CN103802381A - Repairation method of anticorrosion and abrasion-resistant lining - Google Patents
Repairation method of anticorrosion and abrasion-resistant lining Download PDFInfo
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- CN103802381A CN103802381A CN201310041763.6A CN201310041763A CN103802381A CN 103802381 A CN103802381 A CN 103802381A CN 201310041763 A CN201310041763 A CN 201310041763A CN 103802381 A CN103802381 A CN 103802381A
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Abstract
The invention discloses a repairation method of an anticorrosion and abrasion-resistant lining. The repairation method of the anticorrosion and abrasion-resistant lining comprises the following steps: (1) surface treatment; (2) brushing of primer; (3) daub repairation; (4) brushing of a wear-resisting layer; (5) brushing of finishing coat; (6) curing and maintaining. The anticorrosion and abrasion-resistant layer prepared by the method provided by the invention has the characteristics of corrosion resistance, erosion resistance and wear resistance, can be used for a long time under an extremely severe environment, such as a corrosion environment special for an ammonia process desulfurization tower, and can effectively solve the problem of corrosion perforation; the method is simple in technology, is low in investment, is convenient to maintain, and has long service life.
Description
Technical field
The present invention relates to a kind of anticorrosion antiwear lining restorative procedure, belong to chemical field.
Background technology
In the energy and financial cost consumption of industrial circle, because the expense of wearing and tearing or corrosion generation is occupied the quite large proportion that obtains.In some special trade, as cement industry, account for 50～55% of total shutdown the downtime causing because of wearing and tearing, and can equipment attrition problem has become an enterprise do one of vital factor of operation well.Therefore, improve the anticorrosion antiwear of industry correlated parts, reduce the consumption of high-abrasive material, extend the service life of high-abrasive material, to improving equipment operation efficiency, reduce production costs, save the energy significant.
Flue gas desulfurization is to control in the world at present sulfur dioxide pollution, the Major Technology of control acid rain harm, and the ammonia process of desulfurization is the trend of world FGD development, generally application and chemical industry field.The ammonia process of desulfurization absorbs SO in flue gas with ammonia
2, by pollutant SO
2recovery becomes the commercial prod sulphur ammonium of high added value, and sulphur ammonium is a kind of nitrogenous fertilizer of function admirable, has good market prospects in China.Make desulfurizing agent if produce deposed ammonia in enterprise's employing production of synthetic ammonia, will more meet recycling economy and energy-conservation requirement, can declare National Development and Reform Committee's special fund and reward.
Ammonia process desulfuration tower enriching section is the worst position of whole desulphurization system corrosive environment at present, is also to corrode the most serious position.It is anticorrosion that prior art is done Glass Flake Substrate to the many employings of corrosion part reparation carbon steels, carborundum wearing layer is done in part, because the strong content of ammonium sulfate solution corrosivity is high, serious to lining erosive wear, physics and chemical attack combine, and frequently cause lining damage, the perforation of tower wall and inner support damage etc.The general new lining desulfurization operation cycle is 1～3 month, and the lining after reparation is more easily corroded, and the maintenance of stopping frequently causes the consumption of manpower and material etc., and maintenance cost is seriously higher, and does not meet equipment safety environmental protection long-term operation.Therefore need to find a kind of new restorative procedure, make the lining after repairing there is good antiacid caustic corrosion and wear-resisting effect, reduce down time, extend the cycle of operation.
Summary of the invention
Object of the present invention provides a kind of anticorrosion antiwear lining restorative procedure, and the lining after reparation can use for a long time under extremely severe corrosive environment.
For achieving the above object, method of the present invention comprises the following steps:
1, surface treatment: surface moisture and other foreign matters are residual, polishes off anticorrosive coat within the scope of the surrounding 250mm of area to be repaired until spill metal true qualities, level and smooth to the lining anticorrosive coat polishing in other regions, cleans out with solvent; The polishing of foraminate part is at the bottom of hole or expose tower wall metal true qualities.
Preferably, the described polishing to area to be repaired is to be that 15o～25o carries out along damaging the area to be repaired gradient; Preferred, to the metal structure of local repair welding or replacing polish to surface roughness be 100-180 μ m.
2, brushing primer: back and forth equably priming paint is brushed on processed matrix surface to be served as a contrast in the same way to thickness 0.05～0.2mm; Preferably, thickness is 0.1mm.
Preferably, brush two-layerly, the brushing of ground floor priming paint is brushing second layer priming paint after 12 hours, and second layer priming paint aberration is different from ground floor priming paint, and two-layer priming paint brushing direction should be mutually vertical, the each 0.05mm of two-layer priming paint.
3, clay is repaired:, after 12 hours, implement scale clay and smear in the brushing of second layer priming paint, before initial set, exert oneself reciprocal roll extrusion to smooth even with the wool roller that speckles with solvent.
Preferably, clay is repaired the interface, end of smearing for twice and is adopted bridging arrangement; Preferred, overlapping the slot length 50mm.
Two-layer scale clay is repaired, the each 0.7mm of thickness; Preferably, every layer of lining detects voltage amplification 3000V.
It is perpendicular that what preferably, second layer scale clay was repaired smear direction and ground floor clay smeared direction.
4, brush wearing layer: two-layer brown corundum wearing layer thickness 0.5～2mm; Preferably, below wearing layer or between two-layer wearing layer, brush enhancement layer, described enhancement layer thickness is 0.5～2mm, and preferred, thickness is 1mm.
Described enhancement layer is made up of the short felt and layer of surface felt and vinylite cut of one deck.
Described wearing layer is mixed by brown corundum granularity sand and vinylite, and solid content is greater than 90%.
Preferably, described brown corundum granularity 20～30 orders, Al
20
3>=95%, Fe
2o
3≤ 3, SiO
2≤ 1.5%, density>=3.8g/cm
3.
5, brush finish: finish paint thickness is thickness 0.05～0.2mm, preferred, thickness is 0.1mm; Preferably, brush two-layerly, the brushing of ground floor finish paint is brushing second layer finish paint after 12 hours, and twice finish paint brushing direction should be mutually vertical, and two-layer finish paint thickness is 0.05mm.
6, curing conservation: curing conservation is delivered for use for 7 days.
Described lining general thickness is more than 4.6mm.
Described clay is epoxy type clay, polyester-type clay or vinyl esters type clay; Preferably vinyl glass flake (VEGF).
Solvent described in step 3 is: epoxy type clay with acetone or alcohol as solvent; Polyester-type or vinyl esters type clay use styrene as solvent.
Preferably, reparation of the present invention is at 5～30 ℃, and relative humidity should be lower than carrying out under 85% condition.
Preferred, epoxy type clay construction temperature is 10～30 ℃; Polyester or vinyl esters type clay construction temperature are 5～30 ℃.
Further preferred, construction matrix surface temperature is higher than 3 ℃ of environment temperatures.
That anticorrosion antiwear lining prepared by method of the present invention has is corrosion-resistant, erosion resistance, wear-resisting characteristic, can be under extremely severe corrosive environment, corrosive environment as distinctive in ammonia process desulfuration tower, long-term use, can effectively solve corrosion failure problem, this method technique is simple, small investment, easy to maintenance, the life-span is long.As current ammonia process desulfuration tower lining generally adopts the anticorrosion life cycle of glass flake 1～3 month, anticorrosion antiwear layer of the present invention used more than 9 months.
The specific embodiment
By following examples, the present invention is described in further details, following examples are explanation of the invention and the present invention is not limited to following examples.
embodiment 1
1, surface treatment: surface moisture and other foreign matters are residual, polishes off anticorrosive coat within the scope of the surrounding 250mm of area to be repaired until spill metal true qualities, level and smooth to the lining anticorrosive coat polishing in other regions, cleans out with solvent; The polishing of foraminate part is at the bottom of hole or expose tower wall metal true qualities.
2, brushing primer: back and forth equably priming paint is brushed on processed matrix surface to be served as a contrast in the same way.
3, clay is repaired:, after 12 hours, implement scale clay and smear in the brushing of second layer priming paint, before initial set, exert oneself reciprocal roll extrusion to smooth even with the wool roller that speckles with solvent.
4, wearing layer: two-layer brown corundum wearing layer thickness 1mm.
5: brush finish: finish paint thickness is 0.1mm.
6, curing conservation: curing conservation is delivered for use for 7 days.
embodiment 2
1, surface treatment: surface moisture and other foreign matters are residual, polishes off anticorrosive coat within the scope of the surrounding 250mm of area to be repaired until spill metal true qualities, level and smooth to the lining anticorrosive coat polishing in other regions, cleans out with solvent; The polishing of foraminate part is at the bottom of hole or expose tower wall metal true qualities; To carry out along damaging area to be repaired gradient 15o～25o to the polishing of area to be repaired; To the metal structure of local repair welding or replacing polish to surface roughness be 100-180 μ m.
2, brushing primer: back and forth equably priming paint is brushed on processed matrix surface to be served as a contrast in the same way to thickness 0.05mm.
3, clay is repaired:, after 12 hours, implement scale vinyl esters type clay and smear in the brushing of second layer priming paint, before initial set, exert oneself reciprocal roll extrusion to smooth even with the wool roller that speckles with styrene solvent; Clay is repaired the interface, end of smearing for twice and is adopted bridging arrangement.
4, wearing layer: two-layer brown corundum wearing layer thickness 0.5; Wearing layer is mixed by brown corundum granularity sand and vinylite, and solid content is greater than 90%; Palm fibre corundum granularity 20～30 orders, Al
20
3>=95%, Fe
2o
3≤ 3, SiO
2≤ 1.5%, density>=3.8g/cm
3.
5: finish paint: brush two-layerly, the brushing of ground floor finish paint is brushing second layer finish paint after 12 hours, and twice finish paint brushing direction should be mutually vertical, and two-layer finish paint thickness is 0.05mm.
6, curing conservation: curing conservation is delivered for use for 7 days.
Described lining general thickness is more than 4.6mm; Described reparation is at 5～30 ℃, and relative humidity should be lower than 85%, under the condition of matrix surface temperature higher than 3 ℃ of environment temperatures, carries out.
embodiment 3
1, surface treatment: surface moisture and other foreign matters are residual, polishes off anticorrosive coat within the scope of the surrounding 250mm of area to be repaired until spill metal true qualities, level and smooth to the lining anticorrosive coat polishing in other regions, cleans out with solvent; The polishing of foraminate part is at the bottom of hole or expose tower wall metal true qualities; To carry out along damaging area to be repaired gradient 15o～25o to the polishing of area to be repaired; To the metal structure of local repair welding or replacing polish to surface roughness be 100-180 μ m.
2, brushing primer: back and forth equably priming paint is brushed on processed matrix surface to be served as a contrast in the same way to thickness 0.2mm.
3, clay is repaired:, after 12 hours, implement epoxy type clay and smear in the brushing of second layer priming paint, before initial set, exert oneself reciprocal roll extrusion to smooth even with the wool roller that speckles with acetone or spirit solvent; Clay is repaired the interface, end of smearing for twice and is adopted bridging arrangement.
4, wearing layer: two-layer brown corundum wearing layer thickness 1mm; Wearing layer is mixed by brown corundum granularity sand and vinylite, and solid content is greater than 90%; Palm fibre corundum granularity 20～30 orders, Al
20
3>=95%, Fe
2o
3≤ 3, SiO
2≤ 1.5%, density>=3.8g/cm
3.
Between two-layer wearing layer, brush the enhancement layer of thickness 0.5mm; Described enhancement layer is made up of the short felt and layer of surface felt and vinylite cut of one deck.
5: finish paint: brush two-layerly, the brushing of ground floor finish paint is brushing second layer finish paint after 12 hours, and twice finish paint brushing direction should be mutually vertical, and two-layer finish paint thickness is 0.1mm.
6, curing conservation: curing conservation is delivered for use for 7 days.
Described lining general thickness is more than 4.6mm.Reparation of the present invention is at 30 ℃, and relative humidity should be lower than 85%, under the condition of matrix surface temperature higher than 3 ℃ of environment temperatures, carries out.
embodiment 4
1, surface treatment: surface moisture and other foreign matters are residual, polishes off anticorrosive coat within the scope of the surrounding 250mm of area to be repaired until spill metal true qualities, level and smooth to the lining anticorrosive coat polishing in other regions, cleans out with solvent; The polishing of foraminate part is at the bottom of hole or expose tower wall metal true qualities; To carry out along area to be repaired gradient 15o～25o to the polishing of area to be repaired.
2, brushing primer: back and forth equably priming paint is brushed on processed matrix surface to be served as a contrast in the same way, brush two-layer, the brushing of ground floor priming paint is brushing second layer priming paint after 12 hours, and second layer priming paint aberration is different from ground floor priming paint, two-layer priming paint brushing direction should be mutually vertical, the each 0.08mm of two-layer priming paint;
3, clay is repaired: brush two-layer clay, it is perpendicular that what second layer clay was repaired smear direction and ground floor clay smeared direction; , after 12 hours, implement clay and smear in the brushing of second layer priming paint, before initial set, exert oneself reciprocal roll extrusion to smooth even with the wool roller that speckles with solvent; Clay is repaired the interface, end of smearing for twice and is adopted bridging arrangement; Overlapping the slot length 50mm; Two-layer scale clay is repaired, the each 0.7mm of thickness; Every layer of lining detects voltage amplification 3000V;
4, wearing layer: two-layer brown corundum wearing layer thickness 1mm; Below two-layer wearing layer, brush enhancement layer thickness 1mm, described enhancement layer is made up of the short felt and layer of surface felt and vinylite cut of one deck; Described wearing layer is mixed by brown corundum granularity sand and vinylite, and solid content is greater than 90%; Described brown corundum granularity 20～30 orders, Al
20
3>=95%, Fe
2o
3≤ 3, SiO
2≤ 1.5%, density>=3.8g/cm
3.
5: finish paint: brush two-layerly, the brushing of ground floor finish paint is brushing second layer finish paint after 12 hours, and twice finish paint brushing direction should be mutually vertical, and two-layer finish paint thickness is 0.05mm.
6, curing conservation: curing conservation is delivered for use for 7 days.
Described lining general thickness is more than 4.6mm; Described clay is epoxy type clay, polyester-type clay or vinyl esters type clay; Preferably vinyl glass flake (VEGF); Described solvent is: acetone or alcohol, polyester for epoxy type clay; Vinyl esters type styrene;
Polyester of the present invention, vinyl esters type clay construction temperature are 5 ℃, and epoxy type clay construction temperature is 10 ℃; Relative humidity should be lower than 85%, under the condition of matrix surface temperature higher than 3 ℃ of environment temperatures, carries out.
embodiment 5
1, surface treatment: surface moisture and other foreign matters are residual, polishes off anticorrosive coat within the scope of the surrounding 250mm of area to be repaired until spill metal true qualities, level and smooth to the lining anticorrosive coat polishing in other regions, cleans out with solvent; The polishing of foraminate part is at the bottom of hole or expose tower wall metal true qualities; To be that 15o～25o carries out along the area to be repaired gradient to the polishing of area to be repaired; To the metal structure of local repair welding or replacing polish to surface roughness be 100-180 μ m.
2, brushing primer: back and forth equably priming paint is brushed on processed matrix surface to be served as a contrast in the same way to thickness 0.2mm; Described priming paint brushing is two-layer, and the brushing of ground floor priming paint is brushing second layer priming paint after 12 hours, and second layer priming paint aberration is different from ground floor priming paint, and two-layer priming paint brushing direction should be mutually vertical, the each 0.1mm of two-layer priming paint.
3, clay is repaired:, after 12 hours, implement clay and smear in the brushing of second layer priming paint, before initial set, exert oneself reciprocal roll extrusion to smooth even with the wool roller that speckles with solvent; Clay is repaired the interface, end of smearing for twice and is adopted bridging arrangement; Overlapping the slot length 50mm; Two-layer scale clay is repaired, the each 0.7mm of thickness; It is perpendicular that what second layer scale clay was repaired smear direction and ground floor clay smeared direction.
4, wearing layer: two-layer brown corundum wearing layer thickness 0.5～2mm 1mm; Between two-layer wearing layer, brush enhancement layer thickness 2mm; Described enhancement layer is made up of the short felt and layer of surface felt and vinylite cut of one deck; Described wearing layer is mixed by brown corundum granularity sand and vinylite, and solid content is greater than 90%, described brown corundum granularity 20～30 orders, Al
20
3>=95%, Fe
2o
3≤ 3, SiO
2≤ 1.5%, density>=3.8g/cm
3.
5: finish paint: finish paint thickness is 0.2mm, to brush two-layerly, the brushing of ground floor finish paint is brushing second layer finish paint after 12 hours, and twice finish paint brushing direction should be mutually vertical, and two-layer finish paint thickness is 0.1mm.
6, curing conservation: curing conservation is delivered for use for 7 days.
Described clay is epoxy type clay; Described solvent is acetone or alcohol; Epoxy type clay construction temperature is 15 ℃; Polyester, vinyl esters type clay construction temperature are 20 ℃, and relative humidity should be lower than 85%, under the condition of matrix surface temperature higher than 3 ℃ of environment temperatures, carry out.
embodiment 6
1, surface treatment: surface moisture and other foreign matters are residual, polishes off anticorrosive coat within the scope of the surrounding 250mm of area to be repaired until spill metal true qualities, level and smooth to the lining anticorrosive coat polishing in other regions, cleans out with solvent; The polishing of foraminate part is at the bottom of hole or expose tower wall metal true qualities; To be that 15o～25o carries out along the area to be repaired gradient to the polishing of area to be repaired; To the metal structure of local repair welding or replacing polish to surface roughness be 100-180 μ m.
2, brushing primer: back and forth equably priming paint is brushed on processed matrix surface to be served as a contrast in the same way, brush two-layer, the brushing of ground floor priming paint is brushing second layer priming paint after 12 hours, and second layer priming paint aberration is different from ground floor priming paint, two-layer priming paint brushing direction should be mutually vertical, the each 0.05mm of two-layer priming paint.
3, clay is repaired:, after 12 hours, implement clay and smear in the brushing of second layer priming paint, before initial set, exert oneself reciprocal roll extrusion to smooth even with the wool roller that speckles with solvent; Clay is repaired the interface, end of smearing for twice and is adopted bridging arrangement, overlapping the slot length 50mm; Two-layer clay is repaired, the each 0.7mm of thickness, and every layer is detected voltage amplification 3000V; It is perpendicular that what second layer scale clay was repaired smear direction and ground floor clay smeared direction.
4, wearing layer: two-layer brown corundum wearing layer thickness is 1mm; Below two-layer wearing layer, brush the enhancement layer of thickness 1mm, described enhancement layer is made up of the short felt and layer of surface felt and vinylite cut of one deck; Described wearing layer is mixed by brown corundum granularity sand and vinylite, and solid content is greater than 90%; Described brown corundum granularity 20～30 orders, Al
20
3>=95%, Fe
2o
3≤ 3, SiO
2≤ 1.5%, density>=3.8g/cm
3.
5: finish paint: finish paint thickness is 0.2mm, to brush two-layerly, the brushing of ground floor finish paint is brushing second layer finish paint after 12 hours, and twice finish paint brushing direction should be mutually vertical, and two-layer finish paint thickness is 0.1mm.
6, curing conservation: curing conservation is delivered for use for 7 days.
Described lining general thickness is more than 4.6mm.Described clay is epoxy type clay, polyester-type clay or vinyl esters type clay; Preferably vinyl glass flake plasticine (VEGF); Described solvent is: acetone or alcohol, polyester for epoxy type clay; Vinyl esters type styrene; Reparation of the present invention is to be 10～30 ℃ at epoxy type clay construction temperature, and polyester, vinyl esters type clay construction temperature are 5～30 ℃, and relative humidity should be lower than 85%, under the condition of matrix surface temperature higher than 3 ℃ of environment temperatures, carries out.
embodiment 7
1, surface treatment: surface moisture and other foreign matters are residual, polishes off anticorrosive coat within the scope of the surrounding 250mm of area to be repaired until spill metal true qualities, level and smooth to the lining anticorrosive coat polishing in other regions, cleans out with solvent; The polishing of foraminate part is at the bottom of hole or expose tower wall metal true qualities; To be that 15o～25o carries out along the area to be repaired gradient to the polishing of area to be repaired; To the metal structure of local repair welding or replacing polish to surface roughness be 100-180 μ m.
2, brushing primer: back and forth equably priming paint is brushed on processed matrix surface to be served as a contrast in the same way, brush two-layer, the brushing of ground floor priming paint is brushing second layer priming paint after 12 hours, and second layer priming paint aberration is different from ground floor priming paint, two-layer priming paint brushing direction should be mutually vertical, the each 0.08mm of two-layer priming paint.
3, clay is repaired:, after 12 hours, implement clay and smear in the brushing of second layer priming paint, before initial set, exert oneself reciprocal roll extrusion to smooth even with the wool roller that speckles with solvent; Clay is repaired the interface, end of smearing for twice and is adopted bridging arrangement, overlapping the slot length 50mm.
4, wearing layer: two-layer brown corundum wearing layer thickness 2mm; Between two-layer wearing layer, brushing enhancement layer thickness is 1mm;
Described enhancement layer is made up of the short felt and layer of surface felt and vinylite cut of one deck; Described wearing layer is mixed by brown corundum granularity sand and vinylite, and solid content is greater than 90%, described brown corundum granularity 20～30 orders, Al
20
3>=95%, Fe
2o
3≤ 3, SiO
2≤ 1.5%, density>=3.8g/cm
3.
5: finish paint: finish paint is brushed two-layer, and the brushing of ground floor finish paint is brushing second layer finish paint after 12 hours, and twice finish paint brushing direction should be mutually vertical, and two-layer finish paint thickness is 0.06mm.
6, curing conservation: curing conservation is delivered for use for 7 days.
Described lining general thickness is more than 4.6mm.Described clay is polyester-type clay; Described solvent is styrene; Reparation of the present invention is at 5～30 ℃, and relative humidity should be lower than carrying out under 85% condition.
Claims (10)
1. a restorative procedure for anticorrosion antiwear lining, comprises the steps:
(1) surface treatment: surface is residual without sulphur ammonia, moisture and other foreign matters, polishes off anticorrosive coat within the scope of the surrounding 250mm of area to be repaired until spill metal true qualities, level and smooth to the lining anticorrosive coat polishing in other regions, cleans out with solvent; The polishing of foraminate part is at the bottom of hole or expose tower wall metal true qualities;
(2) brushing primer: back and forth equably priming paint is brushed on processed matrix surface to be served as a contrast in the same way to thickness 0.05～0.2mm;
(3) clay is repaired:, after 12 hours, implement scale clay and smear in the brushing of second layer priming paint, before initial set, exert oneself reciprocal roll extrusion to smooth even with the wool roller that speckles with solvent;
(4) brush wearing layer: two-layer brown corundum wearing layer thickness 0.5～2mm;
(5) brush finish: finish paint thickness is thickness 0.05～0.2mm;
(6) curing conservation: curing conservation is delivered for use for 7 days.
2. restorative procedure according to claim 1, is characterized in that, the described polishing to area to be repaired of step (1) is to be that 15o～25o carries out along damaging the area to be repaired gradient; Preferred, to the metal structure of local repair welding or replacing polish to surface roughness be 100-180 μ m.
3. restorative procedure according to claim 1 and 2, is characterized in that, the described priming paint thickness of step (2) is 0.1mm; Preferably, brush two-layerly, the brushing of ground floor priming paint is brushing second layer priming paint after 12 hours, and second layer priming paint aberration is different from ground floor priming paint, and two-layer priming paint brushing direction should be mutually vertical, the each 0.05mm of two-layer priming paint.
4. according to the restorative procedure described in the arbitrary claim of claim 1-3, it is characterized in that, the interface, end that the described clay of step (3) is repaired render and set adopts bridging arrangement; Preferred, overlapping the slot length 50mm.
5. restorative procedure according to claim 4, is characterized in that, described two-layer scale clay is repaired the each 0.7mm of thickness; Preferably, every layer of lining detects voltage amplification 3000V; It is perpendicular that what preferably, second layer scale clay was repaired smear direction and ground floor clay smeared direction.
6. according to the restorative procedure described in the arbitrary claim of claim 1-5, it is characterized in that, the described described wearing layer of step (4) is mixed by brown corundum granularity sand and vinylite, and solid content is greater than 90%; Preferably, described brown corundum granularity 20～30 orders, Al
20
3>=95%, Fe
2o
3≤ 3, SiO
2≤ 1.5%, density>=3.8g/cm
3; Preferably, brush enhancement layer thickness 0.5～2mm between two-layer wearing layer, preferred, thickness is 1mm; Preferably, described enhancement layer is made up of the short felt and layer of surface felt and vinylite cut of one deck.
7. according to the restorative procedure described in the arbitrary claim of claim 1-6, it is characterized in that, the described finish paint thickness of step (5) is 0.1mm; Preferably, described finish paint is brushed two-layer, and the brushing of ground floor finish paint is brushing second layer finish paint after 12 hours, and twice finish paint brushing direction should be mutually vertical, and two-layer finish paint thickness is 0.05mm.
8. according to the restorative procedure described in the arbitrary claim of claim 1-7, it is characterized in that, described described lining general thickness is more than 4.6mm; Described clay is epoxy type clay, polyester-type clay or vinyl esters type clay; Preferably vinyl glass flake; Described solvent is: acetone or alcohol, polyester for epoxy type clay; Vinyl esters type styrene.
9. according to the restorative procedure described in the arbitrary claim of claim 1-8, it is characterized in that, described reparation of the present invention is at 5～30 ℃, and relative humidity should be lower than carrying out under 85% condition; Preferably, construction matrix surface temperature is higher than 3 ℃ of environment temperatures.
10. according to the restorative procedure described in the arbitrary claim of claim 1-9, it is characterized in that, described epoxy type clay construction temperature is 10～30 ℃; Polyester-type or vinyl esters type clay construction temperature are 5～30 ℃.
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| CN110898635A (en) * | 2019-11-20 | 2020-03-24 | 中国化学工程第三建设有限公司 | Thermal power plant desulphurization device glass scale anti-corrosion maintenance construction method |
| CN112371459A (en) * | 2020-10-27 | 2021-02-19 | 廖伯文 | Method for brushing coating on outer surface of building and roller convenient for color difference repair |
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| CN105499034A (en) * | 2015-12-30 | 2016-04-20 | 山东瑞嘉通风环保科技有限公司 | Internal corrosion resistant treatment process of desulfurization tower |
| CN108622550A (en) * | 2017-03-20 | 2018-10-09 | 中集集团集装箱控股有限公司 | The method for paint spraying of fragment assembled container |
| CN108622550B (en) * | 2017-03-20 | 2021-08-20 | 中集集团集装箱控股有限公司 | Paint spraying method for piece-by-piece assembled container |
| CN110898635A (en) * | 2019-11-20 | 2020-03-24 | 中国化学工程第三建设有限公司 | Thermal power plant desulphurization device glass scale anti-corrosion maintenance construction method |
| CN112371459A (en) * | 2020-10-27 | 2021-02-19 | 廖伯文 | Method for brushing coating on outer surface of building and roller convenient for color difference repair |
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Application publication date: 20140521 |