Unlock instant, AI-driven research and patent intelligence for your innovation.

Blade tip cutting coating with equal-size enveloping and protruding boundary particles and preparation method

A technology of equal size and particle size, applied in the direction of coating, metal material coating process, melt spraying, etc., can solve the problems of weak bonding of the blade tip surface and irregular distribution of hard ceramic particles on the boundary.

Active Publication Date: 2021-01-22
XI AN JIAOTONG UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a blade tip cutting coating with prominent boundary particles of equal size envelope and its preparation method, so as to solve the irregular distribution of hard ceramic particles at the boundary of the blade tip surface and The technical problem of weak combination of blade tip and surface

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
  • Blade tip cutting coating with equal-size enveloping and protruding boundary particles and preparation method
  • Blade tip cutting coating with equal-size enveloping and protruding boundary particles and preparation method
  • Blade tip cutting coating with equal-size enveloping and protruding boundary particles and preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] A method for preparing a blade tip cutting coating with a protruding envelope of equal size of boundary particles, the specific preparation steps are as follows:

[0038] Step S1, coating the bonding alloy layer 2 on the blade tip surface 1 with a clean surface;

[0039] Step S2, fixing the blade tip surface 1 coated with the bonding alloy layer, and then placing the blade tip surface expansion plate, so that the blade tip surface and the end surface of the blade tip surface expansion plate remain flush;

[0040] Step S3, spreading hard ceramic particles 3 on the blade tip surface equipped with the blade tip surface expansion plate to ensure that the blade tip surface 1 is completely covered, and then removing the blade tip surface expansion plate;

[0041] Step S4, use a roller with a step to roll along the blade tip surface 1 for one week, so that the far-end points of more than 50% of the hard ceramic particles 3 in the large particles with a particle diameter exceed...

Embodiment 1

[0050] A blade tip cutting coating with a protruding boundary particle equal size envelope, including a Ni71CrSi bonding alloy layer and a cubic boron nitride ceramic particle layer. The cubic boron nitride particles with an average particle size of 50 μm are bonded to the Ni71CrSi bonding alloy On the blade tip surface of the nickel-based superalloy GH4037, among the hard ceramic particles of equal size enveloped at the boundary of the blade tip surface, there are more than 50% of the distance from the distal point of the large hard ceramic particles to the boundary of the blade tip surface Equal, the distance from the distal point of the large hard ceramic particles to the boundary of the tip surface is 0.1-0.25 times the average particle size of the hard ceramic particles, forming a sharp exposure of the outer edges and corners of the cubic boron nitride particles, combined with the GH4037 tip surface Robust, cutting coating with prominent boundary grains and other dimension...

Embodiment 2

[0058] A blade tip cutting coating with a protruding boundary particle equal size envelope, including a Ti20Zr25Cu10Ni bonding alloy layer and a cubic boron nitride ceramic particle layer. The cubic boron nitride particles with an average particle size of 100 μm are bonded to the On the blade tip surface of the nickel-based superalloy GH4037, among the hard ceramic particles of equal size enveloped at the boundary of the blade tip surface, there are more than 50% of the distance from the distal point of the large hard ceramic particles to the boundary of the blade tip surface Equal, the distance from the distal point of the large hard ceramic particles to the boundary of the tip surface is 0.1-0.25 times the average particle size of the hard ceramic particles, forming a sharp exposure of the outer edges and corners of the cubic boron nitride particles, combined with the GH4037 tip surface Robust, cutting coating with prominent boundary grains and other dimensions. The concrete...

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
Outer diameteraaaaaaaaaa
The inside diameter ofaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a cutting coating with equal-size enveloping and protruding boundary particles and a preparation method of the cutting coating, and belongs to the technical field of material surface modification and coatings. A blade tip cutting coating with equal-size enveloping and protruding boundary particles comprises a bonding alloy layer and hard ceramic particles, one part of the hard ceramic particles are combined to a blade tip end face through the bonding alloy layer, and the other part of the hard ceramic particles envelop the boundary of the blade tip end face in an equal-size mode and protrude out of the boundary of the blade tip end face. The distances from the far end points of more than 50% of the large hard ceramic particles enveloped at the boundary of the bladetip end face in an equal-size mode to the boundary of the blade tip end face are equal, and the distances from the far end points of the large hard ceramic particles to the boundary of the blade tip end face are 0.1-0.25 time of the average particle size of the hard ceramic particles. Equal-size enveloping protruding parts of boundary particles of the hard ceramic particles not only guarantee thatthe coating can effectively protect the blade tip, but also guarantee that the cut coating on the inner wall of a casing is flush, and the sealing effect is good.

Description

technical field [0001] The invention relates to the technical field of material surface modification and coating, in particular to a cutting coating with protruding enveloping boundary particles and a preparation method thereof. Background technique [0002] With the intensification of the energy crisis, improving engine efficiency and reducing fuel consumption have become one of the current research hotspots of aero-engines. In modern aeronautical gas turbine engines, tip clearance has a great influence on compressor and turbine efficiency. Studies have shown that for every 1% increase in blade tip clearance, the efficiency will decrease by about 1.5%; and for every 1% decrease in efficiency, the fuel consumption rate will increase by about 2%. Therefore, reducing the tip clearance is an effective way to improve engine efficiency and reduce fuel consumption. However, the blade tip clearance should not be too small, because too small clearance will cause scraping and wear ...

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
IPC IPC(8): C23C4/134C23C4/137C23C4/18C23C4/06C23C4/08
CPCC23C4/134C23C4/137C23C4/18C23C4/06C23C4/08
Inventor 杨冠军石秋生刘梅军赵梦琪李长久
Owner XI AN JIAOTONG UNIV