Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Composite surface reinforcement method capable of considering erosion resistance and anti-fatigue property of metal material

A metal material and composite surface technology, applied in the direction of metal material coating process, ion implantation plating, coating, etc., can solve the problems of easy cracks, high hardness and poor toughness of the wear-resistant protective film layer, and achieve increased bonding The effect of intensity

Inactive Publication Date: 2020-08-28
NORTHWESTERN POLYTECHNICAL UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The People's Republic of China patent CN 110983242 A (application publication number) combines ion nitriding and electric arc plating to prepare a TiN coating with good wear resistance. Cracks are easily generated in the environment and reduce the fatigue resistance of metal substrates, which has been the main reason for limiting the further application of plasma arc deposition ceramic coatings on engine blades and automobile hubs

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite surface reinforcement method capable of considering erosion resistance and anti-fatigue property of metal material
  • Composite surface reinforcement method capable of considering erosion resistance and anti-fatigue property of metal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The TC4 titanium alloy was processed into Φ30×4mm discs and rotating bending fatigue specimens (according to the standard "HB5152-96 metal room temperature rotating bending fatigue test method"), and the plasma-enhanced deposition technology was used to prepare ceramics on the surface of the titanium alloy. Before the metal composite film layer, the surface is strengthened and pretreated with the help of high-energy ultrasonic finishing and strengthening technology, and the strengthened titanium alloy sample is ultrasonically cleaned and dried for use. The titanium alloy high-energy ultrasonic finishing and strengthening treatment steps are as follows: fix the fatigue sample on the CNC lathe with a triangular clamp and thimble, adjust the axis position of the fatigue sample and the ultrasonic strengthening tool ball head to ensure that the center of the ball head is level with the axis of the fatigue sample , Then set the lathe axial feed (0.2mm / r), speed (130r / min) and s...

Embodiment 2

[0033] The 17-4PH stainless steel was processed into Φ30×4mm discs and rotating bending fatigue specimens (according to the standard "HB5152-96 metal room temperature rotating bending fatigue test method"), and plasma-enhanced deposition technology was used on the surface of 17-4PH steel Before preparing the ceramic / metal composite film layer, the surface is strengthened and pretreated with the help of high-energy ultrasonic finishing and strengthening technology, and the strengthened stainless steel sample is ultrasonically cleaned and dried for use. The stainless steel high-energy ultrasonic finishing and strengthening treatment steps are as follows: fix the fatigue sample on the CNC lathe with a triangular clamp and thimble, adjust the axis position of the fatigue sample and the ultrasonic strengthening tool ball head to ensure that the center of the ball head is level with the axis of the fatigue sample Then set the lathe axial feed (0.15mm / r), speed (140r / min) and static pr...

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
surface roughnessaaaaaaaaaa
depthaaaaaaaaaa
depthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a composite surface reinforcement method capable of considering erosion resistance and anti-fatigue property of a metal material, and belongs to the field of metal material surface coating layer and modification. The method comprises the following steps: firstly, pretreating the surface of a titanium alloy or steel sample by a high-energy ultrasonic finishing reinforcementtechnology to form a gradient structure on the surface layer of titanium alloy or steel and introduce a residual compressive stress layer; and then preparing a ceramic / metal composite structural coating by a plasma enhanced deposition technology. Through combination of the plasma enhanced deposition ceramic / metal laminated technology and the high-energy finishing enhancement technology, on one hand, the titanium alloy or steel is subjected to high-energy ultrasonic reinforcement treatment by a spherical tool head capable of rolling freely to obtain a gradient layer structure with low surfaceroughness (0.1 to 0.2 um), and on the other hand, a composite ceramic layer with solid particle erosion resistance more excellent than that of a titanium alloy or steel matrix is obtained by controlling the plating time and the cycle period of the composite coating metal layer and the ceramic layer.

Description

Technical field [0001] The invention belongs to the field of metal material surface coating and modification, and is used for the surface coating of important load-bearing parts of aero-engines and automobile wheels such as titanium alloy, steel, etc., and specifically relates to a composite surface that takes into account both erosion resistance and fatigue resistance of metal materials Strengthening method. Background technique [0002] Metal materials such as titanium alloys, stainless steels and nickel-based alloys have been widely used in power equipment such as aero engines due to their excellent comprehensive properties. However, these metal structural parts are often damaged by sand erosion during service. Corrosion pits or notches are formed on the surface, and fatigue fracture occurs early due to the local stress concentration at the bottom of the pits during the stress process, which seriously affects the service safety and life of these metal structures. [0003] The p...

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 Applications(China)
IPC IPC(8): C23C14/02C23C14/06C23C14/16C23C14/34
CPCC23C14/0036C23C14/022C23C14/025C23C14/0641C23C14/165C23C14/3435
Inventor 刘道新马阿敏张晓化王若磊何光宇
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com