Manufacturing method of wear-resistant cylinder liner based on surface treatment

A technology of surface treatment and manufacturing method, which is applied in the direction of coating, fusion spraying, metal material coating process, etc., can solve the problems such as difficult to ensure the width of the hardened zone, uneven laser hardening, etc., to improve the spraying process and improve wear resistance performance and emission reduction

Active Publication Date: 2021-12-07
福建汇华集团东南汽车缸套有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the internal metal structure of sand casting is relatively loose, after laser treatment, the width of the hardened zone is not easy to ensure, the laser hardening is uneven, and the metal surface with light hole-like defects is prone to appear.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0031] SS01: Pretreatment: Grind the cylinder liner base on 500# water sandpaper until the surface is smooth without scratches, and degrease and activate the piston ring base; the weight percentage of each component of the cylinder liner base is as follows: C: 1.25% , Si: 0.25%, Mn: 0.6%, S: 0.003%, P: 0.004%, Nb: 0.15%, Ni: 0.19%, Mo: 0.84%, Cr: 8.2%, V: 0.07%, W: 0.02% , the rest is Fe;

[0032] SS02: Spray adhesive layer: use plasma spraying equipment to spray a layer of TiN layer on the surface of the cylinder liner substrate, the thickness of the TiN layer is 0.03mm, and the spraying distance is 145mm; when spraying, the current of the arc is set to 440A, and the voltage It is set to 68V; the powder used for spraying the TiN layer is Ti alloy powder, and the weight percentages of the components of Ti alloy powder are as follows: Ti: 82%, Fe: 0.03%, Cr: 3%, Si: 0.015%, C: 0.004% , Al: 0.008%, N: 0.03%;

[0033] SS03: Preheating: heating the workpiece to 110°C;

[0034] ...

specific Embodiment 2

[0038]SS01: Pretreatment: Grind the base of the cylinder liner on 400-800# water sandpaper until the surface is smooth without scratches, and degrease and activate the base of the piston ring; the weight percentage of each component of the base of the cylinder liner is as follows: C: 1.25~2.78%, Si: 0.25~0.6%, Mn: 0.6~0.9%, S: 0.003~0.005%, P: 0.004~0.007%, Nb: 0.15~0.22%, Ni: 0.19~0.38%, Mo: 0.84 ~1.57%, Cr: 8.2~10.5%, V: 0.07~0.13%, W: 0.02~0.05%, the rest is Fe;

[0039] SS02: Spraying adhesive layer: Spray a layer of TiN layer on the surface of the cylinder liner substrate with plasma spraying equipment, the thickness of the TiN layer is 0.03-0.045mm, and the spraying distance is 145-150mm; when spraying, the arc current is set The voltage is 440-455A, and the voltage is set at 68-70V; the powder used for spraying the TiN layer is Ti alloy powder, and the weight percentage of each component of the Ti alloy powder is as follows: Ti: 82-87.5%, Fe: 0.03-0.065%, Cr: 3-3.5%, S...

specific Embodiment 3

[0046] SS01: Pretreatment: Grind the base of the cylinder liner on 400-800# water sandpaper until the surface is smooth without scratches, and degrease and activate the base of the piston ring; the weight percentage of each component of the base of the cylinder liner is as follows: C: 1.25~2.78%, Si: 0.25~0.6%, Mn: 0.6~0.9%, S: 0.003~0.005%, P: 0.004~0.007%, Nb: 0.15~0.22%, Ni: 0.19~0.38%, Mo: 0.84 ~1.57%, Cr: 8.2~10.5%, V: 0.07~0.13%, W: 0.02~0.05%, the rest is Fe;

[0047] SS02: Spraying adhesive layer: Spray a layer of TiN layer on the surface of the cylinder liner substrate with plasma spraying equipment, the thickness of the TiN layer is 0.03-0.045mm, and the spraying distance is 145-150mm; when spraying, the arc current is set The voltage is 440-455A, and the voltage is set at 68-70V; the powder used for spraying the TiN layer is Ti alloy powder, and the weight percentage of each component of the Ti alloy powder is as follows: Ti: 82-87.5%, Fe: 0.03-0.065%, Cr: 3-3.5%, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
thicknessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for manufacturing a wear-resistant cylinder liner based on surface treatment, and relates to the technical field of diesel engine accessories. The invention comprises the following steps: pretreatment of the cylinder liner substrate, spraying a 0.03-0.045mm thick TiN bonding layer, preheating, spraying a 0.23-0.26mm thick Cr3C2-NiCr ceramic coating, and heat-treating the workpiece after spraying . The invention uses the wear-resistant surface treatment technology of the alloy to spray ceramic coating on the surface of the cylinder liner substrate, reasonably improves the spraying process, improves the wear resistance of the cylinder liner, prolongs the service life of diesel engine parts, and improves fuel efficiency. The efficiency reduces the emission of sulfur oxides and nitrogen oxides in the exhaust gas of diesel engines, protects the environment and reduces the cost of use.

Description

technical field [0001] The invention belongs to the technical field of diesel engine accessories, in particular to a method for manufacturing a wear-resistant cylinder liner based on surface treatment. Background technique [0002] The cylinder liner is the part of the internal combustion engine that works under the worst working conditions. It not only bears strong mechanical and thermal loads, but also is subject to various restrictions on lubrication conditions. Therefore, the service life of the cylinder liner basically determines the overhaul period of the internal combustion engine. The material and casting process of the cylinder liner have an important influence on the selection of surface processing technology and its parameters. When selecting a surface processing technology, various factors must be considered. Otherwise, choosing an improper processing technology will lead to a decrease in the service life of the cylinder liner. [0003] Laser hardening is only su...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/134C23C4/10C23C4/06C23C4/02C22C38/02C22C38/04C22C38/44C22C38/46C22C38/48C22C38/56C22C37/10C22C37/08
CPCC22C37/08C22C37/10C22C38/002C22C38/02C22C38/04C22C38/44C22C38/46C22C38/48C22C38/56C23C4/02C23C4/06C23C4/10C23C4/134
Inventor 赵明
Owner 福建汇华集团东南汽车缸套有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap