A formulation for increasing the density of crystal dislocations in a friction surface in-line and a method for its preparation

Abstract

The application discloses a kind of preparation of online improving friction surface crystal dislocation density, comprising the following components: calcium carbonate whisker, calcium sulfate whisker, potassium titanate whisker, silicon nitride whisker, surface modifier, lubricating oil.The advantages of the application: under online conditions, add in the lubricating grease used in metal friction pair and bring into the friction surface of metal friction pair, improve the crystal dislocation density of the friction surface of metal friction pair, so that the comprehensive performance such as strength, hardness, elastic modulus, yield strength, fatigue resistance of the surface of metal friction pair is significantly improved;It does not need special equipment and operating personnel;The preparation of the application can work on the friction pair surface lubricated by the lubricating grease required by mechanical equipment, and is suitable for friction components with complex structure;It is completed under the condition of mechanical equipment itself running online, without additional processing energy consumption;It is convenient, simple and low in cost, greatly improves the application space, and has remarkable economic benefit and social benefit.

Description

Technical Field

[0001] This invention relates to a formulation for increasing the dislocation density of a friction surface online and its preparation method, specifically to a formulation for increasing the crystal dislocation density of a metal friction pair on the friction surface online and its preparation method, belonging to the field of metal surface deformation strengthening. Background Technology

[0002] Metal surface deformation strengthening is a method that utilizes mechanical energy to induce plastic deformation on the workpiece surface, thereby strengthening the surface. It is also known as surface deformation hardening. Essentially, metal surface deformation strengthening is achieved primarily through the movement of dislocations in the metal crystal, and is the most effective technical approach. During plastic deformation, the interaction between dislocations increases their density. As plastic deformation continues, the dislocation density further increases, causing grain boundaries to gradually disappear and recombine into new grain boundaries. This leads to grain fragmentation and refinement, significantly improving the surface hardness, strength, stress state, yield strength, and fatigue strength of the material. This results in excellent friction reduction, wear resistance, high strength, long service life, and reduced surface defects caused by machining. Surface deformation strengthening is mainly applied to machine parts manufactured from metals and their alloys.

[0003] Currently, representative companies selling shot peening, rolling, and extrusion processing equipment on the market include: Dongguan Yueqiang Machinery Technology Co., Ltd. and Jiangsu Dingjian Machinery Equipment Co., Ltd., which produce metal surface shot peening equipment; Shandong Huayun Electromechanical Technology Co., Ltd. and Shandong Kaize Hengxin Machinery Equipment Co., Ltd., which produce rolling-strengthening equipment for metal surfaces; and Shandong Juyineng Intelligent Technology Co., Ltd., which produces metal surface extrusion equipment. Additionally, Chinese patent CN201510507073 discloses an improved planar rolling method and apparatus. While these metal surface strengthening equipment or apparatuses have many advantages, they also have several shortcomings, as follows:

[0004] First, mechanical parts need to be pre-processed before assembly, requiring individually designed and manufactured pre-processing equipment based on the shape and requirements of the parts. Second, complex-shaped mechanical friction parts are difficult or impossible to process. Third, pre-processing requires high power consumption. Fourth, pre-processing can only be done offline, not online. These technical shortcomings increase processing costs, limit the scope of application, and hinder widespread adoption. Application is limited to high-value equipment parts in sectors such as aviation, with limited use in other equipment parts. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an online formulation for increasing the dislocation density of crystals on friction surfaces and its preparation method, thereby overcoming the shortcomings of existing shot peening, rolling and extrusion metal surface deformation strengthening technologies, such as the need for separate pretreatment of parts (offline processing) and the need for separate design and manufacture of special equipment, the difficulty or inability to process complex, small and high-precision mechanical parts, the need for high processing energy consumption and the inability to process online.

[0006] The present invention is achieved by the following scheme: an online preparation for increasing the dislocation density of crystals on a friction surface, comprising the following components in parts by weight: 40-50 parts of calcium carbonate whiskers, 30-40 parts of calcium sulfate whiskers, 25-35 parts of potassium titanate whiskers, 1-3 parts of silicon nitride whiskers, 0.5-1 parts of surface modifier, and 100-150 parts of lubricating oil.

[0007] The surface modifier is a silane coupling agent.

[0008] The lubricating oil is either a mineral base oil or a polyalphaolefin synthetic base oil.

[0009] The particle size of the calcium carbonate whiskers is D90≤0.5μm, the particle size of the calcium sulfate whiskers is D90≤0.3μm, the particle size of the potassium titanate whiskers is D90≤0.1μm, and the particle size of the silicon nitride whiskers is D90≤0.1μm.

[0010] The calcium carbonate whiskers have a particle size of D90≤0.7μm, the calcium sulfate whiskers have a particle size of D90≤0.5μm, the potassium titanate whiskers have a particle size of D90≤0.3μm, and the silicon nitride whiskers have a particle size of D90≤0.07μm.

[0011] A method for preparing an agent that increases the dislocation density of crystals on a friction surface online, comprising the following steps:

[0012] Step 1: Weigh out the following components according to the following weights: 40-50 parts calcium carbonate whiskers, 30-40 parts calcium sulfate whiskers, 25-35 parts potassium titanate whiskers, 1-3 parts silicon nitride whiskers, 0.5-1 part surface modifier, and 100-150 parts lubricating oil. Set aside for later use.

[0013] Step 2: Wet the calcium carbonate whiskers, calcium sulfate whiskers, potassium titanate whiskers and silicon nitride whiskers with ethanol and modify them with silane coupling agent.

[0014] Step 3: Place the modified whiskers from Step 2 into a mixer and stir, then dry them;

[0015] Step 4: Place the dried and modified whiskers into a magnetic stirrer, add mineral-based lubricating oil or α-olefin synthetic base oil, and stir to obtain a formulation that improves the strength of crystal dislocations on the friction surface online.

[0016] The purity of the ethanol is 95%.

[0017] In step two, the total weight of whiskers: the weight of ethanol: the weight of silane coupling agent = 1:3:0.5.

[0018] In step two, the modified whiskers are placed in a mixer and stirred for 30 minutes. Then the mixture is placed in a drying oven and kept at 30-80°C for 20-100 minutes. In step four, the stirring time is 180 minutes.

[0019] In step two, the modified whiskers are placed in a mixer and stirred for 30 minutes. The mixture is then placed in a drying oven and kept at 35-75°C for 25-90 minutes.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. Under the operating conditions of mechanical equipment (online), the preparation of the present invention is added to the lubricating grease used in metal friction pairs and carried into the friction surface of the metal friction pairs. Whiskers of different particle sizes enter the friction pairs with different gaps. Under the high pressure and high shear pressure generated between the friction pairs, the metal friction surface undergoes slight plastic deformation, and dislocations in the crystals begin to emerge. As the working time of the friction pair increases, under the repeated action of the whiskers on the metal surface, the dislocation behavior of the crystals also proceeds, and the dislocation strength of the crystals continuously increases, which significantly improves the comprehensive properties of the metal friction pair surface, such as strength, hardness, elastic modulus, yield strength, and fatigue resistance.

[0022] 2. This invention does not require specialized equipment or operators;

[0023] 3. The formulation of this invention will work on all friction surfaces that can be lubricated by the lubricating grease required by the mechanical equipment, and is applicable to friction components with complex structures.

[0024] 4. This invention utilizes the mechanical equipment's own operating conditions to complete the process offline, eliminating the need for additional processing energy consumption; it is convenient, simple, and low-cost, greatly expanding the application scope of this invention and resulting in significant economic and social benefits.

[0025] 5. The whiskers of various components in the formulation of this invention have different high elastic moduli and high strength, and the particle size is gradient-distributed, which can cover most of the static and dynamic fit gaps of the friction pair. Attached Figure Description

[0026] Figure 1 SEM image of the inner raceway friction surface of the bearing outer ring using the formulation of the present invention.

[0027] Figure 2 This is a SEM image of the inner raceway friction surface of the outer ring of a bearing that has not been treated with the formulation of this invention. Detailed Implementation

[0028] The following is combined Figure 1-2 The present invention will be further described, but the scope of protection of the present invention is not limited to the contents described herein.

[0029] For clarity, not all features of the actual embodiments will be described. In the following description, well-known functions and structures will not be described in detail, as they would confuse the invention with unnecessary details. It should be understood that in the development of any actual embodiment, a great deal of implementation detail must be made to achieve the developer’s specific goals, such as changing one embodiment to another according to the limitations of the system or business. In addition, it should be understood that such development work may be complex and time-consuming, but is merely routine work for those skilled in the art.

[0030] Example 1:

[0031] 1) Weigh the following components according to the following weight ratios: 40 parts of calcium carbonate whiskers with a particle size of D90≤0.5μm, 30 parts of calcium sulfate whiskers with a particle size of D90≤0.3μm, 25 parts of potassium titanate whiskers with a particle size of D90≤0.1μm, 1 part of silicon nitride whiskers with a particle size of D90≤0.1μm, 0.5 parts of surface modifier, and 100 parts of mineral base lubricating oil.

[0032] 2) The whiskers of the above components were moistened with 95% pure ethanol and modified with silane coupling agent (total weight of whiskers: weight of ethanol: silane coupling agent = 1:3:0.5), and then placed in a mixer and stirred for 30 minutes. The mixture was then placed in a drying oven and kept at 30°C for 20 minutes.

[0033] 3) Place the dried and modified whiskers into a magnetic stirrer, add mineral-based lubricating oil, and stir for 180 minutes to finally obtain Example 1 of the present invention, a formulation for improving the strength of crystal dislocations on a friction surface online.

[0034] Example 2:

[0035] 1) Weigh the following components according to the following weight ratios: 45 parts of calcium carbonate whiskers with a particle size of D90≤0.5μm, 35 parts of calcium sulfate whiskers with a particle size of D90≤0.3μm, 30 parts of potassium titanate whiskers with a particle size of D90≤0.1μm, 1.5 parts of silicon nitride whiskers with a particle size of D90≤0.1μm, 0.8 parts of surface modifier, and 115 parts of mineral base lubricating oil.

[0036] 2) The whiskers of the above components were moistened with 95% pure ethanol and modified with silane coupling agent (total weight of whiskers: weight of ethanol: silane coupling agent = 1:3:0.5), and then placed in a mixer and stirred for 30 minutes. The mixture was then placed in a drying oven and kept at 75°C for 90 minutes.

[0037] 3) Place the dried and modified whiskers into a magnetic stirrer, add mineral-based lubricating oil, and stir for 180 minutes to finally obtain Example 1 of the present invention, a formulation for improving the strength of crystal dislocations on a friction surface online.

[0038] Example 3:

[0039] 1) Weigh the following components according to the following weight ratios: 50 parts of calcium carbonate whiskers with a particle size of D90≤0.5μm, 40 parts of calcium sulfate whiskers with a particle size of D90≤0.3μm, 35 parts of potassium titanate whiskers with a particle size of D90≤0.1μm, 3 parts of silicon nitride whiskers with a particle size of D90≤0.1μm, 1 part of surface modifier, and 150 parts of α-olefin synthetic base oil.

[0040] 2) The whiskers of the above components were moistened with 95% pure ethanol and modified with silane coupling agent (total weight of whiskers: weight of ethanol: silane coupling agent = 1:3:0.5), and then placed in a mixer and stirred for 30 minutes. The mixture was then placed in a drying oven and kept at 80°C for 100 minutes.

[0041] 3) Place the dried and modified whiskers into a magnetic stirrer, add α-olefin synthesis base oil, and stir for 180 minutes to finally obtain Example 1 of the present invention, a formulation for improving the strength of crystal dislocations on a friction surface online.

[0042] Example 4:

[0043] 1) Weigh the following components according to the following weight ratios: 43 parts of calcium carbonate whiskers with a particle size of D90≤0.7μm, 33 parts of calcium sulfate whiskers with a particle size of D90≤0.5μm, 28 parts of potassium titanate whiskers with a particle size of D90≤0.3μm, 1.3 parts of silicon nitride whiskers with a particle size of D90≤0.07μm, 0.7 parts of surface modifier, and 110 parts of α-olefin synthetic base oil.

[0044] 2) The whiskers of the above components were moistened with 95% pure ethanol and modified with silane coupling agent (total weight of whiskers: weight of ethanol: silane coupling agent = 1:3:0.5), and then placed in a mixer and stirred for 30 minutes. The mixture was then placed in a drying oven and kept at 40°C for 50 minutes.

[0045] 3) Place the dried and modified whiskers into a magnetic stirrer, add α-olefin synthetic base oil, and stir for 180 minutes to finally obtain Example 2 of the present invention, a formulation for improving the strength of crystal dislocations on a friction surface online.

[0046] Example 5:

[0047] 1) Weigh the following components by weight percentage: 45 parts of calcium carbonate whiskers with a particle size of D90≤0.5μm, 35 parts of calcium sulfate whiskers with a particle size of D90≤0.3μm, 30 parts of potassium titanate whiskers with a particle size of D90≤0.1μm, 1.5 parts of silicon nitride whiskers with a particle size of D90≤0.1μm, 0.8 parts of surface modifier, and 115 parts of mineral base lubricating oil.

[0048] 2) The whiskers of the above components were moistened with 95% pure ethanol and modified with silane coupling agent (total weight of whiskers: weight of ethanol: silane coupling agent = 1:3:0.5), and then placed in a mixer and stirred for 30 minutes. The mixture was then placed in a drying oven and kept at 45°C for 60 minutes.

[0049] 3) Place the dried and modified whiskers into a magnetic stirrer, add mineral-based lubricating oil, and stir for 180 minutes to finally obtain Example 3 of the present invention, a formulation for improving the strength of crystal dislocations on a friction surface online.

[0050] Example 6:

[0051] 1) Weigh the following components by weight percentage: 47 parts of calcium carbonate whiskers with a particle size of D90≤0.7μm, 37 parts of calcium sulfate whiskers with a particle size of D90≤0.5μm, 33 parts of potassium titanate whiskers with a particle size of D90≤0.3μm, 1.7 parts of silicon nitride whiskers with a particle size of D90≤0.07μm, 0.9 parts of surface modifier, and 120 parts of α-olefin synthetic base oil.

[0052] 2) The whiskers of the above components were moistened with 95% pure ethanol and modified with silane coupling agent (total weight of whiskers: weight of ethanol: silane coupling agent = 1:3:0.5), and then placed in a mixer and stirred for 30 minutes. The mixture was then placed in a drying oven and kept at 50°C for 70 minutes.

[0053] 3) The dried and modified whiskers were placed in a magnetic stirrer and α-olefin synthetic base oil was added and stirred for 180 minutes to finally obtain Example 4 of the present invention, a formulation for improving the strength of crystal dislocations on a friction surface online.

[0054] Example 7:

[0055] 1) Weigh the following components by weight percentage: 48 parts of calcium carbonate whiskers with a particle size of D90≤0.5μm, 39 parts of calcium sulfate whiskers with a particle size of D90≤0.3μm, 34 parts of potassium titanate whiskers with a particle size of D90≤0.1μm, 2.5 parts of silicon nitride whiskers with a particle size of D90≤0.1μm, 0.95 parts of surface modifier, and 130 parts of mineral base lubricating oil.

[0056] 2) The whiskers of the above components were moistened with 95% pure ethanol and modified with silane coupling agent (total weight of whiskers: weight of ethanol: silane coupling agent = 1:3:0.5), and then placed in a mixer and stirred for 30 minutes. The mixture was then placed in a drying oven and kept at 60°C for 80 minutes.

[0057] 3) Place the dried and modified whiskers into a magnetic stirrer, add mineral-based lubricating oil, and stir for 180 minutes to finally obtain Example 5 of the present invention, a formulation for improving the strength of crystal dislocations on a friction surface online.

[0058] The applicant applied the formulation prepared according to the method described in Example 1 to the gasoline engine of a taxi, model EA211-CKA. It was added to the engine lubricating oil (engine mineral lubricating oil) at 1% of the engine lubricating oil weight ratio through the engine lubricating oil filler port. After the taxi had accumulated 50,000 kilometers of driving, the engine's cylinder bore (#1) was disassembled and measured. The diameter at the bottom dead center (BDC) was the same as the original cylinder bore size, 74.5 ± 0.02 mm. This indicates that after applying the formulation of Example 1 of this invention, the engine did not experience any wear after accumulating 50,000 kilometers of driving, demonstrating that the engine cylinder friction surface was sufficiently strengthened and exhibited excellent wear resistance.

[0059] The applicant applied the formulation prepared according to the method described in Example 2 to the speed increaser gearbox of a 1.5 MW wind turbine, adding it to the gearbox lubricating oil at a weight ratio of 0.5%. After a cumulative operation of 6 months, the gearbox inspection port was opened to observe the condition of the friction tooth surfaces. It was found that the surface smoothness of the teeth was significantly improved, and the original pitting on the tooth surfaces had basically disappeared. Inspection of the speed increaser gearbox of a nearby wind turbine showed that the surface roughness of the friction tooth surfaces was lower than 6 months prior, and the area of ​​pitting had increased. The wind farm maintenance department highly approves of the effectiveness of this formulation.

[0060] The applicant applied the formulation prepared according to the method described in Example 3 to a 7205 bearing and conducted a comparative strengthening test on a bearing bench testing machine. The purpose was to shorten the comparative test time and examine the friction performance of the inner and outer rolling surfaces and rolling elements of the bearing. The load was twice the rated load, and the speed was 100% of the rated speed. The bearing without the formulation of Example 3 of this invention experienced sticking and jamming of the inner and outer rolling elements after 28 hours and 32 minutes of continuous operation, and the test was stopped. The bearing with the formulation of Example 3 of this invention experienced sintering and jamming of the inner and outer rolling elements after 45 hours and 12 minutes of continuous operation, and the test was stopped. The comparative strengthening test on the bearing bench demonstrates that the formulation of this invention significantly improves the overall performance of the bearing, including the strength and hardness of the inner and outer rolling surface and rolling elements, increasing the bearing life by 58.4%.

[0061] The applicant applied the formulation prepared according to the method described in Example 4 to a 10PA20C140 automotive air conditioning compressor. This compressor had been in operation for many years, resulting in a significant decrease in cooling efficiency. When the air conditioning was operating at the second setting, the outdoor ambient temperature was 33°C while the interior temperature was only 28°C, a temperature difference of only 5°C, leading to extremely poor cabin comfort. By mixing 2ml of the formulation from Example 4 with 10ml of refrigeration compressor oil and then adding it to the compressor's refrigerant system, after driving a cumulative 200km, under the same conditions, the interior temperature was 24°C, a temperature difference of 9°C, a decrease of 4°C compared to before the addition of the material. This indicates a significant increase in the power of the automotive air conditioning compressor and a significant decrease in the compressor's internal frictional resistance.

[0062] The applicant applied the formulation prepared according to the method described in Example 5 to the guide rail of a C6140C lathe. This lathe had been in use for over 20 years, and the surface roughness Ra of the bed guide rail was 0.6 μm, severely affecting the precision of machined parts. 100 ml of the formulation from Example 5 was homogenized with 500 ml of lathe guide rail oil. Then, 50 ml was added to the guide rail every hour of operation. After 12 additions, the surface roughness Ra of the guide rail was measured to be 0.3 μm, representing a 50% reduction in surface roughness and a significant improvement in the machining precision of the lathe.

[0063] The applicant applied the formulation prepared according to the method described in Example 6 to a M-340 / 33 type 780-K-1104B carbon monoxide reciprocating gas compressor.

[0064] From 0:00 to 15:00 on August 20, 2023, the system operated for a total of 16 hours. The average current per hour was 1114.375A, and the average exhaust pressure of the fourth stage was 1.268Mpa. These data were used as comparison data before the test.

[0065] From 16:00 on August 20, 2023 to 10:00 on August 22, 2023, after the addition of materials, the compressor ran for a total of 43 hours, with an average current of 114.953A per hour and a fourth-stage discharge pressure of 1.268 MPa. The compressor is a M-340 / 33 type 780-K-1104B carbon monoxide reciprocating gas compressor.

[0066] Energy consumption changes before and after applying Embodiment 6 of the present invention

[0067]

[0068] By comparing the data before and after the online application of Embodiment 4 of the present invention in a carbon monoxide compressor, under the same average pressure of the four stages of the compressor, the energy saving of the carbon monoxide compressor decreased by 4.909%, and the energy saving and carbon reduction effects were obvious, with significant social and economic benefits.

[0069] The applicant applied the formulation prepared according to the method described in Example 7 to a bearing of model number 2308K to observe whether a high dislocation density layer was formed on the bearing friction surface. Two sets of new 2308K bearings, one without the formulation of this invention and one with the formulation of this invention, were compared under the same working conditions on a friction testing machine. Each set was run for 20 hours on the bearing testing machine at a speed of 1500 r / min and a load of 100%. After operation, the bearings were disassembled, and the cross-sectional morphology of the inner raceway friction surface of the outer ring was observed using an electron microscope. After 20 hours of operation, the two sets of bearings were disassembled, and SEM electron microscopy was performed on the inner raceway area of ​​the outer ring of the two sets of bearings according to standards. SEM electron microscopy observation showed that no high dislocation density layer was observed on the inner raceway surface cross-section of the model number 2308K bearing without the formulation of this invention. Figure 2 As shown. In the model where the formulation of this invention has been applied, a high dislocation density layer, approximately 14 μm in size, is clearly visible on the surface cross-section after rolling to the outer ring of the 2308K model. Figure 1 As shown.

[0070] Initially, whiskers possess high elastic modulus and high strength. Under high contact pressure and shear pressure of the friction pair, they do not deform or break down, maintaining their physicochemical state. As the crystal density on the surface of the metal friction pair increases, the strength and elastic modulus of the metal friction surface increase significantly. At this point, the metal surface is close to the excellent comprehensive properties of whiskers, such as high strength and high elastic modulus. In some cases, the metal crystal structure on the friction surface of the metal friction pair even transforms into amorphous. Whiskers repeatedly enter the metal friction surface that already has a high density of crystalline dislocations. Under high contact pressure and shear pressure, structural failure will occur, negating the function of increasing the crystalline dislocation density of the metal friction surface.

[0071] Analysis of crystal theory strength shows that the lower the dislocation density in a real crystal, the higher its strength. The fact that cold-worked metals have significantly higher strength than annealed metals further suggests that higher dislocation density equates to higher crystal strength. The relationship between dislocation density and crystal strength is necessarily a U-shaped curve. When the dislocation density is low, the crystal strength τc decreases with increasing density p; conversely, when the dislocation density is high, τc increases with increasing p. Therefore, in practical engineering, to obtain the highest strength, two opposite approaches can be taken: either minimize the dislocation density or maximize it. An example of the former is whiskers, and an example of the latter is amorphous materials. Whiskers are extremely fine single crystals, thus essentially free of dislocations and other crystal defects, resulting in strengths several orders of magnitude higher than bulk materials. However, it is currently unrealistic to produce defect-free bulk metal materials at current industrial levels. Therefore, this invention employs another approach: introducing high-density dislocations into the crystals on the surface of the metal friction pair, i.e., a dislocation strengthening mechanism. Amorphous materials can be considered as materials with extremely high dislocation density in crystals, and therefore have very high strength and excellent comprehensive properties.

[0072] Although the technical solutions of the present invention have been described and enumerated in detail, it should be understood that modifications to the above embodiments or the adoption of equivalent alternatives are obvious to those skilled in the art. Such modifications or improvements made without departing from the spirit of the present invention are all within the scope of protection claimed by the present invention.

Claims

1. An agent for increasing the density of crystal dislocations in a friction surface in-line, characterized in that, The product comprises the following components in parts by weight: 40-50 parts calcium carbonate whiskers, 30-40 parts calcium sulfate whiskers, 25-35 parts potassium titanate whiskers, 1-3 parts silicon nitride whiskers, 0.5-1 part surface modifier, and 100-150 parts lubricating oil. The surface modifier is a silane coupling agent, and the lubricating oil is one of mineral base oil or polyalphaolefin synthetic base oil.

2. The formulation for increasing the dislocation density of a friction surface online according to claim 1, characterized in that, The particle size of the calcium carbonate whiskers is D90≤0.5µm, the particle size of the calcium sulfate whiskers is D90≤0.3µm, the particle size of the potassium titanate whiskers is D90≤0.1µm, and the particle size of the silicon nitride whiskers is D90≤0.1µm.

3. The formulation for increasing the dislocation density of a friction surface online according to claim 1, characterized in that, The particle size of the calcium carbonate whiskers is D90≤0.7µm, the particle size of the calcium sulfate whiskers is D90≤0.5µm, the particle size of the potassium titanate whiskers is D90≤0.3µm, and the particle size of the silicon nitride whiskers is D90≤0.07µm.

4. A method for preparing an agent that improves the dislocation density of a friction surface online, characterized in that: Follow these steps: Step 1: Weigh out each component according to the following weights: 40-50 parts calcium carbonate whiskers, 30-40 parts calcium sulfate whiskers, 25-35 parts potassium titanate whiskers, 1-3 parts silicon nitride whiskers, 0.5-1 part surface modifier, and 100-150 parts lubricating oil. Set aside for later use. The surface modifier is a silane coupling agent. Step 2: Wet the calcium carbonate whiskers, calcium sulfate whiskers, potassium titanate whiskers and silicon nitride whiskers with ethanol and modify them with silane coupling agent. Step 3: Place the modified whiskers from Step 2 into a mixer and stir, then dry them; Step 4: Place the dried and modified whiskers into a magnetic stirrer, add mineral-based lubricating oil or polyalphaolefin synthetic base oil, and stir to obtain a formulation that improves the dislocation density of crystals on the friction surface online.

5. The method for preparing an agent for increasing the dislocation density of a friction surface online according to claim 4, characterized in that: The purity of the ethanol is 95%.

6. The method for preparing an agent for increasing the dislocation density of a friction surface online according to claim 4, characterized in that: In step two, the modified whiskers are placed in a mixer and stirred for 30 minutes. Then the mixture is placed in a drying oven and kept at 30-80°C for 20-100 minutes. In step four, the stirring time is 180 minutes.

7. The method for preparing an agent for increasing the dislocation density of a friction surface online according to claim 4, characterized in that: In step two, the modified whiskers are placed in a mixer and stirred for 30 minutes. The mixture is then placed in a drying oven and kept at 35-75°C for 25-90 minutes.

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