High-temperature lubricant for thermal simulation experiment and preparation method thereof

A high-temperature lubricant and experimental technology, applied in lubricating compositions, additives, petroleum industry, etc., can solve the problems of affecting the accuracy of measurement, affecting the results of high-temperature experiments, large frictional resistance, etc. Accurate results and the effect of reducing the coefficient of friction

Active Publication Date: 2021-03-12
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the deformation process of the sample, there is a large frictional resistance between the two ends of the sample and the indenter, which affects the accuracy of the force measurement of the experimental results
In order to solve the above problems, MoS is generally used at present 2 Or carbon powder is used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] The present invention further provides a method of preparing a high temperature lubricant for thermal simulation experiments, including the following steps:

[0028] A. After 500 ~ 700 parts of graphite powder and 100 ~ 200 parts of mineral oil are mixed, surface pretreatment is performed using ultrasonic mixed dispersion techniques;

[0029] B, take 60 ~ 80 graphite powder and 100 parts of mineral oil, mix evenly, and have a stone ink mass.

[0030] C. After the step A is pressed by the surface pretreatment, mixed with the graphite slurry obtained by step B, dispersion, graphite emulsion;

[0031] D. After the graphite emulsion obtained from step C is mixed with 5 to 200 servants, the nickel powder is dispersed uniform with microwave treatment to the emulsion, and then mixed with 50 to 100 parts of lithium soap, grinding, gave lubricant.

[0032] The method of the present invention is prepared by step A to C, ensuring that the frequency of the ultrasonic mixed dispersion i...

Example Embodiment

[0037] Example 1

[0038] A, weigh 500 graphite powder, add graphite powder to 150 g of mineral oil, and apply ultrasonic mixed dispersion technology to perform surface pretreatment at 20 kHz frequencies. Time is 10 min;

[0039] B, weigh 60 graphite powder, add 100 g of mineral oil to make a graphite slurry;

[0040] C. The mixture obtained by the surface pretreatment is treated with 10 kg of pressure in the pressure vessel, followed by adding the graphite lamination, sufficiently dispersing the polishing for 5 h until the mixture is a graphite emulsion;

[0041] D, 100 nickel powder was added to the graphite emulsion, and the microwave was treated under 450 ° C for 15 min until the nickel dispersion in the emulsion was uniform, and 70 g of a lithium stearate soap is added to the emulsion mixture dispersion uniform, and continues to grind 3H, the high temperature lubricant of the present invention can be obtained.

[0042] This high temperature lubricant is suitable for experimen...

Example Embodiment

[0043] Example 2

[0044] A, weigh 500 g of graphite powder, add graphite powder to 100 g of mineral oil, and apply ultrasonic mixed dispersion technology for surface pretreatment at 20 kHz frequency; time is 10 min;

[0045] B, weigh 60 g of graphite powder, add 100 g of mineral oil to make a graphite slurry;

[0046] C. The mixture obtained by the surface pretreatment is treated with 10 kg of pressure in the pressure vessel, followed by the graphite lamination, sufficiently dispersed from 5 to 7 hours until the mixture is a graphite emulsion;

[0047] D. 5 to 10 g of nickel powder was added to the graphite emulsion, and the microwave was treated under 400 ° C for 15 min until the nickel powder was dispersed in the emulsion, and 60 g of a lithium stearate soap was added to the emulsion mixture dispersed with nickel powder. The high temperature lubricant of the present invention can be obtained by continuous grounding of 2.5 h.

[0048] This high-temperature lubricant is suitable ...

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Abstract

The invention discloses a high-temperature lubricant for a thermal simulation experiment and a preparation method of the high-temperature lubricant, and belongs to the technical field of lubricants. The invention overcomes the defects of poor high-temperature performance stability and the like of the existing lubricant, and provides a high-temperature lubricant for thermal simulation experiments,which comprises the following raw materials in parts by weight: 560-780 parts of graphite powder, 200-300 parts of mineral oil, 5-200 parts of nickel powder and 50-100 parts of lithium soap. Graphitepowder serves as a matrix and is converted into graphite emulsion through mineral oil, then nickel powder is added, grinding treatment is conducted through a high-speed dispersion ball mill, finally,lithium soap is added, grinding is conducted, and the lubricant is prepared. The lubricant provided by the invention provides good lubrication for the end part of a sample during a thermal simulationexperiment, and especially during high-temperature compression, the friction force of the end part of the sample is reduced, so that the experiment result is more accurate.

Description

technical field [0001] The invention belongs to the technical field of lubricants, and in particular relates to a high-temperature lubricant for thermal simulation experiments and a preparation method thereof. Background technique [0002] The physical simulation experiment of metal materials is an indispensable link in the study of material properties and the development of new material preparation processes, among which material thermal simulation is the basic means of physical simulation. At present, only Gleeble thermal simulation equipment has reached 200 units nationwide. Taking Panzhihua Iron and Steel's thermal simulation equipment as an example, the experiment of thermal simulation equipment has reached saturation, and the equipment maintains an average working time of 10 hours a day, which consumes a lot of high-temperature lubricants. [0003] The general process of material thermal simulation is to apply a certain load and current to the experimental sample thro...

Claims

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Application Information

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IPC IPC(8): C10M141/02C10N30/06C10N30/08
CPCC10M141/02C10M2201/041C10M2201/14C10M2201/05C10M2203/10C10M2207/126
Inventor 蔡晓文邢远杨旭杨晓琴
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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