CN111607447A - Metal wear-resistant repair lubricating grease and preparation method thereof - Google Patents
Metal wear-resistant repair lubricating grease and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/26—Compounds containing silicon or boron, e.g. silica, sand
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/085—Phosphorus oxides, acids or salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
- C10M2201/102—Silicates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
- C10M2201/105—Silica
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Abstract
The invention discloses metal anti-wear repairing lubricating grease which consists of base lubricating grease and an anti-wear repairing agent, wherein the mass ratio of the base lubricating grease to the anti-wear repairing agent is 100: 1-10; the antiwear restoration agent comprises the following components in percentage by weight: 37-45.0% of silicon dioxide, 40-46% of magnesium oxide, 0.8-1.5% of aluminum oxide, 0.5-0.8% of calcium oxide, 0.25-0.4% of potassium oxide, 0.28-0.4% of manganese oxide, 0.2-0.3% of ferrous oxide, 0.05-0.01% of phosphorus pentoxide, 5.19-20.82% of positive ion water and 0.1-0.4% of negative ion water. The preparation method comprises the following steps: stirring and heating the base lubricating grease to 70-80 ℃, adding the prepared anti-wear repairing agent into the base lubricating grease for three times at an interval of 15-35 minutes each time, continuing to keep the temperature and stir for 60-90 minutes after the addition is finished, cooling to room temperature, and continuing to stir for 12-18 hours.
Description
Technical Field
The invention relates to the technical field of metal surface nanocrystallization, in particular to metal anti-wear repair lubricating grease and a preparation method thereof.
Background
The metal surface nanocrystallization is to refine surface grains of the material to a nanometer level by various physical or chemical methods to prepare a surface layer with a nanometer structure with a certain depth, but the matrix still keeps the original coarse grain state, so as to improve and enhance the surface properties of the metal material, such as fatigue strength, stress corrosion resistance, wear resistance and the like. The hardness of the surface layer of the metal surface nano structure is obviously improved, and the hardness of a sub-micron crystal layer below the surface is also obviously improved. The toughness of the metal material is not obviously reduced while the surface integrity performance of the metal material is improved, and the performances of fatigue resistance, wear resistance, corrosion resistance and the like of mechanical parts are effectively improved, so that the safe and stable operation of mechanical equipment is ensured, the effective service life of the mechanical equipment is prolonged, and the method has important economic and practical values and very wide application prospects.
The existing mainstream similar technology is a natural ore powder grinding technology, and because the machine processing grinding production speed is low and the purity is unstable, the machine processing grinding production speed is low, only the ore powder is ground to nano-grade particles, and effective activating substances cannot be found out, so that the effect can be generated only by applying the method under a specific working condition, but the effect is unstable, and the generated metal ceramic repairing layer has a low application effect and high cost.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide metal anti-wear repair lubricating grease and a preparation method thereof, so as to solve the problems in the background art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides metal anti-wear repairing lubricating grease which consists of base lubricating grease and an anti-wear repairing agent, wherein the mass ratio of the base lubricating grease to the anti-wear repairing agent is 100: 1-10;
the antiwear restoration agent comprises the following components in percentage by weight:
37-45.0% of silicon dioxide, 40-46% of magnesium oxide, 0.8-1.5% of aluminum oxide, 0.5-0.8% of calcium oxide, 0.25-0.4% of potassium oxide, 0.28-0.4% of manganese oxide, 0.2-0.3% of ferrous oxide, 0.05-0.01% of phosphorus pentoxide, 5.19-20.82% of positive ion water and 0.1-0.4% of negative ion water.
The metal anti-wear repairing lubricating grease consists of base lubricating grease and an anti-wear repairing agent, wherein the mass ratio of the base lubricating grease to the anti-wear repairing agent is 100: 3;
the antiwear restoration agent comprises the following components in percentage by weight:
43.49% of silicon dioxide, 41.0% of magnesium oxide, 1.18% of aluminum oxide, 0.64% of calcium oxide, 0.33% of potassium oxide, 0.32% of manganese oxide, 0.25% of ferrous oxide, 0.085% of phosphorus pentoxide, 12.37% of positive ion water and 0.29% of negative ion water.
The metal anti-wear repairing lubricating grease consists of base lubricating grease and an anti-wear repairing agent, wherein the mass ratio of the base lubricating grease to the anti-wear repairing agent is 100: 1;
the antiwear restoration agent comprises the following components in percentage by weight:
37% of silicon dioxide, 40% of magnesium oxide, 0.8% of aluminum oxide, 0.5% of calcium oxide, 0.25% of potassium oxide, 0.28% of manganese oxide, 0.2% of ferrous oxide, 0.05% of phosphorus pentoxide, 20.82% of positive ion water and 0.1% of negative ion water.
The metal anti-wear repairing lubricating grease consists of base lubricating grease and an anti-wear repairing agent, wherein the mass ratio of the base lubricating grease to the anti-wear repairing agent is 10: 1;
the antiwear restoration agent comprises the following components in percentage by weight:
45.0% of silicon dioxide, 46% of magnesium oxide, 1.5% of aluminum oxide, 0.8% of calcium oxide, 0.4% of potassium oxide, 0.4% of manganese oxide, 0.3% of ferrous oxide, 0.01% of phosphorus pentoxide, 5.19% of positive ion water and 0.4% of negative ion water.
Preferably, the silicon dioxide, the magnesium oxide, the aluminum oxide, the calcium oxide, the potassium oxide, the manganese oxide, the ferrous oxide and the phosphorus pentoxide are all nano-scale particles.
Preferably, the particle size of the silicon dioxide, magnesium oxide, aluminum oxide, calcium oxide, potassium oxide, manganese oxide, ferrous oxide and phosphorus pentoxide is 50-100 nm. The micro-nano powder in the particle size range can greatly improve the lubricating property and effectively improve the bearing capacity of the friction pair.
The preparation method of the antiwear restoration agent comprises the following steps:
the method comprises the following steps: respectively ball-milling silicon dioxide and magnesium oxide by using a ball mill, then putting the ball-milled silicon dioxide and magnesium oxide into liquid for separation, and screening out silicon oxide and magnesium oxide with the particle size of 50-100 nm;
step two: treating potassium oxide and phosphorus pentoxide by using a surface modifier, and mixing with silicon dioxide and magnesium oxide to obtain a mixture a.
Step three: and (3) subjecting the mixture a to certain normal pressure and shearing force in a ball mill, and removing the surface modifier of potassium oxide and phosphorus pentoxide by using the instantaneous high temperature generated by the high-pressure contact zone to perform chemical reaction to obtain a mixture b.
Step four: the mixture b generates microscopic explosion in a microscopic high-pressure contact area to form microscopic high-pressure vacuum, silicon dioxide, magnesium oxide and other trace elements in the mixture b act in the environment to instantly synthesize magnesium hydroxy silicate, and phosphate glass (Grignard salt) is generated under the cooling function of lubricating oil.
Step five: ball milling the alumina, calcium oxide, manganese oxide and ferrous oxide with a ball mill, separating with liquid, and screening to obtain mixture c with particle size of 50-100 nm.
Step six: and c, mixing the mixture c, the substances obtained in the step four, the positive ion water, the negative ion water and a small amount of catalyst for reaction, and finally obtaining the anti-wear repairing agent.
Preferably, the liquid in the first step and the fifth step is water, oil or the like which does not react with silicon oxide and magnesium oxide.
The preparation method of the metal anti-wear repair lubricating grease comprises the following steps:
stirring and heating the base lubricating grease to 70-80 ℃, adding the prepared anti-wear repairing agent into the base lubricating grease for three times at an interval of 15-35 minutes each time, continuing to keep the temperature and stir for 60-90 minutes after the addition is finished, cooling to room temperature, and continuing to stir for 12-18 hours.
The invention has the beneficial effects that:
(1) according to the invention, through a synthetic deoxidation method, the metal hydroxysilicate powder is artificially prepared, particles with the particle size of less than 0.1 micron can be obtained through processing, molecular chains are introduced into the surface of the powder to improve the anti-agglomeration performance of the powder, short chains are used for connecting active substances to ensure stability, and meanwhile, in order to prevent the activity of the powder from losing efficacy, a molecular protective layer is covered outside the short chains formed by each active substance. Then adding a catalyst to quickly form a metal modified layer on the surface of the metal friction pair so as to achieve the effects of repairing, reducing the friction coefficient, prolonging the service life and reducing the energy consumption. The present invention relates to a metal wear-resisting repairing lubricating grease, which is mainly characterized by that a wear-resisting ceramic protective layer is formed on the friction surface of bearing, and its principle is that the friction flash temperature, activating agent and carbon in oil liquor are microscopically sintered on the surface of friction pair to form the wear-resisting ceramic protective layer.
(2) The metal anti-wear repair lubricating grease repairs the worn part under the normal working condition of a machine.
(3) The metal anti-wear repair lubricating grease can selectively compensate surface wear, and the thickness of the wear-resistant ceramic protective layer is in direct proportion to the amount of the grease and can be adjusted.
(4) The wear-resistant ceramic protective layer has no obvious interface with the original metal surface.
(5) The wear-resistant ceramic protective layer reduces the friction coefficient by an order of magnitude compared with the lubrication of an oil film.
(6) The wear-resistant ceramic protective layer has good wear resistance and corrosion resistance.
(7) The wear-resistant ceramic protective layer can compensate gaps, so that parts can restore to original shapes, and fit gaps can be optimized.
(8) The invention can prolong the service life of the bearing by more than 8K, and after the bearing runs for 1500h, the tooth clearance dispersion is smaller, the friction coefficient is reduced by about 50%, the energy consumption of the bearing is reduced by more than 5%, and the product can be directly applied to a lubricating system, is convenient to use, has no pollution and is harmless to equipment.
(9) In the formula of the metal anti-wear repair lubricating grease, the nano-scale micro-particles are adopted, so that the lubricating performance can be greatly improved, on one hand, the nano-particles can generate a micro-bearing effect when parts move relatively due to extremely small size and similar round shape, and the sliding friction is changed into sliding and rolling composite friction, so that the friction is reduced; on the other hand, the nanometer particles have high surface energy and can be adsorbed on the surface of metal to form an adsorption film, and the nanometer particles penetrate into the surface of the material along with the increase of the temperature during movement, so that the hardness of the material is greatly improved, and the wear resistance is greatly enhanced; meanwhile, the particle size is very small and is far smaller than the grinding mark generated by the surface abrasion of the friction pair, so that the grinding mark on the metal surface can be filled, the function of repairing the damage is achieved, and the surface of the damaged part is self-repaired.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a comparison of the average friction coefficients of an experimental group and a control group at the same operating frequency and different operating durations;
FIG. 2 is a comparison of the wear of the experimental group and the control group at the same operating frequency and different operating durations;
FIG. 3 is a comparison of friction rates of an experimental group and a control group at the same operating frequency and different operating durations;
FIG. 4 is a comparison of the wear marks of the experimental group and the control group at the same working frequency and different working durations;
FIG. 5 is a comparison of the average friction coefficients of the experimental group and the control group at the same working distance and different working frequencies;
FIG. 6 is a comparison of the wear of the experimental group and the control group at the same working distance and different working frequencies;
FIG. 7 is a comparison of friction rates of an experimental group and a control group at the same working distance and different working frequencies;
FIG. 8 is a comparison of the wear scar of the experimental group and the control group at the same working distance and different working frequencies.
Detailed Description
Example 1
The metal anti-wear repairing lubricating grease consists of base lubricating grease and an anti-wear repairing agent, wherein the mass ratio of the base lubricating grease to the anti-wear repairing agent is 100: 3;
the antiwear restoration agent comprises the following components in percentage by weight:
43.49% of silicon dioxide, 41.0% of magnesium oxide, 1.18% of aluminum oxide, 0.64% of calcium oxide, 0.33% of potassium oxide, 0.32% of manganese oxide, 0.25% of ferrous oxide, 0.085% of phosphorus pentoxide, 12.37% of positive ion water and 0.29% of negative ion water.
The particle size of the silicon dioxide, the magnesium oxide, the aluminum oxide, the calcium oxide, the potassium oxide, the manganese oxide, the ferrous oxide and the phosphorus pentoxide is 50-100 nm. The micro-nano powder in the particle size range can greatly improve the lubricating property and effectively improve the bearing capacity of the friction pair.
The preparation method of the antiwear restoration agent comprises the following steps:
the method comprises the following steps: respectively ball-milling silicon dioxide and magnesium oxide by using a ball mill, then putting the ball-milled silicon dioxide and magnesium oxide into liquid for separation, and screening out silicon oxide and magnesium oxide with the particle size of 50-100 nm;
step two: treating potassium oxide and phosphorus pentoxide by using a surface modifier, and mixing with silicon dioxide and magnesium oxide to obtain a mixture a.
Step three: and (3) subjecting the mixture a to certain normal pressure and shearing force in a ball mill, and removing the surface modifier of potassium oxide and phosphorus pentoxide by using the instantaneous high temperature generated by the high-pressure contact zone to perform chemical reaction to obtain a mixture b.
Step four: the mixture b generates microscopic explosion in a microscopic high-pressure contact area to form microscopic high-pressure vacuum, silicon dioxide, magnesium oxide and other trace elements in the mixture b act in the environment to instantly synthesize magnesium hydroxy silicate, and phosphate glass (Grignard salt) is generated under the cooling function of lubricating oil.
Step five: ball milling the alumina, calcium oxide, manganese oxide and ferrous oxide with a ball mill, separating with liquid, and screening to obtain mixture c with particle size of 50-100 nm.
Step six: and c, mixing the mixture c, the substances obtained in the step four, the positive ion water, the negative ion water and a small amount of catalyst for reaction, and finally obtaining the anti-wear repairing agent.
The liquid in the first step and the fifth step is water or oil or other liquid which does not react with silicon oxide and magnesium oxide.
The preparation method of the metal anti-wear repair lubricating grease comprises the following steps:
stirring and heating the base lubricating grease to 70-80 ℃, adding the prepared anti-wear repairing agent into the base lubricating grease for three times at an interval of 15-35 minutes each time, continuing to keep the temperature and stir for 60-90 minutes after the addition is finished, cooling to room temperature, and continuing to stir for 12-18 hours.
Example 2
The metal anti-wear repairing lubricating grease consists of base lubricating grease and an anti-wear repairing agent, wherein the mass ratio of the base lubricating grease to the anti-wear repairing agent is 100: 1;
the antiwear restoration agent comprises the following components in percentage by weight:
37% of silicon dioxide, 40% of magnesium oxide, 0.8% of aluminum oxide, 0.5% of calcium oxide, 0.25% of potassium oxide, 0.28% of manganese oxide, 0.2% of ferrous oxide, 0.05% of phosphorus pentoxide, 20.82% of positive ion water and 0.1% of negative ion water.
The particle size of the silicon dioxide, the magnesium oxide, the aluminum oxide, the calcium oxide, the potassium oxide, the manganese oxide, the ferrous oxide and the phosphorus pentoxide is 50-100 nm. The micro-nano powder in the particle size range can greatly improve the lubricating property and effectively improve the bearing capacity of the friction pair.
The preparation method of the antiwear restoration agent comprises the following steps:
the method comprises the following steps: respectively ball-milling silicon dioxide and magnesium oxide by using a ball mill, then putting the ball-milled silicon dioxide and magnesium oxide into liquid for separation, and screening out silicon oxide and magnesium oxide with the particle size of 50-100 nm;
step two: treating potassium oxide and phosphorus pentoxide by using a surface modifier, and mixing with silicon dioxide and magnesium oxide to obtain a mixture a.
Step three: and (3) subjecting the mixture a to certain normal pressure and shearing force in a ball mill, and removing the surface modifier of potassium oxide and phosphorus pentoxide by using the instantaneous high temperature generated by the high-pressure contact zone to perform chemical reaction to obtain a mixture b.
Step four: the mixture b generates microscopic explosion in a microscopic high-pressure contact area to form microscopic high-pressure vacuum, silicon dioxide, magnesium oxide and other trace elements in the mixture b act in the environment to instantly synthesize magnesium hydroxy silicate, and phosphate glass (Grignard salt) is generated under the cooling function of lubricating oil.
Step five: ball milling the alumina, calcium oxide, manganese oxide and ferrous oxide with a ball mill, separating with liquid, and screening to obtain mixture c with particle size of 50-100 nm.
Step six: and c, mixing the mixture c, the substances obtained in the step four, the positive ion water, the negative ion water and a small amount of catalyst for reaction, and finally obtaining the anti-wear repairing agent.
The liquid in the first step and the fifth step is water or oil or other liquid which does not react with silicon oxide and magnesium oxide.
The preparation method of the metal anti-wear repair lubricating grease comprises the following steps:
stirring and heating the base lubricating grease to 70-80 ℃, adding the prepared anti-wear repairing agent into the base lubricating grease for three times at an interval of 15-35 minutes each time, continuing to keep the temperature and stir for 60-90 minutes after the addition is finished, cooling to room temperature, and continuing to stir for 12-18 hours.
Example 3
The metal anti-wear repairing lubricating grease consists of base lubricating grease and an anti-wear repairing agent, wherein the mass ratio of the base lubricating grease to the anti-wear repairing agent is 10: 1;
the antiwear restoration agent comprises the following components in percentage by weight:
45.0% of silicon dioxide, 46% of magnesium oxide, 1.5% of aluminum oxide, 0.8% of calcium oxide, 0.4% of potassium oxide, 0.4% of manganese oxide, 0.3% of ferrous oxide, 0.01% of phosphorus pentoxide, 5.19% of positive ion water and 0.4% of negative ion water.
Preferably, the particle size of the silicon dioxide, magnesium oxide, aluminum oxide, calcium oxide, potassium oxide, manganese oxide, ferrous oxide and phosphorus pentoxide is 50-100 nm. The micro-nano powder in the particle size range can greatly improve the lubricating property and effectively improve the bearing capacity of the friction pair.
The preparation method of the antiwear restoration agent comprises the following steps:
the method comprises the following steps: respectively ball-milling silicon dioxide and magnesium oxide by using a ball mill, then putting the ball-milled silicon dioxide and magnesium oxide into liquid for separation, and screening out silicon oxide and magnesium oxide with the particle size of 50-100 nm;
step two: treating potassium oxide and phosphorus pentoxide by using a surface modifier, and mixing with silicon dioxide and magnesium oxide to obtain a mixture a.
Step three: and (3) subjecting the mixture a to certain normal pressure and shearing force in a ball mill, and removing the surface modifier of potassium oxide and phosphorus pentoxide by using the instantaneous high temperature generated by the high-pressure contact zone to perform chemical reaction to obtain a mixture b.
Step four: the mixture b generates microscopic explosion in a microscopic high-pressure contact area to form microscopic high-pressure vacuum, silicon dioxide, magnesium oxide and other trace elements in the mixture b act in the environment to instantly synthesize magnesium hydroxy silicate, and phosphate glass (Grignard salt) is generated under the cooling function of lubricating oil.
Step five: ball milling the alumina, calcium oxide, manganese oxide and ferrous oxide with a ball mill, separating with liquid, and screening to obtain mixture c with particle size of 50-100 nm.
Step six: and c, mixing the mixture c, the substances obtained in the step four, the positive ion water, the negative ion water and a small amount of catalyst for reaction, and finally obtaining the anti-wear repairing agent.
The liquid in the first step and the fifth step is water or oil or other liquid which does not react with silicon oxide and magnesium oxide.
The preparation method of the metal anti-wear repair lubricating grease comprises the following steps:
stirring and heating the base lubricating grease to 70-80 ℃, adding the prepared anti-wear repairing agent into the base lubricating grease for three times at an interval of 15-35 minutes each time, continuing to keep the temperature and stir for 60-90 minutes after the addition is finished, cooling to room temperature, and continuing to stir for 12-18 hours.
Reciprocating friction experiment
The experimental group is the metal anti-wear repair grease prepared in example 1, and the control group is the base grease without the anti-wear repair agent.
The adopted instrument is a reciprocating ball-plane type friction tester, and the specific parameters are as follows: the forward load is 5 Newton, the step length is 2 mm, the frequency is 1 Hz/2 Hz/3 Hz, and the sliding distance is 14.4 m/28.8 m/57.65 m;
calculation of wear amount:
[1]Jun,Q.,and Truhan,J.J.,2006,"An Efficient Method for AccuratelyDetermining Wear Volumes of Sliders with Non-3D Non-contact Profilometer FlatWear Scars and Compound Curvatures,"Wear,261(7-8),pp.848-55.
(1) research on average friction coefficient under same working frequency and different working time lengths
Under the parameter conditions of forward load of 5 newtons, step length of 2 millimeters and frequency of 1 hertz, the relation between the friction coefficient and time is studied, and the average friction coefficient of the metal anti-wear repair lubricating grease prepared in example 1 is compared with the average friction coefficient of the base lubricating grease without the anti-wear repair agent, and the result is shown in fig. 1, as the time is prolonged, the average friction coefficient of the base lubricating grease of the control group is increased, while the average friction coefficient of the metal anti-wear repair lubricating grease prepared in example 1 of the experimental group is reduced along with the reduction, and after 1 hour, the average friction coefficient of the experimental group is reduced by 0.88 percent compared with that of the control group; after 2 hours, the average friction coefficient of the experimental group is reduced by 28.82 percent compared with that of the control group; after 4 hours, the average coefficient of friction of the experimental group decreased by 44.79% compared to the control group.
(2) Research on abrasion loss under same working frequency and different working time lengths
Under the parameter conditions of forward load of 5 newtons, step length of 2 millimeters and frequency of 1 hertz, the relationship between the wear loss and the time is studied, the wear loss of the metal anti-wear repair lubricating grease prepared in example 1 is compared with the wear loss of the base lubricating grease without the anti-wear repair agent, and the result obtained by calculation by adopting the formula is shown in fig. 1, the wear loss of the control group and the wear loss of the experimental group are both increased along with the increase of the time, but the wear loss of the experimental group is accelerated by far less than that of the control group.
(3) Research on wear rate under same working frequency and different working time lengths
Under the parameter conditions of forward load of 5 newtons, step length of 2 millimeters and frequency of 1 hertz, the relationship between the wear rate and time is studied, the wear rate of the metal anti-wear repair lubricating grease prepared in example 1 is compared with the wear rate of the base lubricating grease without the anti-wear repair agent, and the result obtained by calculation by adopting the formula is shown in fig. 1, and the wear rates of the time-duration experimental groups working at different times are all lower than those of the comparative group.
(4) Comparison of wear marks at the same operating frequency and at different operating durations
A comparison of the wear scar of the metal anti-wear repair grease prepared in example 1 and the base grease without the anti-wear repair agent added under the conditions of a forward load of 5 newtons, a step size of 2 millimeters and a frequency of 1 hertz, and fig. 4 is a comparison of two-dimensional profile images.
And (4) conclusion: under the condition of the same working frequency, the longer the working time and the longer the sliding distance, the better the effect of the metal anti-wear repair grease prepared in the example 1 is, and the friction coefficient, the wear amount and the wear rate are obviously reduced relative to the control group. From the two-dimensional profile, it can be seen that the width and depth of the wear scar on the metal surface are gradually increased with the increase of the working time, but the width and depth of the wear scar on the metal surface under the protection of the metal anti-wear repair grease prepared in example 1 are far smaller than those of the base grease in a lubrication state.
(5) Research on average friction coefficient under same working distance and different working frequencies
Under the parameter conditions of 5 newtons of forward load, 2 millimeters of step length and 57.6m of distance, the relation between the friction coefficient and the frequency is researched, the average friction coefficient of the metal anti-wear repair lubricating grease prepared in example 1 is compared with the average friction coefficient of the base lubricating grease without the anti-wear repair agent, and the result is shown in fig. 5, when the frequency is 1Hz, the average friction coefficient of the experimental group is reduced by 41.37% compared with that of the control group; when the frequency is 2Hz, the average friction coefficient of the experimental group is reduced by 60.33 percent compared with that of the control group; at a frequency of 4Hz, the average coefficient of friction of the experimental group was reduced by 44.52% compared to the control group. Therefore, under the same working distance, with the increase of the working frequency, the average friction coefficients of the metal anti-wear repair grease prepared in example 1 and the base grease without the anti-wear repair agent are smaller and smaller, and the reduction rate of the average friction coefficient of the metal anti-wear repair grease prepared in example 1 is reduced compared with that of the base grease without the anti-wear repair agent.
(6) Research on abrasion loss under same working distance and different working frequencies
Under the parameter conditions of forward load of 5 newtons, step length of 2 millimeters and distance of 57.6m, the relationship between the abrasion loss and the frequency is researched, the abrasion loss of the metal anti-abrasion repair lubricating grease prepared in example 1 is compared with the abrasion loss of the base lubricating grease without the anti-abrasion repair agent, the result obtained by calculation by adopting the formula is shown in fig. 6, and when the frequency is 1Hz, the abrasion loss of an experimental group is reduced by 11.85 percent compared with that of a control group; when the frequency is 1Hz, the abrasion loss of the experimental group is reduced by 7.74 percent compared with that of the control group; when the frequency is 1Hz, the abrasion loss of the experimental group is reduced by 7.03 percent compared with that of the control group.
(7) Research on wear rate under same working distance and different working frequencies
Under the parameter conditions of forward load of 5 newtons, step length of 2 millimeters and distance of 57.6m, the relationship between the abrasion rate and the frequency is studied, the abrasion rates of the metal anti-abrasion repair grease prepared in example 1 and the base grease without the anti-abrasion repair agent are compared, and the result obtained by calculation by using the formula is shown in fig. 7, and the abrasion rates of the experiment groups with different working time lengths are all lower than those of the comparison control group.
(8) Comparison of wear marks at the same operating frequency and at different operating durations
A comparison of the wear scar of the metal anti-wear healing grease prepared in example 1 and the base grease without anti-wear healing agent addition was made under the parameters of a forward load of 5 newtons, a step size of 2 millimeters and a distance of 57.6m, and fig. 8 is a comparison of two-dimensional profile images.
And (4) conclusion: under the condition of the same sliding distance, the friction coefficient (41% -60%), the abrasion loss (32% -40%) and the abrasion rate (32% -40%) of the metal surface after the metal anti-wear repairing lubricating grease prepared in example 1 is added are obviously reduced along with the increase of the frequency. It can be seen from the two-dimensional profile chart that, as the frequency increases, the width and depth of the wear scar on the metal surface are gradually reduced, and after the metal anti-wear repair grease prepared in the anti-wear repair agent example 1 is added, the width and depth of the wear scar are both obviously reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The metal anti-wear repairing lubricating grease is characterized by consisting of base lubricating grease and an anti-wear repairing agent, wherein the mass ratio of the base lubricating grease to the anti-wear repairing agent is 100: 1-10;
the antiwear restoration agent comprises the following components in percentage by weight:
37-45.0% of silicon dioxide, 40-46% of magnesium oxide, 0.8-1.5% of aluminum oxide, 0.5-0.8% of calcium oxide, 0.25-0.4% of potassium oxide, 0.28-0.4% of manganese oxide, 0.2-0.3% of ferrous oxide, 0.05-0.01% of phosphorus pentoxide, 5.19-20.82% of positive ion water and 0.1-0.4% of negative ion water.
2. The metal anti-wear repairing grease and the preparation method thereof according to claim 1, wherein the metal anti-wear repairing grease is composed of a base grease and an anti-wear repairing agent, and the mass ratio of the base grease to the anti-wear repairing agent is 100: 3;
the antiwear restoration agent comprises the following components in percentage by weight:
43.49% of silicon dioxide, 41.0% of magnesium oxide, 1.18% of aluminum oxide, 0.64% of calcium oxide, 0.33% of potassium oxide, 0.32% of manganese oxide, 0.25% of ferrous oxide, 0.085% of phosphorus pentoxide, 12.37% of positive ion water and 0.29% of negative ion water.
3. The metal anti-wear repairing grease of claim 1, which consists of a base grease and an anti-wear repairing agent, wherein the mass ratio of the base grease to the anti-wear repairing agent is 100: 1;
the antiwear restoration agent comprises the following components in percentage by weight:
37% of silicon dioxide, 40% of magnesium oxide, 0.8% of aluminum oxide, 0.5% of calcium oxide, 0.25% of potassium oxide, 0.28% of manganese oxide, 0.2% of ferrous oxide, 0.05% of phosphorus pentoxide, 20.82% of positive ion water and 0.1% of negative ion water.
4. The metal anti-wear repairing grease of claim 1, which consists of a base grease and an anti-wear repairing agent, wherein the mass ratio of the base grease to the anti-wear repairing agent is 10: 1;
the antiwear restoration agent comprises the following components in percentage by weight:
45.0% of silicon dioxide, 46% of magnesium oxide, 1.5% of aluminum oxide, 0.8% of calcium oxide, 0.4% of potassium oxide, 0.4% of manganese oxide, 0.3% of ferrous oxide, 0.01% of phosphorus pentoxide, 5.19% of positive ion water and 0.4% of negative ion water.
5. The metal antiwear restoration grease of claim 1, wherein said silica, magnesium oxide, aluminum oxide, calcium oxide, potassium oxide, manganese oxide, ferrous oxide and phosphorus pentoxide are in the form of nano-sized particles.
6. The metal antiwear restoration grease of claim 1, wherein the silica, magnesium oxide, aluminum oxide, calcium oxide, potassium oxide, manganese oxide, ferrous oxide, and phosphorus pentoxide have a particle size of 50-100 nm.
7. An antiwear repair metal grease according to any one of claims 1 to 6, wherein said antiwear repair agent is prepared by the following method:
the method comprises the following steps: respectively ball-milling silicon dioxide and magnesium oxide by using a ball mill, then putting the ball-milled silicon dioxide and magnesium oxide into liquid for separation, and screening out silicon oxide and magnesium oxide with the particle size of 50-100 nm;
step two: treating potassium oxide and phosphorus pentoxide by using a surface modifier, and mixing with silicon dioxide and magnesium oxide to obtain a mixture a.
Step three: and (3) subjecting the mixture a to certain normal pressure and shearing force in a ball mill, and removing the surface modifier of potassium oxide and phosphorus pentoxide by using the instantaneous high temperature generated by the high-pressure contact zone to perform chemical reaction to obtain a mixture b.
Step four: the mixture b generates microscopic explosion in a microscopic high-pressure contact area to form microscopic high-pressure vacuum, silicon dioxide, magnesium oxide and other trace elements in the mixture b act in the environment to instantly synthesize magnesium hydroxy silicate, and phosphate glass (Grignard salt) is generated under the cooling function of lubricating oil.
Step five: ball milling the alumina, calcium oxide, manganese oxide and ferrous oxide with a ball mill, separating with liquid, and screening to obtain mixture c with particle size of 50-100 nm.
Step six: and c, mixing the mixture c, the substances obtained in the step four, the positive ion water, the negative ion water and a small amount of catalyst for reaction, and finally obtaining the anti-wear repairing agent.
Preferably, the liquid in the first step and the fifth step is water, oil or the like which does not react with silicon oxide and magnesium oxide.
8. A preparation method of metal anti-wear repairing lubricating grease is characterized in that basic lubricating grease is stirred and heated to 70-80 ℃, the prepared anti-wear repairing agent is added into the basic lubricating grease for three times, the interval is 15-35 minutes each time, after the addition is finished, the heat preservation and stirring are continued for 60-90 minutes, and after the cooling is carried out to the room temperature, the stirring is continued for 12-18 hours.
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