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

Surface composite coating of turbomachine rotor blade and preparation method thereof

A technology of rotor blades, turbomachinery, applied in the direction of mechanical equipment, supporting elements of blades, coatings, etc.

Active Publication Date: 2008-09-17
XIAN SHAANGU POWER
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem of early failure of turbomachinery flow parts (such as blades, etc.) due to corrosion and wear under complex working conditions of high stress, high temperature, corrosive environment, and the synergistic effect of high-speed airflow containing hard particles , providing a composite coating on the surface of a turbomachinery rotor blade and a preparation method thereof, the method prepares a three-layer composite coating on a turbomachinery rotor blade, which can effectively protect the surface of a turbomachinery rotor blade

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
  • Surface composite coating of turbomachine rotor blade and preparation method thereof
  • Surface composite coating of turbomachine rotor blade and preparation method thereof
  • Surface composite coating of turbomachine rotor blade and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A composite coating on the surface of a turbomachinery rotor blade is characterized in that the prepared composite coating is divided into a bonding bottom layer, an intermediate corrosion-resistant alloy layer and a cermet hard wear-resistant outer layer; wherein:

[0022] The hard and wear-resistant outer layer of cermet, the spraying material is coated with cobalt (Co) with a mass fraction of 12%, the grain size is 1 μm to 3 μm, and the mass fraction is 88% tungsten carbide (WC), which is agglomerated and sintered Cobalt-coated tungsten carbide composite powder with a particle size of 400 mesh to 500 mesh prepared by the method.

[0023] The intermediate corrosion-resistant alloy layer is sprayed with 55% nickel (Ni) and 45% chromium (Cr) as raw materials for spraying. The alloy powder is prepared by metallurgical methods with a particle size of 300-400 mesh.

[0024] Adhesive bottom layer, the spraying raw materials are nickel (Ni) with a mass fraction of 75%, chrom...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
crystal sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a surface composite coat of the blade on rotor and relative production, wherein, the composite coat is divided into adhesive bottom, middle corrosion-resistance alloy layer and metal ceramic rigid abrasion-resistance layer. The invention utilizes high-energy plasma coater and ultrasonic plasma injector, via ultrasonic plasma coating technique to coat aforementioned three layers on the base of blade; then seal the outer face via macromolecule sealing agent as polyurethane or acrylic acid. The thickness of metal ceramic rigid abrasion-resistance layer is 0.12mm, the thickness of middle corrosion-resistant alloy layer is 0.08mm, and the thickness of bottom adhesive layer is 0.05mm. The invention can improve the corrosion resistance and abrasion resistance of blade.

Description

technical field [0001] The invention relates to a method for preparing a surface composite coating, in particular to a composite coating for anti-corrosion and anti-wear on the surface of a turbine rotor blade and a preparation method thereof. Three layers of coatings with different functions are prepared on the surface, which makes the turbine blades have excellent anti-corrosion and wear-resistant properties. Background technique [0002] Turbomachinery relies on the high-speed rotation of the rotor and the work of the blades to achieve a certain gas flow and pressure. These gases are usually air, gas or other industrial gases (such as H 2 , CH 4 , CO, N 2 , CO 2 , C 2 h 4 , O 2 , H 2 S, NH 3 , tar, naphthalene, etc.), has a high temperature, a certain degree of corrosion, and sometimes the gas contains a certain amount of hard particles (such as dust, etc.), which will cause corrosion, erosion and wear to the high-speed rotating turbine blades . It affects the o...

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): F01D5/28C23C24/00C23C4/00C22C29/08C23C4/06C23C4/073C23C4/134
Inventor 韩增福韩志海
Owner XIAN SHAANGU POWER
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