Carbon steel stamping oil composition and method of making same

Abstract

The present application relates to the technical field of lubricant 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 raw materials in parts by weight: 40-80 parts of base oil, 10-20 parts of oil agent, 5-20 parts of viscosity modifier, 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 anti-rust agent. The extreme pressure anti-wear agent comprises phosphate ester, and phosphite ester or ammonium phosphate ester. The mass ratio of the phosphate ester to the phosphite ester or ammonium phosphate ester 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 ester. The carbon steel stamping oil composition has high lubricity, good heat dissipation, and extreme pressure and wear resistance, and can meet the processing requirements of high-strength carbon steel.

Description

TECHNICAL FIELD

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

[0002] The carbon steel stamping oil on the market has many problems in use, for example: for high-strength carbon steel materials, burrs and scratches are easy to produce during stamping, 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, the volatile stamping oil has low viscosity and poor lubricity, and will emit gas during use. The odor of volatile gas is large, which poses a certain threat to the health of workers. Although the water-based stamping oil has no odor problem, its lubricity is still insufficient and cannot meet the harsh processing requirements of high-strength carbon steel stamping. Although the oily stamping oil has good lubricity, it often needs subsequent annealing process to remove the residual oil on the surface, which takes a long time and consumes a large amount of energy, and pollutes the environment.

[0003] It can be seen that the prior art still needs to be improved and improved. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to provide a carbon steel stamping oil composition and a preparation method thereof, aiming to solve the technical problems of insufficient lubricity of the carbon steel stamping oil in the prior art, complicated subsequent processing and low surface quality of the product.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] The present application provides a carbon steel stamping oil composition, the preparation raw materials of which include, in terms of weight fraction: base oil 40-80 parts, oiliness agent 10-20 parts, viscosity improver 5-20 parts, extreme pressure anti-wear agent 5-15 parts, surfactant 2.5-5 parts, oleic acid soap 3-5 parts, and rust inhibitor 0.2-1 part; the extreme pressure anti-wear agent includes phosphate ester, and phosphite ester or phosphate ester ammonium salt; the mass ratio of the phosphate ester to the phosphite ester or phosphate ester 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 when 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 when the extreme pressure anti-wear agent includes phosphate ester and phosphate ester ammonium salt; the mass ratio of the phosphate ester to the phosphate ester ammonium salt is (3.5-5):1.

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

[0010] The carbon steel stamping oil composition, wherein the oiliness agent comprises at least one of tetra-ricinoleate, hexa-ricinoleate, trimethylolpropane ricinoleate, coconut oil fatty acid, glycerol monooleate, isooctyl stearate.

[0011] The carbon steel stamping oil composition, wherein the viscosity modifier comprises at least one of polyisobutylene, polymethacrylate; the mass ratio of the viscosity modifier 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, isomeric alcohol oleic acid soap derivative.

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

[0014] The carbon steel stamping oil composition, wherein the rust inhibitor comprises at least one of methyl benzene triazole, calcium petroleum sulfonate, zinc naphthenate, benzotriazole derivative, tribasic acid.

[0015] The second aspect of the present application provides a preparation method of the stamping oil, which is used for preparing the carbon steel stamping oil composition as described above, and comprises the following steps:

[0016] S100. mixing the base oil, the oiliness agent and the viscosity modifier, and stirring uniformly;

[0017] S200. adding the extreme pressure anti-wear agent and the rust inhibitor, and stirring uniformly;

[0018] S300. adding the oleic acid soap and the surfactant, stirring uniformly, and obtaining the carbon steel stamping oil composition.

[0019] Beneficial effects: the first aspect of the present application provides a carbon steel stamping oil composition, which has high lubricity, good heat dissipation and extreme pressure and wear resistance by collocation of components such as base oil, oiliness agent, viscosity modifier, extreme pressure anti-wear agent and oleic acid soap, 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 needed, the waste liquid after cleaning is easy to handle in the later period, is safe and environmentally friendly, and has no harm to the human body.

[0020] The second aspect of the present application provides a preparation method of stamping oil, which is used for preparing the carbon steel stamping oil composition as described above. DETAILED DESCRIPTION

[0021] The present application provides a carbon steel stamping oil composition and a preparation method thereof. To make the purpose, technical scheme and effects of the present application clearer and more explicit, the present application is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0022] The present application provides a carbon steel stamping oil composition, which is prepared from the following raw materials in parts by weight: 40-80 parts of base oil, 10-20 parts of oiliness agent, 5-20 parts of viscosity modifier, 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 comprises phosphate ester, and phosphite ester or ammonium phosphate ester. The mass ratio of the phosphate ester to the phosphite ester or ammonium phosphate ester 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 ester.

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

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

[0025] After stamping processing, there is also a rinsing process. By matching specific proportions and types of phosphorus-based extreme pressure agents, the surface residue can be reduced, and part of the phosphate ester has a rust-proof function, which can better protect the carbon steel.

[0026] Preferably, the phosphate ester can be at least one of isopropylated trioleate, oleyl polyether-2 phosphate ester, and fatty alcohol ethoxylated phosphate ester. The phosphite ester can be at least one of dialkyl phosphite ester and propylene glycol phosphite ester. The ammonium phosphate ester can be allyl phosphate ester ammonium salt.

[0027] Preferably, when the extreme pressure anti-wear agent comprises phosphates and phosphites; the mass ratio of the phosphates and phosphites is (2-3): 1.

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

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

[0030] Preferably, the base oil comprises narrow fraction desulfurized and de-aromatized mineral oil. In the present application, the base oil has the highest content in the formula, and plays a crucial role in the lubricity of the whole system and the quality of the product surface. The narrow fraction desulfurized and de-aromatized mineral oil has no corrosion to the surface of carbon steel material, and the finished product has high brightness. At the same time, the narrow fraction de-aromatized mineral oil is non-toxic and odorless. The risk of contact for workers on site is low, and it will not pose a threat to physical health. Specifically, the base oil comprises at least one of 150SN, 100N, 60N.

[0031] Preferably, the oil agent comprises at least one of tetramer ricinoleate, hexamer ricinoleate, trimethylolpropane oleate, coconut oil fatty acid, glycerol monooleate, isooctyl stearate.

[0032] Preferably, the viscosity modifier comprises at least one of polyisobutylene, polymethyl acrylate. The above two viscosity modifiers can well improve the viscosity, enhance the strength of oil film and improve the lubricity, better meet the processing needs of high-strength carbon steel. In addition, by controlling the amount of oleic acid soap and surfactant, the viscosity modifier can be easily washed and will not be left on the surface of the product, improving the surface quality.

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

[0034] Preferably, 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, isomeric alcohol oleic acid soap derivative. The use of oleic acid soap can make the whole system easier to wash and reduce the use of surfactant. Too much surfactant will compete for adsorption on the surface of carbon steel and the components that play a lubricating role, resulting in poor lubricity. The above oleic acid soap can improve the lubricity and emulsifiability of the carbon steel stamping oil composition system, and is easy to clean after processing.

[0035] Preferably, the isomeric alcohol oleic acid soap or isomeric alcohol oleic acid soap derivative has a carbon chain length of 4-8. The isomeric alcohol oleic acid soap in this range has both good lubricity and excellent cleaning performance in the formula system of the present application.

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

[0037] Preferably, the rust inhibitor includes at least one of methyl benzene triazole, calcium petroleum sulfonate, zinc naphthenate, benzotriazole derivative, and tribasic acid.

[0038] The second aspect of the present application 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. Mixing the base oil, oiliness agent, and viscosity modifier, and stirring until uniform;

[0040] S200. Adding the extreme pressure anti-wear agent and rust inhibitor, and stirring until uniform;

[0041] S300. Adding the oleic acid soap and surfactant, and stirring until uniform to 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 application is further illustrated by the following specific examples and comparative examples.

[0044] Example 1

[0045] A carbon steel stamping oil composition, prepared from the following raw materials in parts by weight: base oil 61.5 parts, oiliness agent 15 parts, viscosity modifier 10 parts, extreme pressure anti-wear agent 5 parts, oleic acid soap 5 parts, surfactant 3 parts, and rust inhibitor 0.5 parts;

[0046] The base oil is 150SN.

[0047] The oiliness agent is tetrapolymerized ricinoleic acid ester.

[0048] The viscosity modifier is polyisobutylene.

[0049] The extreme pressure anti-wear agent is a mixture of isopropyl trioleate and dialkyl phosphite in a mass ratio of 2:1.

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

[0051] The surfactant is dodecyl phenol polyoxyethylene ether.

[0052] The rust preventive agent is a benzotriazole derivative;

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

[0054] A001. The base oil, oil agent and viscosity modifier are mixed, and uniform stirring is maintained at a temperature of 50-60°C;

[0055] A002. The extreme pressure anti-wear agent and oleic acid soap are added, and uniform stirring is maintained at a temperature of 50-60°C;

[0056] A003. The rust preventive agent and surfactant are added, and uniform stirring is maintained at room temperature to obtain the carbon steel stamping oil composition.

[0057] Example 2

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

[0059] Among them, the mineral oil is 100N;

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

[0061] The viscosity modifier is polyisobutylene;

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

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

[0064] The surfactant is Span 80;

[0065] The rust preventive agent 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, by weight, the preparation raw materials include: mineral oil 67 parts, oil agent 5 parts, viscosity modifier 10 parts, extreme pressure anti-wear agent 8 parts, oleic acid soap 5 parts, surfactant 4.5 parts, rust preventive agent 0.5 parts;

[0069] Among them, the mineral oil is 60N;

[0070] The oil agent is glycerol monooleate;

[0071] The viscosity modifier is polyisobutylene;

[0072] The extreme pressure anti-wear agent is a mixture of fatty alcohol ethoxylated phosphate ester and propylene glycol phosphite ester 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 ester;

[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 is different 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 is different 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 is different from Example 1 in that the mass ratio of isotrioleyl phosphate ester and dialkyl phosphite ester is 4:1.

[0083] Example 7

[0084] A carbon steel stamping oil composition, which is different 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 is different from Example 1 in that the mass ratio of isotrioleyl phosphate ester and dialkyl phosphite ester is 1:1.

[0087] Comparative Example 2

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

[0089] Comparative Example 3

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

[0091] The performances of the carbon steel stamping oils of the above examples and comparative examples are tested.

[0092] The lubricating property test refers to GB / T 12583-1998 Lubricants-Determination of extreme pressure properties.

[0093] The friction and wear property test refers to NB / SH / T 0847-2010 Determination of friction and wear properties of extreme pressure lubricating oil-SRV test machine method.

[0094] The wear volume and surface roughness are measured by a white light interferometer.

[0095] The operation steps of the cleaning property test method are as follows: 2 g of the carbon steel stamping oil is evenly applied on a 50 mm*50 mm carbon steel plate, weighed, washed with water for 30 seconds, dried at 75 DEG C, and weighed, and the difference is calculated.

[0096] The corresponding test results are as follows:

[0097] Table 1

[0098]

[0099] Table 2

[0100] Item 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 mass, and the greater the difference, the more oil is removed, and the better the cleaning property.

[0102] It can be known from Table 1 and Table 2 that the carbon steel stamping oil compositions provided in Examples 1-4 all have excellent lubricating properties, are easy to clean, and have good stability. The carbon steel stamping compositions have a small temperature rise, a low friction coefficient, a small wear volume, and a low surface roughness in the test, and the carbon steel stamping oil composition provided in the application meets the use requirements.

[0103] The proportion of the phosphates and the phosphites in Comparative Example 1 is less than the protection scope of the application, and it can be known from the test data of Examples 1 and Comparative Example 1 that the lubricating property of the carbon steel stamping oil obtained in Comparative Example 1 is obviously poor, and the wear scar and the wear volume are large.

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

[0105] The surfactant in Comparative Example 3 is not selected within the dosage range claimed in the application, and from the test results, the cleaning property test result is not as good as Example 1, indicating that the selection of the surfactant also has an important influence on the carbon steel stamping oil composition.

[0106] Further comparing Example 1 and Example 4, the lubricating property of Example 4 is equivalent to that of Example 1, but the cleanliness of Example 4 is obviously worse than that of Example 1, reflecting that the mass ratio of polyisobutylene to base oil has a significant impact on the cleanliness of the carbon steel stamping oil composition.

[0107] Further comparing Example 1 and Example 5, the lubricating property of Example 5 is decreased, and the cleanliness of Example 5 is obviously worse than that of Example 1, reflecting that the mass ratio of polyisobutylene to base oil being too small also has an adverse impact on the lubricating property and the cleanliness of the carbon steel stamping oil composition.

[0108] Further comparing Example 1 and Example 6, it is found that when the mass ratio of isotrioleyl phosphate and dialkyl phosphite is increased to 4:1, the lubricating property of the carbon steel stamping oil composition is obviously decreased. It is reflected that the mass ratio of isotrioleyl phosphate and dialkyl phosphite should be within a certain range to keep the lubricating property of the carbon steel stamping oil composition optimal.

[0109] Comparing Example 2 and Example 7, the carbon chain length of the isomeric alcohol oil acid soap is different. From the test results, the lubricating property and the cleanliness of Example 7 are both decreased. It is shown that the carbon chain length of the isomeric alcohol oil acid soap being too long will decrease the lubricating property and the cleanliness of the carbon steel stamping oil composition.

[0110] It can be understood that, for those skilled in the art, equivalent replacements or changes can be made according to the technical solutions and the inventive concept of the present application, and all these changes or replacements shall belong to the protection scope of the claims of the present application.

Claims

1. A carbon steel stamping oil composition, characterized in that: The raw materials for its preparation are, 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 surfactant is fatty alcohol polyether, Span 80, nonylphenol polyoxyethylene ether or fatty alcohol polyoxyethylene ether phosphate; The extreme pressure anti-wear agent is composed of a phosphate ester and a phosphite ester, and the mass ratio of the phosphate ester to the phosphite ester is (2-3):1, or the extreme pressure anti-wear agent is composed of a phosphate ester and a phosphate ammonium salt, and the mass ratio of the phosphate ester to the phosphate ammonium salt is (3.5-5):1; The phosphate ester is isotrichol phosphate, oleth-2 phosphate or fatty alcohol ethoxylated phosphate; the phosphite is dialkyl phosphite or propylene glycol phosphite; the phosphate ammonium salt is allyl phosphate ammonium salt; The oleic acid soap is triethanolamine oleic acid soap, isomeric alcohol oleic acid soap, diethanolamine oleic acid soap, ethylenediamine oleic acid soap or an isomeric alcohol oleic acid soap derivative; 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; The base oil is 150SN, 100N or 60N.

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

3. 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:(5-10).

4. The carbon steel stamping oil composition according to claim 1, characterized in that The rust preventive agent comprises at least one of methyl benzotriazole, calcium petroleum sulfonate, zinc cyclohexane, benzotriazole derivatives, and tribasic acid.

5. A method for preparing a carbon steel stamping oil composition, characterized in that: The method for preparing the carbon steel stamping oil composition according to any one of claims 1 to 4 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 a surfactant, and stir evenly to obtain the carbon steel stamping oil composition.

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