CN102775827B - High-temperature-resistance anti-corrosion coating and application thereof in outer wall of industrial boiler - Google Patents
High-temperature-resistance anti-corrosion coating and application thereof in outer wall of industrial boiler Download PDFInfo
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- CN102775827B CN102775827B CN201210301627.1A CN201210301627A CN102775827B CN 102775827 B CN102775827 B CN 102775827B CN 201210301627 A CN201210301627 A CN 201210301627A CN 102775827 B CN102775827 B CN 102775827B
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Abstract
The invention provides a high-temperature-resistance anti-corrosion coating and application thereof in an outer wall of an industrial boiler. The coating comprises the following components: bauxite, silicon powder, aluminum sesquioxide, a curing agent, a suspending agent and an adhesive. The coating can exert the advantages of matched materials, and has the advantages of durability, strong adhesion, impact resistance, anti-corrosion property and the like. In practical use, the coating needs to be sprayed mechanically layer by layer, and sundries on the surface of an object to be sprayed must be cleaned completely before spraying. With the adoption of the coating material provided by the invention, the anti-corrosion and anti-oxidation problems of the surfaces of the tube wall and the surface of the fireproof lining inside a combustion chamber cavity of a high-temperature vapor boiler can be solved, so the service life is greatly prolonged.
Description
Technical field
The present invention relates to a kind of coated material and application thereof, be specifically related to a kind of high-temperature resistant anti-corrosive coating and the application in Industrial Boiler outer wall thereof.
Background technology
The conventional high-temperature resistant coating of boiler inner wall in prior art; most construction technologies are that artificial brushing forms; its rete is thinner; the product of brushing mostly is water-soluble mixing liquid; due to this coating adopt artificial brushing after and protected object surface affinity is little, space is larger between molecule; intensity is lower, after the cooling that repeatedly heats up, there will be obscission.If but artificial brushing film forming is thicker, ftractures more serious, comes off more serious, sticking power is less; And cracking and be full of cracks are serious, can cause thermal radiation to be invaded and can not protect well protection object, do not reach expected effect, do not have good etch-proof effect; And this coatingsurface is rented and is roughly still hung nitre, hangs with a large amount of dirt settlings, easily destroys this protective layer while clearing up this dirt settling.
How to accomplish that protected object surface does not weather, refractory lining does not weather and is out of shape to produce and destroys, and is the theme of this field people research always.Although the coating variety of domestic application is various at present, does not all systematically address this problem.
Summary of the invention
For the shortcoming that in prior art, Industrial Boiler inwall is easily corroded, the invention provides a kind of high-temperature resistant anti-corrosive coating and the application in Industrial Boiler outer wall thereof, described coating can form protective layer at industrial furnace outer wall, thereby reaches the object in the work-ing life that extends industrial furnace.
For achieving the above object, the present invention adopts following technical proposals to be achieved:
A kind of high-temperature resistant anti-corrosive coating, it comprises following component, by mass percentage:
Bauxitic clay 20～30%; Silica flour 5～8%; Al
2o
33～5%; Solidifying agent 1～3%; Tackiness agent 50～60%; Suspension agent 3～5%.
Further improvement to technique scheme: described solidifying agent is resol.
Further improvement to technique scheme: described tackiness agent is water glass, resol.
Further improvement to technique scheme: described suspension agent is wilkinite.
The application of high-temperature resistant anti-corrosive coating described in the present invention also provides in Industrial Boiler outer wall.
Further improvement to technique scheme: in 3 layers of described coating of boiler casing spraying.
Further improvement to technique scheme: first sprayed coating thickness 0.1～0.2mm; Second sprayed coating thickness 0.4～0.6mm; The 3rd sprayed coating thickness 0.1～0.2mm.
Further improvement to technique scheme: carry out the second sprayed coating construction for 2～3 hours after the first sprayed coating condenses; Within 4～6 hours after the second sprayed coating condenses, carry out the 3rd sprayed coating construction.
Compared with prior art, advantage of the present invention and positively effect are: described coating can be brought into play the advantage of suitable material, there is weather resistance, strong adhesion, shock resistance, wear resistance, anticorrosive, surface is without dirt settling or have the advantages such as slight dirt settling, in the time of concrete application, require layering mechanically spraying, the necessary strict foreign material (as corrosion, sulfide) of removing coat to be painted surface before spraying; Coated material of the present invention can solve the anticorrosion problem of oxidation on high-temperature steam boiler burning chamber inner tubal wall surface, refractory lining surface, greatly improves its work-ing life.
Embodiment
Below in conjunction with embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1
One, prepare high-temperature resistant anti-corrosive coating of the present invention
High-temperature resistant anti-corrosive coating of the present invention comprises following component: bauxitic clay, silica flour, aluminium sesquioxide, solidifying agent, suspension agent, tackiness agent, and described solidifying agent is resol, and described suspension agent is wilkinite, and described tackiness agent is water glass.In the present embodiment, the ratio of various components (mass ratio) is: bauxitic clay 20%; Silica flour 8%; Al
2o
35%; Resol 2%; Water glass 60%; Wilkinite 5%.Described each component is mixed to form to mixture, and described mixture is by homogenizer (also can fed batch), 500～1000 revs/min of rotating speeds, and 1 hour time, stir, make to reach affine between its molecule.Then pack in finished container.Described coating can be in Celsius-20～1500 DEG C not crackle, do not peel off and acid and alkali-resistance.
Two, the application in Industrial Boiler outer wall
Coating of the present invention is had relatively high expectations to attachment surface, and attachment surface must be clean.In concrete spraying process, metallic surface is processed by derusting by sandblast technique, after execution national standard: GB8923-88 is Sa2 level, then coated material layering is sprayed on works equably with spraying equipment.
Spraying layering requires:
The first layer: coating thickness 0.1～0.2mm;
The second layer: coating thickness 0.4～0.6mm; Within approximately 2～3 hours after the first layer coating material condenses, carry out second layer construction.
The 3rd layer: coating thickness 0.1～0.2mm; Within approximately 4～6 hours after second layer coating material condenses, carry out tri-level construction.
The present invention proves that through test of many times most economical coat-thickness is 1mm, and layering spraying effect optimum.
Three, the performance of coating of the present invention.
1, peel off experiment and sticking power experiment (GB/T1720-79)
Metallic surface: metal heat-expansion shrinkage linear deformation is fairly obvious, when the temperature difference sharply changes, the material of two kinds of different coefficients of expansion, by producing larger internal stress, can not be attached to metallic surface completely thereby it is peeled off.Coated material of the present invention is applied on steel plate, plate size 200 × 300 × 5mm, coat-thickness 1mm, common high alumina brick 230 × 114 × 65mm, repeatedly repeats the cooling experiment of heating up, and its experimental result data is as table 1:
Described in table 1, coated material peels off and sticking power experimental result
| Test specimen group | Temperature-control range | The temperature control time | Cooling conditions | Observe phenomena | Sticking power |
| Steel pipe 1 | 10～300℃ | 10min | Be cooled to normal temperature | Lead, flawless | 12N/mm 2 |
| Steel pipe 2 | 10～400℃ | 20min | Be cooled to normal temperature | Lead, flawless | 10N/mm 2 |
| Steel pipe 3 | 10～600℃ | 30min | Be cooled to normal temperature | Lead, flawless | 8.5N/mm 2 |
| Steel pipe 4 | 10～800℃ | 60min | Be cooled to normal temperature | Light grey, flawless | 8.2N/mm 2 |
| Steel pipe 5 | 10～1000℃ | 600min | Be cooled to normal temperature | Bright pink look, tiny crack | 8.1N/mm 2 |
| Steel pipe 6 | 10～1200℃ | 700min | Be cooled to normal temperature | Bright pink look, tiny crack | 6N/mm 2 |
| High aluminum component 7 | 10～1400℃ | 200min | Be cooled to normal temperature | Bright pink look, flawless | 32N/mm 2 |
| High aluminum component 8 | 10～1500℃ | 300min | Be cooled to normal temperature | Bright pink look, flawless | 32N/mm 2 |
| Steel pipe 9 | -20～0℃ | 24h | Be cooled to normal temperature | Bright pink look, flawless | 16N/mm 2 |
| Steel pipe 10 | 800～1000℃ | 1-2h | Be cooled to normal temperature | Bright pink look, flawless | 4N/mm 2 |
Note: 1. temperature-rise period is: slowly heat up; Temperature-fall period is: be slowly cooled to normal temperature.
2. the temperature control time is: the residence time that reaches maximum.
3. steel pipe 10 does not eliminate rust, for contrasting.
By the experimental result of table 1, the sticking power that can find out this coated material and body structure surface is 8N/mm
2above, and sticking power reaches 5N/mm
2can not peel off, the data that experiment obtains are: the maximum wind speed in boiler is less than 10m/s, and in the present invention to the wind speed of test specimen up to 35-100m/s.And, spend at high temperature 1000～1200 tiny crack producing and do not affect the performance of this material.Experimental results show that this coated material meets the structural requirement of application.
Non-metallic refractory surface (high aluminum component): the linear deformation of non-metallic refractory is very little consistent with distortion this invention material, and sticking power and bonding force are all fine, meet structural requirement completely.
Other nonmetallic surfaces: concrete, clay brick, timber, plastics, rubber, the sticking power of this invention meets structural requirement.
2, the wear-resisting experiment of wind speed (GB/T1732-93)
The wear-resisting experimental result of the wind speed of coating described in table 2
Table 2 experimental result shows: the thing that sinks heavily shows the abrasion loss of test specimen, shows, in the environment of trace suspension thing, material surface not to be damaged in upper table.
Above embodiment is only in order to technical scheme of the present invention to be described, but not is limited; Although the present invention is had been described in detail with reference to previous embodiment, for the person of ordinary skill of the art, the technical scheme that still can record previous embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the present invention's technical scheme required for protection.
Claims (2)
1. the application of high-temperature resistant anti-corrosive coating in Industrial Boiler outer wall, is characterized in that described high-temperature resistant anti-corrosive coating is composed of the following components: by mass percentage, and bauxitic clay 20～30%; Silica flour 5～8%; Al
2o
33～5%; Solidifying agent 1～3%; Tackiness agent 50～60%; Suspension agent 3～5%; Described solidifying agent is resol, and described tackiness agent is water glass, and described suspension agent is wilkinite;
In 3 layers of described coating of boiler casing spraying,
First sprayed coating thickness 0.1～0.2mm; Second sprayed coating thickness 0.4～0.6mm; The 3rd sprayed coating thickness 0.1～0.2mm.
2. the application of high-temperature resistant anti-corrosive coating according to claim 1 in Industrial Boiler outer wall, is characterized in that: within 2～3 hours after the first sprayed coating condenses, carry out the second sprayed coating construction; Within 4～6 hours after the second sprayed coating condenses, carry out the 3rd sprayed coating construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210301627.1A CN102775827B (en) | 2012-08-23 | 2012-08-23 | High-temperature-resistance anti-corrosion coating and application thereof in outer wall of industrial boiler |
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| CN201210301627.1A CN102775827B (en) | 2012-08-23 | 2012-08-23 | High-temperature-resistance anti-corrosion coating and application thereof in outer wall of industrial boiler |
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| CN102775827A CN102775827A (en) | 2012-11-14 |
| CN102775827B true CN102775827B (en) | 2014-09-10 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382346B (en) * | 2013-07-08 | 2015-06-17 | 苏州欢颜电气有限公司 | High temperature-resistant water-resistant coating for steam pipelines and preparation method thereof |
| CN104744973B (en) * | 2013-12-31 | 2017-06-20 | 马麟 | A kind of effective high radiation ceramic coating of heating-furnace and its preparation, application method |
| CN104946868A (en) * | 2015-05-28 | 2015-09-30 | 宁国市开源电力耐磨材料有限公司 | High temperature anti-oxidation coating material for cast heat treatment, and preparation method thereof |
| CN105476490A (en) * | 2015-11-18 | 2016-04-13 | 浙江春洲铝业有限公司 | Cookware with high wear resistance and manufacturing method of cookware |
| CN105949929A (en) * | 2016-05-25 | 2016-09-21 | 马鞍山市顺达环保设备有限公司 | Anticorrosion and wear-resistant coating for environmental protection equipment and preparation method of anticorrosion and wear-resistant coating |
| CN107965754B (en) * | 2017-11-11 | 2019-11-08 | 安徽国电能源设备工程有限公司 | A kind of boilers heated electrically outer surface heat means of defence |
| CN108165124A (en) * | 2017-12-06 | 2018-06-15 | 安徽金达节能材料发展有限公司 | A kind of fire resistant anticorrosive aluminium alloy coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1931783A (en) * | 2006-10-12 | 2007-03-21 | 洛阳鹏飞耐火材料有限公司 | Hot cast high temperature wear resistant ceramic material |
| CN101428328A (en) * | 2008-12-06 | 2009-05-13 | 华中科技大学 | Powdery paint for lost foam casting of cast iron |
| CN101497105A (en) * | 2009-03-12 | 2009-08-05 | 深圳市景鼎现代科技有限公司 | Cast form water borne coating and technique for preparing the same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1931783A (en) * | 2006-10-12 | 2007-03-21 | 洛阳鹏飞耐火材料有限公司 | Hot cast high temperature wear resistant ceramic material |
| CN101428328A (en) * | 2008-12-06 | 2009-05-13 | 华中科技大学 | Powdery paint for lost foam casting of cast iron |
| CN101497105A (en) * | 2009-03-12 | 2009-08-05 | 深圳市景鼎现代科技有限公司 | Cast form water borne coating and technique for preparing the same |
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