Honing oil as well as preparation method and application thereof

Abstract

The invention relates to the technical field of honing oil, and discloses honing oil and a preparation method and application thereof, the honing oil comprises the following components: 70%-80% of base oil, 18%-28% of synthetic ester, 0.1%-1.0% of an antioxidant, 1.0%-2.0% of an antirust agent, 0.1%-0.2% of a copper corrosion inhibitor, and 0.05%-0.1% of a defoaming agent. The synthetic ester is uniformly dissolved in the base oil, and a uniform, continuous and compact oil film can be formed on the metal surface when the lubricating oil is used, so that the lubricating oil has better lubricating property; the specific base oil is selected, so that the heat conductivity is better, and the problem of local metal processing overheating can be reduced; the low-viscosity base oil and different types of synthetic esters are compounded, so that the viscosity of the oil liquid can be effectively controlled, and the wettability can be effectively exerted; and meanwhile, by adding the antioxidant, the antirust agent and the copper corrosion inhibitor, the corrosion problem is fundamentally avoided, and the prepared honing oil is particularly suitable for processing application of black metal.

Description

Technical Field

[0001] The invention relates to the technical field of honing oil, and in particular to a honing oil and a preparation method and application thereof. Background Art

[0002] Due to the high precision, small theoretical error, and extremely high surface quality requirements of honing, special processing oil is required in the honing process. Conventional metal processing oil cannot be used for metal honing due to many limitations such as insufficient lubrication, poor wettability, and slow thermal conductivity. In order to solve the above problems, the processing oil used in metal honing needs to have the following characteristics: (1) Good lubricity to ensure good lubricity during metal processing; (2) Good wettability to ensure the long-term sharpness of the honing bar and extend its service life; (3) Excellent cooling performance to promptly conduct or absorb the heat generated during the processing; (4) Outstanding anti-rust performance to form a dense protective layer on the surface of ferrous metal processing to avoid rust and ensure its long-term effectiveness.

[0003] Commonly used metal processing oils mainly include stamping oil, cutting oil and grinding oil, etc., but their processing characteristics and performance cannot meet the processing needs of honing.

[0004] At present, there is little public information on honing oil, such as publication numbers CN116814323A, CN109810766A, etc. The described solutions can be applied to metal grinding processes, but their disadvantages are insufficient lubricity and poor cooling performance, making them difficult to meet the performance requirements of honing processes.

[0005] The prior art describes a metalworking honing oil, in which a large proportion of high-flash point base oil, synthetic ester, antioxidant, and rust inhibitor and defoaming agent are added to achieve long-lasting rust prevention and foaming resistance, thereby achieving excellent honing processing results. The metalworking honing oil described in the public information has the following problems: (1) Insufficient lubricity, thin oil film thickness, and poor effective lubrication performance. (2) Poor processing surface quality. Due to the poor wettability of the oil, the processing surface roughness is difficult to meet the requirements. (3) Poor cooling performance. Since the heat of the honing process is relatively concentrated, a large amount of heat is generated locally on the honing bar and the processing surface, which greatly shortens the service life of the honing bar. (4) Insufficient rust prevention performance. Since chemical reactions occur during the use of the processing oil, the free hydrogen ions or chloride ions accelerate the corrosion of the machine or workpiece, which puts higher requirements on effective protection. Therefore, it is necessary to develop a honing oil with good lubricity, good wettability, excellent cooling property and outstanding anti-rust performance, so that the metal honing process can have excellent lubrication, good cooling property and high processing precision. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a honing oil and a preparation method and application thereof, taking into account the process performance requirements of metal surface processing, and aiming at the current situation that the prior art has insufficient lubricity, wettability, cooling performance and service life, it is intended to adopt low-viscosity base oil and synthetic esters, antioxidants and other substances, so that the honing oil can complete efficient processing when used, has strong anti-corrosion performance, and is safe and reliable.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A honing oil is composed of the following components calculated by mass percentage: base oil: 70%-80%, synthetic ester: 15%-28%, antioxidant: 0.1%-1.0%, rust inhibitor: 1.0%-2.0%, copper corrosion inhibitor: 0.1%-0.2%, and defoamer: 0.05%-0.1%.

[0009] The honing oil, wherein the viscosity of the base oil at 40°C is 4.0 mm 2 / s~4.4mm 2 / s.

[0010] The honing oil, wherein the synthetic ester is a composite product of isooctyl stearate and fatty acid methyl ester.

[0011] The honing oil, wherein the antioxidant is a composite product of a phenolic antioxidant and an amine antioxidant.

[0012] The honing oil, wherein the phenolic antioxidant is tert-butyl hydroxyphenol, and the amine antioxidant is N,N-di-sec-butyl-p-phenylenediamine; the addition ratio of the phenolic antioxidant to the amine antioxidant is 1:1.

[0013] The honing oil, wherein the rust inhibitor is super high base synthetic calcium sulfonate.

[0014] The honing oil, wherein the copper corrosion inhibitor is one of benzotriazole, tolutriazole, and sodium mercaptobenzothiazole.

[0015] The honing oil, wherein the defoaming agent is an organosilicon defoaming agent.

[0016] A method for preparing honing oil comprises the following steps:

[0017] S1. Mix the base oil and the synthetic ester in proportion, and stir the mixed solution at a temperature of 50 to 55°C until the mixed solution is homogeneous and transparent;

[0018] S2. Add an antioxidant to the mixed solution in step S1 and stir until the mixed solution is homogeneous and transparent;

[0019] S3. Add a rust inhibitor, a copper corrosion inhibitor and a defoamer to the mixed solution in step S2 in sequence, and stir evenly to obtain the honing oil.

[0020] The honing oil is applied to ferrous metal processing.

[0021] Beneficial effects:

[0022] The present invention provides a honing oil and a preparation method and application thereof, which have the following advantages:

[0023] 1. Good lubricity: The different synthetic esters in the present invention are compounded and uniformly dissolved in the base oil, and can form a uniform, continuous and dense oil film on the metal surface when used, thereby having good lubrication performance and forming a good lubrication effect in the production process.

[0024] 2. Good wettability: The present invention adopts a specific low-viscosity base oil and different types of synthetic esters to effectively control the viscosity of the oil and ensure that the wettability is effectively exerted.

[0025] 3. Good cooling performance: Since the selected base oil has good thermal conductivity, it can reduce the problem of overheating in local metal processing and avoid shortening the service life of the tool due to excessive fatigue.

[0026] 4. Outstanding anti-corrosion effect; due to the interaction between the selected antioxidants and the non-use of synthetic esters containing chlorine elements, the chemical reaction between the free chloride ions and the metal is avoided, which fundamentally eliminates the occurrence of corrosion problems, making the prepared honing oil particularly suitable for ferrous metal processing applications. DETAILED DESCRIPTION

[0027] The present invention provides a honing oil and a preparation method and application thereof. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the protection scope of the present invention.

[0028] The invention provides a honing oil, which is composed of the following components calculated by mass percentage: base oil: 70%-80%, synthetic ester: 15%-28%, antioxidant: 0.1%-1.0%, rust inhibitor: 1.0%-2.0%, copper corrosion inhibitor: 0.1%-0.2%, and defoamer: 0.05%-0.1%.

[0029] Base oil: used to provide a medium for the uniform dissolution of different types of additives. At the same time, due to its repeatable molecular structure, some synthetic base oils have antioxidant properties, reduce friction loss, and are good cooling media. The carbon chain structure of synthetic base oils is uniform and repeatable, and the active free radicals formed are more likely to react with functional groups such as ester groups, hydroxyl groups, and amino groups, thereby achieving rust prevention, antioxidant, and lubrication effects.

[0030] Preferably, the low viscosity base oil selected in the present invention is based on a viscosity of 4.0 mm at 40°C. 2 / s~4.4mm 2 / s, the viscosity of the base oil has a direct impact on the lubrication performance. The base oil with appropriate viscosity can form a thicker oil film between the oilstone and the workpiece surface. The base oil in the above viscosity range, although the viscosity is relatively low, can still form a sufficiently thin and effective lubricating film on the surface of the oilstone and the workpiece under the honing pressure. Compared with high-viscosity oil, this thin oil film can better meet the high-precision requirements of honing. In addition, the appropriate base oil viscosity can ensure that the heat can be dissipated in time during the honing process to prevent the workpiece and the oilstone from being damaged due to overheating. It can also effectively carry the chips away from the honing area. If the chips are not taken away in time, they will re-enter the honing area, causing secondary scratches on the surface of the workpiece and affecting the processing quality. Low-viscosity base oil may have certain advantages in this regard, because it has good fluidity and can more easily entrain the chips in the oil flow, so that it leaves the honing area with the flow of the oil. However, if the base oil viscosity is too low, it may not provide enough power to completely carry away the chips, especially for some heavier or larger chips. On the contrary, a base oil with too high a viscosity may make it difficult for the grinding debris to be suspended in the oil and easily deposited in the honing area. Furthermore, the viscosity of the base oil affects the dissolution and dispersion of the additives. The viscosity within the above range can ensure that the additives are evenly dispersed in the base oil so that they can fully play their role. For example, additives such as antioxidants and rust inhibitors need to be evenly distributed in the base oil so that they can fully play their role during the honing process. If the base oil viscosity is too high, the additives may be difficult to fully dissolve and disperse, resulting in insufficient concentration of additives in local areas, and the expected protection effect cannot be achieved; while the viscosity is too low, the additives may not be able to play a sufficient role in the key area because they are too dispersed. Therefore, the viscosity within the above range is preferred, which can ensure that the honing oil has sufficient oil film thickness, while taking into account good wettability, and can fully play the overall effective lubrication. Other base oils do not meet the viscosity requirements, or multiple base oils can be used to obtain the viscosity range, but the system stability cannot meet the requirements of the base oil, so the optimal solution 5# base oil is selected. More specifically, the 5# base oil is selected from Guangdong Zhonghai Nanlian Energy Co., Ltd.

[0031] Synthetic ester: It is synthesized by esterification reaction of carboxylic acid and alcohol. Synthetic ester has very good properties, such as good viscosity-temperature characteristics: ester oil has good viscosity-temperature characteristics and a high viscosity index; good low-temperature performance: diesters with branched alcohols usually have a lower pour point; good high-temperature performance: the same type of ester, with the increase of relative molecular weight, the flash point increases and the volatility decreases; good lubricity: from the molecular structure point of view, synthetic ester molecules contain ester bonds (-COO-), which are key functional groups. Ester bonds are polar, and ester-based ester molecules are easily adsorbed on the friction surface to form boundary oil films. Under harsh conditions such as high temperature and high pressure, these adsorption films can effectively reduce the friction coefficient and reduce wear. Therefore, the lubricity of ester oil is generally better than that of mineral oil with the same viscosity, and it has good anti-wear and anti-scratch (backlog) and friction characteristics.

[0032] Preferably, the synthetic ester in the present invention is the composite product of isooctyl stearate and fatty acid methyl ester, and isooctyl stearate is because of its good anti-friction wear resistance, wettability (permeability) and high temperature oxidation resistance, and its viscosity is close to 10# white oil. Fatty acid methyl ester also has certain lubrication, also has the characteristics of low viscosity, low pour point and high flash point, and its saponification value content is higher, after the two are composited, lubricity can produce synergistic effect, can better reduce the friction between honing head and workpiece in honing process, further improve machining accuracy and surface quality, ensure under the high temperature conditions produced in honing process, still can keep stable lubrication effect, prevent lubricity from decreasing due to temperature increase, can provide continuous long-term lubrication effect for oil. In addition, the fluidity of fatty acid methyl ester is relatively good, can quickly take away the heat generated in honing process, play a good cooling effect. Isooctyl stearate also has a certain heat dissipation capacity. When compounded with fatty acid methyl ester, it can further improve the cooling performance of the honing oil. This is of great significance for avoiding excessive temperatures of the workpiece and the honing head during the honing process, reducing thermal deformation, and preventing a decrease in machining accuracy due to overheating.

[0033] Antioxidants: Antioxidants refer to antioxidant agents used in the production process of metal products. They mainly form a protective film on the metal surface to isolate it from the air, water, etc. in the environment, so as to weaken the metal activity and slow down the oxidation and corrosion of the metal. Specifically, antioxidants are mainly divided into two categories: amine antioxidants and phenolic antioxidants. The mechanism of action of amine antioxidants is mainly to prevent or inhibit chain initiation and chain growth reactions by capturing peroxyl free radicals, thereby terminating the free radical chain reaction and achieving the purpose of preventing oxidation. Phenolic antioxidants prevent or inhibit chain initiation and chain growth reactions by capturing peroxyl free radicals, thereby terminating the free radical chain reaction and achieving the purpose of preventing oxidation. In addition, the substituted groups (such as tert-butyl) in phenolic antioxidants can form steric hindrances, hindering the attack of oxygen and other free radicals, thereby improving the antioxidant efficiency. In lubricating oils, when amine and phenolic antioxidants are added at the same time, they can capture free radicals from multiple angles at the same time, making oxidation reactions more difficult. In addition, phenolic antioxidants usually show good antioxidant properties in low temperature environments, while amine antioxidants have good stability and antioxidant properties in high temperature environments. When the two are compounded in a 1:1 ratio, the oil can maintain good antioxidant properties in a wider temperature range. Furthermore, in different oxidizing media environments, the compounding of amine and phenolic antioxidants also has advantages. In an oxidizing environment containing a small amount of water, phenolic antioxidants may be less sensitive to water and can continue to play an antioxidant role, while in some environments where metal ions catalyze oxidation, amine antioxidants may weaken the catalytic effect of metal ions on oxidation reactions by forming complexes with metal ions. The compounded antioxidants can better cope with complex and changeable oxidizing environments and improve the stability of oil products.

[0034] Preferably, the phenolic antioxidant of the present invention is tert-butyl hydroxyphenol (BHT); the amine antioxidant is N, N-di-sec-butyl-p-phenylenediamine (44PD). When BHT and 44PD are used in combination, a significant synergistic effect will be produced. In the early stage of the oxidation reaction, BHT can quickly capture free radicals in the system because it has a high reactivity at room temperature. As the oxidation process proceeds, especially when the temperature rises or the oxidation reaction is more intense, 44PD begins to play a major role. 44PD can further prevent the oxidation reaction from proceeding through its stable antioxidant mechanism under higher temperatures and more complex oxidation environments. Moreover, BHT performs better in the low to medium temperature range, while 44PD has more advantages in high temperature environments. After the two are compounded, the oil product can maintain good antioxidant properties in a wider temperature range.

[0035] Rust inhibitor: Rust inhibitor forms a protective film of passivation layer on the metal surface to isolate it from air, moisture, etc. in the atmosphere, thereby weakening the activity of the metal and slowing down the oxidation and rusting of the metal.

[0036] Preferably, the rust inhibitor of the present invention is super high base synthetic calcium sulfonate. In the rust prevention process, super high base synthetic calcium sulfonate plays an important role in acid-base neutralization. When the metal surface contacts acidic substances (such as sulfur dioxide in the air, carbon dioxide dissolved in water to form carbonic acid, etc.), the alkaline components of calcium sulfonate can react with it to neutralize the acidic substances, thereby preventing acid corrosion on the metal surface. Super high base synthetic calcium sulfonate plays a role in reducing friction and wear in oil. It forms an effective protective film on the friction surface. This protective film is formed by the adsorption and aggregation of calcium sulfonate molecules on the metal surface, which can effectively reduce the rigid contact of the metal surface and play a role in extending the life of the tool. At the same time, the protective film formed on the metal surface plays a role in isolating oxygen, and the anti-rust effect for ferrous metals is particularly excellent. Super high base synthetic calcium sulfonate also has a certain cleaning ability, which can prevent metal chips and other impurities generated during the honing process from depositing on the metal surface, and keep the metal surface clean. More specifically, the super high base synthetic calcium sulfonate is produced by Guangzhou Ruishengyan Chemical Technology Co., Ltd., model T106D.

[0037] Copper corrosion inhibitor: Copper corrosion inhibitor can be adsorbed on the metal surface to form a very thin film, protecting copper and other metals from corrosion by the atmosphere and harmful media. Specifically, the copper corrosion inhibitor is one of benzotriazole, toluene triazole, and mercaptobenzothiazole sodium salt. More specifically, the copper corrosion inhibitor is selected from Dongguan Hongchen Lubrication Technology Co., Ltd., model HC540. The copper corrosion inhibitor selected in this patent has good stability and good solubility, and plays a good protective role for copper alloys and copper alloy parts of processing equipment.

[0038] Defoamer: Defoamer is a substance that can reduce the surface tension of oil, etc., prevent the generation of foam, or reduce or eliminate the original foam. In order to prevent large foam during use, it is necessary to add defoamer to the oil. The defoamer is mainly some oil-soluble substances that can form a thin film on the surface of the liquid to prevent the formation and stability of bubbles.

[0039] Preferably, the defoamer of the present invention is an oil-soluble silicone defoamer. The addition of the defoamer can increase its solubility in oil to a certain extent, while taking into account the defoaming and anti-foaming effects, and has good stability. Specifically, the defoamer is selected from Laiyang Shengbang Silicone Technology Co., Ltd., model SI-X201. At 25°C, its viscosity is in the range of 500 to 1000mpa·s, has suitable fluidity and stability, and can be evenly dispersed in the oil system; the open cup flash point is higher than 270°C, which is a relatively high flash point and has good safety; at 25°C, the density is between 0.98 and 1.00, and the relative density is close to the common oily system, which can be well integrated with the oily environment to play a defoaming role.

[0040] The present invention also provides a method for preparing honing oil, comprising the following steps:

[0041] (1) Mix the base oil and synthetic ester in proportion, and stir the mixed solution at a temperature of 50-55°C until the mixed solution is uniform and transparent. Both the base oil and the synthetic ester are oil-soluble components with similar chemical properties. Mixing the two first can ensure that the two components can be quickly and evenly blended together. This uniform oil phase system provides a good carrier for the subsequent addition of antioxidants, rust inhibitors and other additives.

[0042] (2) Add an antioxidant to the mixed solution in step (1) and stir until the mixed solution is homogeneous and transparent. The antioxidant is added after the base oil and synthetic ester are mixed because the base oil and synthetic ester are susceptible to oxidation during subsequent storage and use. Antioxidants such as tert-butylhydroxyphenol (BHT) and N,N-di-sec-butyl-p-phenylenediamine (44PD) can play a role in time at this stage to prevent oil oxidation. If the antioxidant is added too late, the base oil and synthetic ester may have undergone partial oxidation reaction in the early stage, producing some oxidation products, which affect the quality and performance of the honing oil. In addition, in the system where the base oil and synthetic ester are uniformly mixed, the antioxidant can be better dispersed. This is because the role of the antioxidant is to capture free radicals in the system and prevent oxidation chain reactions. In a uniform oil phase system, the antioxidant molecules can more effectively contact the free radicals that may be generated, thereby improving the antioxidant efficiency.

[0043] (3) Add rust inhibitor, copper corrosion inhibitor and defoamer to the mixed solution in step (2) in sequence, and stir evenly to obtain the honing oil. Rust inhibitor, copper corrosion inhibitor and defoamer are relatively independent in function, but if added too early, they may interfere with the previous components. Moreover, in the actual use of honing oil, problems such as foam generation and metal corrosion are more prominent in the processing stage. Therefore, adding rust inhibitor, copper corrosion inhibitor and defoamer at the end can allow them to solve these problems that may arise in actual use after the honing oil has been basically prepared.

[0044] In order to further illustrate the honing oil provided by the present invention and its preparation method and application, the following examples and comparative examples are provided.

[0045] Test method:

[0046] The test objects of the present invention are the oils prepared in the embodiments and comparative examples.

[0047] (1) Viscosity is measured in accordance with GB / T 265 petroleum product kinematic viscosity determination method and dynamic viscosity calculation method.

[0048] (2) Open cup flash point is determined in accordance with GB / T 3536, Determination of flash point and fire point of petroleum products (Cleveland open cup method).

[0049] (3) Pour point is determined in accordance with GB / T 3535 Pour point determination method for petroleum products.

[0050] (4) The four-ball test is carried out in accordance with the standard: GB / T 12583 Lubricant Extreme Pressure Performance Determination Method (Four-Ball Method).

[0051] (5) Rotary oxygen and nitrogen testing is carried out in accordance with standard SH / T 0193 Lubricating oil antioxidant stability test method.

[0052] (6) Liquid phase corrosion is carried out in accordance with the standard: GB / T 11143 Anti-rust performance test method of mineral oil with inhibitor in the presence of water.

[0053] (7) Foam is measured according to the standard GB / T12579-2002 Lubricating oil foam characteristics determination method.

[0054] (8) There is no standard method for tapping torque. Follow the operating instructions of the Microtap / Meiketaipu (model TTT systen G8) tapping torque tester.

[0055] Embodiment 1

[0056] Table 1 Component composition of Example 1-1, Example 1-2, Example 1-3, Comparative Example 1-1, Comparative Example 1-2 and Comparative Example 1-3

[0057]

[0058] According to GB / T 265 petroleum product kinematic viscosity determination method and dynamic viscosity calculation method, GB / T 3536 petroleum product flash point and fire point determination method (Cleveland open cup method), GB / T 3535 petroleum product pour point determination method, the viscosity, open flash point, pour point, etc. were tested, and the results are shown in Table 2. The stability test results of the test objects of Example 1 and Comparative Example 1 are as follows: the viscosity of Example 1-1, Example 1-2 and Example 1-3 are all low, and the viscosity index, open flash point and pour point and other indicators are good. In terms of viscosity: Comparative Example 1-2 has the lowest viscosity, but the worst viscosity index; Comparative Example 1-1 and Comparative Example 1-2 have higher viscosity and medium viscosity index; in terms of open flash point: Comparative Example 1-3 is second, Comparative Example 1-1 is medium, and Comparative Example 1-2 is the worst; in terms of pour point: Comparative Example 1-2 is second, Comparative Example 1-3 is medium, and Comparative Example 1-1 is the worst. The base oil and synthetic ester are used in appropriate proportions, as shown in Table 2. The viscosity, viscosity index, open flash point and pour point can all meet the use requirements.

[0059] Table 2 Test results of stability of Example 1-1, Example 1-2, Example 1-3, Comparative Example 1-1, Comparative Example 1-2 and Comparative Example 1-3

[0060]

[0061] Embodiment 2

[0062] According to the component composition in Table 3, Example 2, Comparative Example 2-1, Comparative Example 2-2 and Comparative Example 2-3 were prepared.

[0063] Table 3 Components of Example 2, Comparative Example 2-1, Comparative Example 2-2 and Comparative Example 2-3

[0064]

[0065] The lubrication performance of Example 2, Comparative Examples 2-1, 2-2 and 2-3 was tested. The results of the four-ball PB and PD tests are shown in Table 4: Example 2 has the best lubrication performance, followed by Comparative Example 2-2, Comparative Example 2-3 performs moderately, and Comparative Example 2-1 performs the worst. Synthetic esters are added in appropriate proportions, and isooctyl stearate and fatty acid methyl ester are added in the proportions shown in Example 2. The thickness of the formed oil film is uniform and stable, and the wettability also reaches the best state. The lubricity presented is the best. See the data in Tables 4 and 5 for details. A dense oil film is formed on the surface of the metal material, which can effectively reduce friction and play a good lubrication role. According to GB / T 12583 lubricant extreme pressure performance determination method (four-ball method), PB and PD values ​​reach this conclusion, and the tapping torque has the same result; at the same time, the temperature rise performance of Example 2 is the best, followed by Comparative Example 2-2, Comparative Example 2-3 performs moderately, and Comparative Example 2-1 performs the worst. It can be concluded that the quality of lubrication performance can directly lead to the temperature rise, which can also solve the difficult problem of oil overheating during processing.

[0066] Table 4 Test results of PB and PD of Example 2, Comparative Example 2-1, Comparative Example 2-2 and Comparative Example 2-3

[0067] sample Appearance PB(kg) PD(kg) Example 2 Uniform 71 200 Comparative Example 2-1 Uniform 52 126 Comparative Example 2-2 Uniform 60 160 Comparative Examples 2-3 Uniform 57 160

[0068] Table 5 Test results of tapping torque of Example 2, Comparative Example 2-1, Comparative Example 2-2 and Comparative Example 2-3

[0069] sample △T(℃) Average torque(Ncm) Average torque(Ncm) Example 2 3.0 90 160 Comparative Example 2-1 10.5 130 230 Comparative Example 2-2 5.5 95 180 Comparative Examples 2-3 9.0 110 210

[0070] Embodiment 3

[0071] According to the component composition of Table 6, Example 3-1, Example 3-2, Comparative Example 3-1, Comparative Example 3-2, Comparative Example 3-3 and Comparative Example 3-4 were prepared.

[0072] Table 6 Component composition of Example 3-1, Example 3-2 and Comparative Example 3-1, Comparative Example 3-2

[0073]

[0074] The results of the rotating oxygen-nitrogen test of Example 3-1, Example 3-2, Comparative Example 3-1, Comparative Example 3-2, Comparative Example 3-3 and Comparative Example 3-4 are shown in Table 7: Example 3-1 performs best, Example 3-2 performs second, Comparative Example 3-3 performs moderately, Comparative Example 3-2 performs poorly, Comparative Example 3-1 performs worse, and Comparative Example 3-4 performs the worst. The following conclusions can be drawn from Table 7: Antioxidants have a very obvious antioxidant effect in oil products, and simply relying on the antioxidant capacity of the base oil is obviously insufficient; adding a single antioxidant and adding excessive antioxidants do not have a synergistic antioxidant effect. In addition, the best effect is achieved when the ratio of amine antioxidants to phenolic antioxidants is 1:1, as shown in Table 7; therefore, the ratio of adding antioxidants should be appropriate to achieve the desired effect.

[0075] Table 7 Rotary oxygen-nitrogen test results of Example 3-1, Example 3-2 and Comparative Example 3-1, Comparative Example 3-2

[0076] sample Appearance Time (min) Example 3-1 Uniform 480 Example 3-2 Uniform 430 Comparative Example 3-1 Uniform 322 Comparative Example 3-2 Uniform 378 Comparative Example 3-3 Uniform 391 Comparative Examples 3-4 Uniform 25

[0077] Embodiment 4

[0078] According to the component composition of Table 8, Example 4-1, Example 4-2, Comparative Example 4-1, Comparative Example 4-2 and Comparative Example 4-3 were prepared.

[0079] Table 8 Component composition of Example 4-1, Example 4-2, Comparative Example 4-1, Comparative Example 4-2 and Comparative Example 4-3

[0080]

[0081]

[0082] The test results of the rust-proof performance of Example 4-1, Example 4-2, Comparative Example 4-1, Comparative Example 4-2 and Comparative Example 4-3 are shown in Table 9: Example 4-1, Example 4-2 and Comparative Example 4-3 have the best rust-proof performance, but Comparative Example 4-3 is unstable and has precipitation; Comparative Example 4-1 and Comparative Example 4-2 have poor rust-proof performance. Excellent rust-proof performance is particularly important for ferrous metal processing. The dosage of the rust inhibitor in the system of the present invention is the best when it is 2%, as shown in Table 9. When the amount of rust inhibitor added is small, a dense protective film cannot be formed on the processed surface, and the rust-proof effect cannot be achieved (such as Comparative Example 4-2); and too much addition affects its dispersion on the processed surface, and a uniform protective film cannot be formed, which brings the risk of hydrolysis and does not achieve a good rust-proof effect (such as Comparative Example 4-3).

[0083] Table 9 Antirust performance test results of Example 4-1, Example 4-2, Comparative Example 4-1, Comparative Example 4-2 and Comparative Example 4-3

[0084]

[0085]

[0086] Embodiment 5

[0087] According to the component composition of Table 10, Example 5, Comparative Example 5-1, Comparative Example 5-2 and Comparative Example 5-3 were prepared.

[0088] Table 10 Component composition of Example 5, Comparative Example 5-1, Comparative Example 5-2 and Comparative Example 5-3

[0089]

[0090]

[0091] The test results of copper corrosion inhibition of Example 5, Comparative Example 5-1, Comparative Example 5-2 and Comparative Example 5-3 are shown in Table 11: Example 5 has the best copper corrosion inhibition performance, while Comparative Example 5-1 and Comparative Example 5-2 perform poorly. Comparative Example 5-3 is comparable to the Example, but the amount of copper corrosion inhibitor added in Comparative Example 5-3 is too much, and there is a risk of precipitation. The reason for the above differences is that when the amount of copper corrosion inhibitor added is small, an effective and uniform protective film cannot be formed, and the effect of isolating oxygen and copper alloy cannot be achieved; and when the amount added is large, due to the poor dispersion effect, it is not conducive to the formation of a protective film, so it is better to add an appropriate ratio.

[0092] Table 11 Defoaming performance test results of Example 5, Comparative Example 5-1, Comparative Example 5-2 and Comparative Example 5-3

[0093] sample Appearance Copper Corrosion (Grade) Example 5 Uniform 1B Comparative Example 5-1 Uniform 3A Comparative Example 5-2 Uniform 1B Comparative Example 5-3 Uneven, precipitation 2B

[0094] Embodiment 6

[0095] Example 6-1, Example 6-2, Comparative Example 6-1, Comparative Example 6-2 and Comparative Example 3 were prepared according to the component composition in Table 12.

[0096] Table 12 Component composition of Example 6-1, Example 6-2, Comparative Example 6-1, Comparative Example 6-2 and Comparative Example 3

[0097]

[0098]

[0099] The foam test results of Example 6-1, Example 6-2, Comparative Example 6-1, Comparative Example 6-2 and Comparative Example 6-3 are shown in Table 13: Example 6-1 has the best foam suppression, followed by Example 6-2, Comparative Example 6-2 has a medium performance, and Comparative Examples 6-1 and Comparative Examples 6-3 have poor performance. The reason for the above differences is that the defoaming agent is an organic silicon defoaming agent, which has limited solubility in the honing oil. When the addition ratio is small, it will not have a defoaming effect. When the addition amount is large, there will be a risk of precipitation, which will not achieve the defoaming and foam suppression effect. Therefore, it is better to add an appropriate ratio.

[0100] Table 13 Defoaming performance test results of Example 6, Comparative Example 6-1, Comparative Example 6-2 and Comparative Example 6-3

[0101]

[0102]

[0103] As can be seen from Example 1, the selection of low-viscosity base oil, as well as the selection of specific types and proportions, corresponds to excellent low-viscosity wetting properties, base oil and synthetic ester are added and prepared in proportion, and the oil film thickness, uniformity, and wettability can all reach the best balance point, which can effectively exert the lubrication performance of the formula, maximize the service life of the tool, and at the same time, the honing oil can achieve the purpose of continuous long-term use. As can be seen from Example 2, the selection of two different types of synthetic esters and the addition ratio correspond to the difference in lubricity. As can be seen from Example 3, the selection and addition ratio of different amine and phenol antioxidants are different, and the antioxidant effect is different. As can be seen from Example 4, different proportions of rust inhibitors are selected to screen out the rust-proof effect played by the best addition ratio. As can be seen from Example 5, the selection of oily copper corrosion inhibitors and the addition ratio are mainly for the best effect of copper corrosion inhibition.

[0104] In summary, the present invention aims at the problem of insufficient lubrication performance of metal honing oil described in the prior art, and combines different types of synthetic esters to achieve balanced and stable lubrication performance indicators. Aiming at the problems of wettability and cooling performance described in the prior art, the properties and matching methods of additives are fully considered, and a research scheme is proposed to ensure that wettability and overheating can be improved simultaneously under the combined action of auxiliary base oil and synthetic ester, so that the overall performance can reach a balanced and good state during use. The obtained honing oil formula can be specifically used in the processing application of ferrous metals.

[0105] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A honing oil, characterized in that: Calculated by mass percentage, it is composed of the following components: base oil: 70% to 80%, synthetic ester: 15% to 28%, antioxidant: 0.1% to 1.0%, rust inhibitor: 1.0% to 2.0%, copper corrosion inhibitor: 0.1% to 0.2%, and defoaming agent: 0.05% to 0.1%.

2. The honing oil according to claim 1, characterized in that The viscosity of the base oil at 40°C is 4.0 mm 2 / s~4.4mm 2 / s.

3. The honing oil according to claim 1, characterized in that: The synthetic ester is a compound product of isooctyl stearate and fatty acid methyl ester.

4. The honing oil according to claim 1, characterized in that: The antioxidant is a compound product of a phenolic antioxidant and an amine antioxidant.

5. The honing oil according to claim 4, characterized in that: The phenolic antioxidant is tert-butyl hydroxyphenol, and the amine antioxidant is N,N-di-sec-butyl-p-phenylenediamine; the addition ratio of the phenolic antioxidant to the amine antioxidant is 1:

1.

6. The honing oil according to claim 1, characterized in that: The rust inhibitor is super-high base synthetic calcium sulfonate.

7. The honing oil according to claim 1, characterized in that: The copper corrosion inhibitor is one of benzotriazole, toluenetriazole and mercaptobenzothiazole sodium salt.

8. The honing oil according to claim 1, characterized in that The defoamer is an organosilicon defoamer.

9. A method for preparing honing oil, characterized in that: The steps include: S1. Mix the base oil and the synthetic ester in proportion, and stir the mixed solution at a temperature of 50 to 55°C until the mixed solution is homogeneous and transparent; S2. Add an antioxidant to the mixed solution in step S1 and stir until the mixed solution is homogeneous and transparent; S3. Add a rust inhibitor, a copper corrosion inhibitor and a defoamer to the mixed solution in step S2 in sequence, and stir evenly to obtain the honing oil as described in any one of claims 1 to 8.

10. The honing oil according to any one of claims 1 to 8, characterized in that The honing oil is applied to ferrous metal processing.

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