CN202895813U - Cavitation corrosion-resistant composite material layer - Google Patents
Cavitation corrosion-resistant composite material layer Download PDFInfo
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- CN202895813U CN202895813U CN 201220475911 CN201220475911U CN202895813U CN 202895813 U CN202895813 U CN 202895813U CN 201220475911 CN201220475911 CN 201220475911 CN 201220475911 U CN201220475911 U CN 201220475911U CN 202895813 U CN202895813 U CN 202895813U
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- cavitation corrosion
- metal coating
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Abstract
The utility model relates to a cavitation corrosion-resistant composite material layer, which is provided with a substrate layer. A Ni-based metal coating is arranged on the substrate layer. An epoxy resin layer is arranged on the Ni-based metal coating. The substrate layer is a sand-blast layer. The roughness of the substrate layer is 40 to 80 microns. The thickness of the Ni-based metal coating is 100 to 700 microns. The Ni-based metal coating is arranged on the rough substrate layer, so that the degree of bonding between a material and a substrate is ensured; and by the epoxy resin layer, surface pores can be filled, so that the damage degree of cavitation corrosion is effectively reduced.
Description
Technical field
The utility model relates to the multiple layer of a kind of protective coating, particularly relates to a kind of anti-cavitation corrosion composite layer.
Background technology
Cavitation phenomenons during greater than permissible suction head, occurs at suction vacuum in pump.Mainly occur in impeller outer edge blade and cover plate, volute or guide wheel place can not occur in blade import department.Occur in the blade import when for example flow is greater than design discharge near the face of blade place (K1) of front shroud.When impeller eye place pressure drops to by the saturated vapor pressure of liquor charging body under operating temperature, the part vaporization will occur in liquid, the bubble that generates will enter the higher-pressure region from low-pressure area with liquid, can sharply shrink at the higher-pressure region bubble, condense, the liquid around it rushes at the shared space of former bubble with high speed, produces high-intensity shock wave, impact impeller and pump case, noise occurs cause vibrations.Because be subject to for a long time the chemical attack effect of trace dissolved oxygen in impulsive force repeated action and the liquid, the impeller local surfaces spot occurs with crackle even becomes spongy damage.The existence of cavitation can produce the noise of 600 ~ 25000Hz and the damage that vibration causes flow passage components, lowers efficiency, and causes chemical attack.
The utility model content
Main purpose of the present utility model is, a kind of novel anti-cavitation corrosion composite layer is provided, and technical problem to be solved is, slows down to greatest extent the cavitation damage degree, energy savings, thus more be suitable for practicality, and have the value on the industry.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.A kind of anti-cavitation corrosion composite layer according to the utility model proposes is provided with basalis, is provided with Ni Base Metal coating on the described basalis, is provided with epoxy resin layer on the described Ni Base Metal coating.
The aforementioned substrates layer is the sandblast layer.
The aforementioned substrates bed roughness is 40 ~ 80 μ m.
Aforementioned Ni Base Metal coating layer thickness is 100 ~ 700 μ m.
By technique scheme, anti-cavitation corrosion composite layer of the present utility model has following advantages at least:
At coarse basalis Ni Base Metal coating is set, has guaranteed the combination degree of material and matrix, epoxy resin layer can be filled up the surface pore, effectively reduces the destructiveness of cavitation corrosion.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and cooperate accompanying drawing to be described in detail as follows.
Description of drawings
Fig. 1 is the structural representation of the anti-cavitation corrosion composite layer of the utility model.
The specific embodiment
Be to reach technological means and the effect that predetermined utility model purpose is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, the specific embodiment of the present utility model be described in detail as follows.
The anti-cavitation corrosion composite layer of the utility model as shown in Figure 1 structural representation, being provided with roughness is the basalis 1 of 50 μ m, basalis 1 is the sandblast layer, at basalis 1 the Ni Base Metal coating 2 that thickness is 500 μ m is set, be provided with epoxy resin layer 3 on the Ni Base Metal coating 2, in order to fill up the hole on Ni Base Metal coating 2 surfaces.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. an anti-cavitation corrosion composite layer is characterized in that: be provided with basalis, be provided with Ni Base Metal coating on the described basalis, be provided with epoxy resin layer on the described Ni Base Metal coating.
2. anti-cavitation corrosion composite layer according to claim 1, it is characterized in that: described basalis is the sandblast layer.
3. anti-cavitation corrosion composite layer according to claim 1, it is characterized in that: described basalis roughness is 40 ~ 80 μ m.
4. anti-cavitation corrosion composite coating according to claim 1, it is characterized in that: described Ni Base Metal coating layer thickness is 100 ~ 700 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220475911 CN202895813U (en) | 2012-09-18 | 2012-09-18 | Cavitation corrosion-resistant composite material layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220475911 CN202895813U (en) | 2012-09-18 | 2012-09-18 | Cavitation corrosion-resistant composite material layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202895813U true CN202895813U (en) | 2013-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220475911 Expired - Fee Related CN202895813U (en) | 2012-09-18 | 2012-09-18 | Cavitation corrosion-resistant composite material layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202895813U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587968A (en) * | 2017-08-09 | 2018-01-16 | 浙江大学 | A kind of anti-cavitation corrosion structural facer |
| DE112021002168T5 (en) | 2021-06-15 | 2023-03-16 | China Gezhouba Group No. 1 Engineering Co., Ltd. | Anti-cavitation erosion device for hydraulic structures and construction processes |
-
2012
- 2012-09-18 CN CN 201220475911 patent/CN202895813U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587968A (en) * | 2017-08-09 | 2018-01-16 | 浙江大学 | A kind of anti-cavitation corrosion structural facer |
| CN107587968B (en) * | 2017-08-09 | 2020-08-18 | 浙江大学 | Cavitation erosion resistant structure surface layer |
| DE112021002168T5 (en) | 2021-06-15 | 2023-03-16 | China Gezhouba Group No. 1 Engineering Co., Ltd. | Anti-cavitation erosion device for hydraulic structures and construction processes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20130918 |