Non-chlorine system gear shaving process oil composition and preparation method and application thereof

Abstract

The invention discloses a non-chlorine system gear shaving process oil composition. The raw materials include, by mass, 75% to 85% of mineral base oil, 2% to 10% of anti-wear agent, 2% to 10% of extreme pressure agent, 5% to 10% of oiliness agent, 0.1% to 0.5% of antioxidant, 0.4% to 1% of rust inhibitor, 0.1% to 0.5% of corrosion inhibitor, and 20-50 ppm of anti-foaming agent. The non-chlorine system gear shaving process oil composition has the same excellent lubricating extreme pressure performance as a chlorinated paraffin system without using chlorinated paraffin or other chlorine agents, solves the practical problem of chlorinated paraffin being commonly used in gear shaving process oils, has better lubricity and service life, and improves the processing precision of gear shaving parts.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal processing oils, and in particular relates to a non-chlorine system gear shaving process oil composition, and further relates to a preparation method of the non-chlorine system gear shaving process oil composition and an application of the non-chlorine system gear shaving process oil composition. Background Art

[0002] According to the latest statistics, my country's automotive gear production exceeds 1.5 million sets (total gear production is 300 tons). Assuming that an average of 5g to 10g of shaving oil is removed during the gear shaving process, the annual demand for gear shaving process oils is over 7,000 tons. The intensity and severity of the gear shaving process necessitate extremely high extreme pressure lubrication properties in the process oil; otherwise, it would be difficult to meet the demands of high-intensity cutting and tool protection. Currently, gear shaving process oils both domestically and internationally commonly use chlorinated paraffin, an additive with excellent extreme pressure lubrication properties, to meet these process requirements. These additives, such as MSN 121A from Volkswagen (Germany) and Castrol's Castrolcut 603 from the UK, are often added at dosages exceeding 10% (mass fraction). While chlorinated paraffin has excellent performance, its indegradability and the potential for formation of dioxins, a "toxicant of the century," at high temperatures pose significant environmental risks. With the increasing international awareness of the hazards of chlorinated paraffins and the increasingly stringent environmental protection regulations in China, the use of chlorinated paraffins, especially short-chain (generally with a carbon number of 10 to 13) chlorinated paraffins, has been restricted to a limit of ≤1% (mass fraction). Although long-chain (with a carbon number greater than 13) chlorinated paraffins are not restricted, the harm to the environment still exists and they will inevitably be withdrawn from the formulation system of such process oils.

[0003] Chinese patent publication number CN105802711A, titled "A Metalworking Gear Shaving Oil," discloses a product made from 25# transformer oil, rapeseed oil, dinonylnaphthalene basic barium sulfonate, medium-chain chlorinated paraffin S52, highly active sulfur, synthetic oil, and methyl silicone oil. The product contains chlorinated paraffin and a barium-containing additive banned by the EU. The chlorinated paraffin generates toxic substances from frictional heat during the gear shaving process, posing a serious threat to both the environment and human health. This is the only major disclosure regarding gear shaving oils found.

[0004] Gear picking is the most demanding process among the three gear hobbing, gear shaping and gear picking processes, and it is not easy to achieve without the use of chlorinated paraffin. Summary of the Invention

[0005] The present invention aims to provide a non-chlorine system gear shaving process oil composition, which solves the practical problem that chlorinated paraffin is commonly used in gear shaving process oil, has better lubricity and service life, and improves the gear shaving process quality.

[0006] The second object of the present invention is to provide a method for preparing a non-chlorine system gear shaving process oil composition.

[0007] The third object of the present invention is to provide an application of a non-chlorine system gear shaving process oil composition.

[0008] The technical solution adopted by the present invention is a non-chlorine system gear shaving process oil composition, the raw materials of which include, by mass, 75% to 85% of mineral base oil, 2% to 10% of anti-wear agent, 2% to 10% of extreme pressure agent, 5% to 10% of oiliness agent, 0.1% to 0.5% of antioxidant, 0.4% to 1% of rust inhibitor, 0.1% to 0.5% of corrosion inhibitor, and 20-50ppm of anti-foaming agent.

[0009] The present invention is also characterized in that:

[0010] The mineral base oil is one or a mixture of several of YUBASE6, HVIH2, MVI150, MVI300 and MVI500 in any ratio.

[0011] The anti-wear agent is a mixture of one or more of T104, T106 and T106D in any ratio.

[0012] The extreme pressure agent is a mixture of one or more of nitrogen-containing derivatives of thiophosphoric acid, alkyl molybdenum thiophosphate and sulfurized lard in any ratio.

[0013] The antioxidant is a mixture of one or more of T501, L57, or L115 in any ratio.

[0014] The rust preventive agent is a mixture of one or both of T746 and zinc naphthenate in any ratio.

[0015] The corrosion inhibitor is a mixture of one or more of benzotriazole, benzotriazole derivatives and triazole derivatives in any ratio.

[0016] The antifoaming agent is a mixture of one or more of an organic silicon defoaming agent, an alkyl silicone oil and a polyether silicone oil in any ratio.

[0017] The second technical solution adopted by the present invention is a method for preparing a non-chlorine-based gear shaving process oil composition. Using the raw materials and mass components of the non-chlorine-based gear shaving process oil composition, the method is specifically carried out in the following steps: adding a predetermined amount of mineral base oil, anti-wear agent, extreme pressure agent, oiliness agent, antioxidant, rust inhibitor, and corrosion inhibitor to a stirred kettle; starting stirring and heating the contents to 60-70°C; adding a predetermined amount of anti-foaming agent; and stopping heating. Stirring is continued until the liquid is homogeneous and translucent, and then cooled to room temperature to obtain the non-chlorine-based gear shaving process oil composition.

[0018] The third technical solution adopted by the present invention is the application of the non-chlorine system gear shaving process oil composition in the gear shaving process.

[0019] The beneficial effects of the present invention are:

[0020] The non-chlorine system gear shaving process oil composition of the present invention has the same excellent lubricating extreme pressure performance as the chlorinated paraffin system without using chlorine agents such as chlorinated paraffin, solves the practical problem of the widespread use of chlorinated paraffin in gear picking process oils, has better lubricity and service life, and improves the processing accuracy of gear shaving parts. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to specific embodiments.

[0022] The non-chlorine system gear shaving process oil composition of the present invention comprises the following raw materials by mass:

[0023] Mineral base oil 75% to 85%; if the dosage is less than 75%, the dosage is too low, which will cause unreasonable product viscosity, decreased cleaning performance, and poor dissolution of additives, resulting in turbidity or even precipitation of the oil; if the dosage is greater than 85%, the dosage is too high, which will also cause problems such as unsuitable product viscosity, insufficient lubrication performance, and excessive changes in oil viscosity under high and low temperature conditions, and there are no other benefits.

[0024] The mineral base oil is one or a mixture of several of YUBASE6, HVIH2, MVI150, MVI300 and MVI500 in any ratio.

[0025] Anti-wear agent 2% to 10%; if its dosage is less than 2%, it is too low, which will cause the product to have insufficient anti-wear ability and damage the quality of the gear; if its dosage is greater than 10%, it is too high, which will increase the product cost and have no other benefits.

[0026] The anti-wear agent is a mixture of one or more of T104, T106 and T106D in any ratio.

[0027] Extreme pressure agent 2% to 10%; if its dosage is less than 2%, it is too low, which will cause insufficient lubrication film-forming reaction under high temperature conditions above 500°C; if its dosage is greater than 10%, it is too high, which will cause the appearance of the process oil to deteriorate, and the cost will increase significantly without any other benefits.

[0028] The extreme pressure agent is a mixture of one or more of nitrogen-containing derivatives of thiophosphoric acid, alkyl molybdenum thiophosphate and sulfurized lard in any ratio.

[0029] Oiliness agent 5% to 10%; if its dosage is less than 5%, it is too low, which will cause the product's adsorption and film-forming ability to decrease; if its dosage is greater than 10%, it is too high, which will make the machine tool difficult to clean, and significantly increase product costs without any other benefits.

[0030] The oiliness agent is a mixture of one or more of polyester, pentaerythritol ester and trimethylolpropane fatty acid ester in any ratio.

[0031] Antioxidant 0.1% to 0.5%; if the amount is less than 0.1%, the amount is too low, which will cause insufficient antioxidant function of the product and lead to spoilage; if the amount is greater than 0.3%, the amount is too high, which will increase the cost of the product without any other benefits.

[0032] The antioxidant is a mixture of one or more of T501, L57, or L115 in any ratio.

[0033] The rust inhibitor is 0.4% to 1%. If the dosage is less than 0.4%, the dosage is too low, which will result in insufficient rust prevention and dispersion performance of the product. If the dosage is greater than 1%, the dosage is too high, which will significantly increase the product cost without any other benefits.

[0034] The rust preventive agent is a mixture of one or both of T746 and zinc naphthenate in any ratio.

[0035] The corrosion inhibitor is 0.1% to 0.5%. If the amount is less than 0.1%, the amount is too low and will cause corrosion of the workpiece. If the amount is greater than 0.5%, the amount is too high and will cause a significant increase in product costs without any other benefits.

[0036] The corrosion inhibitor is a mixture of one or more of benzotriazole, benzotriazole derivatives and triazole derivatives in any ratio.

[0037] The antifoaming agent is 20-50ppm. If the dosage is less than 20ppm, the dosage is too low, which will cause the product to foam and overflow the liquid pool; if the dosage is greater than 50ppm, the dosage is too high, which will increase the cost and have no other benefits.

[0038] The antifoaming agent is a mixture of one or more of an organic silicon defoaming agent, an alkyl silicone oil and a polyether silicone oil in any ratio.

[0039] The method for preparing a non-chlorine-based gear shaving process oil composition of the present invention uses the raw materials and mass components of the non-chlorine-based gear shaving process oil composition and is specifically carried out in the following steps: adding a predetermined amount of mineral base oil, anti-wear agent, extreme pressure agent, oiliness agent, antioxidant, rust inhibitor, and corrosion inhibitor to a stirred kettle; starting stirring and heating the contents of the stirred kettle to 60-70° C.; adding a predetermined amount of anti-foaming agent; and stopping heating. Stirring is continued until the liquid is homogeneous and translucent, and then cooled to room temperature to obtain the non-chlorine-based gear shaving process oil composition.

[0040] The chlorine-based gear shaving process oil composition of the present invention is used in a gear shaving process. It does not contain chlorine agents such as chlorinated paraffin, has excellent extreme pressure and lubrication properties, provides protection for cutting tools, and improves the machining accuracy of gear parts.

[0041] Example 1

[0042] The chlorine system gear shaving process oil composition of the present invention is prepared according to the following percentages based on the total mass of the process oil composition:

[0043] The mass percentage of YUBASE6 is 75%

[0044] T104 mass percentage is 5.0%

[0045] The mass percentage of nitrogen-containing derivatives of sulfuric acid is 8.0%

[0046] The mass percentage of polyester is 4.5%

[0047] The mass percentage of pentaerythritol ester is 5.5%

[0048] The mass percentage of antioxidant T501 is 0.5%

[0049] T746 mass percentage is 1.0%

[0050] Benzotriazole derivatives 0.5%

[0051] The mass percentage of alkyl silicone oil is 50ppm.

[0052] A method for preparing a non-chlorine system gear shaving process oil composition comprises the following steps: using the raw materials and mass components of the non-chlorine system gear shaving process oil composition, sequentially adding base oil Yubase6, anti-wear agent T104, nitrogen-containing derivatives of sulfuric acid and phosphoric acid, antioxidant T501, polyester, pentaerythritol ester, rust inhibitor T746, and benzotriazole derivatives into a stirring kettle, heating the mixture to 60-70°C to promote the dissolution of the additives; finally, adding alkyl silicone oil, stopping heating, continuously stirring until the liquid is homogeneous and transparent, and cooling the mixture to room temperature to obtain the non-chlorine system gear shaving process oil composition.

[0053] Example 2

[0054] The chlorine system gear shaving process oil composition of the present invention is prepared according to the following percentages based on the total mass of the process oil composition:

[0055] The mass percentage of base oil HVIH2 is 12%

[0056] The mass percentage of base oil MVI150 is 65%

[0057] The mass percentage of anti-wear agent T106 is 4.0%

[0058] The mass percentage of alkyl molybdenum thiophosphate is 10.0%

[0059] The mass percentage of polyester is 2.0%

[0060] The mass percentage of trimethylolpropane fatty acid ester is 6.0%

[0061] The mass percentage of antioxidant L57 is 0.3%

[0062] The mass percentage of zinc naphthenate is 0.4%

[0063] The mass percentage of benzotriazole is 0.3%

[0064] The mass percentage of polyether silicone oil is 20ppm.

[0065] A preparation method for a non-chlorine system gear shaving process oil composition comprises the following steps: using the raw materials and mass components of the non-chlorine system gear shaving process oil composition, adding base oil HVIH2, MVI150, anti-wear agent T106, alkyl molybdenum thiophosphate, polyester, trimethylolpropane fatty acid ester, antioxidant L57, zinc cyclohexaneate, and benzotriazole into a stirring kettle, and heating to 60-70° C. to promote the dissolution of the additives; finally, adding polyether silicone oil, stopping heating, and continuously stirring until the liquid is uniform and transparent, and cooling to room temperature to obtain the non-chlorine system gear shaving process oil composition.

[0066] Example 3

[0067] The chlorine system gear shaving process oil composition of the present invention is prepared according to the following percentages based on the total mass of the process oil composition:

[0068] The mass percentage of base oil MVI300 is 78%

[0069] The mass percentage of anti-wear agent T106D is 8.0%

[0070] The mass percentage of alkyl molybdenum thiophosphate is 3.0%

[0071] The mass percentage of sulfurized lard is 2.0%

[0072] The mass percentage of polyester is 7.0%

[0073] The mass percentage of antioxidant L115 is 0.5%

[0074] The mass percentage of zinc naphthenate is 0.3%

[0075] T746 mass percentage is 0.5%

[0076] The mass percentage of benzotriazole is 0.2%

[0077] The mass percentage of silicone defoamer is 40ppm

[0078] A preparation method for a non-chlorine system gear shaving process oil composition comprises the following steps: using the raw materials and mass components of the non-chlorine system gear shaving process oil composition: adding mineral base oil MVI300, anti-wear agent T106D, alkyl molybdenum sulfide phosphate, sulfurized lard, polyester, antioxidant L115, zinc cyclohexane, T746, and benzotriazole in a stirred kettle, heating the mixture to 60-70° C. to promote the dissolution of the additives; finally, adding an organosilicon defoaming agent and stirring the mixture, stopping heating, stirring the mixture evenly, and cooling the mixture to room temperature to obtain the non-chlorine system gear shaving process oil composition.

[0079] Example 4

[0080] The chlorine system gear shaving process oil composition of the present invention is prepared according to the following percentages based on the total mass of the process oil composition:

[0081] The mass percentage of base oil MVI300 is 50%

[0082] The mass percentage of base oil MVI150 is 30.5%

[0083] The mass percentage of anti-wear agent T104 is 5.0%

[0084] The mass percentage of anti-wear agent T106 is 5.0%

[0085] The mass percentage of alkyl molybdenum thiophosphate is 1.0%

[0086] The mass percentage of nitrogen-containing derivatives of thiophosphoric acid is 1.0%

[0087] The mass percentage of polyester is 3.0%

[0088] The mass percentage of pentaerythritol ester is 4.0%

[0089] The mass percentage of antioxidant L115 is 0.2%

[0090] The mass percentage of antioxidant T501 is 0.2%

[0091] The mass percentage of zinc naphthenate is 0.5%

[0092] The mass percentage of triazole derivatives is 0.1%

[0093] The mass percentage of alkyl silicone oil is 35ppm

[0094] A preparation method for a non-chlorine system gear shaving process oil composition comprises the following steps: using the raw materials and mass components of the non-chlorine system gear shaving process oil composition, adding base oils MVI300, MVI150, anti-wear agents T104, T106, alkyl molybdenum thiophosphates, nitrogen-containing derivatives of thiophosphates, polyesters, pentaerythritol esters, L115, T501, zinc cyclohexane, and triazole derivatives, an anti-corrosion and rust preventive, into a stirred kettle; heating the kettle to 60-70° C. to promote the dissolution of the additives; finally, adding alkyl silicone oil and stirring the mixture; stopping heating; stirring the liquid until it becomes transparent; and cooling the mixture to room temperature to obtain the non-chlorine system gear shaving process oil composition.

[0095] Example 5

[0096] The chlorine system gear shaving process oil composition of the present invention is prepared according to the following percentages based on the total mass of the process oil composition:

[0097] Mineral base oil MVI300 mass percentage is 60%

[0098] Mineral base oil MVI500 mass percentage is 23%

[0099] The mass percentage of anti-wear agent T106D is 3.0%

[0100] The mass percentage of anti-wear agent T104 is 4.0%

[0101] The mass percentage of sulfurized lard is 1.0%

[0102] The mass percentage of nitrogen-containing derivatives of thiophosphoric acid is 2.0%

[0103] The mass percentage of trimethylolpropane fatty acid ester is 6.0%

[0104] The mass percentage of antioxidant L57 is 0.1%

[0105] The mass percentage of T746 is 0.2%

[0106] The mass percentage of zinc naphthenate is 0.5%

[0107] The mass percentage of benzotriazole is 0.2%

[0108] The mass percentage of polyether silicone oil is 35ppm

[0109] A preparation method for a non-chlorine system gear shaving process oil composition comprises the following steps: using the raw materials and mass components of the non-chlorine system gear shaving process oil composition, adding mineral base oil MVI300, mineral base oil MVI500, anti-wear agent T106D, anti-wear agent T104, sulfurized lard, nitrogen-containing derivatives of sulfur and phosphoric acid, trimethylolpropane fatty acid ester, antioxidants L57 and T746, zinc cyclohexane and benzotriazole into a stirring kettle, heating to 60° C. to promote the dissolution of the additives; finally, adding a polyether silicone oil anti-foaming agent and stirring, stopping heating, stirring evenly, and cooling to room temperature to obtain the non-chlorine system gear shaving process oil composition.

[0110] Example 6

[0111] The chlorine system gear shaving process oil composition of the present invention is prepared according to the following percentages based on the total mass of the process oil composition:

[0112] Mineral base oil MVI500 mass percentage is 85%

[0113] The mass percentage of anti-wear agent T106D is 1%

[0114] The mass percentage of anti-wear agent T106 is 1.0%

[0115] The mass percentage of sulfurized lard is 7.0%

[0116] The mass percentage of polyester is 4.0%

[0117] The mass percentage of trimethylolpropane fatty acid ester is 1.0%

[0118] The mass percentage of antioxidant L115 is 0.2%

[0119] The mass percentage of zinc naphthenate is 0.4%

[0120] The mass percentage of benzotriazole is 0.2%

[0121] The mass percentage of triazole derivatives is 0.2%

[0122] The mass percentage of alkyl silicone oil is 10ppm

[0123] The mass percentage of polyether silicone oil is 20ppm

[0124] A preparation method for a non-chlorine system gear shaving process oil composition comprises the following steps: using the raw materials and mass components of the non-chlorine system gear shaving process oil composition, adding mineral base oil MVI500, anti-wear agent T106D, anti-wear agent T106, sulfurized lard, polyester, trimethylolpropane fatty acid ester, antioxidant L115, zinc cyclohexaneate, benzotriazole, and triazole derivatives into a stirring kettle, heating the mixture to 60-70° C. to promote the dissolution of the additives; finally, adding alkyl silicone oil and polyether silicone oil anti-foaming agent and stirring, stopping heating, stirring evenly, and cooling the mixture to room temperature to obtain the non-chlorine system gear shaving process oil composition.

[0125] Comparative Example

[0126] The inventors purchased a typical imported gear shaving oil currently available on the market and used it in the gear shaving process. They also used the non-chlorine-based gear shaving oil composition of the present invention in the gear shaving process and conducted relevant physical and chemical property tests. The results are shown in Table 1. The main components of the typical imported gear shaving oil currently available on the market are: base oil, chlorinated paraffin, synthetic ester, sulfurized olefin, and a small amount of other additives.

[0127] Table 1

[0128]

[0129] As shown in the test data in Table 1, the chlorine-free gear shaving oil provided by the present invention achieves lubricating extreme pressure performance comparable to that of products formulated with chlorine-containing agents, without the addition of chlorinated paraffin. Other physical and chemical indicators are comparable. Subsequent field trials at a gear factory also fully demonstrated that the present invention meets the requirements of gear shaving processes.

[0130] Through the above method, the present invention discloses a non-chlorine-based gear shaving process oil composition. This product is characterized by the following components in weight percentage: base oil 75% to 85%, antiwear agent 2% to 10%, extreme pressure agent 2% to 10%, oiliness agent 5% to 10%, antioxidant 0.1% to 0.5%, rust inhibitor 0.4% to 1%, corrosion inhibitor 0.1% to 0.5%, and anti-foaming agent 20-50ppm. After adding and blending these raw materials in a certain order and proportion, the non-chlorine-based gear shaving process oil can be obtained. Compared with existing process oils, this invented product does not contain chlorinated paraffin and other chlorine agents, and meets the requirements of the national standard GB / T32812-2016 "Limits and Determination Methods of Hazardous Substances in Metalworking Fluids." At the same time, the product has excellent lubrication, extreme pressure, anti-wear, cleaning, and rust prevention properties, is cost-effective, and uses readily available raw materials and a simple and easy production process.

Claims

1. A non-chlorine-based gear shaving process oil composition, characterized in that: The components by mass include: mineral base oil 75%~85%, anti-wear agent 2%~10%, extreme pressure agent 2%~10%, oiliness agent 5%~10%, antioxidant 0.1%~0.5%, rust inhibitor 0.4%~1%, corrosion inhibitor 0.1%~0.5%, anti-foaming agent 20-50ppm; The anti-wear agent is a mixture of one or more of T104, T106 and T106D in any ratio; The extreme pressure agent is a mixture of one or more of nitrogen-containing derivatives of thiophosphoric acid, alkyl molybdenum thiophosphate and sulfurized lard in any ratio; The rust inhibitor is a mixture of one or both of T746 and zinc naphthenate in any ratio; The oiliness agent is a mixture of one or more of polyester, pentaerythritol ester and trimethylolpropane fatty acid ester in any ratio.

2. The non-chlorine-based gear shaving process oil composition according to claim 1, characterized in that: The mineral base oil is a mixture of one or more of YUBASE6, HVIH2, MVI150, MVI300 and MVI500 in any ratio.

3. The non-chlorine-based gear shaving process oil composition according to claim 1, characterized in that: The antioxidant is one or more of T501, L57, or L115 in any ratio.

4. The non-chlorine-based gear shaving process oil composition according to claim 1, characterized in that: The corrosion inhibitor is a mixture of one or more of benzotriazole, benzotriazole derivatives and triazole derivatives in any ratio.

5. The non-chlorine-based gear shaving process oil composition according to claim 1, characterized in that: The antifoaming agent is a mixture of one or more of an organic silicon defoaming agent, an alkyl silicone oil and a polyether silicone oil in any ratio.

6. A method for preparing a non-chlorine-based gear shaving process oil composition, using the raw materials and mass percentages of the non-chlorine-based gear shaving process oil composition according to claim 1, characterized in that: The method is specifically implemented according to the following steps: adding a predetermined amount of mineral base oil, anti-wear agent, extreme pressure agent, oiliness agent, antioxidant, rust inhibitor, and corrosion inhibitor into a stirring kettle, starting stirring and heating the materials in the stirring kettle to 60-70° C., adding a predetermined amount of anti-foaming agent, stopping heating, continuing stirring until the liquid is uniform and transparent, and cooling to room temperature to obtain a non-chlorine system gear shaving process oil composition.

7. Use of the non-chlorine-based gear shaving process oil composition according to any one of claims 1 to 5 in a gear shaving process.

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