CN109457206A - A kind of preparation method of biomass boiler heating surface protective coating - Google Patents
A kind of preparation method of biomass boiler heating surface protective coating Download PDFInfo
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- CN109457206A CN109457206A CN201811490880.XA CN201811490880A CN109457206A CN 109457206 A CN109457206 A CN 109457206A CN 201811490880 A CN201811490880 A CN 201811490880A CN 109457206 A CN109457206 A CN 109457206A
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- powder
- heating surface
- biomass boiler
- boiler heating
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
Abstract
The present invention discloses a kind of preparation method of biomass boiler heating surface protective coating, including following operating procedure: (1) powder core powder being put into the powder feeder of wire rolling mill, stainless steel band is first rolled into groove on roll mill, the powder core powder mixed is sent into groove by powder feeder, steel band is gradually closed into circular wire rod by roll rolling by roll mill, the wire rod of roll forming is put into drawing on drawing machine again, gradually tube reducing, it is finally reached size φ 2.00mm needed for electric arc spraying, powder cored filament material is made；(2) by the spraying modified liquid of substrate surface used in biomass boiler heating surface, blasting treatment is then carried out again；(3) again use electric arc spraying equipment, by it is bifilar for silk in a manner of in substrate surface prepares coating.A kind of preparation method of biomass boiler heating surface protective coating provided by the invention, easy to operate, low in cost, protection effect is significant.
Description
Technical field
The invention belongs to biomass boiler protection technology fields, and in particular to a kind of biomass boiler heating surface protective coating
Preparation method.
Background technique
Biomass boiler is a type of boiler, with biomass energy as fuel boiler biomass boiler, point
For biomass steam boiler, biomass hot water boiler, biomass thermal wind furnace, biomass heat-conduction oil oven, vertical type biomass boiler, crouch
Formula biomass boiler etc..Boiler is using the combustion apparatus-reciprocal grate for being most suitable for biomass fuel combustion.Boiler is designed in structure
On, opposite conventional boiler furnace cavity is larger, is simutaneously arranged very reasonable Secondary Air, is conducive to wink when burning biomass fuel
Between a large amount of volatile matter full combustions for being precipitated.
Boiler can be furnished with fuel oil (combustion gas) start-up burner, realize igniting automation.The feed of boiler, slagging-off, is given at burning
Automatic control all can be used in water, igniting, and operation is very easy.Boiler is furnished with automatic ash removing device, and it is heated to remove boiler in time
The dust stratification in face guarantees high efficiency boiler stable operation.Boiler tail is disposed with economizer, can also be needed to arrange that air is pre- according to user
Hot device.Relatively traditional boiler, boiler efficiency is higher, and exhaust gas temperature is low.
Using efficient thermal insulation material, boiler surfaces temperature is low, and radiation loss can be ignored.Strictly advised by China national
Model and standard production, all pressure-containing parts are all made of high-quality boiler steel.Stringent inspection will be passed through before every boiler factory
And test, including the water pressure test and X-ray detection.It is provided with manhole, inspection door, flame-observing hole etc., maintenance is very convenient.It is raw
The maximum feature of substance boiler is: energy-saving and environmental protection, and easy to install and use.
But biomass boiler heating surface in the prior art, corrosion resistance in the high temperature environment is poor, easily sends out
The phenomenon that giving birth to coating cracking, falling off, has seriously affected the service life of biomass boiler.
Summary of the invention
It is excellent by preparing the object of the present invention is to provide a kind of preparation method of biomass boiler heating surface protective coating
Bean vermicelli core material and spraying before processing is modified to biomass boiler heating surface, greatly improve biomass boiler heating surface
High-temperature corrosion resistance ability.
The present invention is achieved by the following technical solutions.
A kind of preparation method of biomass boiler heating surface protective coating, including following operating procedure:
(1) powder cored filament material is prepared
Powder core powder is put into the powder feeder of wire rolling mill, stainless steel band is first rolled into groove, powder feeding on roll mill
The powder core powder mixed is sent into groove by device, and steel band is gradually closed into circular wire rod by roll rolling by roll mill,
The wire rod of roll forming is put into drawing on drawing machine again, gradually tube reducing, is finally reached size φ 2.00mm needed for electric arc spraying,
Powder cored filament material is made, wherein powder core powder is made of the component of following parts by weight: 45-55 parts of nickel powder, 28-32 parts of chromium powder, molybdenum powder
4-6 parts, 4-6 parts of aluminium powder, 1-3 parts of indium powder, 1-3 parts of aluminium silicon powder, rare earth 8-12%；
(2) by the spraying modified liquid of substrate surface used in biomass boiler heating surface, blasting treatment is then carried out again, wherein
Modification liquid is made of the component of following parts by weight: sulfuric acid 2-4 part, sodium molybdate 11-16 part, aluminium borate of the mass fraction for 30%
17-20 parts, 280-300 parts of water；
(3) again use electric arc spraying equipment, by it is bifilar for silk in a manner of in substrate surface prepares coating.
Specifically, in above-mentioned steps (1), stainless steel band is 304L stainless steel band, and specification is 10mm × 0.3mm, and 304L is not
Become rusty steel band in include following mass fraction element: () .028%C, 19.800%Cr, 10.100%Ni, 0.860%Mn,
0.400%Si.
Specifically, in above-mentioned steps (1), rare earth is made of La, Lu, Ce, Pr, Nd, Gd mixing.
Specifically, in above-mentioned steps (1), the dosage of powder core powder is the 44-48% of bean vermicelli core material total amount.
Specifically, in above-mentioned powder core powder, nickel powder, chromium powder, molybdenum powder, aluminium powder, indium powder, aluminium silicon powder cross 60 mesh before addition
Sieve.
Specifically, in above-mentioned steps (2), the dosage of modification liquid is 450-500ml/m2.
Specifically, the technological parameter in above-mentioned steps (2), when blasting treatment are as follows: the 20# emergy of granularity 1mm, sandblasting angle
45 °, air pressure 0.5MPa of degree, sandblasting distance 100mm.
Specifically, in above-mentioned steps (3), when electric arc spraying, operating voltage 30V, operating current 240A, spray distance
120-150mm, compressed air pressure 0.4-0.5MPa.
From the above technical scheme, it can be seen that the beneficial effects of the present invention are:
A kind of preparation method of biomass boiler heating surface protective coating provided by the invention, it is easy to operate, it is low in cost,
Powder cored filament material produced by the present invention, Ni element therein can make coating and basis material have preferable bonding state, have simultaneously
There is good high-temperature corrosion resistance performance；Cr element can improve strength of coating and hardness, while also have good resistance to high temperature corrosion
Performance；Rare earth element can reduce the porosity of coating, improve its compactness, enhance the binding ability of coating and matrix, rare earth
Being properly added for element can enhance the corrosion resistance of coating；Being properly added for Mo element plays one to corrosion resistance
Fixed facilitation；Al element has antioxidation, and addition Al element can reduce the cost of coating material；And it is added to
In can effectively promote powder cored filament material during spraying, and the uniformity of distribution allows substrate surface to form company
Continuous, fine and close and complete Fe-Cr composite oxides, can effectively inhibit diffusion of the extraneous corrosive medium to coat inside, simultaneously
In can also reduce the number of Fe, Cr and Ni no cofusing particle, prevent no cofusing particle in oxide and coating from oxidation reaction occurs, cause
Point corrosion occurs for coating；The addition of aluminium silicon powder can further promote the compactness of coating, can effectively inhibit corrosivity
Medium is spread to coat inside, while can also effectively promote the surface hardness of coating；Modification liquid provided by the invention, is sprayed at
After matrix surface, the phenomenon that can effectively enhancing the bond strength between coating and matrix, prevent coating from falling off.
Detailed description of the invention
Fig. 1 is surrosion curve of the sample under 500 DEG C of reaction temperatures；
Fig. 2 is surrosion curve of the sample under 550 DEG C of reaction temperatures；
Fig. 3 is surrosion curve of the sample under 600 DEG C of reaction temperatures；
Fig. 4 is surrosion curve of the sample under 650 DEG C of reaction temperatures.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products of commercially available acquisition can be passed through.
Embodiment 1
A kind of preparation method of biomass boiler heating surface protective coating, including following operating procedure:
(1) powder cored filament material is prepared
Powder core powder is put into the powder feeder of wire rolling mill, stainless steel band is first rolled into groove, powder feeding on roll mill
The powder core powder mixed is sent into groove by device, and steel band is gradually closed into circular wire rod by roll rolling by roll mill,
The wire rod of roll forming is put into drawing on drawing machine again, gradually tube reducing, is finally reached size φ 2.00mm needed for electric arc spraying,
Powder cored filament material is made, wherein powder core powder is made of the component of following parts by weight: 45 parts of nickel powder, 28 parts of chromium powder, 4 parts of molybdenum powder, aluminium
4 parts of powder, 1 part of indium powder, 1 part of aluminium silicon powder, rare earth 8%:
(2) by the spraying modified liquid of substrate surface used in biomass boiler heating surface, blasting treatment is then carried out again, wherein
Modification liquid is made of the component of following parts by weight: sulfuric acid 2 part, sodium molybdate 11 part, aluminium borate 17 part, water of the mass fraction for 30%
280 parts；
(3) again use electric arc spraying equipment, by it is bifilar for silk in a manner of in substrate surface prepares coating.
Specifically, in above-mentioned steps (1), stainless steel band is 304L stainless steel band, and specification is 10mm × 0.3mm, and 304L is not
Become rusty steel band in include following mass fraction element: 0.028%C, 19.800%Cr, 10.100%Ni, 0.860%Mn,
0.400%Si.
Specifically, in above-mentioned steps (1), rare earth is made of La, Lu, Ce, Pr, Nd, Gd mixing.
Specifically, in above-mentioned steps (1), the dosage of powder core powder is the 44% of bean vermicelli core material total amount.
Specifically, in above-mentioned powder core powder, nickel powder, chromium powder, molybdenum powder, aluminium powder, indium powder, aluminium silicon powder cross 60 mesh before addition
Sieve.
Specifically, in above-mentioned steps (2), the dosage of modification liquid is 450-ml/m2。
Specifically, the technological parameter in above-mentioned steps (2), when blasting treatment are as follows: the 20# emergy of granularity 1mm, sandblasting angle
45 °, air pressure 0.5MPa of degree, sandblasting distance 100mm.
Specifically, in above-mentioned steps (3), when electric arc spraying, operating voltage 30V, operating current 240A, spray distance
120mm, compressed air pressure 0.4MPa.
Embodiment 2
A kind of preparation method of biomass boiler heating surface protective coating, including following operating procedure:
(1) powder cored filament material is prepared
Powder core powder is put into the powder feeder of wire rolling mill, stainless steel band is first rolled into groove, powder feeding on roll mill
The powder core powder mixed is sent into groove by device, and steel band is gradually closed into circular wire rod by roll rolling by roll mill,
The wire rod of roll forming is put into drawing on drawing machine again, gradually tube reducing, is finally reached size φ 2.00mm needed for electric arc spraying,
Powder cored filament material is made, wherein powder core powder is made of the component of following parts by weight: 55 parts of nickel powder, 32 parts of chromium powder, 6 parts of molybdenum powder, aluminium
6 parts of powder, 3 parts of indium powder, 3 parts of aluminium silicon powder, rare earth 12%；
(2) by the spraying modified liquid of substrate surface used in biomass boiler heating surface, blasting treatment is then carried out again, wherein
Modification liquid is made of the component of following parts by weight: sulfuric acid 4 part, sodium molybdate 16 part, aluminium borate 20 part, water of the mass fraction for 30%
300 parts；
(3) again use electric arc spraying equipment, by it is bifilar for silk in a manner of in substrate surface prepares coating.
Specifically, in above-mentioned steps (1), stainless steel band is 304L stainless steel band, and specification is 10mm × 0.3mm, and 304L is not
Become rusty steel band in include following mass fraction element: 0.028%C, 19.800%Cr, 10.100%Ni, 0.860%Mn,
0.400%Si.
Specifically, in above-mentioned steps (1), rare earth is made of La, Lu, Ce, Pr, Nd, Gd mixing.
Specifically, in above-mentioned steps (1), the dosage of powder core powder is the 48% of bean vermicelli core material total amount.
Specifically, in above-mentioned powder core powder, nickel powder, chromium powder, molybdenum powder, aluminium powder, indium powder, aluminium silicon powder cross 60 mesh before addition
Sieve.
Specifically, in above-mentioned steps (2), the dosage of modification liquid is 500ml/m2。
Specifically, the technological parameter in above-mentioned steps (2), when blasting treatment are as follows: the 20# emergy of granularity 1mm, sandblasting angle
45 °, air pressure 0.5MPa of degree, sandblasting distance 100mm.
Specifically, in above-mentioned steps (3), when electric arc spraying, operating voltage 30V, operating current 240A, spray distance
150mm, compressed air pressure 0.5MPa.
Test:
Test material is the boiler common pipe materials 1Cr19Ni11Nb that boiler factory provides, and then uses embodiment 1 on its surface
The mode of (1#coating) and embodiment 2 (2#coating) is handled, and comparative sample (SpecimenA) is that surface does not spray
The tubing of coating, then properties of test sample,
Surface microhardness test: carrying out according to national standard GB/T9790-1988, and test equipment is aobvious using HVS-1000 digital display
Micro Vickers hardness meter.After spraying test specimen is made, test specimen is used to the lateral and vertical burnishing part of 400#, 600#, 800# and 1000# sand paper respectively
Reason, then polished with polishing machine, testing coating surface microhardness, load 100g, load time 10s, respectively in coating table
Face different zones take 3 points of measurements, are averaged.
Corrosion resistance test: simulation corrosive medium is KCl, NaCl, K2SO4、Na2SO4Four kinds of compounds, quality are matched
Than being KCl: NaCl: K2SO4∶Na2SO4=63: 13: 5: 1, simulation corrosive medium is sticked and coated on to the surface of sample using coated method,
Unilateral snearing, snearing amount are controlled in 120mg/cm2, snearing finishes, through 120 DEG C of drying 30min of drying box, weighed with electronic balance
And make a record, sample is put into white fused alumina crucible.By sample made from each embodiment and comparative sample (SpecimenA, surface
There is no spray-on coating) it is put into box type heater, carry out the high temperature corrosion at a temperature of 500 DEG C, 550 DEG C, 600 DEG C, 650 DEG C four kinds
Test, keeps the temperature 2h, and taking-up is cooled to room temperature weighing.And then snearing corrosive medium, drying, weighing, corrosion test, it is followed
Ring corrosion test, total time 20h.
Two protective coating samples of 1 embodiment of table and the micro-hardness testing result of comparative sample
Surrosion curve of the two protective coating samples and comparative sample of embodiment at a temperature of differential responses is shown in attached drawing
1-4, it can be seen from the figure that under the conditions of same temperature, two kinds of protective coating surrosion rates of embodiment significantly lower than pair
When being higher than 600 DEG C than sample, especially temperature, show more obvious.Illustrate that protective coating is compared with basis material, resistance to corrosion
It significantly increases.By attached drawing it is also found that under the conditions of identical temperature, the resistance to corrosion of 1 coating of embodiment, which is slightly better than, to be implemented
2 coating of example, the resistance to corrosion of two kinds of coatings are not much different.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, the art
Those of ordinary skill, within the essential scope of the present invention, variation, change, addition or the replacement made all should belong to the present invention
Protection scope.
Claims (8)
1. a kind of preparation method of biomass boiler heating surface protective coating, which is characterized in that including following operating procedure:
(1) powder cored filament material is prepared
Powder core powder is put into the powder feeder of wire rolling mill, stainless steel band is first rolled into groove on roll mill, powder feeder will
The powder core powder mixed is sent into groove, and steel band is gradually closed into circular wire rod by roll rolling by roll mill, then will
The wire rod of roll forming is put into drawing on drawing machine, gradually tube reducing, is finally reached size φ 2.00mm needed for electric arc spraying, is made
Powder cored filament material, wherein powder core powder is made of the component of following parts by weight: 45-55 parts of nickel powder, 28-32 parts of chromium powder, molybdenum powder 4-6
Part, 4-6 parts of aluminium powder, 1-3 parts of indium powder, 1-3 parts of aluminium silicon powder, rare earth 8-12%；
(2) by the spraying modified liquid of substrate surface used in biomass boiler heating surface, blasting treatment is then carried out again, wherein being modified
Liquid is made of the component of following parts by weight: sulfuric acid 2-4 part, sodium molybdate 11-16 part, aluminium borate 17-20 of the mass fraction for 30%
Part, 280-300 parts of water；
(3) again use electric arc spraying equipment, by it is bifilar for silk in a manner of in substrate surface prepares coating.
2. a kind of preparation method of biomass boiler heating surface protective coating according to claim 1, which is characterized in that on
It states in step (1), stainless steel band is 304L stainless steel band, and it includes following matter in 304L stainless steel band that specification, which is 10mm × 0.3mm,
Measure the element of score: 0.028%C, 19.800%Cr, 10.100%Ni, 0.860%Mn, 0.400%Si.
3. a kind of preparation method of biomass boiler heating surface protective coating according to claim 1, which is characterized in that on
It states in step (1), rare earth is made of La, Lu, Ce, Pr, Nd, Gd mixing.
4. a kind of preparation method of biomass boiler heating surface protective coating according to claim 1, which is characterized in that on
It states in step (1), the dosage of powder core powder is the 44-48% of bean vermicelli core material total amount.
5. a kind of preparation method of biomass boiler heating surface protective coating according to claim 1, which is characterized in that on
It states in powder core powder, nickel powder, chromium powder, molybdenum powder, aluminium powder, indium powder, aluminium silicon powder cross 60 meshes before addition.
6. a kind of preparation method of biomass boiler heating surface protective coating according to claim 1, which is characterized in that on
It states in step (2), the dosage of modification liquid is 450-500ml/m2。
7. a kind of preparation method of biomass boiler heating surface protective coating according to claim 1, which is characterized in that on
It states in step (2), technological parameter when blasting treatment are as follows: the 20# emergy of granularity 1mm, 45 ° of sandblasting angle, air pressure 0.5MPa,
Sandblasting distance 100mm.
8. a kind of preparation method of biomass boiler heating surface protective coating according to claim 1, which is characterized in that on
It states in step (3), when electric arc spraying, operating voltage 30V, operating current 240A, spray distance 120-150mm, compression is empty
Atmospheric pressure 0.4-0.5MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811490880.XA CN109457206A (en) | 2018-11-30 | 2018-11-30 | A kind of preparation method of biomass boiler heating surface protective coating |
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| CN201811490880.XA CN109457206A (en) | 2018-11-30 | 2018-11-30 | A kind of preparation method of biomass boiler heating surface protective coating |
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ID=65612645
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Cited By (3)
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| CN114351073A (en) * | 2021-11-24 | 2022-04-15 | 华能济宁运河发电有限公司 | Nickel-chromium carbide metal ceramic spraying wire and preparation method thereof |
| CN114479530A (en) * | 2022-03-07 | 2022-05-13 | 邱质彬 | High-compactness long-acting anti-corrosion coating suitable for heating surface of biomass boiler |
| CN115231933A (en) * | 2022-07-29 | 2022-10-25 | 湖南荣晟昌新材料科技有限公司 | Magnesium refractory material with strong corrosion resistance and preparation method thereof |
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| CN114351073A (en) * | 2021-11-24 | 2022-04-15 | 华能济宁运河发电有限公司 | Nickel-chromium carbide metal ceramic spraying wire and preparation method thereof |
| CN114479530A (en) * | 2022-03-07 | 2022-05-13 | 邱质彬 | High-compactness long-acting anti-corrosion coating suitable for heating surface of biomass boiler |
| CN115231933A (en) * | 2022-07-29 | 2022-10-25 | 湖南荣晟昌新材料科技有限公司 | Magnesium refractory material with strong corrosion resistance and preparation method thereof |
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Application publication date: 20190312 |