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

A process method for aluminizing the inner cavity and outer surface of a cobalt-based alloy blade

A technology of cobalt-based alloy and process method, which is applied in the field of heat treatment, can solve problems such as shallow penetration layer depth and uncontrollable gas method, and achieve the effects of improving oxidation resistance, wide application value, and prolonging service life

Active Publication Date: 2017-12-08
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gas method is consistent with the chemical vapor deposition method in principle, but the gas method is uncontrollable and the depth of the infiltrated layer is shallow

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
  • A process method for aluminizing the inner cavity and outer surface of a cobalt-based alloy blade
  • A process method for aluminizing the inner cavity and outer surface of a cobalt-based alloy blade
  • A process method for aluminizing the inner cavity and outer surface of a cobalt-based alloy blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this embodiment, in order to improve the anti-oxidation and anti-corrosion properties of the blade surface, the process of aluminizing the inner cavity and outer surface of the cobalt-based alloy blade is carried out according to the following steps:

[0031] 1. Preparation of aluminum particles

[0032] Appropriate amount of aluminum particles is spread in the reactor (generating reactor outside the reaction chamber and generating reactor inside the reaction chamber).

[0033] 2. Parts preparation

[0034] (1) Use a liquid sand blasting machine to perform water blasting treatment on the parts to be deposited on the coating to remove the surface oxide layer;

[0035] (2) Put the parts in a water-based detergent solution with a mass fraction of 8%, use an ultrasonic cleaner to ultrasonically clean them for 25 minutes, rinse them with clean water, dehydrate them with absolute ethanol, and dry them with a hair dryer;

[0036] (3) Install the parts on the fixture, and ...

Embodiment 2

[0043] In this embodiment, in order to improve the anti-oxidation and anti-corrosion properties of the blade surface, the process of aluminizing the inner cavity and outer surface of the cobalt-based alloy blade is carried out according to the following steps:

[0044] 1. Preparation of aluminum particles

[0045] Appropriate amount of aluminum particles is spread in the reactor (generating reactor outside the reaction chamber and generating reactor inside the reaction chamber).

[0046] 2. Parts preparation

[0047] (1) Use a liquid sand blasting machine to perform water blasting treatment on the parts to be deposited on the coating to remove the surface oxide layer;

[0048] (2) Put the parts in a water-based cleaning agent solution with a mass fraction of 5%, use an ultrasonic cleaner to ultrasonically clean them for 20 minutes, rinse them with clean water, dehydrate them with absolute ethanol, and dry them with a hair dryer;

[0049] (3) Install the parts on the fixture....

Embodiment 3

[0056] In this embodiment, in order to improve the anti-oxidation and anti-corrosion properties of the blade surface, the process of aluminizing the inner cavity and outer surface of the cobalt-based alloy blade is carried out according to the following steps:

[0057] 1. Preparation of aluminum particles

[0058] Appropriate amount of aluminum particles is spread in the reactor (generating reactor outside the reaction chamber and generating reactor inside the reaction chamber).

[0059] 2. Parts preparation

[0060] (1) Use a liquid sand blasting machine to perform water blasting treatment on the parts to be deposited on the coating to remove the surface oxide layer;

[0061] (2) Put the parts in a water-based cleaning agent solution with a mass fraction of 10%, use an ultrasonic cleaner to ultrasonically clean them for 30 minutes, rinse them with clean water, dehydrate them with absolute ethanol, and dry them with a hair dryer;

[0062] (3) Install the parts on the fixture...

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
depthaaaaaaaaaa
depthaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of heat treatment, in particular to a process method for aluminizing the inner cavity and the outer surface of a cobalt-based alloy blade. The high-pressure turbine guide vane of the engine is made of DZ40M cobalt-based casting alloy. It is an important hot-end part of the aero-engine. The working environment is relatively harsh. Technology, that is, the aluminized layer is prepared on the surface of the inner cavity and outer flow channel of the high guide vane at the same time to improve the reliability and service life of the blade. The method of the invention can meet the design and manufacture requirements of the high-pressure turbine guide vane of the engine, the depth of the aluminized layer on the surface of the outer flow channel of the high guide vane is 0.02mm-0.055mm, and the depth of the aluminized layer in the inner cavity is 0.01mm-0.035mm. The effect of chemical vapor deposition aluminizing on the surface of the blade is remarkable, the oxidation resistance of the blade is twice as high as that of the substrate, and the corrosion resistance is doubled, prolonging the service life of the blade.

Description

technical field [0001] The invention belongs to the field of heat treatment, in particular to a process method for aluminizing the inner cavity and the outer surface of a cobalt-based alloy blade. Background technique [0002] Engine high-pressure turbine guide vanes are important hot-end components of aero-engines. Under working conditions, high-temperature oxidation and corrosion phenomena exist on the surface of the guide vanes, especially the internal cavity corrosion and oxidation of the blades, which have become a technical problem in engine design. In order to improve the reliability of the blade and prolong the service life of the blade, the surface of the inner and outer flow channels of the high guide vane adopts high temperature protection technology at the same time, that is, an aluminized layer with a depth of 0.02mm to 0.055mm is prepared on the surface of the outer flow channel of the high guide vane, and the inner cavity is prepared 0.01mm~0.035mm aluminized ...

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): C23C16/12C23C16/02C22C19/07
Inventor 牛静张尊礼陈仲强刘艳张平
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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