Special cutting fluid with high lubrication and long-acting corrosion resistance for aviation aluminum and preparation method of special cutting fluid

Abstract

The invention discloses a high-lubricity long-acting corrosion-resistant cutting fluid special for aviation aluminum and a preparation method of the high-lubricity long-acting corrosion-resistant cutting fluid special for aviation aluminum, and the high-lubricity long-acting corrosion-resistant cutting fluid special for aviation aluminum is prepared from the following components in percentage by mass: 20-35% of mineral oil, 5-10% of an oiliness agent, 10-20% of an emulsifier, 5-10% of an antirust agent, 1-4% of an anticorrosive agent and 10-15% of an alkalinity regulator. 0.1%-0.3% of a defoaming agent, 1%-5% of a bactericide and 3%-6% of an anti-wear reagent at Adding the antirust agent, the alkalinity regulator and the deionized water into the reaction kettle, heating the reaction kettle to 40-50 DEG C, stirring, and stopping stirring after the antirust agent, the alkalinity regulator and the deionized water are completely dissolved; then adding an emulsifier, and controlling the temperature of the reaction kettle to be 40-50 DEG C; and after the temperature of the mixture in the reaction kettle is reduced to room temperature, sequentially adding the rest components, and stirring for 1-3 hours to obtain the high-lubrication long-acting anticorrosive cutting fluid special for aviation aluminum. The problems that the special cutting fluid for aviation aluminum is poor in lubricating performance and short in anti-corrosion period are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of lubricating oils, and in particular relates to a high-lubricity, long-lasting anti-corrosion special cutting fluid for aviation aluminum. The present invention also relates to a method for preparing the aviation aluminum cutting fluid and aviation hydraulic oil. Background Art

[0002] Aviation aluminum alloys have the characteristics of low density and high strength, but their high strength and susceptibility to chemical corrosion bring great difficulties to the processing process. During the processing of aviation aluminum alloy workpieces, when the lubrication ability of the cutting fluid is insufficient, the low yield strength aluminum particles will adhere to the surface of the cutting tool, thereby affecting the surface roughness of the workpiece or forming a "bonded" built-up edge on the tool, forming a cutting mark. At the same time, aviation aluminum alloys are more chemically active than ordinary alloys. When the anti-corrosion performance of the cutting fluid is reduced, aviation aluminum alloy workpieces are prone to corrosion and blackening. The Chinese invention patent discloses a low pH aviation aluminum alloy cutting fluid and its preparation and application with application publication number CN201710325539.8. The patent solves the problem that aviation aluminum is easy to corrode and discolor during cutting, but has not yet solved the problem of poor lubrication of aviation aluminum alloys during cutting.

[0003] In summary, there are no literature reports on high-lubricity, long-lasting anti-corrosion special cutting fluids for aviation aluminum and their preparation methods. It is urgent to develop high-lubricity, long-lasting anti-corrosion special cutting fluids for aviation aluminum and their preparation methods. Summary of the invention

[0004] The purpose of the present invention is to provide a high-lubricity, long-lasting anti-corrosion special cutting fluid for aviation aluminum, which solves the problems of poor lubrication performance and short anti-corrosion period of existing cutting fluids.

[0005] Another object of the present invention is to provide a method for preparing the above-mentioned high-lubricity, long-lasting anti-corrosion aviation aluminum special cutting fluid.

[0006] The technical solution adopted by the present invention is that the special cutting fluid for aviation aluminum with high lubricity and long-term corrosion protection is composed of the following components in terms of mass percentage: 20% to 35% of mineral oil, 5% to 10% of oiliness agent, 10% to 20% of emulsifier, 5% to 10% of rust inhibitor, 1% to 4% of corrosion inhibitor, 10% to 15% of alkalinity regulator, 0.1% to 0.3% of defoaming agent, 1% to 5% of bactericide, 3% to 6% of extreme pressure anti-wear agent, and the balance of deionized water.

[0007] The present invention is also characterized in that the emulsifier is one of sorbitan monooleate polyoxyethylene ether and fatty alcohol polyoxyethylene ether or a mixture of the two in any proportion;

[0008] The rust inhibitor is a mixture of boric acid, benzotriazole and dibasic acid, wherein the mass ratio of the two components of boric acid and benzotriazole is 20:10-20, and the mass ratio of the two components of benzotriazole and dibasic acid is 10-20:1;

[0009] The alkalinity regulator is a mixture of one or more of monoethanolamine, diethanolamine, triethanolamine and isopropanolamine in any proportion;

[0010] The extreme pressure anti-wear agent is one of chlorinated paraffin and di-n-butyl phosphite or a mixture of the two in any proportion;

[0011] The fungicide is a mixture of two components, hydroxyethyl hexatriazine and dicyclohexylamine, and the mass ratio of the two components is 1:1-5.

[0012] Another technical solution adopted by the present invention is:

[0013] The preparation method of high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid is as follows:

[0014] S1: Weigh the following components: mineral oil 20%-35%, oiliness agent 5%-10%, emulsifier 10%-20%, rust inhibitor 5%-10%, corrosion inhibitor 1%-4%, alkalinity regulator 10%-15%, defoamer 0.1%-0.3%, bactericide 1%-5%, extreme pressure anti-wear agent 3%-6%, and the balance deionized water;

[0015] S2: adding a rust inhibitor, an alkalinity regulator and deionized water into a reaction kettle, heating and stirring to obtain a reactant;

[0016] S3: adding an emulsifier to the reactants and stirring at a constant temperature of 40°C to 50°C to obtain a mixed solution A;

[0017] S4: Cool the mixed solution A to room temperature, then add a bactericide, an extreme pressure anti-wear agent, a corrosion inhibitor, an oiliness agent, and a defoaming agent in sequence, stir evenly, and obtain a mixed solution B;

[0018] S5: Add mineral oil to mixed liquid B to obtain a highly lubricating, long-lasting anti-corrosion special cutting fluid for aviation aluminum.

[0019] The present invention is also characterized in that:

[0020] Heat S2 to 40-50°C and stir at a heating rate of 2-4°C / min, and stop stirring after the rust inhibitor and alkalinity regulator are completely dissolved;

[0021] The stirring time in S5 is 1 to 3 hours;

[0022] The stirring rates in S2, S3 and S5 are all 100-180 r / min.

[0023] The beneficial effects of the present invention are as follows: the highly lubricating, long-lasting anti-corrosion aviation aluminum special cutting fluid prepared by the present invention using a specific formula has good lubricity, corrosion resistance and material compatibility, and can meet the lubrication, cooling, rust prevention and corrosion prevention requirements during aviation aluminum cutting. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with specific implementation modes.

[0025] The high-lubricity, long-lasting anti-corrosion special cutting fluid for aviation aluminum of the present invention is composed of the following raw material components according to mass percentage:

[0026] Mineral oil is 20% to 35%, oiliness agent is 5% to 10%, emulsifier is 10% to 20%, rust inhibitor is 5% to 10%, corrosion inhibitor is 1% to 4%, alkalinity regulator is 10% to 15%, defoamer is 0.1% to 0.3%, bactericide is 1% to 5%, extreme pressure anti-wear agent is 3% to 6%, and the balance is deionized water;

[0027] Furthermore, the mineral oil is transformer oil, and the oiliness agent is synthetic grease;

[0028] The emulsifier is any one or a mixture of sorbitan monooleate polyoxyethylene ether and fatty alcohol polyoxyethylene ether;

[0029] The rust inhibitor is a mixture of three components: boric acid, benzotriazole and dibasic acid, wherein the mass ratio of the two components of boric acid and benzotriazole is 20:10-20, and the mass ratio of the two components of benzotriazole and dibasic acid is 10-20:1;

[0030] The corrosion inhibitor is Hostacor ITD corrosion inhibitor. Hostacor ITD is a multi-purpose high-performance additive that can be used in the production of metalworking fluids and lubricants. It is not only an effective extreme pressure anti-wear additive, but also provides excellent corrosion protection for steel and aluminum alloys, while also reducing copper and cobalt leaching. Adding Hostacor ITD aluminum corrosion inhibitor to cutting fluid can better help aviation aluminum alloys to achieve long-term corrosion protection;

[0031] The alkalinity regulator is any one or a mixture of monoethanolamine, diethanolamine, triethanolamine, and isopropanolamine, wherein the above components can be mixed in any proportion;

[0032] The defoamer is a modified silicone-based defoamer.

[0033] The bactericide consists of two components, namely, hydroxyethyl hexahydro-s-triazine and dicyclohexylamine, and the mass ratio of hydroxyethyl hexahydro-s-triazine to dicyclohexylamine is 1:1-5.

[0034] Extreme pressure anti-wear additives refer to additives that can form a chemical reaction film with the metal surface under local high temperature and high pressure boundary lubrication conditions to prevent sintering, sticking and scratching. Their function is that the decomposition products can react with the metal under high friction temperature to form compounds with lower shear stress and melting point than pure metals, thereby preventing the contact surface from biting and welding, and effectively protecting the metal surface. Chlorinated paraffin can react chemically with the metal surface at 200℃~300℃. The friction coefficient of chloride is lower than that of sulfide. Therefore, chlorine-containing extreme pressure additives have excellent lubrication properties. Metal cutting fluids containing chlorine extreme pressure additives can withstand high temperatures of about 600℃, and are particularly suitable for cutting alloy steel, high-strength steel, molybdenum and other difficult-to-cut materials.

[0035] The extreme pressure anti-wear agent is any one of chlorinated paraffin and di-n-butyl phosphite or a mixture of several of them.

[0036] The preparation method of the high-lubricity, long-term anti-corrosion special aviation aluminum cutting fluid of the present invention is specifically implemented according to the following steps:

[0037] Step 1. Weigh the following components by mass percentage: mineral oil 20% to 35%, oiliness agent 5% to 10%, emulsifier 10% to 20%, rust inhibitor 5% to 10%, corrosion inhibitor 1% to 4%, alkalinity regulator 10% to 15%, defoamer 0.1% to 0.3%, bactericide 1% to 5%, extreme pressure anti-wear agent 3% to 6%, and the balance is deionized water;

[0038] Step 2. Add the rust inhibitor, alkalinity regulator and deionized water into a reactor, heat the reactor to 40°C to 50°C at a heating rate of 2 to 4°C / min, stir at a stirring rate of 100 to 180 r / min, and stop stirring after the rust inhibitor and alkalinity regulator are completely dissolved to obtain a reactant;

[0039] Step 3. Add the emulsifier to the reactants, control the temperature of the reactor to 40°C to 50°C, stir the reactants at a stirring rate of 100 to 180 r / min to obtain a mixed solution A;

[0040] Step 4. Cool the mixed solution A in the reactor to room temperature, add a bactericide, an extreme pressure anti-wear agent, a corrosion inhibitor, an oiliness agent, and a defoaming agent in sequence, and stir evenly to obtain a mixed solution B;

[0041] Step 5. Add mineral oil to mixed liquid B and continue stirring for 1 to 3 hours at a stirring rate of 100 to 180 r / min. After sampling and analysis are qualified, a high-lubricity, long-lasting anti-corrosion aviation aluminum special cutting fluid is obtained.

[0042] Example 1

[0043] Taking the production of 100 kg of the high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid of the present invention as an example, the raw materials and their mass ratios are as follows:

[0044] Table 1 Example 1 Raw material ratio for preparing special cutting fluid for aviation aluminum

[0045]

[0046] The preparation method of the high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid is specifically implemented according to the following steps:

[0047] Step 1. Weigh each raw material according to the data in the above table;

[0048] Step 2. Add a rust inhibitor, an alkalinity regulator, and deionized water into a reactor, heat the reactor to 40° C. at a heating rate of 2° C. / min, stir at a stirring rate of 100 r / min, and stop stirring after the rust inhibitor and the alkalinity regulator are completely dissolved to obtain a reactant;

[0049] Step 3. Add the emulsifier to the reactants, control the temperature of the reactor to 40°C, stir the mixture evenly at a stirring rate of 100 r / min, and obtain a mixed solution A;

[0050] Step 4. Cool the mixed solution A in the reactor to room temperature, add a bactericide, an extreme pressure anti-wear agent, a corrosion inhibitor, an oiliness agent, and a defoaming agent in sequence, and stir evenly to obtain a mixed solution B;

[0051] Step 5. Add mineral oil to mixed liquid B and continue stirring for 1 hour at a stirring rate of 180r / min. After sampling and analysis, a high-lubricity, long-lasting anti-corrosion aviation aluminum special cutting fluid is obtained.

[0052] Example 2

[0053] Taking the production of 100 kg of the high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid of the present invention as an example, the raw materials and their mass ratios are as follows:

[0054] Table 2 Example 2 Raw material ratios for preparing special cutting fluid for aviation aluminum

[0055]

[0056]

[0057] The preparation method of high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid, the specific steps are as follows:

[0058] Step 1. Weigh each raw material according to the data in the above table;

[0059] Step 2. Add a rust inhibitor, an alkalinity regulator, and deionized water into a reactor, heat the reactor to 50° C. at a heating rate of 4° C. / min, stir at a stirring rate of 150 r / min, and stop stirring after the rust inhibitor and the alkalinity regulator are completely dissolved to obtain a reactant;

[0060] Step 3. Add the emulsifier to the reactants, control the temperature of the reactor to 50°C, stir the mixture evenly at a stirring rate of 150 r / min, and obtain a mixed solution A;

[0061] Step 4. Cool the mixed solution A in the reactor to room temperature, add a bactericide, an extreme pressure anti-wear agent, a corrosion inhibitor, an oiliness agent, and a defoaming agent in sequence, and stir evenly to obtain a mixed solution B;

[0062] Step 5. Add mineral oil to mixed liquid B and continue stirring for 3 hours at a stirring rate of 100r / min. After sampling and analysis are qualified, a high-lubricity, long-lasting anti-corrosion aviation aluminum special cutting fluid is obtained.

[0063] Example 3

[0064] Taking the production of 100 kg of the high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid of the present invention as an example, the raw materials and their mass ratios are as follows:

[0065] Table 3 Example 3 Raw material ratio for preparing special cutting fluid for aviation aluminum

[0066]

[0067] The preparation method of high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid, the specific steps are as follows:

[0068] Step 1. Weigh each raw material according to the data in the above table;

[0069] Step 2. Add a rust inhibitor, an alkalinity regulator, and deionized water into a reactor, heat the reactor to 45° C. at a heating rate of 3° C. / min, stir at a stirring rate of 180 r / min, and stop stirring after the rust inhibitor and the alkalinity regulator are completely dissolved to obtain a reactant;

[0070] Step 3. Add the emulsifier to the reactants, control the temperature of the reactor to 45°C, stir the mixture evenly at a stirring rate of 180 r / min, and obtain a mixed solution A;

[0071] Step 4. Cool the mixed solution A in the reactor to room temperature, add a bactericide, an extreme pressure anti-wear agent, a corrosion inhibitor, an oiliness agent, and a defoaming agent in sequence, and stir evenly to obtain a mixed solution B;

[0072] Step 5. Add mineral oil to mixed liquid B and continue stirring for 2 hours at a stirring rate of 140r / min. After sampling and analysis, a high-lubricity, long-lasting anti-corrosion aviation aluminum special cutting fluid is obtained.

[0073] The cutting fluids obtained in Examples 1 to 3 were tested for performance, and the test results are as follows:

[0074] Table 4 Cutting fluid test results of Examples 1 to 3

[0075]

[0076]

[0077] In summary, it can be seen that the aviation aluminum cutting fluid prepared by the present invention has good centrifugal stability, lubricity, corrosion resistance and material compatibility, and can meet the needs of lubrication, cooling, rust prevention and corrosion prevention during aviation aluminum cutting.

Claims

1. Highly lubricating and long-lasting anti-corrosion special cutting fluid for aviation aluminum, characterized by: The invention is composed of the following components in percentage by mass: 20% to 35% of mineral oil, 5% to 10% of oiliness agent, 10% to 20% of emulsifier, 5% to 10% of rust inhibitor, 1% to 4% of corrosion inhibitor, 10% to 15% of alkalinity regulator, 0.1% to 0.3% of defoaming agent, 1% to 5% of fungicide, 3% to 6% of extreme pressure anti-wear agent and the balance of deionized water.

2. The high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid according to claim 1 is characterized in that: The emulsifier is one of sorbitan monooleate polyoxyethylene ether and fatty alcohol polyoxyethylene ether, or a mixture of the two in any proportion.

3. The high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid according to claim 1 is characterized in that: The rust inhibitor is a mixture of boric acid, benzotriazole and dibasic acid, the mass ratio of the boric acid and benzotriazole is 20:10-20, and the mass ratio of the benzotriazole and dibasic acid is 10-20:

1.

4. The high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid according to claim 1 is characterized in that: The alkalinity regulator is a mixture of one or more of monoethanolamine, diethanolamine, triethanolamine and isopropanolamine in any proportion.

5. The high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid according to claim 1 is characterized in that: The extreme pressure anti-wear agent is one of chlorinated paraffin and di-n-butyl phosphite or a mixture of the two in any proportion.

6. The high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid according to claim 1 is characterized in that: The fungicide is a mixture of two components, hydroxyethyl hexatriazine and dicyclohexylamine, and the mass ratio of the two components is 1:1-5.

7. A method for preparing a high-lubricity, long-lasting anti-corrosion aviation aluminum cutting fluid, characterized in that the steps are: as follows: S1: Weigh the following components: mineral oil 20%-35%, oiliness agent 5%-10%, emulsifier 10%-20%, rust inhibitor 5%-10%, corrosion inhibitor 1%-4%, alkalinity regulator 10%-15%, defoamer 0.1%-0.3%, bactericide 1%-5%, extreme pressure anti-wear agent 3%-6%, and the balance deionized water; S2: adding the rust inhibitor, alkalinity regulator and deionized water into a reaction kettle, heating and stirring to obtain a reactant; S3: adding an emulsifier to the reactants, stirring at a constant temperature of 40°C to 50°C to obtain a mixed solution A; S4: Cooling the mixed solution A to room temperature, then sequentially adding a bactericide, an extreme pressure anti-wear agent, a corrosion inhibitor, an oiliness agent, and a defoaming agent, and stirring evenly to obtain a mixed solution B; S5: Add mineral oil to mixed liquid B to obtain a highly lubricating, long-lasting anti-corrosion special cutting fluid for aviation aluminum.

8. The method for preparing a high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid according to claim 7, characterized in that: The temperature in S2 is raised to 40° C. to 50° C. and stirred at a heating rate of 2 to 4° C. / min. Stirring is stopped after the rust inhibitor and the alkalinity regulator are completely dissolved.

9. The method for preparing a high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid according to claim 7, characterized in that: The stirring time in S5 is 1 to 3 hours.

10. The method for preparing a high lubricity and long-term anti-corrosion aviation aluminum special cutting fluid according to claim 7, characterized in that: The stirring rates in S2, S3 and S5 are all 100-180 r / min.

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