CN208221176U - A kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching - Google Patents
A kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching Download PDFInfo
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- CN208221176U CN208221176U CN201721909557.2U CN201721909557U CN208221176U CN 208221176 U CN208221176 U CN 208221176U CN 201721909557 U CN201721909557 U CN 201721909557U CN 208221176 U CN208221176 U CN 208221176U
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Abstract
The utility model discloses a kind of hot-rolling water circulating pump impellers with high-performance antiscour wear-resistant nano coating resistant to chemical etching; it is related to a kind of steel mill's hot rolling book circulating pump impeller; it includes impeller body, is provided with nanostructure protective layer (200) on the working face (110) of flat impeller body (100).The hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching of the utility model, so that the antiscour of flat impeller working face wear-resistant service life resistant to chemical etching is improved to original 5 times or more, it is significantly longer than the service life of hot-rolling water circulating pump impeller in the prior art, impeller is continued working for a long time, improve the stability of electric current, production cost is reduced, is improved work efficiency.
Description
Technical field
The utility model relates to the hot-rolling water circulating pump impellers more particularly to a kind of tool of a kind of steel mill's energy ring portion water supply subsidiary factory
There is the hot-rolling water circulating pump impeller of high-performance antiscour wear-resistant nano coating resistant to chemical etching.
Background technique
Hot rolling mill circulation pump group water supply is mainly used for rolling mill roll cooling, electric power 1120KW.Impeller is circulation
The critical component of pump, its actual life determine the service life of pump.Basic material of blade is medium carbon steel, scour resistance and resistant to chemical etching
Property it is poor, cause impeller blade to be thinned in use, cavitation erosion, cracking, seriously corroded and breaking-up, shutdowns replacement in average 3 months is once
Impeller seriously affects working efficiency and production direct motion.And after impeller cavitation erosion, water-aspirator pressure, water yield reduce, since water pump is simultaneously
Through transport row, after pump output pressure reduces, water pump medium cannot be exported effectively, and generation is escaped to pump phenomenon, cause shadow to entire unit
It rings.
Utility model content
Problem to be solved in the utility model is for present in the above-mentioned circulating pump impeller of hot-rolling water in the prior art
Defect provides a kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching.
To achieve the above object, the utility model uses following technical scheme:
The first aspect of the utility model is to provide a kind of with high-performance antiscour wear-resistant nanometer resistant to chemical etching
The hot-rolling water circulating pump impeller of coating is provided with nanostructure protective layer 200 on the working face 110 of flat impeller body 100.
Further, in the hot-rolling water circulation with high-performance antiscour wear-resistant nano coating resistant to chemical etching
On impeller of pump, the nanostructure protective layer 200 is prepared using metal-ceramic composite powder end.
It is further preferred that in the hot-rolling water with high-performance antiscour wear-resistant nano coating resistant to chemical etching
On circulating pump impeller, the metal-ceramic composite powder end is using metal as Binder Phase, and using ceramic particle as reinforcing
Hard phase is made through process such as oversintering, reunion, claddings.
Further more preferably, in the heat with high-performance antiscour wear-resistant nano coating resistant to chemical etching
On squezzing circulating pump impeller, nickel-based aluminum oxide, tungsten carbide of nickel-base or Ni-based chromium are adopted in the metal-ceramic composite powder end.
It is further preferred that in the hot rolling with high-performance antiscour wear-resistant nano coating resistant to chemical etching
On water-circulating pump impeller, the nanostructure protective layer 200 uses plasma spraying, spraying by the metal-ceramic composite powder end
Process conditions include hydrogen and argon flow, spray distance, spray angle, powder supply rate and the flow of carrier gas, electric arc power,
Adjusting control, the control of the flow of plasma water and substrate temperature of Current Voltage.
Further, in the hot-rolling water circulation with high-performance antiscour wear-resistant nano coating resistant to chemical etching
On impeller of pump, the nanostructure protective layer 200 with a thickness of 200-350 μm.
Further, in the hot-rolling water circulation with high-performance antiscour wear-resistant nano coating resistant to chemical etching
On impeller of pump, the flat impeller 100 is the impeller of steel mill's energy ring portion hot rolling water-circulating pump.
The second aspect of the utility model is to provide a kind of hot-rolling water circulation comprising the nanostructure protective layer 200
Impeller of pump.
Further, in the hot-rolling water circulation with high-performance antiscour wear-resistant nano coating resistant to chemical etching
On impeller of pump, the nanostructure protective layer 200 is to be doped with nano lanthanum oxide (La2O3) composite coating.
It is further preferred that the nanometer protective layer on the working face 110 of the flat impeller body 100 uses plasma spraying
Adulterate the ceramic-metal composite of 2.1-3.5% nano lanthanum oxide particle.
The utility model by adopting the above technical scheme, compared with prior art, has the following technical effect that
Hot-rolling water circulation provided by the utility model with high-performance antiscour wear-resistant nano coating resistant to chemical etching
The protective layer being made of nano material is arranged by the working face in hot-rolling water circulating pump impeller in impeller of pump, and the coating is anti-
It washes away anti abrasive service life resistant to chemical etching to improve to 5 times or more, electric current is steady, is significantly longer than hot-rolling water in the prior art
The service life of circulating pump impeller, continues working impeller for a long time, improves the smoothness of electric current, reduces production
Cost improves work efficiency, and improves the defect of the prior art.
Detailed description of the invention
Fig. 1 is a kind of hot rolling water-circulating pump with high-performance antiscour wear-resistant nano coating resistant to chemical etching of embodiment
The structural schematic diagram of impeller；
Fig. 2 is that a kind of hot-rolling water with high-performance antiscour wear-resistant nano coating resistant to chemical etching of preferred embodiment follows
The structural schematic diagram of ring impeller of pump；
Wherein, each appended drawing reference are as follows: the flat impeller of 100-, 110- working face, 200- nanostructure protective layer, the centre 300- mistake
Cross layer, 400- metal back layer.
Specific embodiment
The utility model is described in more detail below by specific embodiment, for a better understanding of this reality
With novel, but following embodiments are not intended to limit the scope of the utility model.
Have high-performance antiscour resistant to chemical etching wear-resistant as shown in Figure 1, the utility model embodiment provides one kind
The hot-rolling water circulating pump impeller of nano coating is provided with nanostructure protective layer on the working face 110 of flat impeller body 100
200, flat impeller 100 be steel mill can ring portion hot rolling water-circulating pump impeller, which has antiscour, resistance to
Chemical attack, anti abrasive performance, after applying nanostructure protective layer 200 on impeller working face 110, the flat impeller work
The antiscour in face 110 anti abrasive service life resistant to chemical etching is improved to original 5 times or more, is significantly longer than in the prior art
The service life of hot-rolling water circulating pump impeller, continues working impeller for a long time, and the stability of electric current is high, reduces
Production cost improves work efficiency.
As a preferred embodiment of the utility model, the high nanostructure protective layer 200 is compound using cermet
Powder preparation, metal-ceramic composite powder end are using metal as Binder Phase, and using ceramic particle as reinforcing hard phase, warp
The process such as oversintering, reunion, cladding and be made.Due to the addition of metal component, the bond strength between coating and matrix increases
Add, and the adhesive aggregation strength between ceramic particle increases, and can effectively improve coating compactness, reducing reduces coating porosity, to have
Effect improves the corrosion resistance of coating, sufficiently meets the requirement of spare part.
In the selection of metal-ceramic composite powder powder material, fully take into account can ring portion water-circulating pump impeller failure because
Element selects nickel-base material nickel to have good mechanics, physics and chemically.Knot between coating and matrix that nickel-based aluminum oxide is formed
It is high to close intensity, consistency is high, usually as middle layer, is effective against the corrosion of spare part under running conditions.
As another preferred embodiment of the invention, as shown in Fig. 2, this has high-performance antiscour resistant to chemical etching resistance to
The hot-rolling water circulating pump impeller of abrasion nano coating further includes the metal back layer 400 for being successively sprayed on impeller working face 110, centre
Transition zone 300, nanometer protective layer 200 are coated in the upper surface of intermediate layer 300, and intermediate layer 300 is coated in metal bottom
400 upper surface of layer, metal back layer 400 is using the Ni sill for including Ni, Cr, Al, with a thickness of 80-100 μm；Intermediate layer
300 using the Ni sill for including Ni, Cr, Al, W, with a thickness of 50-80 μm.
As an optimal technical scheme of the present embodiment, nickel-based aluminum oxide, Ni-based carbonization are adopted in metal-ceramic composite powder end
Tungsten or Ni-based chromium.Specifically, nickel-based aluminum oxide, α-Al2O3Particle is as main material, and Ni is as auxiliary material, coating and the matrix gold of formation
The bond strength of category is high, and coating is fine and close, usually as middle layer, is effective against the corrosion of workpiece under running conditions；It is Ni-based
Tungsten carbide is to be used Ni as composite powder made of auxiliary material using hard WC as main material, be high hardness material, select Ni60WC
Powder, the material and substrate combinating strength are high, and WC particle can enhance Ni60 composite coating, and solid molten strengthen of γ-Ni solid solution makees
The hardness that coated substrate can be greatly reinforced with the dispersion-strengthened action with a large amount of tiny carbide hard phases, effectively resists work item
Abrasion under part；Ni-based chromium, Ni-Cr2C3In, NiCr content is generally 25% or so, 1400 DEG C of fusing point, at 900 DEG C hereinafter, tool
There are superior erosion resistance, corrosion-resistant and abrasion resistance properties.Wherein, NiCr has good heat resisting corrosion-proof corrosion, and chromium carbide exists
Oxidation resistance in metal carbides is most strong, only just starts to aoxidize at 1100~1400 DEG C, can also keep phase at high temperature
When high hardness, while also there is very strong corrosion resistance and wearability.Coating prepared by the material can sufficiently impeller use
It is required that the Failure Factors such as abrasion, the corrosion under operating condition can be resisted effectively.It is ideal sprayed on material.
On the basis of above-mentioned technical proposal, nanostructure protective layer 200 uses plasma by metal-ceramic composite powder end
Spraying, the process conditions of spraying include flow, the electricity of hydrogen and argon flow, spray distance, spray angle, powder supply rate and carrier gas
Adjusting control, the control of the flow of plasma water and substrate temperature of the power, Current Voltage of arc.The nanostructure sprayed is protected
Sheath 200 with a thickness of 200-350 μm；Preferably 220-320 μm；It is more preferably 240-300 μm；More preferably 250-280 μm.
As a preferred embodiment of the present invention, applied with high-performance antiscour wear-resistant nanometer resistant to chemical etching at this
On the hot-rolling water circulating pump impeller of layer, the nanostructure protective layer 200 is to be doped with nano lanthanum oxide (La2O3) compound painting
Layer.Nanometer protective layer on the working face 110 of flat impeller body 100 is nano oxidized using plasma spraying doping 2.1-3.5%
The ceramic-metal composite of lanthanum particle.The composite coating high temperature friction of dopen Nano lanthana is characterized using X-ray diffraction
The micro-structure of front and back is worn, in conjunction with the friction and wear mechanics of composite coating, result of study shows using plasma spraying nano oxygen
Change the hot-rolling water circulating pump impeller of La doped ceramic-metal composite, the hardness and abrasion resistance properties of the composite coating on surface
Preferable, the coefficient of friction 0.10 when nano lanthanum oxide content is 2.4%.The present embodiment is by introducing nanometer La2O3It can be effectively
Improve the tribological property of hot-rolling water circulating pump impeller, abrasion mechanism is mainly abrasive wear, adhesive wear and oxidation corrosion resistant
The synergic wear of abrasion.
Hot-rolling water provided by the utility model with high-performance antiscour wear-resistant nano coating resistant to chemical etching follows
Ring impeller of pump, the nanocomposite and nano thermal spraying technology of use carry out protection processing, intact solution to flat impeller
Flat impeller working face of having determined anti-high velocity particle abrasion and the problem of reduce chemical attack, effectively improve impeller wearability and
Anti-corrosion property energy；Simultaneously from the angle of enhancing impeller blade Facing material and characteristic, surface is subject to using nickel nano coating and is changed
Property and protection, realize surface corrosion-resistant erosion, wear-resistant function, improve the whole service performance of impeller comprehensively, and can effectively keep away
Exempt from the accident that impeller halt production is shut down to occur, to achieve the purpose that energy conservation, consumption reduction, actual life extends to original 5 times,
It is even longer.
Specific embodiment of the utility model is described in detail above, but it is merely an example, this is practical new
Type is not restricted to particular embodiments described above.To those skilled in the art, any pair of the utility model carries out
Equivalent modifications and substitution also all among the scope of the utility model.Therefore, in the spirit and model for not departing from the utility model
Lower made equal transformation and modification are enclosed, should all be covered in the scope of the utility model.
Claims (4)
1. a kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching, feature exist
In being provided with nanostructure protective layer (200) on the working face (110) of flat impeller body (100), wherein the nano junction
Structure protective layer (200) is using metal-ceramic composite powder end.
2. the hot-rolling water circulation according to claim 1 with high-performance antiscour wear-resistant nano coating resistant to chemical etching
Impeller of pump, which is characterized in that adopt nickel-based aluminum oxide, tungsten carbide of nickel-base or Ni-based chromium in the metal-ceramic composite powder end.
3. -2 described in any item heat with high-performance antiscour wear-resistant nano coating resistant to chemical etching according to claim 1
Squezzing circulating pump impeller, which is characterized in that the nanostructure protective layer (200) with a thickness of 200-350 μm.
4. the hot-rolling water circulation according to claim 1 with high-performance antiscour wear-resistant nano coating resistant to chemical etching
Impeller of pump, which is characterized in that the flat impeller body (100) is the impeller of steel mill's energy ring portion hot rolling water-circulating pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721909557.2U CN208221176U (en) | 2017-12-29 | 2017-12-29 | A kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721909557.2U CN208221176U (en) | 2017-12-29 | 2017-12-29 | A kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching |
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| CN208221176U true CN208221176U (en) | 2018-12-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989822A (en) * | 2017-12-29 | 2018-05-04 | 上海英佛曼纳米科技股份有限公司 | A kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching |
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2017
- 2017-12-29 CN CN201721909557.2U patent/CN208221176U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989822A (en) * | 2017-12-29 | 2018-05-04 | 上海英佛曼纳米科技股份有限公司 | A kind of hot-rolling water circulating pump impeller with high-performance antiscour wear-resistant nano coating resistant to chemical etching |
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