A preparation method of wear-resistant bulldozer transmission shaft parts

A technology for drive shafts and bulldozers, applied in the field of shaft parts manufacturing, can solve the problems of PVD coating peeling, coating peeling, and unsupported, and achieve the effect of improving strength and anti-wear characteristics, reducing friction coefficient, and slowing down performance differences.

Active Publication Date: 2022-05-24
JINING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the PVD carbide coating is prepared directly on the surface of the bulldozer drive shaft parts, due to the large difference between the substrate hardness, elastic modulus, thermal expansion coefficient and the coating material, it is impossible to obtain a PVD coating with high bonding force, making PVD Premature peeling and failure of the coating
Chinese patent CN101058870A adopts a single PVD coating on the surface of the mold. The poor bonding force between the coating and the substrate and the poor mechanical matching between the PVD coating and the substrate are important factors that limit the advantages of PVD coatings such as high hardness and low friction coefficient.
Chinese patent CN103727180A directly prepares wear-resistant ceramic coatings and diamond coatings on the surface of carbon steel. Due to the soft hardness of the substrate, which cannot support the coating and the obvious performance difference between the substrate and the coating, the performance of the prepared coating cannot meet the requirements. Many practical requirements, especially under the conditions of high speed, heavy load and alternating load, the coating will fall off and wear quickly

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  • A preparation method of wear-resistant bulldozer transmission shaft parts

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Embodiment 1

[0028] In the preparation method of the wear-resistant bulldozer drive shaft parts of the present invention, the base material of the drive shaft parts is 20CrMnTi, and the base body of the drive shaft parts is subjected to quenching, high temperature tempering, rough finishing, and then carburizing by ion plating, and then The NbTaZrC gradient coating on the surface was deposited by a composite method of ion plating and magnetron sputtering, using 2 C ion plating targets, 1 Nb magnetron sputtering target, 1 Ta magnetron sputtering target and 1 Zr magnetron sputtering target. Controlled sputtering target;

[0029] Specifically include the following steps:

[0030] (1) Processing of transmission shaft: blank of part base → quenching (840~890℃, water cooling) → high temperature tempering (510~550℃, water cooling) → roughing → semi-finishing → stress relief tempering (480~520℃, Air cooling)→finishing (surface roughness Ra0.8μm, processing size: lower tolerance limit);

[0031] ...

Embodiment 2

[0041] In the preparation method of the wear-resistant bulldozer drive shaft parts of the present invention, the base material of the bulldozer drive shaft parts is 40CrMn, and the base body of the drive shaft parts is subjected to quenching, high temperature tempering, rough finishing and carburizing treatment by ion plating method, and then The NbTaZrC gradient coating on the surface was deposited by a composite method of ion plating and magnetron sputtering, using 2 C ion plating targets, 1 Nb magnetron sputtering target, 1 Ta magnetron sputtering target and 1 Zr magnetron sputtering target. Controlled sputtering target;

[0042] Specifically include the following steps:

[0043] (1) Machining of transmission shaft: blank of part base → quenching (900~930℃, oil quenching) → high temperature tempering (540~600℃,

[0044] Air cooling)→roughing→semi-finishing→stress relief tempering (510~570℃, oil cooling)→finishing (surface roughness Ra0.8μm, processing dimension: lower tole...

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Abstract

The invention belongs to the technical field of shaft parts manufacturing, and in particular relates to a preparation method of a wear-resistant bulldozer transmission shaft. After quenching, high-temperature tempering, and rough and fine machining, the base body of the bulldozer transmission shaft is carburized by ion plating, and then The NbTaZrC gradient coating on the surface was deposited by the composite method of ion plating and magnetron sputtering. Two C ion plating targets, one Nb magnetron sputtering target, one Ta magnetron sputtering target and one Zr magnetron sputtering target were used for deposition. controlled sputtering target. The invention can improve the surface hardness of the transmission shaft of the bulldozer, enhance the adhesion performance of the deposited coating and the base body of the transmission shaft parts, thereby improving the wear resistance of the transmission shaft parts, effectively improving the surface treatment efficiency and the service life of the transmission shaft.

Description

technical field [0001] The invention belongs to the technical field of shaft parts manufacturing, and particularly relates to a preparation method of a wear-resistant bulldozer drive shaft part. Background technique [0002] Bulldozers belong to shovel and transport machinery for cyclic operation. The working conditions are extremely harsh and the working load changes drastically, resulting in a much lower service life of traditional system parts of bulldozers than construction machinery such as excavators. Therefore, the design and use of bulldozer drive system parts are more demanding. strict. The drive shaft is a mechanical part that supports gears, bearings and other rotating parts in the bulldozer drive system and rotates with them to transmit motion, torque or bending moment, and is the core component of the drive system. The failure of the transmission shaft is due to the loosening of the joint surface between it and the mating parts due to excessive wear, resulting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/06C23C8/38C23C14/32C23C14/35
CPCC23C14/0635C23C14/0084C23C14/352C23C14/3492C23C14/32C23C14/0605C23C8/38
Inventor 宋文龙索育张长茂韩冰张璇
Owner JINING UNIV
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