阅读说明：本技术 一种提高电机运转轴承耐磨性的方法 (Method for improving wear resistance of motor running bearing ) 是由 李明臻 王军 田晓萍 李佑林 于 2019-12-06 设计创作，主要内容包括：本发明涉及新材料加工技术领域,公开了一种提高电机运转轴承耐磨性的方法,通过对超细纳米材料性能的研究,将制备得到的润滑油添加剂加入到基础润滑油中,用于电机运转轴承的润滑,极大的提高了润滑油的润滑性能,降低摩擦系数,起到抗压减磨作用,即便在高载荷、大转速条件下,也能够持久的保障转轴的承载抗磨能力,该润滑油添加剂材料能够强化基础油的润滑性能,降低接触表面粗糙度,在润滑油中的分散性好,用量少,在电机运转过程中,能够有效的填充摩擦接触面的微坑、划痕等,修复损伤的摩擦表面,降低磨损,即使在缺油状态下,也能够形成优异的表面润滑保护膜,拓宽了其使用场合。(The invention relates to the technical field of new material processing, and discloses a method for improving the wear resistance of a motor running bearing, which is characterized in that a lubricating oil additive prepared by researching the performance of an ultrafine nano material is added into basic lubricating oil for lubricating the motor running bearing, so that the lubricating performance of the lubricating oil is greatly improved, the friction coefficient is reduced, the compression and abrasion resistance are realized, the bearing wear resistance of a rotating shaft can be durably ensured even under the conditions of high load and high rotating speed, the lubricating oil additive material can strengthen the lubricating performance of the basic oil, reduce the roughness of a contact surface, has good dispersity and small dosage in the lubricating oil, can effectively fill micro pits, scratches and the like of a friction contact surface in the motor running process, repair the damaged friction surface, reduce the abrasion, and form an excellent surface lubricating protective film even under the oil shortage state, the application occasions are widened.)

1. A method for improving the abrasion resistance of a motor running bearing is characterized in that a prepared lubricating oil additive is added into basic lubricating oil for lubricating the motor running bearing; the preparation method of the lubricating oil additive comprises the following steps:

(1) weighing dysprosium oxide and magnesium nitrate 6.0-6.2 mmol and magnesium nitrate 7.8-8.0 mmol respectively, mixing well and placing in a beaker, adding 150-160 ml hydrochloric acid solution into a beaker, continuously stirring and dispersing for 60-70 minutes, adding 1.3-1.4 g of sodium acetate and 2.6-3.0 g of polyethylene glycol into the dispersion, stirring and mixing uniformly, heating in 50-60 deg.C water bath, magnetically stirring for 20-30 min, adding 20-25 ml ethylene glycol, mixing, transferring to reaction kettle, reacting at 180 ℃ and 200 ℃ for 12-16 hours, naturally cooling to room temperature after the reaction is finished, taking out the obtained product, pouring out the supernatant, washing the residual precipitate for 3-5 times by using deionized water and absolute ethyl alcohol respectively, and carrying out freeze drying at-20 ℃ for 2-3 hours to obtain the dysprosium oxide/magnesium oxide composite nano material;

(2) weighing 4.5-4.8 g of dysprosium oxide/magnesium oxide composite nano material prepared, placing the dysprosium oxide/magnesium oxide composite nano material in a beaker, adding 90-95 ml of citric acid solution into the beaker, placing the beaker on a magnetic stirrer, continuously stirring the mixture for 30-40 minutes at the rotating speed of 350 revolutions per minute of 300 plus materials, then dispersing the mixture for 10-15 minutes at the ultrasonic frequency of 120 Hz of 100 plus materials, transferring the dispersion into a three-neck flask, adding 2-3 ml of ammonia water solution into the flask, heating the mixture to 50-60 ℃ under stirring, adding 0.7-0.8 g of ethyl orthosilicate and 0.2-0.3 ml of 3-aminopropyltriethoxysilane into the flask, continuously stirring the mixture for 2-3 hours under the heating of water bath at the temperature of 60-65 ℃, standing and centrifugally separating the mixture to obtain a product, respectively and alternately ultrasonically washing the product for 3-5 times by using deionized water and absolute ethyl alcohol, and then placing the mixture in a vacuum drying oven at the temperature of 80-90 ℃ for drying for 6-8 hours to obtain the lubricating oil additive.

2. The method for improving the wear resistance of the running bearing of the motor according to claim 1, wherein the lubricating oil additive is added in an amount of 0.033 to 0.035% based on the mass fraction of the base lubricating oil.

3. The method for improving the wear resistance of the running bearing of the motor according to claim 1, wherein the hydrochloric acid solution with the molar concentration of 2.0 to 2.4 mol/l is used in the step (1).

4. The method of claim 1, wherein the molecular weight of the polyethylene glycol of step (1) is 20000 g/mol.

5. The method for improving the wear resistance of the running bearing of the motor as recited in claim 1, wherein the size of the particle diameter of the dysprosium oxide/magnesium oxide composite nanomaterial in step (1) is between 25 and 30 nanometers.

6. The method for improving the wear resistance of the running bearing of the motor according to claim 1, wherein the citric acid solution in the step (2) has a molar concentration of 0.5 to 0.6 mol/l.

7. The method for improving the wear resistance of the running bearing of the motor according to claim 1, wherein the molar concentration of the aqueous ammonia solution in the step (2) is 1.8 to 2.0 mol/l.

Technical Field

The invention belongs to the technical field of new material processing, and particularly relates to a method for improving the wear resistance of a motor running bearing.

Background

The motor is divided according to the types of working power supplies: and can be divided into dc motors and ac motors. Whether it is an ac motor or a dc motor, the motor bearings are essential elements of the operation of the motor, and their quality directly affects the normal operation of the motor. The main function is to support the mechanical rotator of the motor, reduce the friction coefficient in the working rotation and ensure the precision of the operation.

At present, in order to improve the lubricating performance of a motor running bearing, the friction coefficient of the motor running bearing is reduced by using various lubricating oil, and the effects of wear resistance, pressure resistance and the like are achieved. Along with the improvement of each aspect performance parameter of motor mechanical equipment, the motor is in heavy load, high speed, high accuracy operational environment, and is higher to motor bearing wearability examination nature, and current lubricating oil has not been can not satisfy current demand, not only can aggravate motor bearing's damage, still has certain risk, has influenced the safe operation of motor. Therefore, the wear resistance of the motor running bearing is further improved, and the method has important significance for guaranteeing efficient and stable operation of the motor.

Disclosure of Invention

The invention aims to solve the existing problems and provides a method for improving the wear resistance of a motor running bearing, which greatly improves the lubricating property of lubricating oil, reduces the friction coefficient and plays a role in resisting pressure and reducing wear.

The invention is realized by the following technical scheme:

a method for improving the wear resistance of a motor running bearing has the preferred scheme that a prepared lubricating oil additive is added into basic lubricating oil and used for lubricating the motor running bearing, so that the lubricating performance of the lubricating oil is greatly improved, the friction coefficient is reduced, the compression and abrasion resistance effects are achieved, the bearing and wear resistance of a rotating shaft can be durably guaranteed even under the conditions of high load and high rotating speed, and the addition amount accounts for 0.033-0.035% of the mass fraction of the basic lubricating oil; the preparation method of the lubricating oil additive comprises the following steps:

preparing a lubricating oil additive: weighing 6.0-6.2 mmol dysprosium oxide and 7.8-8.0 magnesium nitrate respectively, uniformly mixing and placing in a beaker, adding 150 ml of hydrochloric acid solution with the molar concentration of 2.0-2.4 mol/L into the beaker, continuously stirring and dispersing for 60-70 minutes, adding 1.3-1.4 g sodium acetate and 2.6-3.0 g polyethylene glycol into dispersion liquid, stirring and mixing uniformly, placing in a 50-60 ℃ water bath kettle for heating, magnetically stirring for 20-30 minutes, adding 20-25 ml ethylene glycol, mixing uniformly, transferring to a reaction kettle, reacting for 12-16 hours at 180-200 ℃, naturally cooling to room temperature after the reaction is finished, taking out the obtained product, pouring out supernatant, washing the residual precipitate with deionized water and absolute ethyl alcohol for 3-5 times respectively, and freeze-drying for 2-3 hours at-20 ℃ to obtain dysprosium oxide/magnesium oxide composite with the particle size of 25-30 nanometers And synthesizing the nano material. The molecular weight of the polyethylene glycol is 20000 g/mol.

Weighing 4.5-4.8 g of dysprosium oxide/magnesium oxide composite nano material prepared, placing the dysprosium oxide/magnesium oxide composite nano material in a beaker, adding 90-95 ml of citric acid solution with the molar concentration of 0.5-0.6 mol/L into the beaker, placing the mixture on a magnetic stirrer, continuously stirring the mixture for 30-40 minutes at the rotating speed of 300-350 r/min, then dispersing the mixture for 10-15 minutes at the ultrasonic frequency of 100-120 Hz, transferring the dispersion into a three-neck flask, adding 2-3 ml of ammonia water solution with the molar concentration of 1.8-2.0 mol/L into the flask, heating the mixture to 50-60 ℃ under stirring, adding 0.7-0.8 g of ethyl orthosilicate and 0.2-0.3 ml of 3-aminopropyltriethoxysilane into the flask, continuously stirring the mixture for 2-3 hours under the water bath heating of 60-65 ℃, standing, performing centrifugal separation to obtain a product, alternately performing ultrasonic washing on the product for 3-5 times by using deionized water and absolute ethyl alcohol respectively, and then drying the product in a vacuum drying oven at the temperature of 80-90 ℃ for 6-8 hours to obtain the lubricating oil additive.

The lubricating oil additive material can strengthen the lubricating property of base oil, reduce the roughness of a contact surface, has good dispersity and small using amount in lubricating oil, can effectively fill micro pits, scratches and the like of a friction contact surface in the running process of a motor, repair the damaged friction surface, reduce abrasion, form an excellent surface lubricating protective film even in an oil-deficient state, and widen the use occasions of the lubricating oil additive material.

Compared with the prior art, the invention has the following advantages: in order to solve the problem that the wear resistance of the existing motor running bearing is greatly tested, the invention provides a method for improving the wear resistance of the motor running bearing, through the research on the performance of superfine nano materials, the prepared lubricating oil additive is added into basic lubricating oil for lubricating the motor running bearing, the lubricating performance of the lubricating oil is greatly improved, the friction coefficient is reduced, the compression and wear reduction effects are achieved, the bearing wear resistance of a rotating shaft can be durably ensured even under the conditions of high load and high rotating speed, the lubricating oil additive material can strengthen the lubricating performance of the basic oil, the contact surface roughness is reduced, the dispersity in the lubricating oil is good, the consumption is small, micro pits, scratches and the like of a friction contact surface can be effectively filled in the running process of the motor, the damaged friction surface is repaired, the wear is reduced, even under the oil shortage state, an excellent surface lubricating protective film can be formed, and the application occasions are widened; the invention can obviously improve the wear resistance of the motor running bearing, solves the problem that the antifriction effect is greatly influenced by adding nano metal materials or carbon materials in the prior art under the oil-deficient and high-speed working environment, can ensure the efficient and stable work of the motor, and obviously improves the economic benefit and the social benefit. The invention effectively solves the problem of insufficient wear resistance of the motor running bearing under the requirement of high performance, has the characteristics of low cost, low pollution and high performance, has extremely high lubricating effect, is beneficial to the high-speed, precise and high-performance development of the motor, can realize the practical significance of promoting the development of the motor byproduct manufacturing industry and improving the market competitiveness, has higher value for the research and application of the motor dynamic performance and the improvement of the service life, obviously promotes the rapid development and the sustainable development of resources in the field of modern motor industry, and is a technical scheme which is extremely worthy of popularization and use.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described with reference to specific embodiments, and it should be understood that the specific embodiments described herein are only used for explaining the present invention and are not used for limiting the technical solutions provided by the present invention.