CN1061628A - The method of mending enamelled equipment - Google Patents
The method of mending enamelled equipment Download PDFInfo
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- CN1061628A CN1061628A CN91111003A CN91111003A CN1061628A CN 1061628 A CN1061628 A CN 1061628A CN 91111003 A CN91111003 A CN 91111003A CN 91111003 A CN91111003 A CN 91111003A CN 1061628 A CN1061628 A CN 1061628A
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Abstract
The present invention is a kind of processing method that is used to repair chemical enamel equipment, it is characterized in that pottery being sprayed on and carry out the surface-treated position with thermospray, then with poly-fluoro-resin emulsion be the hole sealing agent brushing on the surface of having repaired after solidification treatment, promptly repair and finish, the present invention compared with prior art has simple, the saving of work and time of technology, reduces enterprise's loss that stops production; The bonding strength height, durable in use, for current chemical industry equipment wear-resistant, anticorrosion provides a kind of new processing method.
Description
The invention belongs to technical field of chemical, be specifically related to the method that a kind of chemical industry equipment is repaired the spraying enamel material.
In the chemical industry field, for the metallic surface favorable anti-corrosion effect, some equipment adopts the enamel sintering to make, reactor as the chemical industry use, enamel is a kind of hard brittle material, during sintering, occurs pore easily or in installing and using, the enamel of reactor is partly come off, the enamel coating breakage then must be repaired, and present method for repairing and mending has two kinds, a kind of is with after the enamel full scale clearance of metallic surface, newly spray the enamel sintering again, this method wastes time and energy, and increases working strength of workers, and cost is very high, and its renewal expense is the 40-50% of new reaction still price.Another kind method is with adding anticorrosive material in the binding agent, directly be applied to the breakage surface, this method is just not strong in the corrodibility of medium, can use under the relatively poor environment of solvent borne, and it is stronger, high temperature resistant in corrodibility, the solvent borne of reaction medium, under the severe environment such as particle and the erosion of liquid material, then poor effect can not be used.
The present invention overcomes to exist in the prior art provides a kind of technology simple outside the deficiency, saving of work and time, and cost is low, intensity is high, the method for long-lived reparation chemical enamel equipment.
The object of the present invention is achieved like this, repair the method for chemical enamel equipment, comprise failure surface is carried out roughening treatment, dedusting, thermospray etc., it is characterized in that pottery being sprayed on and carry out the surface-treated position, the surface of then using poly-fluoro-resin emulsion repairing as the hole sealing agent brushing with heat spraying method.Repairing and adopting the thermospray stupalith is to have very wide use temperature (250 to 3000 ℃) and excellent chemical-resistant stability, wear resistance because of pottery, brushing has the poly-fluoro-resin emulsion sealing of hole of excellent properties again, can produce best effect, reduce enterprise's stopping production loss.
The poly-fluoro-resin emulsion that the present invention adopts comprises tetrafluoroethylene, perfluoroethylene-propylene and poly-difluoroethylene, the monomer or the mixed emulsion of poly-trifluoro-ethylene, the tetrafluoroethylene that poly-fluoro-resin emulsion comprises, the polymerization fluoro ethyl propene has many excellent comprehensive performances, stable as chemically-resistant, the higher anti-adhesive of extremely low frictional coefficient (self lubricity), the use temperature scope of broad (260 ℃ to+300 ℃), distinctive hydrophobic, hate wet goods, in order to reduce maintenance cost, environment for use is below 200 ℃, under the general situation of medium flux, also can use the monomer or the mixed emulsion of poly-difluoroethylene and poly-trifluoro-ethylene.
The present invention is when repairing, and the substrate temperature of thermospray is below normal temperature to 100 ℃, and different with the enamelled thermal expansivity because of iron, substrate temperature is too high, causes that enamel coating bursts apart, and causes serious damage on the contrary, can't keep in repair.
Method for repairing and mending of the present invention not only is used for chemical enamel equipment and repairs, and be adapted to the wear-resistant rot-resistant requirement of chemical industry equipment under combinational environment, but substrate temperature is about 200 ℃, and its anticorrosion and anti-wear effect is equal to or higher than employed other method now.
Embodiment:
Present embodiment is to be example with mending enamelled reactor, during reparation, at first the damaged situation of reactor is checked, checks that the back carries out the sandblast roughening treatment to surface, damaged position, adopts the 14-24# emergy, and air pressure is the 4-8 kilograms per centimeter
2Sandblast is tackled not damaged portion and is taked sfgd. as hiding etc.; the also available emery wheel of alligatoring polishing and to surperficial grinding process; use the pressurized air dedusting after the roughening treatment; spray nickel alclad powdered alloy with thermic lance to damaged position after the dedusting; coat-thickness is 0.01-0.1mm, and the substrate temperature of spraying should be controlled at below the normal temperature to 100 ℃, then with the Al of special-purpose thermospray pottery rifle spraying α metallographic
2O
3, coat-thickness is 0.2-0.5mm, during spraying, substrate temperature is equally below normal temperature to 100 ℃, after thermospray finished, the poly-fluoro-resin emulsion of brushing was sent into and is cured processing in the electric furnace, or seal then and carry out solidification treatment at the inner well heater of placing of reactor, sintering temperature is 360-400 ℃, holding temperature 340-400 ℃, is incubated 40-90 minute, coat-thickness can carry out one or many brushing sintering as required, generally can keep sealing hot spray coating surface pore to get final product.
The present invention compared with prior art has the following advantages: 1, simple, the saving of work and time of technology, greatly reduce workman's labour intensity, and improved production efficiency. 2, cost 3-10%(low, that renewal expense only accounts for the new equipment price decides according to the size of impaired area); 3, can do field repair, reduce equipment dismounting expense, reduce the production suspension induced losses of enterprise, 4, the coating after repairing compares coating bond strength height with the technology of the poly-fluororesin of existing renovation technique surface direct spraying, and is durable in use, and can repeatedly repair. For current chemical industry equipment wear-resistant, anticorrosion provides a kind of new process.
Claims (3)
1, a kind of method of repairing chemical enamel equipment comprises damaged surface is carried out roughening treatment, dedusting, thermosprays etc. is characterized in that with heat spraying method pottery being sprayed on and carry out the surface-treated position, are the surface that the hole sealing agent brushing is being repaired with poly-fluoro-resin emulsion then.
2,, it is characterized in that poly-fluoro-resin emulsion comprises the monomer or the mixed emulsion of tetrafluoroethylene, perfluoroethylene-propylene and poly-difluoroethylene, poly-trifluoro-ethylene according to the described method of claim 1.
3, method according to claim 1, the substrate temperature that it is characterized in that thermospray is below normal temperature to 100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91111003A CN1061628A (en) | 1991-11-28 | 1991-11-28 | The method of mending enamelled equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91111003A CN1061628A (en) | 1991-11-28 | 1991-11-28 | The method of mending enamelled equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1061628A true CN1061628A (en) | 1992-06-03 |
Family
ID=4910413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91111003A Pending CN1061628A (en) | 1991-11-28 | 1991-11-28 | The method of mending enamelled equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061628A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160772A (en) * | 2011-12-16 | 2013-06-19 | 深圳富泰宏精密工业有限公司 | Hole sealing method of ceramic layer, and products prepared by same |
| CN108483917A (en) * | 2018-06-06 | 2018-09-04 | 无锡大塘复合材料有限公司 | A kind of improved enamel not adhering process method |
-
1991
- 1991-11-28 CN CN91111003A patent/CN1061628A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160772A (en) * | 2011-12-16 | 2013-06-19 | 深圳富泰宏精密工业有限公司 | Hole sealing method of ceramic layer, and products prepared by same |
| CN103160772B (en) * | 2011-12-16 | 2015-04-15 | 深圳富泰宏精密工业有限公司 | Hole sealing method of ceramic layer, and products prepared by same |
| CN108483917A (en) * | 2018-06-06 | 2018-09-04 | 无锡大塘复合材料有限公司 | A kind of improved enamel not adhering process method |
| CN108483917B (en) * | 2018-06-06 | 2021-03-23 | 无锡大塘复合材料有限公司 | Improved enamel non-stick process |
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