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Electric spark deposition preparation method of self-lubricating coating containing tantalum oxide

A self-lubricating coating and electric spark deposition technology, which is applied in the field of EDM deposition to achieve the effects of excellent anti-friction and wear resistance, improved mechanical properties, and simple preparation process

Active Publication Date: 2022-02-25
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a method for preparing a self-lubricating coating containing tantalum oxide by electric spark deposition. The obtained self-lubricating coating can solve the problem of friction and wear on the surface of a steel base material in a friction and wear environment, and ensure the safety and security of steel components. Efficient operation reduces production and maintenance costs

Method used

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  • Electric spark deposition preparation method of self-lubricating coating containing tantalum oxide
  • Electric spark deposition preparation method of self-lubricating coating containing tantalum oxide
  • Electric spark deposition preparation method of self-lubricating coating containing tantalum oxide

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Embodiment 1

[0037] In this embodiment, the base material is CrNi3MoVA steel, the electrode is pure tantalum, and the preparation steps of the tantalum self-lubricating coating are as follows:

[0038] (1) Firstly, the substrate material is polished step by step according to 240#, 400#, 600#, and 800# sandpaper to remove the oxide film on the surface of the substrate, and then polish it with an abrasive paste with a particle size of 2.5 μm, and then perform ultrasonic cleaning with acetone for 10 minutes to remove surface oil;

[0039] (2) First process the pure tantalum electrode into a columnar shape of Φ4mm×50mm, and grind it step by step according to 240#, 400#, 600#, 800# sandpaper to remove the oxide film on the surface of the substrate, and then use the abrasive paste with a particle size of 2.5μm Polishing, followed by ultrasonic cleaning with acetone for 10 minutes to remove surface oil;

[0040] (3) EDM deposition was carried out under argon protection. The specific process para...

Embodiment 2

[0050] In this embodiment, No. 45 steel is used as the base material, pure tantalum is used as the electrode, and the preparation steps of the self-lubricating coating are as follows:

[0051] (1) Firstly, the substrate material is polished step by step according to 240#, 400#, 600#, 800# sandpaper to remove the oxide film on the surface of the substrate, then polish it with a grinding paste with a particle size of 2.5 μm, and then perform ultrasonic cleaning with acetone for 8 minutes to remove surface oil;

[0052] (2) First process the pure tantalum electrode into a columnar shape of Φ3mm×50mm, and grind it step by step according to 240#, 400#, 600#, 800# sandpaper to remove the oxide film on the surface of the substrate, and then use the abrasive paste with a particle size of 2.5μm Polishing, followed by ultrasonic cleaning with acetone for 8 minutes to remove surface oil;

[0053] (3) EDM deposition is carried out under the protection of argon gas. The specific process p...

Embodiment 3

[0057] In this embodiment, the base material is Q235 steel, the electrode is pure tantalum, and the self-lubricating coating preparation steps are as follows:

[0058] (1) Firstly, the substrate material is polished step by step according to 240#, 400#, 600#, 800# sandpaper to remove the oxide film on the surface of the substrate, then polish it with an abrasive paste with a particle size of 2.5 μm, and then perform ultrasonic cleaning with acetone for 9 minutes to remove surface oil;

[0059] (2) First process the pure tantalum electrode into a Φ5mm×40mm column, and grind it step by step according to 240#, 400#, 600#, 800# sandpaper to remove the oxide film on the surface of the substrate, and then use the abrasive paste with a particle size of 2.5μm Polishing, followed by ultrasonic cleaning with acetone for 9 minutes to remove surface oil;

[0060] (3) EDM deposition was carried out under argon protection. The specific process parameters were: output power 1200W, output vo...

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Abstract

The invention relates to the field of preparation of an anti-wear coating on the surface of a steel member, and particularly relates to an electric spark deposition preparation method of a self-lubricating coating containing tantalum oxide. Steel is adopted as a base body material, a pure tantalum electrode is adopted as an electric spark deposition electrode, and a self-lubricating coating containing tantalum oxide is deposited on the surface of a steel base body by adopting an electric spark deposition technology. The self-lubricating coating and a steel substrate are metallurgically bonded with a strong bonding force, and tantalum oxide enhances the hardness of the self-lubricating coating so that the self-lubricating coating has better antifriction and wear-resistant effects, and the problem of wear of the surface of a steel member in a frictional wear environment can be solved.

Description

technical field [0001] The invention relates to the field of preparation of wear-resistant coatings on the surface of steel components, in particular to a method for preparing pure tantalum electrodes for self-lubricating coatings containing tantalum oxide strengthening phases by electric spark deposition, which can be applied to the realization of steel parts The surface coating has a significant anti-friction and wear-resisting effect on the surface of the part. Background technique [0002] Surface wear can lead to premature failure of equipment components, thereby affecting the normal operation of the entire equipment. In highly industrialized countries, friction and wear cause a large amount of economic losses, accounting for about 1 to 2% of GDP. Therefore, it is of great significance to improve the friction and wear properties of the surface of key component materials. [0003] Coating technology has been widely used to improve the surface properties of metal compon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C26/02
CPCC23C26/02
Inventor 王子君郭策安张新颖梁振刚柳泉张健
Owner SHENYANG LIGONG UNIV
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