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Cylinder sleeve salt bath nitridation process

A salt-bath nitriding and cylinder liner technology, which is applied in metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of inaccurate process requirements, insufficient product precision, and insufficient process flow, etc. Rigorous process and good effect

Inactive Publication Date: 2011-08-24
DALIAN BINCHENG PISTON MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional cylinder liner salt bath nitriding process, because the process flow is not fine enough, and the process requirements in the artificial aging link are not accurate, resulting in insufficient precision and poor quality of the products processed by this process

Method used

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  • Cylinder sleeve salt bath nitridation process
  • Cylinder sleeve salt bath nitridation process

Examples

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Embodiment Construction

[0016] Such as figure 1 As shown, the salt bath nitriding process of the cylinder liner of the present invention includes the following steps: a. Pretreatment and cleaning of the workpiece. Before cleaning, the surface of the workpiece should be observed for rust and difficult-to-clean grease. If there is dirt such as grease, it should be Remove the rust by hand. The rust should be pickled or wiped with 1:1 hydrochloric acid. The pickled or wiped surface must be neutralized with sodium carbonate and then Na 2 CO 3 Rinse with clean water, hoist the pre-cleaned workpiece into a special appliance or a single-piece hanger, put it in the cleaning tank and move it up and down for 2-3 minutes, and observe whether there is oil or dirt, otherwise, the cleaning time should be further extended , Or to increase the concentration of the cleaning solution, either liquid or solid can be used for the cleaning solution, with a concentration of 1-5%, which can be adjusted according to the cleanin...

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PUM

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Abstract

The invention discloses a cylinder sleeve salt bath nitridation process, which comprises the following steps of: a, workpiece pretreatment and cleaning, namely putting a workpiece to be cleaned into a cleaning tank and cleaning the workpiece by using cleaning solution; b, workpiece preheating at the temperature of between 300 and 400 DEG C; c, workpiece salt bath nitridation, namely putting the workpiece into a salt bath furnace and performing salt bath nitridation treatment; d, workpiece oxidation treatment, namely putting the workpiece into an oxidation furnace and performing oxidation treatment; e, cleaning of the treated workpiece; and f, oil immersion. The cylinder sleeve salt bath nitridation process has strict and elaborate process flows and good salt bath nitridation effect.

Description

Technical field [0001] The invention relates to a salt bath nitriding process for a cylinder liner. Background technique [0002] In the traditional salt bath nitriding process of cylinder liners, the process flow is not refined enough, and the process requirements in the artificial aging process are not precise, resulting in insufficient accuracy and poor quality of the products processed by this process. Summary of the invention [0003] The purpose of the present invention is to provide a salt bath nitriding process for cylinder liners. [0004] The technical solution adopted by the present invention to achieve the above objective is: a cylinder liner salt bath nitriding process, which includes the following steps: [0005] Step a, pre-treatment and cleaning of the workpiece, put the pre-cleaned workpiece into the cleaning tank and clean it with a cleaning fluid; [0006] Step b, preheating the workpiece, the preheating temperature of the workpiece is 300-400C°; [0007] Step c, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/50C23C8/80
Inventor 邵其浩
Owner DALIAN BINCHENG PISTON MFG
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