A water-based aluminum alloy drawing fluid and preparation method thereof

Abstract

The present application relates to the technical field of aluminum alloy processing, and discloses a water-based aluminum alloy drawing fluid and a preparation method thereof, wherein the water-based aluminum alloy drawing fluid comprises, by mass percentage, 10%-20% of an organic base; 5%-15% of a rust inhibitor; 5%-10% of an oiliness agent; 10%-25% of an extreme pressure agent; 0.2%-2% of a corrosion inhibitor; 0.3%-1.8% of a fungicide; 0.05%-0.2% of a defoaming agent; and the balance being deionized water. The present application takes into account the performance requirements of aluminum alloy processing, and in view of the problems of poor lubrication, poor cooling, and high oil consumption of aluminum alloy processing fluids in the prior art, adopts a water-based fully synthetic formula to optimize the cooling performance, thereby improving the smoothness and surface finish of the workpiece, and utilizing the properties of the extreme pressure agent and the oiliness agent to improve the overall lubrication properties. The water-based aluminum alloy drawing fluid thus obtained has the characteristics of high lubrication performance and easy cleaning, and can better meet the processing requirements of aluminum alloys.

Description

Technical Field

[0001] The present application relates to the technical field of aluminum alloy processing, and mainly to a water-based aluminum alloy drawing liquid and a preparation method thereof. Background Art

[0002] Aluminum alloys possess excellent mechanical and chemical properties, primarily in terms of low density, high strength, and high modulus. Aluminum's low density makes it lighter than other metals, weighing only one-quarter that of steel. Therefore, it is suitable for applications requiring lightweighting. Aluminum alloys also possess excellent plasticity and can be processed into various profiles. They also possess excellent electrical and thermal conductivity, making them widely used in industry, second only to steel in terms of usage.

[0003] Common problems encountered during aluminum alloy processing include: 1. Its relatively active chemical properties make it susceptible to corrosion in acidic and alkaline environments; 2. Aluminum alloy has a low melting point, a small elastic modulus, and a soft texture, making it prone to burrs during processing; 3. Aluminum alloy has a high coefficient of thermal expansion, and the enormous heat generated during processing can easily cause workpiece deformation. Therefore, aluminum alloy processing fluids must possess the following characteristics: 1. A relatively mild pH to prevent blackening during processing and enhance brightness; 2. Excellent extreme pressure and wear resistance to maintain lubrication even in high-speed and high-pressure processing environments; 3. Good cooling capacity to prevent thermal expansion of the aluminum workpiece caused by overheating during processing.

[0004] Aluminum alloy processing fluid is generally used after being diluted in a certain proportion, so it needs to have high lubrication performance, as well as certain anti-rust, defoaming and other effects. The aluminum alloy processing fluid proposed in Chinese invention patent CN101696367A is a semi-synthetic processing fluid, in which the addition of a large amount of mineral oil can easily lead to poor cooling performance, and poor temperature rise control can occur during the processing, resulting in problems such as scratches and burrs on the plate surface. The lubricant used therein contains persistent organic pollutants such as chlorinated paraffin, which can easily cause serious harm to processing personnel and the environment with long-term use. The water-based processing fluid proposed in Chinese invention patent CN113583744A does not add bactericides or corrosion inhibitors. During long-term use, the processing fluid is prone to breed bacteria and produce corruption and odor, affecting the processing quality and processing environment. The water-soluble metalworking fluid proposed in Chinese invention patent CN104812879A does not add extreme pressure agents. Under extreme pressure processing conditions, the lubricating effect is insufficient, which can easily damage the processing mold and affect the service life of the mold and the yield rate of the processed parts. The machining fluids introduced in the prior art have the following problems and are difficult to effectively meet the actual machining requirements of aluminum alloy machining: (1) The lubrication and cooling effects are poor, and problems such as scratches and burrs are easily generated on the plate surface during subsequent production, and the surface gloss of the machined parts is low; (2) The machining fluids introduced in the prior art cannot simultaneously take into account the performance of extreme pressure, lubricity and corrosion resistance. The machining fluids introduced in the prior art contain elements such as sulfur and chlorine, which will cause corrosion to the machining materials and molds during the machining process. They cannot be used for a long time in actual machining and cannot effectively guarantee a high yield rate. Therefore, the prior art needs to be improved and developed. It is necessary to comprehensively consider the characteristics of aluminum alloys and the characteristics of the machining process to formulate the formula, adjust the formula according to the on-site working conditions, and design and develop an aluminum alloy machining fluid with high lubricity, high extreme pressure and wear resistance, good cooling, and easy cleaning. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of this application is to provide a water-based aluminum alloy drawing fluid and a preparation method thereof, aiming to solve the problems of poor lubrication, poor cooling, and high oil consumption of aluminum alloy processing fluids in the prior art.

[0006] The technical solution of this application is as follows:

[0007] The present application provides a water-based aluminum alloy drawing liquid, which comprises the following components, calculated by mass percentage:

[0008]

[0009]

[0010] This application takes into account the performance requirements of aluminum alloy processing. To address the problems of poor lubrication, poor cooling, and high oil consumption of aluminum alloy processing fluids in the existing technology, a water-based fully synthetic formula is used to optimize the cooling performance to improve the smoothness and surface finish of the processed parts. The characteristics of extreme pressure agents and oiliness agents are used to improve the overall lubrication properties. Rust inhibitors and other components are reasonably added to ensure the system stability of the processing fluid and improve its biological stability. The resulting water-based aluminum alloy drawing fluid has high lubrication performance and is easy to clean, which can better meet the processing requirements of aluminum alloys.

[0011] Furthermore, the organic base is one or more of monoethanolamine, triethanolamine, diglycolamine, dicyclohexylamine, dimethylamine and tetrahydroxymethylamine;

[0012] The corrosion inhibitor is one or more of mercaptobenzothiazole, benzotriazole, methylbenzotriazole and methylbenzotriazole sodium salt.

[0013] Furthermore, the organic base is triethanolamine; and the corrosion inhibitor is benzotriazole.

[0014] Furthermore, the rust inhibitor is two or more of sebacic acid, tribasic acid, aminosulfonic acid, mixed dibasic acid and neodecanoic acid.

[0015] Furthermore, the triprotic acid is triprotic acid CI-03; the rust inhibitor is a combination of sebacic acid, triprotic acid CI-03, aminosulfonic acid and neodecanoic acid; the mass ratio of sebacic acid, triprotic acid CI-03, aminosulfonic acid and neodecanoic acid is 2:3:2.5:5.

[0016] Furthermore, the oiliness agent is one or more of coconut oleic acid, ricinoleic acid, oleic acid and palmitoleic acid; the extreme pressure agent is one or more of phosphate ester, phosphate ammonium salt, phosphoramide and polyether.

[0017] Furthermore, the oiliness agent is coconut oil acid, and the mass percentage of the coconut oil acid in the water-based aluminum alloy drawing liquid is 5%;

[0018] The polyethers are polyether 17R2 and polyether 17R4;

[0019] The extreme pressure agent is a combination of phosphate ester, polyether 17R2 and polyether 17R4, and the mass ratio of the phosphate ester, polyether 17R2 and polyether 17R4 is 6:10:9.

[0020] Furthermore, the fungicide is one or more of N,N'-methylenebismorpholine, iodopropynyl butylcarbamate, s-triazine, 1-2-benzisothiazolin-3-one and isothiazolinone; the defoamer is one or more of polyvinyl alcohol defoamer, high carbon alcohol defoamer, silicone defoamer and polyether defoamer.

[0021] Furthermore, the fungicide is a combination of N,N'-methylenebismorpholine and butylcarbamate iodopropynyl, and the mass ratio of N,N'-methylenebismorpholine to butylcarbamate iodopropynyl is 1.5:0.3;

[0022] The defoaming agent is organic silicon defoaming agent HP720, and the mass percentage of the organic silicon defoaming agent HP720 in the water-based aluminum alloy drawing liquid is 0.1%.

[0023] The present application also provides a method for preparing the water-based aluminum alloy drawing liquid as described above, which comprises the following steps:

[0024] (1) placing the deionized water in a container, adding the organic base to the deionized water, and stirring thoroughly at 55-60° C. to obtain a clear and transparent mixed solution;

[0025] (2) cooling the mixed solution to below 35° C., adding the extreme pressure agent to the mixed solution, and stirring thoroughly until the mixed solution becomes clear and transparent;

[0026] (3) adding the oiliness agent, the corrosion inhibitor, the bactericide and the defoaming agent to the mixed solution in sequence, stirring until clear and transparent, to obtain the water-based aluminum alloy drawing liquid;

[0027] When the rust inhibitor includes a solid rust inhibitor, the solid rust inhibitor is added together with the organic base; when the rust inhibitor includes a liquid rust inhibitor, the liquid rust inhibitor is added together with the extreme pressure agent.

[0028] The water-based aluminum alloy drawing fluid provided in this application has the following beneficial effects:

[0029] (1) Good lubricity. The extreme pressure agent and oiliness agent in the water-based aluminum alloy drawing fluid can be evenly dispersed in the processing fluid, providing a continuous and uniform lubricating film for the workpiece surface during the processing, which can significantly improve the gloss and flatness of the workpiece surface, effectively reduce mold wear, improve the yield rate and extend the mold life.

[0030] (2) Good cleaning and cooling performance. The water-based aluminum alloy drawing fluid of the present application is a fully synthetic processing fluid that can be completely diluted with water. No additional cleaning agent is required for subsequent treatment after use, further reducing production costs. The cooling effect is better, the temperature rise of the processed material is reduced, and the surface quality of the workpiece can be more effectively guaranteed.

[0031] (3) Safety and environmental protection. The water-based aluminum alloy drawing liquid of the present application does not contain harmful substances such as sulfur, chlorine, and nitrite, is safe to store, is non-irritating to the skin and respiratory tract when used, is easily degradable, and is environmentally friendly.

[0032] (4) Good corrosion inhibition and rust prevention properties. The phosphate ester in the water-based aluminum alloy drawing fluid can effectively inhibit the rust of aluminum alloy under high temperature conditions. The additional addition of fungicide further ensures that the processing fluid will not deteriorate during long-term use and has a long service life.

[0033] (5) High stability. The original solution and diluted solution of water-based aluminum alloy drawing fluid are stable and will not stratify. The performance is stable and the processing effect is excellent. DETAILED DESCRIPTION

[0034] This application provides a water-based aluminum alloy drawing fluid and a preparation method thereof. To make the purpose, technical solution, and effects of this application more clear and explicit, this application is further described in detail below. It should be understood that the specific embodiments described herein are merely for the purpose of explaining this application and are not intended to limit this application.

[0035] The present application provides a water-based aluminum alloy drawing liquid, specifically, calculated by mass percentage, comprising the following components:

[0036]

[0037] This application takes into account the performance requirements of aluminum alloy processing. To address the problems of poor lubrication, poor cooling, and high oil consumption of aluminum alloy processing fluids in the existing technology, a water-based fully synthetic formula is used to optimize the cooling performance to improve the smoothness and surface finish of the processed parts. The characteristics of extreme pressure agents and oiliness agents are used to improve the overall lubrication properties. Rust inhibitors and other components are reasonably added to ensure the system stability of the processing fluid and improve its biological stability. The resulting water-based aluminum alloy drawing fluid has high lubrication performance and is easy to clean, which can better meet the processing requirements of aluminum alloys.

[0038] In the present application, the water-based aluminum alloy drawing fluid provided is diluted with water to obtain a working fluid. The amount of the water-based aluminum alloy drawing fluid used can account for 5-10% of the working fluid. The water can be tap water or deionized water, and tap water is generally used for dilution.

[0039] During use, it is necessary to ensure that the diluent (processing fluid) of the water-based aluminum alloy drawing fluid is within the optimal corrosion resistance range of aluminum (pH = 7-9), so an organic base is used for adjustment. In the present application, the rust inhibitor is compounded with a variety of small molecule organic acids, and the organic base can also react with the small molecule acid to neutralize it and dissolve it in water, thereby ensuring the stability of the full synthesis system. Furthermore, the organic base is one or more of monoethanolamine, triethanolamine, diglycolamine, dicyclohexylamine, dimethylamine and tetrahydroxymethylamine. Preferably, the organic base is triethanolamine. The preferred triethanolamine organic base can make the water-based aluminum alloy drawing fluid meet the above-mentioned pH range requirements within the dosage range provided in this application, and will not corrode the produced aluminum products and equipment workpieces, and will not cause damage when in contact with the skin.

[0040] The processing fluid is easy to corrode the workpiece after long-term use, so it is necessary to add a rust inhibitor. The rust prevention ability of a water-based rust inhibitor is closely related to factors such as its adsorption capacity on the metal surface, the thickness of the protective film that shields the corrosive medium, the density of the film, and its solubility in the solution. In order to make the rust inhibitor fully play its role at a lower concentration, there must be an appropriate match between the polar group and the non-polar group of the rust inhibitor molecule, that is, the polar group can be firmly adsorbed on the metal surface, and the non-polar group can effectively cover the entire metal surface. In order to achieve this goal, a variety of small molecule acids are selected to be added for compounding, making full use of their good rust resistance, hard water resistance and low foaming properties. Furthermore, the rust inhibitor is two or more of sebacic acid, tribasic acid, aminosulfonic acid, mixed dibasic acid and neodecanoic acid. The triprotic acid is CI-03, purchased from Tianjin Haoruisen Chemical Trading Co., Ltd. Preferably, the rust inhibitor is a combination of sebacic acid, CI-03, sulfamic acid, and neodecanoic acid; the mass ratio of sebacic acid, CI-03, sulfamic acid, and neodecanoic acid being 2:3:2.5:5. This preferred rust inhibitor combination can meet the aforementioned rust prevention requirements and also exhibits certain antibacterial properties.

[0041] The oiliness agent can enhance the lubricity of the lubricating oil and prevent wear and abrasion under boundary lubrication conditions. The polar groups therein are adsorbed on the metal friction surface and, by forming a molecular oriented adsorption film, block the direct contact between the metals, thereby reducing friction and wear. Furthermore, the oiliness agent is one or more of coconut oil acid, ricinoleic acid, oleic acid and palmitoleic acid. Preferably, the oiliness agent is coconut oil acid, and the mass percentage of coconut oil acid in the water-based aluminum alloy drawing fluid is preferably 5%. The coconut oil acid of this preferred ratio can well meet the above-mentioned lubrication requirements. At the same time, the addition of only 5% coconut oil acid is conducive to preventing the pour point of the processing fluid from being too low, affecting the use in low-temperature working environments, and is also more cost-effective.

[0042] Extreme pressure agents are heavy-duty additives that form an extreme pressure lubricating film on the surfaces of friction pairs under high-temperature, high-pressure boundary lubrication conditions. The extreme pressure and anti-wear properties of phosphorus-based extreme pressure agents correlate clearly with their hydrolysis properties: the easier they hydrolyze, the better their anti-wear and extreme pressure properties. Furthermore, the extreme pressure agent is one or more of a phosphate ester, an ammonium phosphate salt, a phosphoramide, and a polyether. The polyethers are polyether 17R2 and polyether 17R4, purchased from BASF. Preferably, the extreme pressure agent is a combination of phosphate ester, polyether 17R2, and polyether 17R4, with the mass ratio of phosphate ester, polyether 17R2, and polyether 17R4 being 6:10:9. The phosphate ester first adsorbs on the metal surface and then hydrolyzes into an acidic phosphate ester, which forms an organic metal phosphate protective film with the metal. Under extreme pressure friction conditions, it further decomposes to form an inorganic metal phosphorous acid film, exerting its extreme pressure and anti-wear properties. The high-temperature inverse solubility of the polyether further enhances the lubrication properties of the machining fluid. The preferred extreme pressure agent combination has excellent extreme pressure lubrication performance, is easily soluble in water-based lubricating fluid, and is more effective in preventing aluminum alloy corrosion in actual use.

[0043] Because some parts used in processing machines contain copper, aluminum, and iron, the oiliness agent may react and cause corrosion. To alleviate this corrosion, a corrosion inhibitor needs to be added to the processing fluid. Furthermore, the corrosion inhibitor is one or more of mercaptobenzothiazole, benzotriazole, tolutriazole, and tolutriazole sodium salt. Preferably, the corrosion inhibitor is benzotriazole. The preferred benzotriazole corrosion inhibitor has water-oil solubility and can be stably present in water-based processing fluids. The processing fluid can still function stably after long-term use, achieving the effect of no precipitation, no stratification, and no failure.

[0044] Since the processing fluid needs to be used repeatedly for a long time, a small amount of fungicide needs to be added to the phosphate nutrients, which are prone to breeding microorganisms and causing spoilage under high temperature and high humidity conditions for a long time. Furthermore, the fungicide is one or more of N,N'-methylenebismorpholine, iodopropynyl butylcarbamate, s-triazine, 1-2-benzisothiazolin-3-one and isothiazolinone. Preferably, the fungicide is a combination of N,N'-methylenebismorpholine and iodopropynyl butylcarbamate, and the mass ratio of N,N'-methylenebismorpholine and iodopropynyl butylcarbamate is 1.5:0.3. The morpholine derivative fungicide specially used for water-based metalworking fluid has a long-lasting bactericidal effect and a broad bactericidal spectrum; adding a small amount of iodopropynyl butylcarbamate can effectively kill fungi that grow during the working of the processing fluid. The preferred fungicide combination in this ratio can effectively extend the service life of the processing fluid and prevent deterioration.

[0045] During the processing, the processing fluid in the liquid tank is stirred for a long time, and a defoamer needs to be added to prevent the proliferation of bubbles in the liquid, so as to avoid the consequences of increased air content in the processing fluid, loss of lubricity and bacterial growth. Defoamers are generally made of silicone oil with low surface tension, which can prevent the formation and expansion of bubbles. Furthermore, the defoamer is one or more of polyvinyl alcohol defoamers, high carbon alcohol defoamers, silicone defoamers, and polyether defoamers. Preferably, the defoamer is silicone defoamer HP720, purchased from Mengqingxin Additive Trading (Shanghai) Co., Ltd., and the mass percentage of silicone defoamer HP720 in water-based aluminum alloy drawing liquid is 0.1%. The preferred silicone defoamer HP720 can be added in small amounts to obtain excellent defoaming performance.

[0046] This application takes into account the performance requirements of aluminum alloy processing. To address the problems of poor lubrication, poor cooling and high oil consumption of aluminum alloy processing fluids in the existing technology, a water-based fully synthetic formula is used to optimize the cooling performance to improve the smoothness and surface finish of the processed parts. Fatty acids are introduced simultaneously using a phosphate ester and polyether system, and the reverse solubility characteristics of polyether are fully utilized to improve the overall lubrication properties. Rust inhibitors and other components are reasonably added to ensure the system stability of the processing fluid and improve the biological stability. The resulting water-based aluminum alloy drawing fluid has high lubrication performance and is easy to clean, which can better meet the processing requirements of aluminum alloys.

[0047] The present application also provides a method for preparing the water-based aluminum alloy drawing liquid as described above, comprising the following steps:

[0048] (1) Deionized water is placed in a container, an organic base is added to the deionized water, and the mixture is stirred at 55-60° C. to obtain a clear and transparent mixed solution;

[0049] (2) Cool the mixed solution to below 35°C, add the extreme pressure agent to the mixed solution, and stir thoroughly until it becomes clear and transparent;

[0050] (3) adding the oiliness agent, corrosion inhibitor, bactericide and defoamer to the mixed solution in sequence, stirring thoroughly until clear and transparent, to obtain a water-based aluminum alloy drawing liquid;

[0051] When the rust preventive comprises a solid rust preventive, the solid rust preventive is added along with the organic base, and the stirring in step (1) is specifically stirred until the solid rust preventive is completely dissolved; when the rust preventive comprises a liquid rust preventive, the liquid rust preventive is added along with the extreme pressure agent.

[0052] According to this preparation method, the mixing reaction of the solid rust inhibitor and the organic base can be promoted by controlling the temperature. The extreme pressure agent is added after the temperature is lowered, which can effectively ensure the stability of the polyether system in the extreme pressure agent. After the components are added in sequence and fully stirred, it can be ensured that the components are fully mixed, and the processing fluid reaches a stable state. During long-term processing and use, it can exert good lubrication, rust prevention and other effects without stratification, precipitation, or failure.

[0053] The following is further described by specific examples.

[0054] 1. In each embodiment of this application, some raw materials are from the following sources:

[0055] Monoethanolamine: Junyan New Materials Technology (Shanghai) Co., Ltd.

[0056] Diglycolamine: Junyan New Materials Technology (Shanghai) Co., Ltd.

[0057] Triethanolamine: Dows;

[0058] Tribasic acid CI-03: Tianjin Haoruisen Chemical Trading Co., Ltd.

[0059] Sulfamic acid: Jiangsu Nuotai Aosino Biopharmaceutical Co., Ltd.

[0060] Sebacic acid: Shandong Cathay Biotechnology Materials Co., Ltd.

[0061] Neodecanoic acid: Mobil;

[0062] Coconut oleic acid: Jinan Hongming Industry and Trade Co., Ltd.

[0063] Ricinoleic acid: Simin Oil Chemical Co., Ltd.

[0064] Oleic acid: Tianjin Haoruisen Chemical Trading Co., Ltd.

[0065] Polyether 17R2: BASF;

[0066] Polyether 17R4: BASF;

[0067] Phosphate esters: Evonik;

[0068] Ammonium phosphate: Shanghai Hongze Chemical Co., Ltd.

[0069] Benzotriazole: Zhenjiang Bohan Chemical Technology Co., Ltd.

[0070] Silicone defoamer HP720: Mengqingxin Additive Trading (Shanghai) Co., Ltd.

[0071] 2. The preparation method of the water-based aluminum alloy drawing liquid in each embodiment of the present application comprises the following steps:

[0072] (1) Deionized water is placed in a container, and an organic base and solid rust inhibitor tribasic acid CI-03, sebacic acid, and aminosulfonic acid are mixed in the deionized water. The mixture is stirred at 55° C. until the solid rust inhibitor tribasic acid CI-03, sebacic acid, and aminosulfonic acid are completely dissolved to obtain a clear and transparent mixed solution.

[0073] (2) Cool the mixed solution to below 35°C, add the liquid rust inhibitor neodecanoic acid and extreme pressure agent in the rust inhibitor to the mixed solution, and stir thoroughly until it becomes clear and transparent;

[0074] (3) Adding an oiliness agent, a corrosion inhibitor, a bactericide, and a defoaming agent to the mixed solution in sequence, stirring the solution thoroughly until it becomes clear and transparent, thereby obtaining a water-based aluminum alloy drawing liquid.

[0075] 3. Performance testing

[0076] The test methods of the water-based aluminum alloy drawing fluid prepared in each embodiment of the present application include the base value, saponification value and stability tests using the original solution of the water-based aluminum alloy drawing fluid prepared in each embodiment;

[0077] Because the hardness of tap water varies in different regions, test data can vary. To ensure accurate data, performance tests were uniformly conducted using deionized water. The remaining performance tests were conducted by diluting the water-based aluminum alloy drawing fluids of each example with deionized water to obtain the working fluids of each example. The original solution of the water-based aluminum alloy drawing fluid accounted for 5% of the working fluid.

[0078] (1) Test methods for pH value, defoaming property, alkalinity, saponification value, and corrosivity: refer to GB / T6144-2010. For corrosivity, only 3003 series aluminum blocks are tested.

[0079] (2) The test method for extreme pressure performance is carried out in accordance with GB / T12583-1998, and the maximum no-seizure load P is tested. B and sintering load P D . Tester model: Xiamen Tianji MS-10A.

[0080] (3) Tapping torque test method: extrusion speed 800 r / min, depth 20 mm, maximum torque 400 Ncm, tool: TTT T-M4F-TINT 3.642 mm; 7075 aluminum: TTT-System 3.4365-M4F / 3.7 20 mm. Tester model: TAPTTTSystem-G8.

[0081] (4) Stability test method: The water-based aluminum alloy drawing liquid of each embodiment is used as the test object, sealed and left to stand at room temperature (25°C) for 12 hours, and the state changes are observed; the test object is sealed and left to stand at low temperature (-13±2°C) for 24 hours, and the changes are observed; the test object is sealed and left to stand at high temperature (70°C) for 5 hours, and the changes are observed (GB / T 6144).

[0082] (5) Anti-wear performance test method (RCP test): Friction frequency 2 Hz, friction length 50 mm, test time 20 s, friction temperature 60°C, contact load 94.03 N. The upper ball of the friction pair is a four-ball steel ball, and the lower test piece is a 3003 aluminum test piece with a thickness of 1 mm. Tester model: SFT-2 oscillating friction and wear tester developed by Lanzhou Huahui Instrument Technology Co., Ltd.

[0083] Examples 1-1 to 1-6

[0084] The components of the water-based aluminum alloy drawing liquid prepared in Examples 1-1 to 1-6 are shown in Table 1 below:

[0085] Table 1

[0086]

[0087]

[0088] Lubricating properties of the water-based aluminum alloy drawing fluids prepared in Examples 1-1 to 1-6 (maximum no-seizure load P in extreme pressure test) B , anti-wear test average friction coefficient RCP COF, tapping torque average torque), pH value and aluminum corrosion results are shown in Table 2 below:

[0089] Table 2

[0090]

[0091] The aluminum corrosion grade of each embodiment was tested with reference to GB / T6144-2010. The aluminum corrosion grade of Examples 1-3 was B (indicating slight darkening of the aluminum alloy), the aluminum corrosion grade of Example 1-4 was C (indicating moderate darkening of the aluminum alloy), and the aluminum corrosion grade of the remaining embodiments was A (indicating no rust on the aluminum alloy and as shiny as new). As can be seen from Table 2, the lubricating effect of Examples 1-1 to 1-6 was weakened with increasing pH, which means that the lubrication effect of the system was better under a neutral environment; at the same time, with the increase of monoethanolamine (MEA) dosage and pH, the aluminum corrosion became more serious, indicating that monoethanolamine seriously corrodes 3003 series aluminum, and the use of triethanolamine and diglycolamine can effectively slow down the corrosion of aluminum.

[0092] Examples 2-1 to 2-6 and Comparative Examples 1 to 3

[0093] In order to determine the optimal addition amount of the oiliness agent, the water-based aluminum alloy drawing liquids prepared in Examples 2-1 to 2-6 and Comparative Examples 1 to 3 have the following composition as shown in Table 3:

[0094] Table 3

[0095]

[0096]

[0097] The lubricating properties (average friction coefficient RCP COF of anti-wear test, average torque of tapping torque), pH value and aluminum corrosion results of the water-based aluminum alloy drawing fluids prepared in Examples 2-1 to 2-6 and Comparative Examples 1 to 3 are shown in Table 4 below:

[0098] Table 4

[0099]

[0100]

[0101] Table 4 shows that the addition of fatty acids significantly reduces the average torque, indicating a significant improvement in lubrication performance, with coconut oleic acid providing a more pronounced improvement. However, the saturated addition level of coconut oleic acid is 5%. Excessive use of coconut oleic acid can lower the pH of the system, increasing costs and compromising the biostability of the water-based aluminum alloy drawing fluid.

[0102] Examples 3-1 to 3-5 and Comparative Examples 4 to 6

[0103] In order to determine the optimal addition amount of the extreme pressure agent combination, the water-based aluminum alloy drawing liquid prepared in Examples 3-1 to 3-5 and Comparative Examples 4 to 6 has the following composition as shown in Table 5:

[0104] Table 5

[0105]

[0106]

[0107] The lubricating properties (average friction coefficient RCP COF of anti-wear test, average torque of tapping torque), pH and aluminum corrosion results of the water-based aluminum alloy drawing fluids prepared in Examples 3-1 to 3-5 and Comparative Examples 4 to 6 are shown in Table 6 below:

[0108] Table 6

[0109]

[0110]

[0111] As can be seen from Table 6, the lubrication performance of Examples 3-5 and Comparative Example 6 is also good, but all have unstable problems, and stratification occurs when placed at room temperature. The laboratory test data of such finished products may be better, but will be unstable during use in actual working conditions. It can be seen that ammonium phosphate is insoluble in the full synthesis system, and its addition can cause system instability and cannot meet the use of actual working conditions. With the increase of the amount of phosphate, lubrication performance is improved. Considering the phosphate of Example 3-2: polyether 17R2: polyether 17R4 = 6:10:9 compounding, lubrication performance reaches the best when the system is stable and not stratified, which can better meet the actual application conditions.

[0112] Examples 4-1 to 4-4

[0113] The components of the water-based aluminum alloy drawing liquid prepared in Examples 4-1 to 4-4 are shown in Table 7 below.

[0114] Table 7

[0115]

[0116]

[0117] The defoaming properties of the water-based aluminum alloy drawing liquid prepared in Examples 4-1 to 4-4 are shown in Table 8 below:

[0118] Table 8

[0119] sample Defoaming Residue (mL / 10min) Example 4-1 qualified 0 Example 4-2 Unqualified 10 Example 4-3 Unqualified 10 Example 4-4 Unqualified 10

[0120] As can be seen from Table 8, the addition of a small amount of silicone defoamer can effectively improve the foaming situation, while the addition of polyether defoamer has no obvious effect on improving the foam.

[0121] A commercially available imported aluminum processing fluid (Foshan) was used as a comparative example to compare the comprehensive performance of the water-based aluminum alloy drawing fluid provided in Example 4-1 of the present application. The performance data are shown in Table 9 below:

[0122] Table 9

[0123]

[0124]

[0125] During the tapping torque test, an infrared thermometer was used to detect the extrusion temperature rise (°C). From the performance data in Table 9, it can be seen that the lubricity and extreme pressure and wear resistance of the water-based aluminum alloy drawing fluid provided in the present application are better than those of the commercially available products in the comparative example, and a smaller temperature rise is generated during the tapping torque extrusion process, indicating that the water-based aluminum alloy drawing fluid provided in the present application can provide good cooling performance in actual processing, keep the workpiece processed at a temperature closer to room temperature, and ensure the brightness of the workpiece plate surface and the processing yield.

[0126] This application addresses the problems of insufficient lubrication performance, insufficient extreme pressure and anti-wear performance, insufficient cooling performance and insufficient cleaning performance of aluminum alloy processing fluids in the prior art. An oily agent is used to form a continuous high-strength lubricating film, and is compounded with an extreme pressure agent to improve the extreme pressure and lubrication performance under extremely difficult processing conditions. The provided water-based aluminum alloy drawing fluid does not contain base oil, so the oil consumption is significantly reduced compared to the widely used oil-based products on the market, and it has higher lubrication performance than the water-based products on the market. At the same time, the water-based processing fluid also fundamentally solves the problem of residual oil stains on the surface of most oil-based products on the market that are difficult to clean after processing.

[0127] This application aims to address the phenomenon of burrs on the surface of workpieces processed with oil-based aluminum processing fluid due to excessively high temperatures during the processing. The water-based aluminum alloy drawing fluid developed is a fully synthetic aluminum alloy processing fluid that can control temperature rise and improve the brightness of the aluminum plate surface and the processing yield.

[0128] It should be understood that the application of this application is not limited to the above examples. For ordinary technicians in this field, they can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of this application.

Claims

1. A water-based aluminum alloy drawing liquid, characterized in that: Calculated by mass percentage, it includes the following components: Organic base 10%-20%; Rust inhibitor 5%-15%; Oiliness agent 5%; Extreme pressure agent 10%-25%; Corrosion inhibitor 0.2%-2%; Fungicide 0.3%-1.8%; Defoaming agent 0.05%-0.2%; Deionized water balance; The rust inhibitor is a combination of sebacic acid, tribasic acid CI-03, aminosulfonic acid and neodecanoic acid; the mass ratio of sebacic acid, tribasic acid CI-03, aminosulfonic acid and neodecanoic acid is 2:3:2.5:5; The oiliness agent is coconut oleic acid, and the mass percentage of coconut oleic acid in the water-based aluminum alloy drawing liquid is 5%; The extreme pressure agent is a combination of phosphate ester, polyether 17R2 and polyether 17R4, and the mass ratio of the phosphate ester, polyether 17R2 and polyether 17R4 is 6:10:9; The organic base is triethanolamine; The corrosion inhibitor is benzotriazole; The fungicide is a combination of N,N'-methylenebismorpholine and iodopropynyl butylcarbamate, and the mass ratio of N,N'-methylenebismorpholine to iodopropynyl butylcarbamate is 1.5:0.3; The defoaming agent is an organosilicon defoaming agent.

2. The water-based aluminum alloy drawing liquid according to claim 1, characterized in that The defoaming agent is an organosilicon defoaming agent HP720, and the mass percentage of the organosilicon defoaming agent HP720 in the water-based aluminum alloy drawing liquid is 0.1%.

3. A method for preparing a water-based aluminum alloy drawing liquid according to any one of claims 1 to 2, characterized in that: The following steps are involved: (1) placing the deionized water in a container, adding the organic base, the sebacic acid, the tribasic acid CI-03, and the aminosulfonic acid into the deionized water, and mixing them, and stirring them thoroughly at 55-60° C. to obtain a clear and transparent mixed solution; (2) Cooling the mixed solution to below 35° C., adding the extreme pressure agent and the neodecanoic acid to the mixed solution, and stirring thoroughly until the solution becomes clear and transparent; (3) Adding the oiliness agent, the corrosion inhibitor, the bactericide and the defoaming agent to the mixed solution in sequence, stirring the solution until it becomes clear and transparent, thereby obtaining the water-based aluminum alloy drawing liquid.

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