Carbon steel stamping oil composition and preparation method thereof

Abstract

The invention relates to the technical field of lubricants for metal processing, in particular to a carbon steel stamping oil composition and a preparation method thereof. The carbon steel stamping oil composition is prepared from the following preparation raw materials in parts by weight: 40 to 80 parts of base oil, 10 to 20 parts of an oiliness agent, 5 to 20 parts of a viscosity improver, 5 to 15 parts of an extreme pressure anti-wear agent, 2.5 to 5 parts of a surfactant, 3 to 5 parts of oleic soap and 0.2 to 1 part of an anti-rust agent, the extreme pressure anti-wear agent comprises phosphate ester and phosphite ester or phosphate ester ammonium salt; the mass ratio of phosphate to phosphite or phosphate ammonium salt is (2-5): 1; the surfactant comprises at least one of fatty alcohol polyether, span 80, nonylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether phosphate. The carbon steel stamping oil composition provided by the invention has high lubricity, good heat dissipation and extreme pressure antiwear property, and can meet the processing requirements of high-strength carbon steel.

Description

Technical Field

[0001] The invention relates to the technical field of lubricants for metal processing, and in particular to a carbon steel stamping oil composition and a preparation method thereof. Background Art

[0002] There are many problems with the carbon steel stamping oil on the market. For example, for high-strength carbon steel materials, burrs and scratches are easily produced during the stamping process, affecting the quality and precision of the finished product. The existing products are mainly divided into three categories: volatile stamping oil, water-based stamping oil and oily stamping oil. Among them, volatile stamping oil has low viscosity and poor lubrication performance. It will volatilize gas during use. The volatile gas has a strong odor and poses a certain threat to the health of workers. Although water-based stamping oil has no odor problem, its lubricity is still insufficient and cannot meet the demanding processing requirements of high-strength carbon steel stamping. Although oily stamping oil has good lubrication performance, it often requires a subsequent annealing process to remove residual oil on the plate. The annealing process takes a long time, which not only consumes a lot of energy, but also pollutes the environment.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a carbon steel stamping oil composition and a preparation method thereof, aiming to solve the technical problems in the prior art such as insufficient lubrication performance of carbon steel stamping oil, cumbersome subsequent processing and low product surface quality.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The invention provides a carbon steel stamping oil composition. The raw materials for preparing the carbon steel stamping oil composition include, by weight: 40-80 parts of base oil, 10-20 parts of oiliness agent, 5-20 parts of viscosity improver, 5-15 parts of extreme pressure anti-wear agent, 2.5-5 parts of surfactant, 3-5 parts of oleic acid soap and 0.2-1 part of rust inhibitor; the extreme pressure anti-wear agent includes: phosphate, and phosphite or phosphate ammonium salt; the mass ratio of the phosphate to the phosphite or phosphate ammonium salt is (2-5):1; the surfactant includes at least one of fatty alcohol polyether, Span 80, nonylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether phosphate.

[0007] The carbon steel stamping oil composition, wherein the extreme pressure anti-wear agent includes phosphate ester and phosphite ester; the mass ratio of the phosphate ester to the phosphite ester is (2-3):1.

[0008] The carbon steel stamping oil composition, wherein the extreme pressure anti-wear agent includes phosphate ester and phosphate ammonium salt; the mass ratio of the phosphate ester to the phosphate ammonium salt is (3.5-5):1.

[0009] The carbon steel stamping oil composition, wherein the base oil comprises a narrow fraction desulfurized and dearomatized mineral oil.

[0010] The carbon steel stamping oil composition, wherein the oiliness agent includes at least one of tetrameric ricinoleate, hexameric ricinoleate, trimethylolpropane oleate, coconut oil fatty acid, glycerol monooleate, and isooctyl stearate.

[0011] The carbon steel stamping oil composition, wherein the viscosity improver includes at least one of polyisobutylene and polymethacrylate; the mass ratio of the viscosity improver to the base oil is 1:(10-5).

[0012] The carbon steel stamping oil composition, wherein the oleic acid soap comprises at least one of triethanolamine oleic acid soap, isomeric alcohol oleic acid soap, diethanolamine oleic acid soap, ethylenediamine oleic acid soap, and isomeric alcohol oleic acid soap derivatives.

[0013] The carbon steel stamping oil composition, wherein the carbon chain length of the isomeric alcohol in the isomeric alcohol oleic acid soap and the isomeric alcohol oleic acid soap derivative is 4-8.

[0014] The carbon steel stamping oil composition, wherein the rust inhibitor includes at least one of methyl benzotriazole, calcium petroleum sulfonate, zinc cyclohexaneate, benzotriazole derivatives, and tribasic acid.

[0015] A second aspect of the present invention provides a method for preparing a stamping oil, which is used to prepare the carbon steel stamping oil composition as described above, comprising the following steps:

[0016] S100. Mix the base oil, oiliness agent and viscosity improver and stir evenly;

[0017] S200. Add extreme pressure anti-wear agent and rust inhibitor and stir evenly;

[0018] S300. Add oleic acid soap and surfactant, stir evenly, and obtain the carbon steel stamping oil composition.

[0019] Beneficial effects: The first aspect of the present invention provides a carbon steel stamping oil composition, which has high lubricity, good heat dissipation and extreme pressure anti-wear properties through the combination of components such as base oil, oiliness agent, viscosity improver, extreme pressure anti-wear agent and oleic acid soap, and can meet the processing requirements of high-strength carbon steel. The workpiece is not easy to stick, the surface quality is high and easy to clean, no subsequent annealing process is required, the waste liquid after cleaning is easy to be processed later, it is safe and environmentally friendly and has no harm to the human body.

[0020] The second aspect of the present invention provides a method for preparing stamping oil, which is used to prepare the carbon steel stamping oil composition as described above. The preparation method has simple procedures, is easy to implement, and is suitable for industrial large-scale production. DETAILED DESCRIPTION

[0021] The present invention provides a carbon steel stamping oil composition and a preparation method thereof. In order to make the purpose, technical scheme and effect of the present invention clearer and more specific, the present invention is further described in detail by the following examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The invention provides a carbon steel stamping oil composition. The raw materials for preparing the carbon steel stamping oil composition include, by weight: 40-80 parts of base oil, 10-20 parts of oiliness agent, 5-20 parts of viscosity improver, 5-15 parts of extreme pressure anti-wear agent, 2.5-5 parts of surfactant, 3-5 parts of oleic acid soap and 0.2-1 part of rust inhibitor; the extreme pressure anti-wear agent includes: phosphate, and phosphite or phosphate ammonium salt; the mass ratio of the phosphate to the phosphite or phosphate ammonium salt is (2-5):1; the surfactant includes at least one of fatty alcohol polyether, Span 80, nonylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether phosphate.

[0023] The carbon steel stamping oil composition provided by the present invention can be applied to carbon steel stamping production of various strengths, plays a lubricating role, meets the processing requirements of different materials and different strengths, effectively protects stamping workpieces and processed products, improves the surface brightness of carbon steel workpieces and reduces surface roughness, and prolongs the workpiece precision and the service life of tools.

[0024] Extreme pressure anti-wear agents are used to form an oil film with stronger load-bearing capacity under harsh processing conditions to block contact between workpieces, thereby reducing surface roughness. Compared with sulfur-containing additives, phosphorus additives have good biodegradability and are environmentally friendly. In addition, phosphorus extreme pressure anti-wear agents have little corrosion on the surface of carbon steel, making the finished carbon steel product have good gloss and high layout quality. The phosphorus extreme pressure anti-wear agent selected by the present invention can give the carbon steel stamping oil composition good extreme pressure anti-wear performance, and can provide extreme pressure lubrication under harsh processing conditions.

[0025] After stamping, there is a flushing process. By combining a specific proportion and type of phosphorus extreme pressure agent, the surface residue can be reduced. At the same time, some phosphate esters have anti-rust function, which can better protect carbon steel.

[0026] Preferably, the phosphate ester may be at least one of isotridecyl phosphate, oleth-2 phosphate, and fatty alcohol ethoxylated phosphate. The phosphite ester may be at least one of dialkyl phosphite and propylene glycol phosphite. The ammonium phosphate salt may be allyl phosphate ammonium salt.

[0027] Preferably, when the extreme pressure anti-wear agent comprises phosphate ester and phosphite ester, the mass ratio of the phosphate ester to the phosphite ester is (2-3):1.

[0028] Preferably, when the extreme pressure anti-wear agent comprises phosphate ester and phosphate ammonium salt, the mass ratio of the phosphate ester to the phosphate ammonium salt is (3.5-5):1.

[0029] Preferably, the fatty alcohol polyether includes at least one of fatty alcohol polyoxyethylene ether phosphate and fatty alcohol polyoxyethylene ether. The polyethylene glycol includes at least one of PEG400MO, PEG400DO, PEG600MO and PEG600DO.

[0030] Preferably, the base oil comprises narrow-fraction desulfurized and dearomatized mineral oil. In the present invention, the base oil has the highest content in the formula, and plays a vital role in the lubricity of the entire system and the quality of the product layout. Narrow-fraction desulfurized and dearomatized mineral oil does not corrode the surface of carbon steel materials, and the finished product has high brightness. At the same time, narrow-fraction dearomatized mineral oil is non-toxic and odorless. The risk of contact for on-site workers is low and will not pose a threat to their health. Specifically, the base oil comprises at least one of 150SN, 100N, and 60N.

[0031] Preferably, the oiliness agent includes at least one of tetraricinoleate, hexaricinoleate, trimethylolpropane oleate, coconut oil fatty acid, glycerol monooleate, and isooctyl stearate.

[0032] Preferably, the viscosity improver includes at least one of polyisobutylene and polymethacrylate. Both of the above viscosity improvers can well improve viscosity, enhance oil film strength and improve lubricity, and better meet the processing requirements of high-strength carbon steel. In addition, by controlling the amount of oleic acid soap and surfactant, the viscosity improver can be easily washed away and will not remain on the product surface, thereby improving the surface quality.

[0033] Preferably, the mass ratio of the viscosity improver to the base oil is 1:(10-5).

[0034] Preferably, the oleic acid soap includes at least one of triethanolamine oleic acid soap, isomeric alcohol oleic acid soap, diethanolamine oleic acid soap, ethylenediamine oleic acid soap, and isomeric alcohol oleic acid soap derivatives. The use of oleic acid soap can make the entire system easier to rinse and reduce the use of surfactants. Too much surfactant will cause competitive adsorption between the carbon steel plate and the lubricating component, resulting in poor lubricity. The above oleic acid soap can improve the lubricity and emulsification of the carbon steel stamping oil composition system, and is easy to clean and remove after processing.

[0035] Preferably, in the isomeric alcohol oleic acid soap or the isomeric alcohol oleic acid soap derivative, the carbon chain length of the isomeric alcohol is 4 to 8. The isomeric alcohol oleic acid soap within this range has both good lubricity and excellent cleaning properties in the formulation system of the present invention.

[0036] Preferably, the HLB value of the oleic acid soap is 6.0 to 12. By limiting the HLB value, the system is stable, easy to emulsify, and the amount of surfactant required is small.

[0037] Preferably, the rust inhibitor includes at least one of methyl benzotriazole, calcium petroleum sulfonate, zinc cyclohexaneate, benzotriazole derivatives, and tribasic acid.

[0038] A second aspect of the present invention provides a method for preparing a stamping oil, which is used to prepare the carbon steel stamping oil composition as described above, comprising the following steps:

[0039] S100. Mix the base oil, oiliness agent and viscosity improver and stir evenly;

[0040] S200. Add extreme pressure anti-wear agent and rust inhibitor and stir evenly;

[0041] S300. Add oleic acid soap and surfactant, stir evenly, and obtain the carbon steel stamping oil composition.

[0042] Preferably, in S100 and S200, the temperature is controlled at 60-70° C. during stirring.

[0043] The present invention is further described below with reference to specific examples and comparative examples.

[0044] Example 1

[0045] A carbon steel stamping oil composition, wherein the raw materials for its preparation include, by weight: 61.5 parts of base oil, 15 parts of oiliness agent, 10 parts of viscosity improver, 5 parts of extreme pressure anti-wear agent, 5 parts of oleic acid soap, 3 parts of surfactant, and 0.5 parts of rust inhibitor;

[0046] Wherein, the base oil is 150SN;

[0047] The oiliness agent is tetrameric ricinoleate;

[0048] The viscosity improver is polyisobutylene;

[0049] The extreme pressure anti-wear agent is a mixture of isotridecyl phosphate and dialkyl phosphite in a mass ratio of 2:1;

[0050] The oleic acid soap is triethanolamine oleic acid soap;

[0051] The surfactant is dodecylphenol polyoxyethylene ether;

[0052] The rust inhibitor is a benzotriazole derivative;

[0053] The preparation method of the carbon steel stamping oil composition comprises the following steps:

[0054] A001. Mix the base oil, oiliness agent and viscosity improver, and stir at a constant speed at a temperature of 50℃~60℃;

[0055] A002. Add extreme pressure anti-wear agent and oleic acid soap, and stir at a constant speed at 50℃~60℃;

[0056] A003. Add a rust inhibitor and a surfactant, and stir at a constant speed at room temperature to obtain the carbon steel stamping oil composition.

[0057] Example 2

[0058] A carbon steel stamping oil composition, wherein the raw materials for its preparation include, by weight: 70 parts of base oil, 10 parts of oiliness agent, 6 parts of viscosity improver, 7 parts of extreme pressure anti-wear agent, 4 parts of oleic acid soap, 2.5 parts of surfactant, and 0.5 parts of rust inhibitor;

[0059] Wherein, the mineral oil is 100N;

[0060] The oiliness agent is coconut oil fatty acid;

[0061] The viscosity improver is polyisobutylene;

[0062] The extreme pressure anti-wear agent is a mixture of oleth-2 phosphate and allyl phosphate ammonium salt in a mass ratio of 5:1;

[0063] The oleic acid soap is an isomeric alcohol oleic acid soap, and the carbon chain length of the isomeric alcohol is 7;

[0064] The surfactant is Span 80;

[0065] The rust inhibitor is calcium petroleum sulfonate;

[0066] The preparation method of the carbon steel stamping oil composition is the same as that of Example 1.

[0067] Example 3

[0068] A carbon steel stamping oil composition, wherein the raw materials for its preparation include, by weight: 67 parts of mineral oil, 5 parts of oiliness agent, 10 parts of viscosity improver, 8 parts of extreme pressure anti-wear agent, 5 parts of oleic acid soap, 4.5 parts of surfactant, and 0.5 parts of rust inhibitor;

[0069] Wherein, the mineral oil is 60N;

[0070] The oiliness agent is glycerol monooleate;

[0071] The viscosity improver is polyisobutylene;

[0072] The extreme pressure anti-wear agent is a mixture of fatty alcohol ethoxylated phosphate and propylene glycol phosphite in a mass ratio of 2:1;

[0073] The oleic acid soap is ethylenediamine oleic acid soap;

[0074] The surfactant is fatty alcohol polyoxyethylene ether phosphate;

[0075] The rust inhibitor is zinc naphthenate;

[0076] The preparation method of the carbon steel stamping oil composition is the same as that of Example 1.

[0077] Example 4

[0078] A carbon steel stamping oil composition, which differs from Example 1 in that the mass ratio of polyisobutylene to base oil is 1:4.

[0079] Example 5

[0080] A carbon steel stamping oil composition, which differs from Example 1 in that the mass ratio of polyisobutylene to base oil is 1:11.

[0081] Example 6

[0082] A carbon steel stamping oil composition, which differs from Example 1 in that the mass ratio of isotridecyl phosphate to dialkyl phosphite is 4:1.

[0083] Example 7

[0084] A carbon steel stamping oil composition, which differs from Example 2 in that the carbon chain length of the isomeric alcohol oleic acid soap is 12.

[0085] Comparative Example 1

[0086] A carbon steel stamping oil composition, which differs from Example 1 in that the mass ratio of isotridecyl phosphate to dialkyl phosphite is 1:1.

[0087] Comparative Example 2

[0088] This comparative example is a water-based carbon steel stamping oil and rolling oil available on the market, and its specific model is Fits FTS-701.

[0089] Comparative Example 3

[0090] A carbon steel stamping oil composition, which differs from Example 1 in that the surfactant is polyethylene glycol oleate.

[0091] The various properties of the carbon steel stamping oils of the above embodiments and comparative examples were tested.

[0092] Among them, the lubrication performance test is carried out in accordance with "GB / T 12583-1998 Lubricant Extreme Pressure Performance Determination Method".

[0093] The friction and wear performance test was carried out in accordance with "NB / SH / T 0847-2010 Determination of Friction and Wear Performance of Extreme Pressure Lubricating Oil - SRV Testing Machine Method".

[0094] The wear volume and surface roughness were measured by white light interferometry.

[0095] The operating steps of the cleanliness test method are as follows: evenly apply 2g of carbon steel stamping oil on a 50mm*50mm carbon steel plate and weigh it, then rinse it with water for 30 seconds; dry it at 75℃ and weigh it, and calculate the difference between the two.

[0096] The corresponding test results are as follows:

[0097] Table 1

[0098]

[0099] Table 2

[0100] project M(g) Example 1 1.895 Example 2 1.902 Example 4 1.818 Example 5 1.764 Example 7 1.732 Comparative Example 3 1.745

[0101] In Table 2, M represents the difference in oil removal quality. The larger the difference, the more oil is removed and the better the cleaning performance.

[0102] Combining Table 1 and Table 2, it can be seen that the carbon steel stamping oil compositions provided in Examples 1-4 all have excellent lubrication properties, are easy to clean, and have good stability. The carbon steel stamping oil composition has a small temperature rise in the test, a low friction coefficient, a small wear volume, and a low surface roughness. The carbon steel stamping oil composition provided by the present invention meets the use requirements.

[0103] The ratio of phosphate to phosphite in Comparative Example 1 is smaller than the protection scope of the present invention. Comparison of the test data of Example 1 and Comparative Example 1 shows that the lubricity of the carbon steel stamping oil obtained in Comparative Example 1 is significantly deteriorated, and the wear marks and wear volume are increased.

[0104] Comparative Example 2 is a carbon steel stamping oil composition with good performance on the market, and its lubrication performance is good, which is equivalent to that of Example 3, but not as good as that of Examples 1, 2 and 4. Its cleaning performance is also not as good as that of Examples 1, 2 and 4, indicating that the comprehensive performance of the carbon steel stamping oil composition provided by the present invention is better than that of the prior art.

[0105] The surfactant selected in Comparative Example 3 is not within the dosage range claimed by the present invention. From the test results, its cleaning test results are not as good as those in Example 1, indicating that the selection of surfactant also has an important influence on the carbon steel stamping oil composition.

[0106] Further comparing Example 1 with Example 4, the lubrication performance of Example 4 is comparable to that of Example 1, but its cleanliness is significantly inferior to that of Example 1, reflecting that the mass ratio of polyisobutylene to base oil has an important influence on the cleanliness of the carbon steel stamping oil composition.

[0107] Further comparing Example 1 with Example 5, the lubrication performance of Example 5 is reduced, and the cleanliness is obviously inferior to that of Example 1, reflecting that a too small mass ratio of polyisobutylene to base oil will also have an adverse effect on the lubricity and cleanliness of the carbon steel stamping oil composition.

[0108] Further comparison of Example 1 and Example 6 shows that when the mass ratio of isotridecyl phosphate to dialkyl phosphite increases to 4:1, the lubrication performance of the carbon steel stamping oil composition decreases significantly, which reflects that the lubrication performance of the carbon steel stamping oil composition can be kept optimal only when the mass ratio of isotridecyl phosphate to dialkyl phosphite is within a specific range.

[0109] Compared with Example 2 and Example 7, the carbon chain lengths of isomeric alcohol oleic acid soap are different. From the test results, the lubricity and cleaning performance of Example 7 are both reduced. This indicates that excessive carbon chain length of isomeric alcohol oleic acid soap will reduce the lubricity and cleaning performance of the carbon steel stamping oil composition.

[0110] 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 claims attached to the present invention.

Claims

1. A carbon steel stamping oil composition, characterized in that: The raw materials for its preparation include, by weight: 40-80 parts of base oil, 10-20 parts of oiliness agent, 5-20 parts of viscosity improver, 5-15 parts of extreme pressure anti-wear agent, 2.5-5 parts of surfactant, 3-5 parts of oleic acid soap and 0.2-1 part of rust inhibitor; the extreme pressure anti-wear agent includes: phosphate ester, and phosphite or ammonium salt of phosphate ester; the mass ratio of phosphate ester to phosphite or ammonium salt of phosphate ester is (2-5):1; the surfactant includes at least one of fatty alcohol polyether, Span 80, nonylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether phosphate.

2. The carbon steel stamping oil composition according to claim 1, characterized in that: When the extreme pressure anti-wear agent includes phosphate ester and phosphite, the mass ratio of the phosphate ester to the phosphite is (2-3):

1.

3. The carbon steel stamping oil composition according to claim 1, characterized in that: When the extreme pressure anti-wear agent includes phosphate ester and phosphate ammonium salt; the mass ratio of the phosphate ester to the phosphate ammonium salt is (3.5-5):

1.

4. The carbon steel stamping oil composition according to claim 1, characterized in that: The base oil comprises a narrow cut desulfurized, dearomatized mineral oil.

5. The carbon steel stamping oil composition according to claim 1, characterized in that: The oiliness agent includes at least one of tetraricinoleate, hexaricinoleate, trimethylolpropane oleate, coconut oil fatty acid, glycerol monooleate, and isooctyl stearate.

6. The carbon steel stamping oil composition according to claim 1, characterized in that: The viscosity improver includes at least one of polyisobutylene and polymethacrylate; the mass ratio of the viscosity improver to the base oil is 1:(10-5).

7. The carbon steel stamping oil composition according to claim 1, characterized in that: The oleic acid soap includes at least one of triethanolamine oleic acid soap, isomeric alcohol oleic acid soap, diethanolamine oleic acid soap, ethylenediamine oleic acid soap, and isomeric alcohol oleic acid soap derivatives.

8. The carbon steel stamping oil composition according to claim 7, characterized in that: In the isomeric alcohol oleic acid soap and the isomeric alcohol oleic acid soap derivative, the carbon chain length of the isomeric alcohol is 4 to 8.

9. The carbon steel stamping oil composition according to claim 1, characterized in that: The rust inhibitor comprises at least one of methyl benzotriazole, calcium petroleum sulfonate, zinc cyclohexaneate, benzotriazole derivatives and tribasic acid.

10. A method for preparing stamping oil, characterized in that: The method for preparing the carbon steel stamping oil composition according to any one of claims 1 to 9 comprises the following steps: S100. Mix the base oil, oiliness agent and viscosity improver and stir evenly; S200. Add extreme pressure anti-wear agent and rust inhibitor and stir evenly; S300. Add oleic acid soap and surfactant, stir evenly, and obtain the carbon steel stamping oil composition.

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