion of Comparative Example 2.

[0059] The high-performance copper alloy rolling fluid with strong resistance to hard water and foreign oil provided in the present application has extremely strong stability, can cope with various harsh process environments, can effectively cope with environments that may be mixed with hard water and foreign oil, and can maintain good oil performance for a long time to facilitate copper alloy rolling.

[0060] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description, and all these improvements and changes should fall within the scope of protection of the present application.

Claims

1. A high-performance copper alloy rolling fluid with strong resistance to hard water and foreign oil, characterized in that: Calculated by mass percentage, it includes the following components: Base oil 76-83%, antioxidant 1-2%, oiliness agent 3-4%, extreme pressure anti-wear agent 5-8%, emulsifier 7-10%, alkaline agent 0.1-0.5%.

2. The high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil according to claim 1 is characterized in that: The base oil is a combination of 24° palm oil, coconut oil and transformer oil, and the mass ratio of the 24° palm oil, coconut oil and transformer oil is 9:2:

5.

3. The high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil according to claim 1 is characterized in that: The antioxidant is one or more of aromatic amine antioxidants, hindered phenol antioxidants and thio-auxiliary antioxidants.

4. The high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil according to claim 3 is characterized in that: The hindered phenol antioxidant is alkyl bicyclohexyl cresol and high molecular weight hindered phenol, and the aromatic amine antioxidant is oleoyl sarcosine.

5. The high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil according to claim 4 is characterized in that: The antioxidant is a combination of the alkyl biscyclohexyl cresol, high molecular weight hindered phenol and oleoyl sarcosine, and the mass ratio of the alkyl biscyclohexyl cresol, high molecular weight hindered phenol and oleoyl sarcosine is 5:6:

6.

6. The high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil according to claim 1, characterized in that: The oiliness agent is a combination of vegetable oleic acid and 165C polyester, and the mass ratio of the vegetable oleic acid to the 165C polyester is 2:

1.

7. The high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil according to claim 1 is characterized in that: The extreme pressure anti-wear agent is a combination of alkyl amine phosphate, fatty acid polyglycol ether phosphate, phosphate amine compound and sulfurized fatty acid ester, and the mass ratio of the alkyl amine phosphate, fatty acid polyglycol ether phosphate, phosphate amine compound and sulfurized fatty acid ester is 2:2:3:

1.

8. The high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil according to claim 1, characterized in that: The emulsifier is a combination of fatty alcohol ether carboxylate Geropon HW15, fatty alcohol polyoxyethylene ether and Span-80, and the mass ratio of fatty alcohol ether carboxylate Geropon HW15, fatty alcohol polyoxyethylene ether and Span-80 is 5:5:

4.

9. The high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil according to claim 1, characterized in that: The alkaline agent is dicyclohexylamine.

10. A method for preparing a high-performance copper alloy rolling liquid with strong resistance to hard water and foreign oil as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Add the base oil into the container and mix, stirring at 55-60℃ until it becomes clear and transparent; Add oiliness agent and stir at 55-60℃ until it becomes clear and transparent; Add antioxidant and stir at 55-60℃ until it becomes clear and transparent; Then add extreme pressure anti-wear agent and stir at 55-60℃ until it becomes clear and transparent; Add emulsifier and stir at 55-60℃ until it becomes clear and transparent; Then, an alkaline agent is added, and the mixture is stirred at 55-60° C. until the mixture becomes clear and transparent, thereby obtaining the high-performance copper alloy rolling liquid that is highly resistant to hard water and foreign oil.