Composition with lubricating effect and lubricant

Abstract

The invention relates to a composition with a lubricating effect. The invention also relates to a lubricant containing the composition, and based on 100 parts by mass of the lubricant, the composition accounts for 3-6 parts by mass. The lubricant is a water-based lubricant, more specifically, an oil-in-water (O / W) lubricant, and the lubricant is suitable for lubrication in the metal material machining process, and is particularly suitable for lubrication in the heavy-load machining processes of reaming, tapping, broaching and the like of the metal material.

Description

Technical Field

[0001] This invention relates to the field of lubrication technology, and particularly to a composition having a lubricating effect, and a lubricant containing the composition, wherein the lubricant containing the composition has excellent lubrication performance. Background Technology

[0002] This section provides background information relevant to this application, which does not necessarily constitute prior art.

[0003] In metal processing (such as cutting, drawing, rolling, turning, grinding, drilling, wire drawing, tube drawing, plate rolling, stamping, forging, etc.), in order to facilitate machining into the desired shape and prevent damage to the machining die, a lubricating film needs to be formed at the friction interface between the machining die and the metal material being processed, thereby reducing friction and wear on the contact surfaces. Existing technologies use oil-based lubricants (main solvents are mineral oil and / or vegetable oil) or water-based lubricants (main solvent is deionized water) to form a lubricating film on the surface of the metal material to achieve lubrication. Water-based lubricants have poor lubrication performance, resulting in high friction and poor machining performance during metal processing. Although oil-based lubricants provide excellent lubrication performance, they have technical problems such as flammability and poor cooling properties.

[0004] To address the aforementioned technical problems, a microemulsion lubricant has been developed. This microemulsion lubricant is prepared based on microemulsion dispersion technology, combining the advantages of water-based lubricants (good cooling properties and no flash point) with the lubrication properties of metalworking fluids. However, existing microemulsion lubricants have the following technical problems: 1. During the metal processing, the lubricating components such as mineral oil and natural / synthetic grease in microemulsion lubricants cannot quickly and effectively concentrate on the processing surface. This makes it impossible for microemulsion lubricants to provide sufficient lubrication in some heavy-duty processing, resulting in adverse situations such as insufficient processing accuracy and tool breakage. 2. Microemulsion lubricants have poor long-term chemical stability, are prone to demulsification and turbidity, and are inconvenient to store.

[0005] It should be noted that the "long-term chemical stability of the lubricant" described in this invention refers to the lubricant remaining turbid and unchanged after being left to stand at an ambient temperature of not less than 40°C for at least one month.

[0006] It should be noted that the term "water solubility" in this invention refers to a solubility of more than 0.1g in 100ml of deionized water at 20°C. Summary of the Invention

[0007] To address the technical problems existing in the prior art, this invention provides a composition with lubricating effects, and a lubricant containing the composition. The lubricant is a water-based lubricant, more specifically, an oil-in-water (O / W) lubricant. This lubricant is suitable for lubrication during metal processing, especially for lubrication during heavy-duty machining processes such as reaming, tapping, and broaching. When the lubricant is applied to the machined surface of the metal material, the temperature of the machined surface rises during processing. This temperature rise causes the lubricating components in the lubricant to rapidly precipitate, and the lubricating components uniformly cover the machined surface, forming a uniform and complete lubricating film, providing targeted and efficient lubrication. Using this lubricant, both lubrication and rust prevention can be achieved for the processed metal materials (including iron and its alloys, aluminum and its alloys, copper and its alloys, etc.).

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a composition having a lubricating effect, comprising at least one of the compounds shown in chemical formula (a), chemical formula (b), chemical formula (c), and chemical formula (d).

[0009] Chemical formula (a); Chemical formula (b); Chemical formula (c); Chemical formula (d); Where n and m are independent integers from 1 to 6.

[0010] The main chains of the compounds shown in chemical formula (a) and (b) are both starch main chains, having a weight-average molecular weight of about 50,000 to about 1,000,000 Daltons and a degree of substitution of 0.1 to 0.3; the main chains of the compounds shown in chemical formula (c) and (d) are both cellulose main chains, having a weight-average molecular weight of about 50,000 to about 2,500,000 Daltons and a degree of substitution of 0.1 to 0.3.

[0011] Among them, the relative molecular weights (Mw) of the side chains of the compounds shown in chemical formula (a), (b), (c), and (d) are all 1.5-2 kDa. Within this range, a balance between low-temperature fluidity and high-temperature lubricity can be achieved. If the molecular weight is below 1.5 kDa, the migration rate is fast but the adsorption force is weak, making it easy to desorb from the processing interface, resulting in a thin and discontinuous lubricating film. If the molecular weight is above 2 kDa, the dispersibility in deionized water decreases, the uniformity of the lubricating film formed on the processing interface deteriorates, and even deposition failure may occur.

[0012] On the other hand, the present invention also provides a lubricant whose main solvent is deionized water, the lubricant contains the above-described composition, the lubricant has excellent long-term chemical stability, and the lubricant can achieve efficient lubrication over a wide temperature range.

[0013] Preferably, based on 100 parts by weight of lubricant, the composition comprises 3-6 parts by weight. A range below this will reduce the stability of the lubricant during long-term storage at room temperature, while a range above this will increase the viscosity of the lubricant, thereby weakening the coating properties of the lubricant on metal materials.

[0014] The lubricant of the present invention can be manufactured, for example, by adding a given composition to water and then adding other additives as needed, but is not limited to these methods. It should be noted that, after manufacturing the lubricant, a pH adjuster can be used to adjust the pH of the lubricant to 7 or higher, which can further improve the long-term chemical stability of the lubricant.

[0015] Without affecting the technical effect of the present invention, the lubricant may also include one or more of the following as needed: oil-soluble esters, mineral oil, emulsifiers, corrosion inhibitors, rust inhibitors, auxiliary lubricants, pH adjusters, bactericides, and defoamers.

[0016] In one or more embodiments, based on 100 parts by weight of a lubricant, the lubricant comprises the following components in parts by weight: 1.5-2.5 parts of oil-soluble esters, 28-32 parts of mineral oil, 1-8 parts of auxiliary lubricant, 1-2 parts of emulsifier, 0.2-0.6 parts of corrosion inhibitor, 3-6 parts of composition, 0.4-0.8 parts of rust inhibitor, 3-5 parts of pH adjuster, 1-2 parts of bactericide, 0.05-0.2 parts of defoamer, and the balance being deionized water. This lubricant is suitable for lubrication of aluminum and aluminum alloy materials during machining. The preparation method of this lubricant includes the following steps: S1. Add deionized water, oil-soluble esters, mineral oil, auxiliary lubricant, emulsifier, and rust inhibitor to the reactor. Stir at 80-100 rpm / min, keep the reaction temperature below 40℃, and stir evenly for 30-120 minutes to obtain emulsion A. S2. Add the composition, corrosion inhibitor, bactericide, pH adjuster and defoamer to emulsion A in sequence. Stir at 30-200 rpm / min and at a reaction temperature not exceeding 40°C. Stir evenly for 30-120 minutes. After the solution becomes transparent, cool to room temperature to obtain the lubricant.

[0017] The lubricant provided by this invention exhibits excellent long-term chemical stability. It can rapidly form a complete, uniform, and highly lubricating film on the surface of metal materials at high temperatures, while also providing excellent rust prevention. The lubricant provided by this invention can be used in machining processes such as cutting, rolling, drawing, stretching, pressing, extrusion, turning, planing, grinding, boring, and drilling of metal materials. Examples of metal materials suitable for using the lubricant of this invention include iron, stainless steel, alloy steel, aluminum alloys, aluminum, magnesium, copper, and titanium. The shape of the metal material varies depending on the application, and examples include plates, bars, and tubes, but it is not limited to these shapes.

[0018] The lubricant application method provided by this invention allows for contact with metal materials using known methods such as dipping, spraying, casting, and brushing. The key is to ensure the lubricant adequately covers the surface of the metal material, especially the machined surface, without any particular limitation on the contact time. The contact between the lubricant and the metal material can occur during or before processing. If the contact is before processing, the lubricant can be applied to the surface of the metal material and then dried using known methods, such as heat drying or air drying, to form a lubricating film. There are no particular limitations on the drying temperature and time. If the contact is during processing, the temperature of the machined surface of the metal material will rise rapidly due to friction with the processing mold. At this time, the lubricant in contact with the machined surface will undergo localized micro-demulsification, allowing the lubricating components to quickly precipitate and form a complete and uniform lubricating film on the machined surface.

[0019] Compared to existing lubricants, the lubricant of this invention, when used in the metal processing, has at least the following beneficial effects: 1. Although the main solvent of the lubricant provided by the present invention is deionized water, the lubricating performance of the lubricant provided by the present invention is exceptionally superior compared to that of oil-based lubricants. It is speculated that the lubricant provided by the present invention can quickly cover the processing surface of the metal material, and as the temperature of the processing surface increases, the lubricating components of the lubricant can quickly precipitate out and form a complete and uniform lubricating film on the processing surface. 2. Although the main solvent of the lubricant provided by the present invention is deionized water, compared with existing water-based lubricants, the lubricant provided by the present invention will not produce water rust on the contact surface with metal materials; 3. Using the lubricant provided by the present invention, a lubricating film with excellent lubricity and rust prevention can be obtained. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0021] The invention will be described in more detail along with its effects by presenting embodiments of the invention together with comparative examples. It should be noted that the invention is not limited to these embodiments.

[0022] [Other components of the lubricant] In addition to the composition described above, the lubricant may also contain the following components.

[0023] Oil-soluble esters include, for example, modified castor oil oleate, pentaerythritol oleate, trimethylolpropane oleate, trimethylolpropane coconut oil oleate, and isooctyl oleate. They can be used alone or in combination of two or more.

[0024] Mineral oils, such as naphthenic mineral oils and paraffinic mineral oils, can be used alone or in combination of two or more types.

[0025] Auxiliary lubricants can include, for example, oils, soaps, waxes, layered amino acid compounds, and organically modified clay minerals. These can be used alone or in combination of two or more. Oils used as lubricants include, for example, vegetable oils, synthetic oils, and mineral oils. More specifically, palm oil, castor oil, rapeseed oil, engine oil, turbine oil, ester oil, silicone oil, tall oil, and oleic acid can be used. Soaps can be, for example, metal salts of fatty acids. More specifically, examples include metal salts of saturated or unsaturated fatty acids with 8-22 carbon atoms, such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, itaconic acid, oleic acid, and stearic acid. Examples of these metal salts include alkali metal salts such as sodium and potassium salts, as well as polyvalent metal salts such as calcium, zinc, magnesium, and barium salts. Examples of waxes include polyethylene wax, polypropylene wax, carnauba wax, paraffin wax, and polytetrafluoroethylene (PTFE).

[0026] Surfactants, such as nonionic surfactants, anionic surfactants, amphoteric surfactants, and cationic surfactants, can be appropriately selected based on their molecular structure and HLB content. Examples include C16 fatty alcohol polyoxyethylene ether, dodecyl polyoxyethylene ether, Span 80, C16 alkylbenzene sulfonate sodium, dodecyl sulfonate sodium, and Tween 80. They can be used alone or in combination of two or more. By adding surfactants to the lubricant of this invention, cleaning effects and improved wettability on metal surfaces can be achieved.

[0027] Corrosion inhibitors, for example, include benzotriazole, methylbenzotriazole, mercaptobenzothiazole, modified phosphate esters (Wingenlub 7073), monoethanolamine borate, triethanolamine borate, etc. They can be used alone or in combination of two or more.

[0028] Rust inhibitors can be exemplified by dodecanoic acid, cyclocarboxypropyl oleic acid, sebacic acid, boric acid, isononanoic acid, neodecanoic acid, 2,4,6-tris(aminohexanoic acid)-1,3,5-triazine, etc. They can be used alone or in combination of two or more.

[0029] pH adjusters can be exemplified by triethanolamine, diethanolamine, monoethanolamine, monoisopropanolamine, dicyclohexylamine, dimethylethanolamine, etc. They can be used alone or in combination of two or more.

[0030] Examples of fungicides include benzisothiazolinone, bismorpholine methane, 2-butyl-1,2-benzisothiazolin-3-one, BUSAN 77, Kathon, etc. They can be used alone or in combination of two or more.

[0031] Defoamers, for example, include AFE 1267, MS575, PE10100, DF-354, DC-51, and Surfynol 2502. They can be used alone or in combination of two or more.

[0032] Existing water-based lubricants often use binders to increase their viscosity and adhesion, allowing them to adhere better to the surface of metal materials during use, thus achieving better lubrication. The binder also prevents the lubricating film from breaking prematurely, ensuring the durability and stability of the lubrication effect. Examples of existing binders include water-soluble inorganic acid salts (such as sulfate salts, borate salts, phosphate salts, tungstate salts, and silicate salts), water-soluble organic acid salts (such as polybasic acid salts with 3-6 carbon atoms and hydroxyl groups), and water-dispersible or water-soluble resins (such as acrylic resins, phenolic resins, urethane resins, epoxy resins, polyester resins, and isobutylene resins). It has been unexpectedly discovered that the composition provided by this invention can provide an effect similar to a binder. Therefore, even when the lubricant contains the composition but not the aforementioned binder, it still adheres well to the surface of the metal material, and the adhesion effect is not weakened.

[0033] Existing water-based lubricants stabilize their components by adding thickeners. Examples of existing thickeners include water-based polymers (such as hydroxyethyl cellulose, carboxymethyl cellulose, polyacrylamide, sodium polyacrylate, sulfonic acid-modified sodium polyacrylate, polyvinylpyrrolidone, and polyvinyl alcohol) and inorganic thickeners (such as silica, bentonite, kaolin, mica, montmorillonite, and lithium montmorillonite). It has been unexpectedly discovered that the composition provided by this invention can provide effects similar to thickeners. Therefore, even when the lubricant contains the composition but not the aforementioned thickeners, the composition can still stabilize the components dispersed in deionized water and improve the coating properties onto metal materials.

[0034] [Examples 1-4] Example 1 provides a composition with lubricating effect (hereinafter referred to as composition a), which is a compound shown in chemical formula (a).

[0035] Chemical formula (a), wherein the weight-average molecular weight of the starch backbone is approximately 500,000 Daltons, the degree of substitution of the side chains is approximately 0.2, n=1, m=6.

[0036] Example 2 provides a composition with lubricating effect (hereinafter referred to as composition b), which is a compound shown in chemical formula (b).

[0037] Chemical formula (b), wherein the weight-average molecular weight of the starch backbone is approximately 500,000 Daltons, the degree of substitution of the side chains is approximately 0.2, n=6, m=1.

[0038] Example 3 provides a composition with lubricating effect (hereinafter referred to as composition c), which is a compound shown in chemical formula (c).

[0039] Chemical formula (c), wherein the weight-average molecular weight of the cellulose backbone is approximately 400,000 Daltons, the degree of substitution of the side chains is approximately 0.2, n=3, m=3.

[0040] Example 4 provides a composition with lubricating effect (hereinafter referred to as composition d), which is a compound shown in chemical formula (d).

[0041] Chemical formula (d), wherein the weight-average molecular weight of the cellulose backbone is approximately 400,000 Daltons, the degree of substitution of the side chains is approximately 0.2, n = 2, m = 4.

[0042] [Examples 5-8] Examples 5-8 each provide a lubricant, and the specific composition is shown in Table 1.

[0043] Example 9 provides a lubricant, the specific composition of which is shown in Table 2.

[0044] Table 1

[0045] The lubricants provided in Examples 5-9 are all microemulsion water-based lubricants with a clear and transparent appearance.

[0046] The lubricants provided in Examples 5-8 were all prepared by the following steps: S1. C10-C16 fatty alcohol polyoxyethylene ether, C10-16 sodium alkylbenzene sulfonate and deionized water are mixed and stirred in a reactor at a stirring speed of 60 rpm / min and a reaction temperature of 25℃. After stirring evenly for 60 minutes, emulsion A is obtained. S2. Add the composition, triethanolamine and defoamer to emulsion A in sequence, mix and stir at a stirring speed of 80 rpm / min and a reaction temperature of 25°C. After stirring evenly for 60 minutes, a lubricant is obtained.

[0047] [Comparative Example] Comparative Examples 1-5 each provide a lubricant, and the specific composition is shown in Table 2. The lubricants provided in Comparative Examples 1-5 are all clear and transparent in appearance.

[0048] Table 2

[0049] The lubricants provided in Example 9 were all prepared by the following steps: S1. Add 2 parts pentaerythritol oleate, 20 parts mineral oil, 5 parts castor oil derivative polyoxyethylene ether, 3 parts oleic acid, 2 parts C10-C16 fatty alcohol polyoxyethylene ether, 1 part C10-16 sodium alkylbenzene sulfonate, 0.4 parts dodecanoic acid and deionized water to the reactor. Stir at 100 rpm / min, react at 25℃, and stir uniformly for 100 minutes to obtain emulsion A. S2. Add 2 parts of composition a, 3 parts of composition c, 0.4 parts of benzotriazole, 1 part of benzisothiazolinone, 3 parts of triethanolamine, and 0.05 parts of defoamer AFE-1267 to emulsion A in sequence. Stir at 100 rpm / min and at a reaction temperature of 25°C for 60 minutes to obtain a yellow, clear, and transparent microemulsion water-based cutting fluid.

[0050] [Friction Coefficient Test] The friction coefficients of the lubricants provided in Examples 5-9 and Comparative Examples 1-5 were tested using an MMW-1 vertical universal tribometer. Specifically, (during the friction coefficient test) the lubricant was applied to the contact surface of a friction pair consisting of silicon nitride ceramic balls and a ductile iron disc. The friction coefficient of the lubricant was tested at room temperature using the MMW-1 vertical universal tribometer. The test pressure was 200 N, and the test time was 30 minutes. The average friction coefficient of the lubricant was obtained from the friction coefficient curve. The results are shown in Table 3. As can be seen from Table 3, the composition provided by this invention provides excellent lubrication performance. When applied to a friction pair, the lubricant provided by this invention has a low friction coefficient, thereby reducing energy loss due to friction. It is a water-based lubricant with excellent lubrication performance.

[0051] [Long-term chemical stability testing] Long-term chemical stability tests were conducted on the lubricants provided in Examples 5-9 and Comparative Examples 1-5. Specifically, 100 mL of lubricant was filled into a transparent polyethylene container and stored in a constant temperature bath at 50°C. The appearance of the lubricant was visually inspected at 1 day, 1 week, and 1 month, according to the following evaluation criteria. The results are shown in Table 3. It should be noted that if the evaluation result is "△" or higher, the long-term chemical stability of the lubricant is considered to be at a practical level.

[0052] The evaluation criteria are as follows: ○: No change in turbidity was observed after 1 month; △: No change in turbidity was observed after 1 week, but a change in turbidity was observed after 1 month; ×: Turbidity changes were observed after 1 day or 1 week.

[0053] [Lubricating film lubrication performance test] The lubrication performance of the lubricating film was tested on the lubricants provided in Examples 5-9 and Comparative Examples 1-5. The details are as follows: S1. Using Q355D steel wire (the standard for Q355D is GB / T1591-2018 "Low Alloy High Strength Structural Steel"), the Q355D steel wire has a diameter φ of 13mm and a length of 1.5m. The Q355D steel wire is subjected to alkali degreasing, water washing, pickling, water washing, neutralization and water washing processes in sequence to obtain a fresh and clean surface for the Q355D steel wire. S2. A treated Q355D steel wire was immersed in a lubricant at a temperature of 60°C for 30 seconds, followed by drying (at an ambient temperature of 100°C for 5 minutes) to obtain a test sample. Simultaneously, another treated Q355D steel wire was immersed in a lubricant at a temperature of 60°C for 80 seconds, followed by drying (at an ambient temperature of 100°C for 5 minutes) to obtain a comparative test sample. S3. The test samples and control samples underwent wire drawing. The wire drawing was performed using an R-type die (11.85 mm in diameter) to draw the steel wire, according to the following evaluation criteria. The results are shown in Table 3. It should be noted that an evaluation result of "○" indicates that when the lubricant comes into contact with the metal surface in a short time, the lubricating components of the lubricant can quickly and effectively concentrate on the metal surface, thereby forming a lubricating film with excellent lubrication performance.

[0054] The evaluation criteria are as follows: ○: The lubricating film has good lubricity, and the degree of ablation and scratches observed on the surface of Q355D steel wire and in R-type mold is less than 10% by area. △: The lubricity of the lubricating film is qualified. Ablation and scratches are observed on the surface of Q355D steel wire and in R-type molds in an area of ​​more than 10% and less than 25% by area. ×: The lubrication film has poor lubricity. Burning and scratches are observed on the surface of Q355D steel wire and in the R-type die in an area of ​​more than 25% by area. Alternatively, Q355D steel wire may break during wire drawing due to insufficient lubrication.

[0055] [Corrosion Resistance Test of Lubricating Film] The corrosion resistance of the lubricating film was tested on the lubricants provided in Examples 5-9 and Comparative Examples 1-5. The details are as follows: S1. Q355D steel plate (Q355D's execution standard is GB / T1591-2018 "Low Alloy High Strength Structural Steel") is used. The Q355D steel wire is 10cm×10cm in size and 1cm thick. The Q355D steel plate is subjected to alkali degreasing, water washing, pickling, water washing, neutralization and water washing processes in sequence to obtain a fresh and clean surface for the Q355D steel plate. S2. Immerse the Q355D steel plate in lubricant, and control the temperature of the lubricant to 60℃ and the immersion time to 60s. Then, dry it (dry it at an ambient temperature of 100℃ for 5 minutes) to obtain the test sample.

[0056] S3. After placing the test sample in a constant temperature and humidity chamber at 30℃ and 80% for 120 hours, the area of ​​rust produced was measured according to the following evaluation criteria. The results are shown in Table 3. It should be noted that when the evaluation result is "○" or above, it can be said that it shows excellent corrosion resistance even in a humid environment. Therefore, it is judged that the lubricant can form a complete and uniform lubricating film when it comes into contact with the metal material surface in a short time.

[0057] The evaluation criteria are as follows: ○: The rust area rate is less than 10%; △: The rust area rate is more than 10% but less than 30%; ×: The rust area rate is over 30%.

[0058] Table 3

[0059] As can be clearly seen from Table 3, the lubricant provided by the present invention provides excellent long-term chemical stability and excellent lubrication performance. Furthermore, the lubricant provided by the present invention can quickly form a complete and uniform lubricating film on the surface of metal materials.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A composition having a lubricating effect, characterized in that, It includes at least one of the compounds shown in chemical formula (a), chemical formula (b), chemical formula (c), and chemical formula (d); Chemical formula (a); Chemical formula (b); Chemical formula (c); Chemical formula (d); Where n and m are independent integers from 1 to 6; The main chains of the compound shown in chemical formula (a) and the compound shown in chemical formula (b) are both starch main chains, which have a weight-average molecular weight of about 50,000 to about 1,000,000 Daltons and a degree of substitution of 0.1 to 0.

3. The main chains of the compounds shown in chemical formula (c) and (d) are both cellulose main chains, which have a weight-average molecular weight of about 50,000 to about 2.5 million and a degree of substitution of 0.1 to 0.

3.

2. The composition according to claim 1, characterized in that, The relative molecular weights of the side chains of the compounds shown in chemical formula (a), (b), (c), and (d) are all 1.5-2 kDa.

3. A lubricant, characterized in that, The main solvent of the lubricant is deionized water, and the lubricant comprises the composition according to claim 1 or 2.

4. The lubricant according to claim 3, characterized in that, Based on 100 parts by weight of the lubricant, the composition comprises 3-6 parts by weight.

5. The lubricant according to claim 4, characterized in that, The lubricant also includes one or more of the following: oil-soluble esters, mineral oil, emulsifiers, corrosion inhibitors, rust inhibitors, auxiliary lubricants, pH adjusters, bactericides, and defoamers.

6. The lubricant according to claim 5, characterized in that, Based on 100 parts by weight of the lubricant, the lubricant comprises the following components in parts by weight: 1.5-2.5 parts of oil-soluble esters, 28-32 parts of mineral oil, 1-8 parts of auxiliary lubricant, 1-2 parts of emulsifier, 0.2-0.6 parts of corrosion inhibitor, 3-6 parts of composition, 0.4-0.8 parts of rust inhibitor, 3-5 parts of pH adjuster, 1-2 parts of bactericide, 0.05-0.2 parts of defoamer, and the balance being deionized water.

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