Metal molybdenum-containing silicon steel hot rolling oil and preparation method thereof

Abstract

The invention relates to the technical field of metal rolling processing and hot rolling, and discloses metal molybdenum-containing silicon steel hot rolling oil, which is prepared from the following components in parts by weight: a) 1 to 10 parts of extreme pressure anti-wear agent; b) 0.01-1 part of a demulsifying agent; c) 15-30 parts of a simple ester; d) 1-20 parts of poly fatty acid ester; and e) 10-50 parts of base oil. The silicon steel hot rolling oil containing the metal molybdenum can form a semi-stable suspension liquid when being added into water, and the suspension liquid has good high-temperature lubricating performance when being used for hot rolling of high-grade silicon steel or high-strength steel materials, improves the roller replacement period of a roller, reduces rolling energy consumption and endows a rolled plate surface with excellent surface quality; and the content of phosphorus and sulfur-containing extreme pressure agents in the oil product is reduced, the use concentration is reduced, and environmental protection and economic benefit improvement are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of hot rolling of metal calendering, and more specifically to a silicon steel hot rolling oil containing metallic molybdenum and a preparation method thereof. Background Art

[0002] With the vigorous rise of new energy vehicles at home and abroad in recent years, as well as the west-to-east power transmission, wind (hydro) power generation, etc., China's silicon steel production has continued to grow in the past few decades, making it the world's largest silicon steel producer. Silicon steel is an important variety of steel, mainly used in the manufacture of electromagnetic equipment such as power transformers and motors. Its demand is closely related to the development of the power industry and the machinery manufacturing industry. With the increase in domestic and foreign market demand, China's silicon steel production capacity and output continue to expand. Many companies have increased the production scale of silicon steel through technological transformation and expansion projects to meet market demand. According to data from the Electrical Steel Branch of the China Metal Society, in 2022, my country's silicon steel production reached 14.124 million tons, a year-on-year increase of 7.14%. In 2023, my country's silicon steel production will be 15.2752 million tons, a year-on-year increase of 8.15%. Among them, the demand for hot-rolled strip steel plates, the source of silicon steel strips, has also increased significantly. Due to the increase in production capacity and the continuous improvement of customer requirements, more and more hot-rolled strip steel manufacturers have adopted more advanced silicon steel and ordinary carbon steel mixed rolling technology, and in order to improve the surface quality and production efficiency of hot-rolled strip steel, they have continuously improved the hot-rolling rolling process and technology of silicon steel; hot rolling of silicon steel refers to the rolling process above the metal recrystallization temperature, which is mainly used for the production of silicon steel plates. Silicon steel is a silicon alloy steel with a silicon content of 1.0-4.5% and a carbon content of less than 0.08%. It has the characteristics of high magnetic permeability, low coercive force, and large resistivity. It is widely used in new energy motors, ultra-high voltage transformers, electrical appliances, and magnetic materials in electrical instruments; for rolled silicon steel materials, depending on the silicon content, the higher the silicon content, the worse the metal plasticity during hot rolling, the higher the deformation resistance, and the more likely it is to produce adhesion between the rolled piece and the roller. Plate shape and surface quality control are important quality indicators of hot-rolled strip steel and are production control. Key points and difficulties: Since the hot rolling temperature of silicon steel is 1300-1400℃, which is 280-300℃ higher than that of ordinary carbon steel, the surface temperature of the roll during rolling is also more than 50℃ higher than that of ordinary carbon steel, and the rolling load is more than twice that of ordinary carbon steel, the mixed rolling plan of silicon steel and ordinary carbon steel is quite different from the rolling plan of single carbon steel. In addition, the mixed rolling of silicon steel and ordinary carbon steel, due to the frequent switching of steel grades and specifications, puts forward higher requirements on plate shape and surface quality, and also puts forward higher requirements on hot rolling oil, the lubricating medium of the hot rolling process.

[0003] Due to the late development of silicon steel hot rolling technology in China, there is not much existing technology for hot rolling oil used in hot rolling of silicon steel. At present, most of the industry focuses on hot rolling oil used in hot rolling process of ordinary carbon steel or stainless steel.

[0004] Therefore, it is of great significance to develop a new process oil suitable for hot rolling of silicon steel and a hot rolling oil that can simultaneously meet the lubrication requirements of the hot rolling processes of silicon steel and ordinary carbon steel. Summary of the invention

[0005] One of the technical problems to be solved by the present invention is that, according to the rolling characteristics of silicon steel, the lubricating performance and the oxide film retention performance of the roll surface of the hot rolling oil composition in the prior art are poor, and it is not suitable for the mixed rolling process of silicon steel and ordinary carbon steel. A silicon steel hot rolling oil composition is invented. The composition uses metallic molybdenum as the main anti-wear additive, does not use or uses less traditional sulfur and phosphorus extreme pressure additives, has good lubricating performance and roll protection performance, can effectively reduce rolling current and energy consumption, and is suitable for the mixed rolling process of silicon steel and ordinary carbon steel.

[0006] The second technical problem to be solved by the present invention is to provide a method for improving the adsorption of oil products, which can evenly adsorb the surfaces of rollers and steel plates in a very short time after being sprayed through a nozzle, effectively protect the rollers, reduce wear, and improve the surface quality of the steel plates.

[0007] To achieve the above object, the present invention provides the following technical solution: a silicon steel hot rolling oil containing metallic molybdenum, which is composed of the following components in parts by weight:

[0008] a) 1 to 10 parts of extreme pressure anti-wear agent;

[0009] b) 0.01 to 1 part of anti-emulsifier;

[0010] c) 15 to 30 parts of simple esters;

[0011] d) 1 to 20 parts of poly fatty acid ester;

[0012] e) 10 to 50 parts of base oil.

[0013] As a preferred technical solution of the present invention, the extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1-2:1.

[0014] As a preferred technical solution of the present invention, the anti-emulsifier is selected from at least two of propylene oxide copolymers, ethylene glycol esters or alkoxylated fatty alcohols.

[0015] As a preferred technical solution of the present invention, the simple ester is selected from one of pentaerythritol ester and butyl oleate.

[0016] As a preferred technical solution of the present invention, the poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate.

[0017] As a preferred technical solution of the present invention, the base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500.

[0018] A method for preparing silicon steel hot rolling oil containing metallic molybdenum comprises the following steps:

[0019] Step 1: Prepare raw materials according to the weight proportions of the following components: a) 1 to 10 parts of extreme pressure anti-wear agent; b) 0.01 to 1 part of anti-emulsifier; c) 15 to 30 parts of simple ester; d) 1 to 20 parts of poly fatty acid ester; e) 10 to 50 parts of base oil; wherein the extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1 to 2:1; wherein the anti-emulsifier is selected from at least two of propylene oxide copolymer, ethylene glycol ester or alkoxylated fatty alcohol; wherein the simple ester is selected from one of pentaerythritol ester or butyl oleate; wherein the poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate; wherein the base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500;

[0020] Step 2: 10 to 50 parts of base oil and 1 to 20 parts of polyfatty acid ester are sequentially added into a stirring blending kettle, and stirred at a constant temperature of 50 to 75° C. to obtain material 1;

[0021] Step 3: Add 1 to 10 parts of extreme pressure anti-wear agent to material 1, stir evenly, and obtain material 2;

[0022] Step 4: Add 0.01-1 parts of anti-emulsifier and 15-30 parts of simple ester to material 2 in sequence, stir and stop heating, gradually cool to room temperature, stop stirring, and obtain a hot rolling oil composition.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The hot rolling oil composition prepared by the present invention has good extreme pressure lubrication performance and anti-emulsification performance, can meet the lubrication requirements of stainless steel and ordinary carbon steel rolling processes at the same time, has achieved good technical effects, and can be used in industrial applications of stainless steel and ordinary carbon steel mixed rolling processes;

[0025] 2. The silicon steel hot rolling oil containing metallic molybdenum can form a semi-stable suspension when added to water. The suspension has good high-temperature lubrication performance when hot rolling high-grade silicon steel or high-strength steel materials, improves the roll changing cycle, reduces rolling energy consumption, and gives the rolled plate surface excellent surface quality. At the same time, it reduces the content of phosphorus and sulfur extreme pressure agents in the oil and reduces the use concentration, which is beneficial to environmental protection and improves economic benefits. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] The present invention provides a silicon steel hot rolling oil containing metallic molybdenum, which is composed of the following components in parts by weight:

[0029] a) 1 to 10 parts of extreme pressure anti-wear agent;

[0030] b) 0.01 to 1 part of anti-emulsifier;

[0031] c) 15 to 30 parts of simple esters;

[0032] d) 1 to 20 parts of poly fatty acid ester;

[0033] e) 10 to 50 parts of base oil.

[0034] The extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1-2:1.

[0035] Wherein, the anti-emulsifier is selected from propylene oxide copolymer, ethylene glycol ester and alkoxylated fatty alcohol.

[0036] Wherein, the simple ester is selected from one of pentaerythritol ester and butyl oleate.

[0037] Wherein, the poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate.

[0038] The base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500.

[0039] A method for preparing silicon steel hot rolling oil containing metallic molybdenum comprises the following steps:

[0040] Step 1: Prepare raw materials according to the weight proportions of the following components: a) 1 to 10 parts of extreme pressure anti-wear agent; b) 0.01 to 1 part of anti-emulsifier; c) 15 to 30 parts of simple ester; d) 1 to 20 parts of poly fatty acid ester; e) 10 to 50 parts of base oil; wherein the extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1 to 2:1; wherein the anti-emulsifier is selected from at least two of propylene oxide copolymer, ethylene glycol ester or alkoxylated fatty alcohol; wherein the simple ester is selected from one of pentaerythritol ester or butyl oleate; wherein the poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate; wherein the base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500;

[0041] Step 2: 10 to 50 parts of base oil and 1 to 20 parts of polyfatty acid ester are sequentially added into a stirring blending kettle, and stirred at a constant temperature of 50 to 75° C. to obtain material 1;

[0042] Step 3: Add 1 to 10 parts of extreme pressure anti-wear agent to material 1, stir evenly, and obtain material 2;

[0043] Step 4: Add 0.01 to 1 parts of anti-emulsifier and 15 to 30 parts of simple ester to material 2 in sequence, stir and stop heating, gradually cool to room temperature, stop stirring, and obtain a hot rolling oil composition.

[0044] Embodiment 2:

[0045] The present invention provides a silicon steel hot rolling oil containing metallic molybdenum, which is composed of the following components in parts by weight:

[0046] a) 1 to 10 parts of extreme pressure anti-wear agent;

[0047] b) 0.01 to 1 part of anti-emulsifier;

[0048] c) 15 to 30 parts of simple esters;

[0049] d) 1 to 20 parts of poly fatty acid ester;

[0050] e) 10 to 50 parts of base oil.

[0051] The extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1-2:1.

[0052] Wherein, the anti-emulsifier is selected from at least two of propylene oxide copolymers, ethylene glycol esters or alkoxylated fatty alcohols.

[0053] Wherein, the simple ester is pentaerythritol ester.

[0054] Wherein, the poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate.

[0055] The base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500.

[0056] A method for preparing silicon steel hot rolling oil containing metallic molybdenum comprises the following steps:

[0057] Step 1: Prepare raw materials according to the weight proportions of the following components: a) 1 to 10 parts of extreme pressure anti-wear agent; b) 0.01 to 1 part of anti-emulsifier; c) 15 to 30 parts of simple ester; d) 1 to 20 parts of poly fatty acid ester; e) 10 to 50 parts of base oil; wherein the extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1 to 2:1; wherein the anti-emulsifier is selected from at least two of propylene oxide copolymer, ethylene glycol ester or alkoxylated fatty alcohol; wherein the simple ester is selected from one of pentaerythritol ester or butyl oleate; wherein the poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate; wherein the base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500;

[0058] Step 2: 10 to 50 parts of base oil and 1 to 20 parts of polyfatty acid ester are sequentially added into a stirring blending kettle, and stirred at a constant temperature of 50 to 75° C. to obtain material 1;

[0059] Step 3: Add 1 to 10 parts of extreme pressure anti-wear agent to material 1, stir evenly, and obtain material 2;

[0060] Step 4: Add 0.01 to 1 parts of anti-emulsifier and 15 to 30 parts of simple ester to material 2 in sequence, stir and stop heating, gradually cool to room temperature, stop stirring, and obtain a hot rolling oil composition.

[0061] Embodiment three:

[0062] The present invention provides a silicon steel hot rolling oil containing metallic molybdenum, which is composed of the following components in parts by weight:

[0063] a) 1 to 10 parts of extreme pressure anti-wear agent;

[0064] b) 0.01 to 1 part of anti-emulsifier;

[0065] c) 15 to 30 parts of simple esters;

[0066] d) 1 to 20 parts of poly fatty acid ester;

[0067] e) 10 to 50 parts of base oil.

[0068] The extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1-2:1.

[0069] Wherein, the anti-emulsifier is selected from at least two of propylene oxide copolymers, ethylene glycol esters or alkoxylated fatty alcohols.

[0070] Wherein, the simple ester is selected from one of pentaerythritol ester and butyl oleate.

[0071] Wherein, the poly fatty acid ester is selected from butyl stearate or isobutyl oleate.

[0072] The base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500.

[0073] A method for preparing silicon steel hot rolling oil containing metallic molybdenum comprises the following steps:

[0074] Step 1: Prepare raw materials according to the weight proportions of the following components: a) 1 to 10 parts of extreme pressure anti-wear agent; b) 0.01 to 1 part of anti-emulsifier; c) 15 to 30 parts of simple ester; d) 1 to 20 parts of poly fatty acid ester; e) 10 to 50 parts of base oil; wherein the extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1 to 2:1; wherein the anti-emulsifier is selected from at least two of propylene oxide copolymer, ethylene glycol ester or alkoxylated fatty alcohol; wherein the simple ester is selected from one of pentaerythritol ester or butyl oleate; wherein the poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate; wherein the base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500;

[0075] Step 2: 10 to 50 parts of base oil and 1 to 20 parts of polyfatty acid ester are sequentially added into a stirring blending kettle, and stirred at a constant temperature of 50 to 75° C. to obtain material 1;

[0076] Step 3: Add 1 to 10 parts of extreme pressure anti-wear agent to material 1, stir evenly, and obtain material 2;

[0077] Step 4: Add 0.01 to 1 parts of anti-emulsifier and 15 to 30 parts of simple ester to material 2 in sequence, stir and stop heating, gradually cool to room temperature, stop stirring, and obtain a hot rolling oil composition.

[0078] Embodiment 4:

[0079] The present invention provides a silicon steel hot rolling oil containing metallic molybdenum, which is composed of the following components in parts by weight:

[0080] a) 1 to 10 parts of extreme pressure anti-wear agent;

[0081] b) 0.01 to 1 part of anti-emulsifier;

[0082] c) 15 to 30 parts of simple esters;

[0083] d) 1 to 20 parts of poly fatty acid ester;

[0084] e) 10 to 50 parts of base oil.

[0085] The extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1-2:1.

[0086] Wherein, the anti-emulsifier is selected from at least two of propylene oxide copolymers, ethylene glycol esters or alkoxylated fatty alcohols.

[0087] Wherein, the simple ester is selected from one of pentaerythritol ester and butyl oleate.

[0088] Wherein, the poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate.

[0089] Wherein, the base oil is selected from mineral oil, and the mineral oil is cycloalkane 150BS.

[0090] A method for preparing silicon steel hot rolling oil containing metallic molybdenum comprises the following steps:

[0091] Step 1: Prepare raw materials according to the weight proportions of the following components: a) 1 to 10 parts of extreme pressure anti-wear agent; b) 0.01 to 1 part of anti-emulsifier; c) 15 to 30 parts of simple ester; d) 1 to 20 parts of poly fatty acid ester; e) 10 to 50 parts of base oil; wherein the extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1 to 2:1; wherein the anti-emulsifier is selected from at least two of propylene oxide copolymer, ethylene glycol ester or alkoxylated fatty alcohol; wherein the simple ester is selected from one of pentaerythritol ester or butyl oleate; wherein the poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate; wherein the base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500;

[0092] Step 2: 10 to 50 parts of base oil and 1 to 20 parts of polyfatty acid ester are sequentially added into a stirring blending kettle, and stirred at a constant temperature of 50 to 75° C. to obtain material 1;

[0093] Step 3: Add 1 to 10 parts of extreme pressure anti-wear agent to material 1, stir evenly, and obtain material 2;

[0094] Step 4: Add 0.01 to 1 parts of anti-emulsifier and 15 to 30 parts of simple ester to material 2 in sequence, stir and stop heating, gradually cool to room temperature, stop stirring, and obtain a hot rolling oil composition.

[0095] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0096] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A silicon steel hot rolling oil containing metallic molybdenum, which is composed of the following components in parts by weight: a) 1 to 10 parts of extreme pressure anti-wear agent; b) 0.01 to 1 part of anti-emulsifier; c) 15 to 30 parts of simple esters; d) 1 to 20 parts of poly fatty acid ester; e) 10 to 50 parts of base oil.

2. The silicon steel hot rolling oil containing metallic molybdenum according to claim 1, characterized in that: The extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1-2:

1.

3. The silicon steel hot rolling oil containing metallic molybdenum according to claim 1, characterized in that: The anti-emulsifier is selected from at least two of propylene oxide copolymers, ethylene glycol esters or alkoxylated fatty alcohols.

4. The silicon steel hot rolling oil containing metallic molybdenum according to claim 1, characterized in that: The simple ester is selected from pentaerythritol ester or butyl oleate.

5. The silicon steel hot rolling oil containing metallic molybdenum according to claim 1, characterized in that: The poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate.

6. The silicon steel hot rolling oil containing metallic molybdenum according to claim 1, characterized in that: The base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500.

7. A method for preparing silicon steel hot rolling oil containing metallic molybdenum, comprising the following steps: Step 1: Prepare raw materials according to the weight proportions of the following components: a) 1 to 10 parts of extreme pressure anti-wear agent; b) 0.01 to 1 part of anti-emulsifier; c) 15 to 30 parts of simple ester; d) 1 to 20 parts of poly fatty acid ester; e) 10 to 50 parts of base oil; wherein the extreme pressure anti-wear agent is selected from a mixture of molybdenum disulfide and 2-ethylhexyl-molybdenum dithiophosphate, wherein the weight ratio of molybdenum disulfide to 2-ethylhexyl-molybdenum dithiophosphate is 0.1 to 2:1; wherein the anti-emulsifier is selected from at least two of propylene oxide copolymer, ethylene glycol ester or alkoxylated fatty alcohol; wherein the simple ester is selected from one of pentaerythritol ester or butyl oleate; wherein the poly fatty acid ester is selected from at least two of TMPTA, butyl stearate or isobutyl oleate; wherein the base oil is selected from at least one of mineral oil, vegetable oil or synthetic oil, and the mineral oil is at least one of cycloalkyl 150BS or HVI-500; Step 2: 10 to 50 parts of base oil and 1 to 20 parts of polyfatty acid ester are sequentially added into a stirring blending kettle, and stirred at a constant temperature of 50 to 75° C. to obtain material 1; Step 3: Add 1 to 10 parts of extreme pressure anti-wear agent to material 1, stir evenly, and obtain material 2; Step 4: Add 0.01 to 1 parts of anti-emulsifier and 15 to 30 parts of simple ester to material 2 in sequence, stir and stop heating, gradually cool to room temperature, stop stirring, and obtain a hot rolling oil composition.