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Preparation method of a wear-resistant and high-strength self-lubricating electrical contact material

An electric contact material and self-lubricating technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of short service life and poor wear resistance of materials, achieve enhanced wear resistance, self-lubrication performance, and durability The effect of grinding performance

Active Publication Date: 2020-06-26
浙江蓝天知识产权运营管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preparing a wear-resistant and high-strength self-lubricating electrical contact material in view of the problems of poor wear resistance and short service life of the existing electrical contact materials

Method used

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  • Preparation method of a wear-resistant and high-strength self-lubricating electrical contact material

Examples

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example 1

[0018] According to the mass ratio of 1:15, ferric sulfate and deionized water were stirred and mixed, and the pH was adjusted to 8.5 with a mass fraction of 10% sodium hydroxide solution, and the mixture was left to age for 6 hours to obtain the mixed solution and weighed 45 parts by weight. Put 3 parts of mixed solution, 3 parts of sodium dihydrogen phosphate and 3 parts of ferrous sulfate in a beaker, stir and mix and add dropwise 1% sulfuric acid solution to pH to 5.5, stir and mix and heat to boiling, heat preservation treatment for 2h, static Cool to room temperature, centrifuge at 1500r / min and collect the lower precipitate, and vacuum freeze-dry to obtain modified particles; according to the mass ratio of 1:10, add the modified particles to 200 mesh molybdenum disulfide powder to obtain mixed particles and Place in a quartz tube, seal the tube and evacuate it to 15Pa, heat up the tube to 450 °C at 5 °C / min, pass argon to remove the air and keep it warm for 2 hours, let ...

example 2

[0020] According to the mass ratio of 1:15, ferric sulfate and deionized water were stirred and mixed, and the pH was adjusted to 8.5 with a mass fraction of 10% sodium hydroxide solution, and left to age for 7 hours to obtain the mixed solution and weigh 47 4 parts of mixed solution, 4 parts of sodium dihydrogen phosphate and 4 parts of ferrous sulfate were placed in a beaker, stirred and mixed and added dropwise with a mass fraction of 1% sulfuric acid solution to pH to 5.5, stirred and mixed and heated to boiling, after heat preservation for 3 hours, static Cool to room temperature, centrifuge at 1750r / min and collect the lower precipitate, and vacuum freeze-dry to obtain modified particles; according to the mass ratio of 1:10, the modified particles are added to 200 mesh molybdenum disulfide powder to obtain mixed particles and Put it in a quartz tube, seal the quartz tube and evacuate to 17Pa, heat the quartz tube to 475 °C at 5 °C / min, pass argon to remove the air and kee...

example 3

[0022] According to the mass ratio of 1:15, ferric sulfate and deionized water were stirred and mixed, and the pH was adjusted to 8.5 with a mass fraction of 10% sodium hydroxide solution, and left to age for 8 hours to obtain the mixed solution and weighed 50% by weight. 5 parts of mixed solution, 5 parts of sodium dihydrogen phosphate and 5 parts of ferrous sulfate were placed in a beaker, stirred and mixed and added dropwise with a mass fraction of 1% sulfuric acid solution until the pH reached 5.5, stirred and mixed and heated to boiling, after heat preservation for 3 hours, static Cool to room temperature, centrifuge at 2000r / min and collect the lower precipitate, and vacuum freeze-dry to obtain modified particles; according to the mass ratio of 1:10, add the modified particles to 200 mesh molybdenum disulfide powder to obtain mixed particles and Place in a quartz tube, seal the quartz tube and evacuate to 20Pa, heat up the quartz tube to 500 °C at 5 °C / min, pass argon gas...

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Abstract

The invention relates to a preparation method of a wear-resistant and high-strength self-lubricating electrical contact material, belonging to the technical field of self-lubricating materials. In the present invention, ferric sulfate is used as a raw material, and sodium dihydrogen phosphate is used as a modifier. During the reaction, the phosphate radical and the crystal nucleus undergo coordination adsorption, and the phosphate radical adsorbed on the surface of the primary particle is parallel to the iron red crystal nucleus. c axis, the preferential adsorption of phosphate on these surfaces leads to the non-equiaxed growth of crystal nuclei, and the spindle-shaped matrix particles are prepared, which are then deposited on the surface of iron oxide particles by molybdenum disulfide. The surface of the lubricating material forms uneven structural characteristics, which can improve the lubrication performance of the surface of the friction pair through the dynamic pressure effect and the secondary lubrication effect formed by it. Dimple surface wear resistance.

Description

technical field [0001] The invention relates to a preparation method of a wear-resistant and high-strength self-lubricating electrical contact material, belonging to the technical field of self-lubricating materials. Background technique [0002] In the field of sliding electrical contact materials, metal-based solid lubricating materials are a very important direction for the development of electrical contacts. Due to their excellent friction and wear properties in some special environments, they have received extensive attention from researchers at home and abroad. focus on. The preparation method of the metal-based solid lubricating material is simply to add the solid electrowetting contact lubricant as a lubricating component to the metal matrix to form a composite material. During the friction process, the electrical contact is worn away with the metal skeleton, and the lubricant is released from the gaps of the metal matrix composite material, forming a lubricating fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F3/14
CPCB22F3/14B22F2998/10B22F1/105B22F2009/043
Inventor 赵玲萍蒋益
Owner 浙江蓝天知识产权运营管理有限公司
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