A carbon steel rolling oil with a strong and stable dispersed emulsion system

Abstract

The invention belongs to the technical field of rolling oil preparation process, and particularly relates to a carbon steel rolling oil with a strong stable dispersion type emulsified system. The carbon steel rolling oil with a strong stable dispersion type emulsified system comprises the following components measured by volume: 45-55 parts of palm oil, 15-25 parts of coconut oil, 5-10 parts of trimethylolpropane oleate, 2-4 parts of fatty alcohol polyoxyethylene ether phosphate, 0.5-1 part of methyl benzotriazole, 0.5-1 part of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 5-10 parts of sulfurized lard, 2-4 parts of dialkyl pentasulfide, 0.5-1 part of dimer acid, 2-4 parts of phosphate, 2-4 parts of cationic compound emulsifier and 1-3 parts of nonionic compound emulsifier. The present invention has good stability and dispersion characteristics, can improve the plate surface quality during the rolling process, and at the same time, takes into account the improvement of rust prevention and lubrication properties, and can meet the demand for stable performance of products in high temperature and high pressure environments for a long time.

Description

Technical Field

[0001] The invention belongs to the technical field of rolling oil preparation technology, and in particular relates to a carbon steel rolling oil with a strong stable dispersed emulsified system. Background Art

[0002] With the increasing industry capacity of cold-rolled steel in the current market, the scale of the entire cold-rolled steel market is also being driven to continue to expand. In recent years, my country's machinery, construction, shipbuilding, automobile, electricity, petrochemical, transportation, coal, environmental protection, railways, home appliances, light industry, small hardware and other industries have developed rapidly, stimulating the market demand for cold-rolled steel. At the same time, as my country's automobile production has leapt to the forefront of the world in recent years, the market demand for domestic high-quality cold-rolled steel has continued to expand. In the process of rolling cold-rolled steel, the surface of the steel plate is prone to heat and friction and wear, and lubricants are needed to reduce the friction coefficient, reduce heat accumulation, and prevent oxidation.

[0003] Most common rolling lubricants are semi-stable, such as semi-solid rolling oil, liquid rolling emulsion, etc. Among them, semi-solid rolling oil needs to be preheated when used to improve its fluidity on the workpiece surface, and liquid rolling emulsion needs to be stirred when used to avoid precipitation and stratification of the rolling emulsion. However, in the current market, some steel rolling mills are affected by various factors such as capital, site size and production costs. There is a phenomenon that they do not have heating, circulation, stirring and other instruments and equipment, which limits the scope of use of semi-stable lubricants. In addition, the water used to prepare the emulsion in the experiment does not remove the ions therein. In this case, the semi-stable lubricant is not suitable for such working conditions, and the quality of the plate surface after rolling needs to be further improved. Summary of the invention

[0004] The purpose of the present invention is to provide a carbon steel rolling oil with a strong stable dispersed emulsion system, which has good stability and dispersion characteristics, can improve the plate surface quality during the rolling process, and at the same time, take into account the improvement of rust prevention and lubrication properties, and can meet the performance stability requirements of products in high temperature and high pressure environments for a long time. At the same time, its scope of application is greatly improved compared to semi-stable rolling oil.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A carbon steel rolling oil with a strong stable dispersed emulsified system comprises the following components measured by volume: 45-55 parts of palm oil, 15-25 parts of coconut oil, 5-10 parts of trimethylolpropane oleate, 2-4 parts of fatty alcohol polyoxyethylene ether phosphate, 0.5-1 part of methylbenzotriazole, 0.5-1 part of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 5-10 parts of sulfurized lard, 2-4 parts of dialkyl pentasulfide, 0.5-1 part of dimer acid, 2-4 parts of phosphate, 2-4 parts of cationic compound emulsifier and 1-3 parts of nonionic compound emulsifier.

[0007] In a preferred embodiment, a carbon steel rolling oil with a strong stable dispersed emulsion system includes the following components measured by volume: 45 parts of palm oil, 25 parts of coconut oil, 8.5 parts of trimethylolpropane oleate, 2 parts of fatty alcohol polyoxyethylene ether phosphate, 0.5 parts of methylbenzotriazole, 0.5 parts of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 5 parts of sulfurized lard, 2 parts of dialkyl pentasulfide, 1 part of dimer acid, 2 parts of phosphate, 4 parts of cationic compound emulsifier, and 2 parts of non-ionic compound emulsifier.

[0008] In a preferred embodiment, a carbon steel rolling oil with a strong stable dispersed emulsion system includes the following components measured by volume: 48 parts of palm oil, 22 parts of coconut oil, 6 parts of trimethylolpropane oleate, 2.5 parts of fatty alcohol polyoxyethylene ether phosphate, 0.5 parts of methylbenzotriazole, 0.5 parts of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 6.5 parts of sulfurized lard, 2.5 parts of dialkyl pentasulfide, 0.5 parts of dimer acid, 2.5 parts of phosphate, 3 parts of cationic compound emulsifier, and 1 part of non-ionic compound emulsifier.

[0009] In a preferred embodiment, a carbon steel rolling oil with a strong stable dispersed emulsion system includes the following components measured by volume: 50 parts of palm oil, 20 parts of coconut oil, 8 parts of trimethylolpropane oleate, 2 parts of fatty alcohol polyoxyethylene ether phosphate, 0.5 parts of methylbenzotriazole, 0.5 parts of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 7 parts of sulfurized lard, 3 parts of dialkyl pentasulfide, 0.75 parts of dimer acid, 3 parts of phosphate ester, 2 parts of cationic compound emulsifier, and 2 parts of non-ionic compound emulsifier.

[0010] In a preferred embodiment, the cationic composite emulsifier includes the following components: T13, T15 and fatty amine polyoxyethylene ether, and the volume ratio of the above components is: T13: T15: AC1205 = 1-2: 2-4: 2-4.

[0011] In a preferred embodiment, the nonionic compound emulsifier comprises the following components: OP-3 and OP-7, and the volume ratio of the above components is: OP-3:OP-7=0.5-1:1-3.

[0012] A method for preparing a carbon steel rolling oil with a strong and stable dispersed emulsion system, which is applicable to the above-mentioned carbon steel rolling oil with a strong and stable dispersed emulsion system, comprises the following steps:

[0013] Step 1: Add palm oil into the reactor and heat it to the first rated temperature;

[0014] Step 2: Add 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant and methylbenzotriazole to the heated palm oil in sequence, continue stirring to dissolve, and obtain a mixed solution A. Stop heating when the mixed solution A becomes clear and transparent;

[0015] Step 3: Continue stirring until the mixed solution A cools to the second rated temperature, and add coconut oil, trimethylolpropane oleate, fatty alcohol polyoxyethylene ether, sulfided lard, dialkyl pentasulfide, dimer acid, and phosphate in sequence while stirring. After the addition is completed, continue stirring for 20 to 40 minutes to obtain a mixed solution B;

[0016] Step 4: Add non-ionic compound emulsifier and cationic compound emulsifier to mixed liquid B in sequence, and continue stirring to room temperature to obtain a strong and stable dispersed emulsion system carbon steel rolling oil.

[0017] In a preferred embodiment, in Step 2, the stirring speed of the reactor is 150 to 180 rpm, and in Step 3, the stirring speed of the reactor is 180 to 200 rpm.

[0018] The technical effects achieved by the present invention are:

[0019] The invention improves the stability and dispersion characteristics of the emulsion by using a nonionic compound emulsifier and a cationic compound emulsifier, so that the rolling oil product has a strong stable dispersion emulsification system.

[0020] The present invention improves the stability of rolling oil when it is used in emulsification, and at the same time, a certain amount of dispersant is compounded to enhance the overall dispersion performance of the emulsion, thereby improving the plate surface quality during the rolling process, while taking into account the improvement of rust prevention and lubrication performance, and achieving a balance of rolling oil through the compounding of multiple additives;

[0021] The present invention has good lubricity during use, can provide good rolling performance for the rolling mill, and at the same time has excellent plate surface cleaning performance and emulsion stability during use, can meet the demand for stable performance of products in high temperature and high pressure environments for a long time, and has non-toxic and harmless characteristics, and the residues meet environmental protection requirements. At the same time, it can be suitable for steel mills that do not have heating, circulation, stirring and other instruments and equipment, and its scope of application is greatly improved compared to semi-stable rolling oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a kinematic viscosity test chart of the products in each embodiment and each comparative example of the present invention;

[0023] Figure 2 It is the oil film strength test diagram of the products in each embodiment and each comparative example of the present invention;

[0024] Figure 3 It is a comparison chart of the friction coefficients of the products in various embodiments of the present invention and various comparative examples;

[0025] Figure 4 It is a comparison chart of the saponification values ​​of the products in each embodiment of the present invention and each comparative example;

[0026] Figure 5 It is a comparison chart of the particle size of the emulsions of the products in each embodiment of the present invention and each comparative example;

[0027] Figure 6 It is the ESI comparison diagram of the emulsions of the products in each embodiment of the present invention and each comparative example;

[0028] Figure 7 It is a test diagram of the antirust performance of the products in each embodiment and each comparative example of the present invention;

[0029] Figure 8 It is a preparation process flow chart of the present invention. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example

[0034] Embodiment 1

[0035] A carbon steel rolling oil with a strong stable dispersed emulsion system includes the following components: 45L of palm oil, 25L of coconut oil, 8.5L of trimethylolpropane oleate, 2L of fatty alcohol polyoxyethylene ether phosphate, 0.5L of methylbenzotriazole, 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 5L of sulfurized lard, 2L of dialkyl pentasulfide, 1L of dimer acid, 2L of phosphate, 4L of cationic compound emulsifier, and 2L of non-ionic compound emulsifier.

[0036] Specifically, a strong emulsifier is used to improve the emulsification performance of carbon steel rolling fluid, and to improve the stability of rolling oil during emulsified use. At the same time, a certain amount of dispersant (such as palm oil, trimethylolpropane oleate, fatty alcohol polyoxyethylene ether phosphate and sulfurized lard, cationic compound emulsifier) ​​is compounded to enhance the overall dispersion performance of the emulsion, improve the plate surface quality during rolling, and take into account the improvement of rust prevention and lubrication performance. A balance is achieved in the rolling oil through the compounding of multiple additives. The rolling oil has good cleaning performance and emulsion stability, and can meet the performance stability of the product in a long-term high temperature and high pressure environment. The prepared strong and stable dispersed emulsion system carbon steel rolling oil is non-toxic and harmless, and the residue meets environmental protection requirements.

[0037] In a preferred embodiment, the nonionic compound emulsifier includes the following components: OP-3 and OP-7, and the volume ratio of the above components is: OP-3:OP-7=0.5~1:1~3. In this embodiment, the volume ratio of the components of the nonionic compound emulsifier is OP-3:OP-7=1:2.5.

[0038] Specifically, since the non-ionic compound emulsifier has the characteristic of not being ionized in water, the hydrophilic part of the emulsifier is composed of different types of polar groups, and the lipophilic part of the emulsifier is directly combined with the ether bond in ethylene oxide, the non-ionic compound emulsifier is not good for rust prevention, but has good resistance to hard water.

[0039] In a preferred embodiment, the cationic compound emulsifier includes the following components: T13, T15 and fatty amine polyoxyethylene ether, and the volume ratio of the above components is: T13: T15: AC1205 = 1~2: 2~4: 2~4. In this embodiment, the volume ratio of the components of the cationic compound emulsifier is T13: T15: AC1205 = 1:2:4.

[0040] Specifically, cationic compound emulsifiers can make up for the shortcomings of non-ionic compound emulsifiers in terms of dispersion performance. Cationic compound emulsifiers will generate positive ionic hydrophilic groups of different alkyl or aromatic groups when ionized in water, so that the oil sample can exhibit better dispersion characteristics in water. The stability of the emulsion can be improved by using cationic compound emulsifiers and non-ionic compound emulsifiers in combination, so that the product rolling oil has a strong and stable dispersion emulsion system.

[0041] See also Figure 8 As shown in FIG. 1 , the preparation process of the above-mentioned strong stable dispersed emulsion system carbon steel rolling oil is as follows: 45 L of palm oil is placed in a reactor, heated to 80° C., stirred at a speed of 170 rpm, and 0.5 L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant and 0.5 L of methylbenzotriazole are slowly added in sequence. After the addition is completed, stirring is continued for 45 minutes to obtain a mixed solution A. When the mixed solution A becomes clear and transparent, heating is stopped, and stirring is continued until the mixed solution A cools to 50° C. The stirring speed is adjusted to The mixture was stirred at 200 rpm, and 25 L of coconut oil, 8.5 L of trimethylolpropane oleate, 2 L of fatty alcohol polyoxyethylene ether phosphate, 5 L of sulfurized lard, 2 L of dialkyl pentasulfide, 1 L of dimer acid and 2 L of phosphate were added in sequence. After the addition was completed, stirring was continued for 30 minutes to obtain a mixed solution B. 2 L of a non-ionic compound emulsifier and 4 L of a cationic compound emulsifier were added to the mixed solution B in sequence, and stirring was continued until the solution temperature was cooled to room temperature to obtain a brown-yellow strongly stable dispersed emulsion system carbon steel rolling oil.

[0042] Embodiment 2

[0043] A carbon steel rolling oil with a strong stable dispersed emulsion system includes the following components: 48L of palm oil, 22L of coconut oil, 6L of trimethylolpropane oleate, 2.5L of fatty alcohol polyoxyethylene ether phosphate, 0.5L of methylbenzotriazole, 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 6.5L of sulfurized lard, 2.5L of dialkyl pentasulfide, 0.5L of dimer acid, 2.5L of phosphate, 3L of cationic compound emulsifier, and 1L of non-ionic compound emulsifier.

[0044] The process flow is as follows: 48L of palm oil is placed in a reactor, heated to 80°C, stirred at 170 rpm, and 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant and 0.5L of methylbenzotriazole are slowly added in sequence. After the addition is completed, stirring is continued for 45 minutes to obtain a mixed solution A. After the mixed solution A becomes clear, heating is stopped, and stirring is continued until the mixed solution A cools to 50°C. The stirring speed is adjusted to 200 rpm, and 22L of coconut oil, 6L of trimethylolpropane oleate, 2.5L of fatty alcohol polyoxyethylene ether phosphate, and 6L of ethanol are added in sequence. .5L of sulfurized lard, 2.5L of dialkyl pentasulfide, 0.5L of dimer acid and 2.5L of phosphate ester, after adding, continue stirring for 30 minutes to obtain a mixed solution B, add 1L of non-ionic compound emulsifier and 3L of cationic compound emulsifier to the mixed solution B in sequence, and continue stirring until the solution temperature cools to room temperature to obtain a brown-yellow strongly stable dispersed emulsion system carbon steel rolling oil, and test the strongly stable dispersed emulsion system carbon steel rolling oil, the test content at least includes: kinematic viscosity test, oil film strength test, friction coefficient test, saponification value test, emulsion particle size test and emulsion ESI test.

[0045] Embodiment 3

[0046] A carbon steel rolling oil with a strong stable dispersed emulsion system comprises the following components: 50L of palm oil, 20L of coconut oil, 8L of trimethylolpropane oleate, 2L of fatty alcohol polyoxyethylene ether phosphate, 0.5L of methylbenzotriazole, 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 7L of sulfurized lard, 3L of dialkyl pentasulfide, 0.75L of dimer acid, 3L of phosphate ester, 2L of cationic compound emulsifier and 2L of nonionic compound emulsifier.

[0047] The process flow is as follows: 50L of palm oil is placed in a reactor, heated to 80°C, stirred at 170 rpm, and 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant and 0.5L of methylbenzotriazole are slowly added in sequence. After the addition is completed, stirring is continued for 45 minutes to obtain a mixed solution A. When the mixed solution A becomes clear, heating is stopped, and stirring is continued until the mixed solution A cools to 50°C, the stirring speed is adjusted to 200 rpm, and the mixture is stirred in sequence. Add 20L of coconut oil, 8L of trimethylolpropane oleate, 2L of fatty alcohol polyoxyethylene ether phosphate, 7L of sulfurized lard, 3L of dialkyl pentasulfide, 0.75L of dimer acid and 3L of phosphate. After the addition is completed, continue stirring for 30 minutes to obtain a mixed solution B. Add 2L of a non-ionic compound emulsifier and 2L of a cationic compound emulsifier to the mixed solution B in sequence, and continue stirring until the solution temperature cools to room temperature to obtain a brown-yellow strongly stable dispersed emulsion system carbon steel rolling oil.

[0048] Embodiment 4

[0049] A carbon steel rolling oil with a strong stable dispersed emulsified system comprises the following components: 53L of palm oil, 17L of coconut oil, 7.5L of trimethylolpropane oleate, 3L of fatty alcohol polyoxyethylene ether phosphate, 0.5L of methylbenzotriazole, 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 6L of sulfided lard, 2.5L of dialkyl pentasulfide, 0.8L of dimer acid, 2.5L of phosphate, 3L of cationic compound emulsifier and 1.5L of nonionic compound emulsifier.

[0050] The process is as follows: 53L of palm oil is placed in a reactor, heated to 80°C, stirred at 170 rpm, and 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant and 0.5L of methylbenzotriazole are slowly added in sequence. After the addition is completed, stirring is continued for 45 minutes to obtain a mixed solution A. When the mixed solution A becomes clear, heating is stopped, stirring is continued until the mixed solution A cools to 50°C, the stirring speed is adjusted to 200 rpm, and 170 rpm are added in sequence. L of coconut oil, 7.5L of trimethylolpropane oleate, 3L of fatty alcohol polyoxyethylene ether phosphate, 6L of sulfurized lard, 2.5L of dialkyl pentasulfide, 0.8L of dimer acid and 2.5L of phosphate. After the addition is completed, stirring is continued for 30 minutes to obtain a mixed solution B. 1.5L of a non-ionic compound emulsifier and 3L of a cationic compound emulsifier are added to the mixed solution B in sequence, and stirring is continued until the solution temperature cools to room temperature to obtain a brown-yellow strongly stable dispersed emulsion system carbon steel rolling oil.

[0051] Embodiment 5

[0052] A carbon steel rolling oil with a strong stable dispersed emulsion system includes the following components: 55L of palm oil, 15L of coconut oil, 10L of trimethylolpropane oleate, 2.5L of fatty alcohol polyoxyethylene ether phosphate, 0.5L of methylbenzotriazole, 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 8L of sulfurized lard, 2L of dialkyl pentasulfide, 0.5L of dimer acid, 2L of phosphate ester, 2L of cationic compound emulsifier, and 1L of non-ionic compound emulsifier.

[0053] The process is as follows: 55 L of palm oil is placed in a reactor, heated to 80°C, stirred at 170 rpm, and 0.5 L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant and 0.5 L of methylbenzotriazole are slowly added in sequence. After the addition is completed, stirring is continued for 45 minutes to obtain a mixed solution A. When the mixed solution A becomes clear, heating is stopped, and stirring is continued until the mixed solution A cools to 50°C. The stirring speed is adjusted to 200 rpm, and the mixed solution A is added in sequence. Add 15L of coconut oil, 10L of trimethylolpropane oleate, 2.5L of fatty alcohol polyoxyethylene ether phosphate, 8L of sulfurized lard, 2L of dialkyl pentasulfide, 0.5L of dimer acid and 2L of phosphate. After the addition is completed, stir for 30 minutes to obtain a mixed solution B. Add 1L of a non-ionic compound emulsifier and 2L of a cationic compound emulsifier to the mixed solution B in sequence, and continue stirring until the solution temperature cools to room temperature to obtain a brown-yellow strongly stable dispersed emulsion system carbon steel rolling oil.

[0054] Comparative Example

[0055] Comparative Example 1

[0056] A carbon steel rolling oil with a strong stable dispersed emulsified system comprises the following components: 45L of palm oil, 25L of coconut oil, 8.5L of trimethylolpropane oleate, 2L of fatty alcohol polyoxyethylene ether phosphate, 0.5L of methylbenzotriazole, 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 5L of sulfurized lard, 2L of dialkyl pentasulfide, 1L of dimer acid, 2L of phosphate ester and 2L of non-ionic compound emulsifier.

[0057] The preparation process is as follows: 45 L of palm oil is placed in a reactor, heated to 80°C, stirred at 170 rpm, and 0.5 L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant and 0.5 L of methylbenzotriazole are slowly added in sequence. After the addition is completed, stirring is continued for 45 minutes to obtain a mixed solution A. When the mixed solution A becomes clear, heating is stopped, and stirring is continued until the mixed solution A cools to 50°C, and the stirring speed is adjusted to 20 0 rpm, and add 25 L of coconut oil, 8.5 L of trimethylolpropane oleate, 2 L of fatty alcohol polyoxyethylene ether phosphate, 5 L of sulfurized lard, 2 L of dialkyl pentasulfide, 1 L of dimer acid and 2 L of phosphate in sequence. After the addition is completed, stirring is continued for 30 minutes to obtain a mixed solution B. 2 L of non-ionic compound emulsifier is added to the mixed solution B, and stirring is continued until the solution temperature is cooled to room temperature to obtain a brown-yellow strongly stable dispersed emulsion system carbon steel rolling oil.

[0058] It should be noted that the difference between this comparative example and Example 1 is that no cationic composite emulsifier is added in this comparative example.

[0059] Comparative Example 2

[0060] A carbon steel rolling oil with a strong stable dispersed emulsion system includes the following components: 48L of palm oil, 22L of coconut oil, 6L of trimethylolpropane oleate, 2.5L of fatty alcohol polyoxyethylene ether phosphate, 0.5L of methylbenzotriazole, 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 6.5L of sulfurized lard, 2.5L of dialkyl pentasulfide, 0.5L of dimer acid, 2.5L of phosphate, and 3L of cationic compound emulsifier.

[0061] The process flow is as follows: 48L of palm oil is placed in a reactor, heated to 80°C, stirred at 170 rpm, and 0.5L of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant and 0.5L of methylbenzotriazole are slowly added in sequence. After the addition is completed, stirring is continued for 45 minutes to obtain a mixed solution A. When the mixed solution A becomes clear and transparent, heating is stopped, and stirring is continued until the mixed solution A cools to 50°C, and the stirring speed is adjusted to 200 rpm. , and add 22L of coconut oil, 6L of trimethylolpropane oleate, 2.5L of fatty alcohol polyoxyethylene ether phosphate, 6.5L of sulfurized lard, 2.5L of dialkyl pentasulfide, 0.5L of dimer acid and 2.5L of phosphate in sequence. After the addition is completed, stirring is continued for 30 minutes to obtain a mixed solution B. 3L of a cationic composite emulsifier is added to the mixed solution B, and stirring is continued until the solution temperature cools to room temperature to obtain a brown-yellow strongly stable dispersed emulsion system carbon steel rolling oil.

[0062] It should be noted that the difference between this comparative example and Example 2 is that no non-ionic compound emulsifier is added in this comparative example.

[0063] In summary, please refer to Figures 1 to 7 As shown, the strong stable dispersed emulsion system carbon steel rolling oil prepared in Example 3 has higher performance indicators such as kinematic viscosity, oil film strength, friction coefficient and saponification value than the products in other examples and comparative examples. The strong stable dispersed emulsion system carbon steel rolling oil prepared in Example 3 has strong emulsification and dispersion distribution characteristics. During the plate rolling process, it can not only provide appropriate lubrication for rolling, but also clean the plate surface to reduce the emulsion residue on the plate surface. At the same time, it also has good anti-rust ability, which can further improve the plate surface quality during the rolling process. At the same time, it can be suitable for steel mills that do not have heating, circulation, stirring and other instruments and equipment. Its scope of application is greatly improved compared with semi-stable rolling oil.

[0064] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A carbon steel rolling oil with a strong and stable dispersed emulsion system, characterized in that: It includes the following components measured by volume: 45-55 parts of palm oil, 15-25 parts of coconut oil, 5-10 parts of trimethylolpropane oleate, 2-4 parts of fatty alcohol polyoxyethylene ether phosphate, 0.5-1 part of methylbenzotriazole, 0.5-1 part of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 5-10 parts of sulfurized lard, 2-4 parts of dialkyl pentasulfide, 0.5-1 part of dimer acid, 2-4 parts of phosphate, 2-4 parts of cationic compound emulsifier, and 1-3 parts of non-ionic compound emulsifier; Among them, the cationic compound emulsifier includes the following components: T13, T15 and fatty amine polyoxyethylene ether, and the volume ratio of the above components is: T13: T15: AC1205 = 1 ~ 2: 2 ~ 4: 2 ~ 4; the non-ionic compound emulsifier includes the following components: OP-3 and OP-7, and the volume ratio of the above components is: OP-3: OP-7 = 0.5 ~ 1: 1 ~ 3.

2. The carbon steel rolling oil with a strong stable dispersion emulsion system according to claim 1, characterized in that: It includes the following components measured by volume: 45 parts of palm oil, 25 parts of coconut oil, 8.5 parts of trimethylolpropane oleate, 2 parts of fatty alcohol polyoxyethylene ether phosphate, 0.5 parts of methyl benzotriazole, 0.5 parts of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 5 parts of sulfurized lard, 2 parts of dialkyl pentasulfide, 1 part of dimer acid, 2 parts of phosphate, 4 parts of cationic compound emulsifier, and 2 parts of non-ionic compound emulsifier.

3. The carbon steel rolling oil with a strong stable dispersion emulsion system according to claim 1, characterized in that: It includes the following components measured by volume: 48 parts of palm oil, 22 parts of coconut oil, 6 parts of trimethylolpropane oleate, 2.5 parts of fatty alcohol polyoxyethylene ether phosphate, 0.5 parts of methylbenzotriazole, 0.5 parts of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 6.5 parts of sulfurized lard, 2.5 parts of dialkyl pentasulfide, 0.5 parts of dimer acid, 2.5 parts of phosphate, 3 parts of cationic compound emulsifier and 1 part of non-ionic compound emulsifier.

4. The carbon steel rolling oil with a strong stable dispersion emulsion system according to claim 1, characterized in that: It includes the following components measured by volume: 50 parts of palm oil, 20 parts of coconut oil, 8 parts of trimethylolpropane oleate, 2 parts of fatty alcohol polyoxyethylene ether phosphate, 0.5 parts of methylbenzotriazole, 0.5 parts of 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant, 7 parts of sulfurized lard, 3 parts of dialkyl pentasulfide, 0.75 parts of dimer acid, 3 parts of phosphate ester, 2 parts of cationic compound emulsifier, and 2 parts of non-ionic compound emulsifier.

5. A method for preparing a carbon steel rolling oil having a strong and stable dispersed emulsion system, which is applicable to the carbon steel rolling oil having a strong and stable dispersed emulsion system as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Add palm oil into the reactor and heat it to the first rated temperature; Step 2: Add 2,6-di-tert-butyl-4-(dimethylaminomethyl)phenol antioxidant and methylbenzotriazole to the heated palm oil in sequence, continue stirring to dissolve, and obtain a mixed solution A. Stop heating when the mixed solution A becomes clear and transparent; Step 3: Continue stirring until the mixed solution A cools to the second rated temperature, and add coconut oil, trimethylolpropane oleate, fatty alcohol polyoxyethylene ether phosphate, sulfided lard, dialkyl pentasulfide, dimer acid, and phosphate in sequence while stirring. After the addition is completed, continue stirring for 20 to 40 minutes to obtain a mixed solution B; Step 4: Add non-ionic compound emulsifier and cationic compound emulsifier to mixed liquid B in sequence, and continue stirring to room temperature to obtain a strong and stable dispersed emulsion system carbon steel rolling oil.

6. The method for preparing a carbon steel rolling oil having a strong stable dispersion emulsion system according to claim 5, characterized in that: In the Step 2, the stirring speed of the reaction kettle is 150 to 180 rpm, and in the Step 3, the stirring speed of the reaction kettle is 180 to 200 rpm.

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