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Method for preparing wear-resistant and corrosion-resistant thin layer on jar cylinder sleeve

A technology of jars and cylinder liners, which is applied in coatings, solid-state diffusion coatings, metal material coating processes, etc., can solve problems such as high anti-corrosion requirements, pollute the environment, and harm the human body, and achieve low friction coefficient and surface Effect of high hardness and high surface electrode potential

Pending Publication Date: 2022-04-08
GUIZHOU GAOFENG GASOLINEEUM MACHINERY
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  • Description
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AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for preparing a wear-resistant and corrosion-resistant thin layer on the cylinder liner of the jar to solve the problem that the traditional process is harmful to the human body, pollutes the environment, and is not suitable for the advocacy of the national green development concept. Cladding technology or plasma cladding technology, the cladding layer is limited by the powder and cannot meet the requirements of high wear resistance (≥65HRC) and high corrosion resistance

Method used

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Embodiment

[0011] This embodiment provides a method for preparing a wear-resistant and corrosion-resistant thin layer on the cylinder liner of the jar. The principle of the method is to select high-quality medium-carbon alloy steel for the cylinder liner material of the jar and perform quenching and tempering treatment to improve the strength and Toughness and other comprehensive mechanical properties, and then use the QPQ salt bath composite treatment technology to carry out low-temperature salt bath nitrocarburizing + salt bath oxidation on the inner surface of the cylinder liner, so as to improve the wear resistance and corrosion resistance of the inner surface of the cylinder liner.

[0012] The specific process is as follows:

[0013] 1) For the selection of the raw material of the jar liner, ensure that its quenching and tempering temperature should be higher than the QPQ treatment temperature, so as to avoid the subsequent QPQ treatment from reducing the mechanical properties of th...

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Abstract

The invention provides a method for preparing a wear-resistant and corrosion-resistant thin layer on a jar cylinder sleeve. Raw materials of the jar cylinder sleeve are selected on the basis of the principle that the tempering temperature is higher than the QPQ treatment temperature. Carrying out thermal refining on the jar cylinder sleeve; qPQ treatment is conducted, specifically, salt bath composite treatment is conducted on the inner surface of the cylinder sleeve through a QPQ production line; and after QPQ treatment, turning off a QPQ hardened layer at the thread of the cylinder sleeve joint pipe. The problems that a traditional technology harms human bodies, pollutes the environment and is not suitable for advocating the national green development concept, and according to an existing inner hole laser cladding technology or an existing inner hole plasma cladding technology, a cladding layer is limited by powder and cannot meet the requirements for high abrasion resistance (larger than or equal to 65 HRC) and high corrosion resistance are solved. Belongs to the technical field of jar processing.

Description

technical field [0001] The invention relates to a method for preparing a wear-resistant and corrosion-resistant thin layer on a jar sleeve, and belongs to the technical field of jar processing. Background technique [0002] Traditional cylinder liners are generally treated with chrome plating, but the chrome plating process is harmful to the human body and pollutes the environment. The limitations cannot meet the requirements of high wear resistance (≥65HRC) and high corrosion resistance. Contents of the invention [0003] The invention provides a method for preparing a wear-resistant and corrosion-resistant thin layer on the cylinder liner of the jar to solve the problem that the traditional process is harmful to the human body, pollutes the environment, and is not suitable for the advocacy of the national green development concept. Cladding technology or plasma cladding technology, the cladding layer is limited by the powder and cannot meet the problem of high wear resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/58
Inventor 梁柔王凌补声军郑俊民王文张泽丽宋大贤
Owner GUIZHOU GAOFENG GASOLINEEUM MACHINERY
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