A galvanized steel sheet rolling oil and a preparation method thereof

Abstract

The application belongs to the technical field of rolling oil and specifically discloses a galvanized steel plate rolling oil and a preparation method thereof, the galvanized steel plate rolling oil comprises, in percentage by mass, base oil 80-90%, penetrating agent 1-10%, extreme pressure lubricant 1-10%, fluorine-containing additive 0.1-10% and antioxidant 0.1-1%, wherein the base oil is composed of No. 46 white oil and No. 80 white oil in a mass ratio of (45-55):(35-45). The application adopts all raw materials which have no corrosive effect on the galvanized steel plate, and through selection of specific components and specific proportioning, a high-speed rolling oil for the galvanized steel plate is prepared, which is free of sulfur, phosphorus and chlorine, has high lubricity, high extreme pressure and abrasion resistance, good volatile cooling, less residue and no corrosion.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rolling oil, and particularly relates to a galvanized steel plate rolling oil and a preparation method thereof. BACKGROUND

[0002] As an important metal composite material, the galvanized steel plate has played an irreplaceable role in many fields since its birth due to its unique performance advantages. The base material of the galvanized steel plate is usually a cold-rolled steel plate or a hot-rolled steel plate, and the galvanized layer is mostly combined with the steel plate by a hot-dip galvanizing or electroplating zinc process to form a dense protective layer.

[0003] Rolling is a core process of metal processing, which involves the process of gradually thinning and changing the shape of a metal plate or other plastic materials by using one or more pairs of rotating rollers.

[0004] The volatile high-speed rolling oil for the galvanized steel plate introduced in the public data is less, and most of the stamping oils are used as substitutes. However, the stamping oils have the following problems, which make it difficult to use them for actual high-speed rolling processing of the galvanized steel plate: 1. Insufficient extreme pressure and wear resistance: high-speed rolling requires fast processing speed and fast deformation, and insufficient extreme pressure and wear resistance can easily cause defects on the surface of the galvanized steel plate, damage to the plated layer, distortion of the processed parts and other problems; 2. Insufficient cooling: the accumulation of friction heat caused by high-speed processing can cause the surface of the workpiece to harden, affecting the material properties; 3. Cannot simultaneously consider extreme pressure, lubricity, cooling and corrosion resistance: the processing liquid introduced in the public data cannot simultaneously ensure the properties of extreme pressure, lubricity, cooling and corrosion resistance. The strong extreme pressure lubricant containing sulfur, phosphorus and chlorine has good lubricating effect, but has high action temperature, low volatility, high residue and corrosion to the plated layer or paint surface. In the processing process, it can cause wear and corrosion to the processed material and the grinding tool. Therefore, it cannot be used for a long time in actual processing, and cannot effectively ensure a high yield.

[0005] Therefore, it is necessary to consider the characteristics of the galvanized steel plate and the characteristics of the processing process for development, and to provide a galvanized steel plate rolling oil according to the specific circumstances.

[0006] APPLICATION CONTENT

[0007] The purpose of the present application is to solve the problems of the prior art, and to provide a galvanized steel plate rolling oil and a preparation method thereof. The following technical solutions are specifically adopted:

[0008] On the one hand, the present application provides a galvanized steel plate rolling oil, which comprises, by mass percentage: 80-90% of base oil, 1-10% of penetrating agent, 1-10% of extreme pressure lubricant, 0.1-10% of fluorine-containing additive and 0.1-1% of antioxidant; wherein the base oil is composed of 46# white oil and 80# white oil in a mass ratio of (45-55):(35-45).

[0009] In the present application, the base oil as the base component of the galvanized steel plate rolling oil not only is the carrier of other components, but also has multiple functions such as cooling, lubrication and sealing; generally, one or more of n-alkanes and isomeric alkanes are combined. In the present application, specific No. 46 white oil and No. 80 white oil are combined to ensure stable performance due to the need to meet the requirements of the specific rolling process.

[0010] In the present application, the penetrant can make the galvanized steel plate rolling oil fully penetrate into the tiny gaps of the metal while fully cleaning the oil stains and impurities on the metal surface, thereby improving the lubricating effect of the galvanized steel plate rolling oil, reducing friction and wear; at the same time, effectively removing metal chips and other non-metallic pollutants generated during the processing process, further improving the cleanliness of the processing area, thereby prolonging the service life of the mold and equipment.

[0011] Therefore, in order to improve the specific performance requirements of the galvanized steel plate rolling oil provided by the present application, a specific amount of a specific penetrant is required. In the present application, the penetrant includes at least one of isomeric alcohols, fatty alcohol polyoxyethylene ethers, alkyl phenol polyoxyethylene ethers and sodium alkyl sulfonates. In some specific preferred embodiments, the penetrant selected by the present application is at least one of isomeric tridecanol, decyl tetradecanol and isohexadecanol.

[0012] In the present application, the galvanized steel plate rolling oil often needs to face high pressing force during processing, at which time its anti-heavy load performance needs to be appropriately improved. The extreme pressure lubricant can form an extreme pressure lubricating film on the surface of the friction pair under the boundary lubrication condition of high temperature and high pressure, thereby improving the anti-heavy load performance required by the galvanized steel plate rolling oil. Therefore, the galvanized steel plate rolling oil provided by the present application selects an extreme pressure lubricant that can chemically react with active elements on the metal surface to generate metal soap compounds. These specific metal soap compounds have low shear strength and excellent anti-wear performance, which can meet the performance requirements of the galvanized steel plate rolling oil provided by the present application for reducing the friction coefficient and reducing the wear rate.

[0013] Therefore, the extreme pressure lubricant added to the galvanized steel plate rolling oil provided by the present application includes at least one of polymethyl acrylate, synthetic fat and p-benzenedicarboxylic acid triester. In some preferred embodiments, the extreme pressure lubricant is at least one of Priolube 1963 and p-benzenedicarboxylic acid triester.

[0014] In the present application, in order to avoid the problem of oxidation of the galvanized steel plate rolling oil in actual use, avoid the corrosion and oxidation of the metal surface, prevent the failure of the anti-friction additive which is not resistant to corrosion in the processing process, therefore, in order to resist the corrosion of corrosive substances, protect the metal surface, prevent the corrosion and oxidation, the present application adds a specific content of specific fluorine-containing additive to form a molecular arrangement structure which is not connected to each other on the metal surface, thereby resisting the corrosion of various corrosive substances while providing excellent lubricating performance, which can significantly reduce the friction coefficient.

[0015] Therefore, the fluorine-containing additive added in the galvanized steel plate rolling oil provided by the present application includes at least one of fluorine-containing non-ionic polymer, fluorine-containing anionic polymer and perfluoropolyether, and in some preferred embodiments, the fluorine-containing additive is polyhexafluoropropylene oxide.

[0016] In the present application, in order to further inhibit the oxidative degradation of the galvanized steel plate rolling oil, maintain the stability of the oil product, prevent the performance of the galvanized steel plate rolling oil from being reduced due to oxidation, and prolong the service life of the oil product, it is necessary to add some antioxidants appropriately to achieve the above effects. The automatic oxidation of oil and fat generally includes three stages of chain initiation, chain extension and chain termination. The antioxidant can achieve the effect of inhibiting the oxidation of oil and fat by blocking or inhibiting a certain stage in the process of oil and fat oxidation.

[0017] Therefore, the antioxidant added in the galvanized steel plate rolling oil provided by the present application is at least one of phenolic antioxidant and chelated metal ion antioxidant, and in some preferred embodiments, the antioxidant is 2,6-di-tert-butyl-p-cresol. 2,6-di-tert-butyl-p-cresol can provide hydrogen atoms to lipid radicals as a hydrogen donor, so that the radicals are converted into inactive or inert radicals, thereby delaying or interfering with the chain growth stage in the radical chain reaction, and blocking the progress of the oxidation reaction. The preferred antioxidant can meet the above oxidation agent requirement.

[0018] The present application also provides a specific preferred scheme of the above-mentioned galvanized steel plate rolling oil, and the specific composition includes, by mass percentage: 50% of No. 46 white oil, 40% of No. 80 white oil, 5% of decyl tetradecyl alcohol or isomeric hexadecanol, 4% of trimellitic acid triester, 0.5% of polyhexafluoropropylene oxide, and 0.5% of 2,6-di-tert-butyl-p-cresol.

[0019] On the other hand, the present application also provides a preparation method of the above-mentioned galvanized steel plate rolling oil, which includes the following steps:

[0020] The temperature is kept at 55-60℃, the base oil, the penetrating agent and the extreme pressure lubricant are mixed uniformly, then the fluorine-containing additive is added, and after being mixed uniformly, the temperature is lowered to room temperature, the antioxidant is added, and after being mixed uniformly, the galvanized steel plate rolling oil is obtained.

[0021] The beneficial effects of the present application are:

[0022] The galvanized steel plate rolling oil provided by the present application selects specific components and performs specific proportioning, has no corrosion effect on the galvanized steel plate, has a continuous homogeneous high-performance fluorine-containing lubricating film, ensures excellent lubricating performance, and at the same time, the specific components and the specific proportioning of the base oil selected have good volatility, thereby reducing the residue while ensuring good volatile cooling, solving the problem of excessive heat accumulation in the high-speed rolling process of the galvanized steel plate, and providing a high-speed rolling oil for galvanized steel plate without sulfur, phosphorus and chlorine, with high lubricity, high extreme pressure and wear resistance, good volatile cooling, less residue and no corrosion. DETAILED DESCRIPTION

[0023] The concept and technical effects of the present application will be described below in combination with examples for a clear and complete description, so as to fully understand the purpose, scheme and effect of the present application. It should be noted that the examples in the present application and the features in the examples can be combined with each other without conflict.

[0024] Before the present application is described in detail with respect to the specific examples of the galvanized steel plate rolling oil provided, first, the sources of some raw materials used in the examples of the present application are described:

[0025] 46# white oil: Zhonghai Nannian 80# industrial grade white oil;

[0026] 80# white oil: Zhonghai Nannian 46# industrial grade white oil;

[0027] Isomeric tridecanol: Guangzhou Yuyu New Material Co., Ltd.;

[0028] Decyl tetradecanol: Guangzhou Jinshengji Chemical Co., Ltd.;

[0029] Isomeric hexadecanol: Guangzhou Jinbaolai Biological Technology Co., Ltd.;

[0030] Synthetic fat Priolube 1963: Dongguan Hongli Chemical Technology Co., Ltd.;

[0031] Trimellitic acid triester: Guangzhou Meishi Chemical Co., Ltd.;

[0032] Polyhexafluoropropylene oxide: Shanghai Huafu Tai Chemical Co., Ltd.;

[0033] 2,6-Di-tert-butyl-p-cresol: Zhengzhou Kangyuan Chemical Products Co., Ltd.

[0034] Example 1

[0035] Firstly, the embodiment provides a galvanized steel plate rolling oil, which comprises, in percentage by mass: base oil 90%, penetrant 5%, extreme pressure lubricant 4%, fluorine-containing additive 0.5%, and antioxidant 0.5%; wherein the base oil is composed of No. 46 white oil and No. 80 white oil in a mass ratio of 50:40, the penetrant is decyl tetradecanol, the extreme pressure lubricant is tribenzoate, the fluorine-containing additive is polyhexafluoropropylene oxide, and the antioxidant is 2,6-di-tert-butyl-p-cresol.

[0036] Secondly, the embodiment provides a specific preparation method of the galvanized steel plate rolling oil:

[0037] 50% of No. 46 white oil and 40% of No. 80 white oil are mixed as base oil in percentage by mass, then 5% of decyl tetradecanol is added as penetrant, 4% of tribenzoate is added as extreme pressure lubricant, and the three are mixed and stirred at 60°C until the solution is clear and transparent;

[0038] Then, 0.5% of polyhexafluoropropylene oxide is added as fluorine-containing additive, and the stirring is continued at 60°C for 20 minutes, and then the solution is ultrasonically mixed for 20 minutes;

[0039] The mixed solution after ultrasonic mixing is cooled to room temperature, 0.5% of 2,6-di-tert-butyl-p-cresol is added as antioxidant, and the stirring is continued for 20 minutes.

[0040] Embodiment 2

[0041] Firstly, the embodiment provides a galvanized steel plate rolling oil, which comprises, in percentage by mass: base oil 90%, penetrant 5%, extreme pressure lubricant 4%, fluorine-containing additive 0.5%, and antioxidant 0.5%; wherein the base oil is composed of No. 46 white oil and No. 80 white oil in a mass ratio of 50:40, the penetrant is isohexadecanol, the extreme pressure lubricant is tribenzoate, the fluorine-containing additive is polyhexafluoropropylene oxide, and the antioxidant is 2,6-di-tert-butyl-p-cresol.

[0042] Secondly, the embodiment provides a specific preparation method of the galvanized steel plate rolling oil:

[0043] 50% of No. 46 white oil and 40% of No. 80 white oil are mixed as base oil in percentage by mass, then 5% of isohexadecanol is added as penetrant, 4% of tribenzoate is added as extreme pressure lubricant, and the three are mixed and stirred at 60°C until the solution is clear and transparent;

[0044] Then, 0.5% of polyhexafluoropropylene oxide is added as fluorine-containing additive, and the stirring is continued at 60°C for 20 minutes, and then the solution is ultrasonically mixed for 20 minutes;

[0045] The mixed solution after ultrasonic mixing is cooled to room temperature, 0.5% of 2, 6-di-tert-butyl-p-cresol is added as an antioxidant, and stirred for 20 minutes.

[0046] Example 3

[0047] Firstly, the example provides a galvanized steel plate rolling oil, comprising, in mass percentage: base oil 90%, penetrant 5%, extreme pressure lubricant 4%, fluorine-containing additive 0.5%, antioxidant 0.5%; wherein the base oil is composed of No. 46 white oil and No. 80 white oil in a mass ratio of 50:40, the penetrant is isohexadecanol, the extreme pressure lubricant is 2% of Priolube 1963 and 2% of partial benzene acid triester, the fluorine-containing additive is polyhexafluoropropylene oxide, and the antioxidant is 2, 6-di-tert-butyl-p-cresol.

[0048] Secondly, the specific preparation method of the galvanized steel plate rolling oil provided by the example is:

[0049] 50% of No. 46 white oil and 40% of No. 80 white oil are mixed as base oil in mass percentage, then 5% of isohexadecanol is added as penetrant, 2% of Priolube 1963 and 2% of partial benzene acid triester are added as extreme pressure lubricant, and the three are mixed and stirred at 60°C until the solution is clear and transparent;

[0050] Then 0.5% of polyhexafluoropropylene oxide is added as a fluorine-containing additive, and stirring is continued at 60°C for 20 minutes, and then ultrasonic mixing is performed for 20 minutes;

[0051] The mixed solution after ultrasonic mixing is cooled to room temperature, 0.5% of 2, 6-di-tert-butyl-p-cresol is added as an antioxidant, and stirred for 20 minutes.

[0052] Example 4

[0053] Firstly, the example provides a galvanized steel plate rolling oil, comprising, in mass percentage: base oil 90%, penetrant 5%, extreme pressure lubricant 4%, fluorine-containing additive 0.5%, antioxidant 0.5%; wherein the base oil is composed of No. 46 white oil and No. 80 white oil in a mass ratio of 50:40, the penetrant is isohexadecanol, the extreme pressure lubricant is Priolube 1963, the fluorine-containing additive is polyhexafluoropropylene oxide, and the antioxidant is 2, 6-di-tert-butyl-p-cresol.

[0054] Secondly, the specific preparation method of the galvanized steel plate rolling oil provided by the example is:

[0055] Mix 50% of No. 46 white oil and 40% of No. 80 white oil as base oil in mass percentage, then mix 5% of isohexadecanol as penetrant, 4% of Priolube 1963 as extreme pressure lubricant, mix the three, stir at 60°C until the solution is clear and transparent;

[0056] Then add 0.5% of polyhexafluoropropylene oxide as fluorine-containing additive, keep 60°C and continue stirring for 20 minutes, then mix it by ultrasonic for 20 minutes;

[0057] Cool the mixed solution after ultrasonic mixing to room temperature, add 0.5% of 2, 6-di-tert-butyl-p-cresol as antioxidant, stir for 20 minutes.

[0058] Performance test

[0059] Take the roll oil of the galvanized steel sheet of each of the above examples as a test sample, and test the test sample for the following performance tests:

[0060] (1) According to the relevant test method in “GB / T 6144-2010 Synthetic Cutting Fluid”, test the appearance of each test sample, and the results are shown in Table 1.

[0061] Table 1

[0062] Sample Example 1 Example 2 Example 3 Example 4 Solution state Clear and transparent Clear and transparent Clear and transparent Clear and transparent

[0063] The liquid mixture of Examples 1-4 is uniform and clear and transparent, meeting the corresponding requirements.

[0064] (2) According to the relevant test method in “GB / T 30515-2014 Determination of Kinematic Viscosity of Transparent and Opaque Liquid Petroleum Products - Calculation of Dynamic Viscosity”, test the viscosity of each test sample, and the results are shown in Table 2.

[0065] Table 2

[0066] Sample Example 1 Example 5 Example 3 Example 4 40 °C viscosity (mm 2 / S) 1.35 1.39 1.42 1.45

[0067] (3) According to the relevant test method in “GB / T 6144-2010 Synthetic Cutting Fluid”, use galvanized steel sheet to test the corrosion of each test sample, and the results are shown in Table 3.

[0068] Table 3

[0069] Sample Example 1 Example 2 Example 3 Example 4 Corrosion rating Pass Pass Pass Pass

[0070] (4) According to “GB / T 3142-2019 Determination of Lubricant Load-Carrying Capacity - Four-Ball Method”, use the four-ball friction tester MS-10A of Xiamen Tianji Automation Co., Ltd. to test the extreme pressure performance of each test sample, and the results are shown in Table 4.

[0071] Table 4

[0072] Sample Example 1 Example 2 Example 3 Example 4 PB (kg) 38 42 46 50

[0073] (5) The tapping torque test was performed on each test sample using TAP TTT System-G8, and the specific test conditions were as follows: extrusion speed 1500 r / min, depth 20 mm, maximum torque 400 Ncm, tool: TTT T-M4F-TINT 3.642 mm; 7075 aluminum: TTT-System 3.4365-M4F / 3.7 20 mm. The results are shown in Table 5.

[0074] Table 5

[0075] Sample Example 1 Example 2 Example 3 Example 4 Average torque (N cm) 196.53 192.17 189.86 184.22

[0076] (6) Volatility test, the specific method was as follows: 100 g / dm 2 of the test sample was dropped on a glass dish with a diameter of 90 mm, and the weight of the original liquid was recorded 1, the remaining weight of the original liquid after drying at 90°C for 4 min was recorded 2, and the weight loss was calculated 3. The specific results are shown in Table 6.

[0077]

[0078] The volatility rate was calculated, and the surface state of the glass dish after the volatility test was recorded. The specific results are shown in Table 6.

[0079] Table 6

[0080]

[0081]

[0082] As can be seen from performance test 6, the volatility rates of examples 1-4 all exceeded 95%, among which the performance of example 1 was the best, and the volatility rate reached 99%; there was only a slight liquid mark after volatility of example 1 and example 2, and there was a significant liquid mark after volatility of example 3 and example 4, indicating that the rolling oil residue of the galvanized steel plate of example 1 and example 2 was low, and the performance was excellent.

[0083] As can be seen from performance tests 1-6, the tapping torque temperature rise increased with the increase of viscosity, indicating that the viscosity of the oil product needed to be controlled to ensure good cooling during the processing process; as can be seen from the average torque and PB of the tapping torque, the lubrication of hexadecanol and Priolu be 1963 was better, but since better lubrication corresponded to a thicker lubricating film thickness, the volatility rate decreased accordingly. Each raw material did not have corrosion phenomenon on the galvanized steel plate.

[0084] While the application has been described in connection with very specific embodiments, it will be understood that the application is not limited to any of these details or embodiments or any special embodiment, but intends to cover all alternatives, modifications and equivalents as can be included within the scope of the application as defined by the following claims when interpreted in accordance with the principles of patent law. Furthermore, the above description is intended to provide a description of the application and is not intended to provide a complete description of the prior art.

Claims

1. A galvanized steel sheet rolling oil characterized by, According to the mass percentage, it comprises: base oil 80%-90%, penetrant 1%-10%, extreme pressure lubricant 1%-10%, fluorine-containing additive 0.1%-10%, antioxidant 0.1%-1%; wherein, the base oil is composed of No. 46 white oil and No. 80 white oil according to the mass ratio of (45-55):(35-45); The penetrant is at least one of isomeric tridecanol, decyl tetradecanol and isomeric hexadecanol. The extreme pressure lubricant is at least one of Priolube 1963 and triester of p-benzenedicarboxylic acid.

2. The galvanized steel sheet rolling oil according to claim 1, characterized by, The penetrant comprises at least one of isomeric alcohol, fatty alcohol polyoxyethylene ether, alkyl phenol polyoxyethylene ether and sodium alkyl sulfonate.

3. The galvanized steel sheet rolling oil according to claim 1, characterized by, The fluorine-containing additive comprises at least one of fluorine-containing non-ionic polymer, fluorine-containing anionic polymer and perfluoropolyether.

4. The galvanized steel sheet roll oil according to claim 1, characterized by, The fluorine-containing additive is polyhexafluoropropylene oxide.

5. The galvanized steel sheet rolling oil according to claim 1, characterized by, The antioxidant comprises at least one of phenolic antioxidant and chelated metal ion antioxidant.

6. Galvanised steel sheet rolling oil according to any one of claims 1 to 5, characterised in that, According to the mass percentage, it comprises: No. 46 white oil 50%, No. 80 white oil 40%, decyl tetradecanol 5% or isomeric hexadecanol 5%, triester of p-benzenedicarboxylic acid 4%, polyhexafluoropropylene oxide 0.5%, 2,6-di-tert-butyl-p-cresol 0.5%.

7. A method for preparing a roll-on galvannealed steel sheet oil according to any one of claims 1 to 4, characterized in that, It comprises the following steps: The base oil, the penetrant and the extreme pressure lubricant are mixed uniformly at the temperature of 55-60 DEG C, then the fluorine-containing additive is added, and after mixing uniformly, it is cooled to room temperature, the antioxidant is added, and after mixing uniformly, the galvanized steel plate rolling oil is obtained.

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