Anti-erosive wear and anti-cavitation corrosion impeller with nano metal ceramic coating
By applying a nano-cermetallurgical coating on the surface of the impeller, the shortcomings of the existing impellers in terms of erosion wear and cavitation corrosion are solved, and higher erosion, corrosion and wear resistance are achieved, extending the service life of the impeller.
Patent Information
- Application Number
- CN202411499741.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-02-25
AI Technical Summary
Existing impellers have shortcomings in scouring wear and cavitation corrosion, resulting in stability and service life problems.
The nano-cermet coating is used, including the base layer, the adhesive layer and the metal cermet layer, and is coated on the surface of the impeller through supersonic spraying technology to form a protective layer.
It enhances the impeller's anti-shrink, anti-cavitation corrosion, wear resistance and seawater corrosion resistance, extends the service life of the impeller, and ensures its stability during long-term continuous work.
Smart Images
Figure CN119507992A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of impellers, and in particular to an impeller with a nano-metal ceramic coating that is resistant to erosion, wear and cavitation erosion. Background Art
[0002] The impeller refers to the wheel with moving blades, which is a component of the impulse turbine rotor. The unevenness of the gas flow in the impeller accelerates or contacts with corrosive liquids (such as seawater) to cause wear. The impeller wall will become thinner due to wear, and cavitation corrosion will occur on the blade surface, which will affect the stability and reliability of the impeller during operation, as well as the service life of the impeller. Therefore, it is very important to produce an impeller that is resistant to erosion, wear and cavitation corrosion. Summary of the invention
[0003] The object of the present invention is to provide an impeller having a nano-metal ceramic coating that is resistant to erosion, wear and cavitation erosion, and solves one or more of the above-mentioned problems in the prior art.
[0004] The present invention proposes an impeller with a nano-metal ceramic coating that is resistant to erosion, wear and cavitation erosion. The impeller includes an impeller body and a nano-metal ceramic coating. The nano-metal ceramic coating includes a primer layer, an adhesive layer and a metal ceramic layer sequentially coated from the inside to the outside, and the primer layer is coated on the impeller body.
[0005] In some embodiments, the metal-ceramic layer contains nano-metal particles and nano-ceramic particles.
[0006] In some embodiments, the primer layer is nickel-chromium paint.
[0007] In some embodiments, the impeller body includes a hub and a plurality of blades disposed around the hub.
[0008] In some embodiments, the nano-metal ceramic coating is sprayed onto the impeller body by supersonic spraying.
[0009] The advantages of the erosion-resistant, wear-resistant and cavitation-resistant impeller with a nano-metal ceramic coating described in the present invention are: the nano-metal ceramic coating is applied to form a protective layer on the impeller surface, thereby enhancing the impeller's anti-erosion, anti-cavitation, wear resistance and seawater corrosion resistance, ensuring the service life of the impeller, allowing the impeller to work continuously for a long time, reducing the wear and corrosion generated during the working process, and ensuring the stability of the impeller during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the structure of an impeller having a nano-metal ceramic coating that is resistant to erosion, wear and cavitation erosion in some embodiments of the present invention;
[0011] Figure 2 Schematic diagram of the structure of nano metal ceramic coating in other embodiments of the present invention. DETAILED DESCRIPTION
[0012] In order to further clearly explain the purpose, technical solutions and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings. The accompanying drawings of the present invention are for the purpose of simple and easy-to-read structural framework diagrams and cannot limit the true purpose of the present invention.
[0013] Combination Figure 1 and Figure 2 As shown in the content, in this embodiment, an impeller with a nano-metal ceramic coating that is resistant to erosion, wear and cavitation erosion is proposed, including an impeller body 1 and a nano-metal ceramic coating. The impeller body 1 includes a hub 101 and a plurality of blades 102 arranged around the hub 101. The nano-metal ceramic coating includes a base layer 201, an adhesive layer 202 and a metal ceramic layer 203 coated in sequence from the inside to the outside. The base layer 201 is coated on the impeller body 1, and the base layer 201, the adhesive layer 202 and the metal ceramic layer 203 are coated.
[0014] The nano metal ceramic coating is sprayed onto the impeller body 1 by supersonic spraying. The base layer 201 described herein can be a nickel-chromium paint base, and the metal ceramic layer 203 contains nano metal particles and nano ceramic particles.
[0015] The above undisclosed matters can be directly implemented by using existing technologies, so they will not be described in detail here. The above is only a preferred embodiment of the present invention. It should be noted that for ordinary technicians in this field, several similar variations and improvements can be made without departing from the creative concept of the present invention, which should also be regarded as the protection scope of the present invention.
Claims
1. An impeller with a nano-metal ceramic coating that is resistant to erosion, wear and cavitation erosion, characterized in that: The impeller comprises an impeller body and a nano-metal ceramic coating, wherein the nano-metal ceramic coating comprises a primer layer, an adhesive layer and a metal ceramic layer which are sequentially coated from the inside to the outside, and the primer layer is coated on the impeller body.
2. The erosion-resistant, wear-resistant and cavitation-resistant impeller with nano-metal ceramic coating according to claim 1, characterized in that: The metal ceramic layer contains nano metal particles and nano ceramic particles.
3. The erosion-resistant, wear-resistant and cavitation-resistant impeller with nano-metal ceramic coating according to claim 1, characterized in that: The base layer is nickel-chromium paint.
4. The erosion-resistant, wear-resistant and cavitation-resistant impeller with nano-metal ceramic coating according to claim 1, characterized in that: The impeller body comprises a hub and a plurality of blades arranged around the hub.
5. The erosion-resistant, wear-resistant and cavitation-resistant impeller with nano-metal ceramic coating according to claim 1, characterized in that: The nano-metal ceramic coating is sprayed onto the impeller body by supersonic spraying.