CN87100254A - The method for repairing and mending of enamel chemical equipment enamel lining - Google Patents
The method for repairing and mending of enamel chemical equipment enamel lining Download PDFInfo
- Publication number
- CN87100254A CN87100254A CN 87100254 CN87100254A CN87100254A CN 87100254 A CN87100254 A CN 87100254A CN 87100254 CN87100254 CN 87100254 CN 87100254 A CN87100254 A CN 87100254A CN 87100254 A CN87100254 A CN 87100254A
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- CN
- China
- Prior art keywords
- enamel
- lining
- repair layer
- repairing
- suspension
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Coating By Spraying Or Casting (AREA)
Abstract
A kind of method for repairing and mending of enamel chemical equipment lining.The coating that repair layer is made up of enamel, oxide ceramics or their mixture of oxyacetylene torch or plasma spraying, its material consists of: 1. Cr
2O
3, 2. Al
2O
3, 3. enamel powder.Between repair layer and old lining (or metallic matrix), can spray one deck by Ni-Cr-Al-Al
2O
3The middle close binder of forming.Repair layer is sealed with plastic solution or suspension.The enamel lining of repairing by the inventive method all can reach or near the level of former enamel lining in the bonding strength of chemical stability, mechanical impact property, spalling resistance, proof voltage and repair layer and old lining.
Description
The invention relates to the repairing technique of the enamel equipment lining that uses in the chemical process.
Enamel chemical equipment owing to reasons such as physical abuse, thermal shocking and dielectric corrosions, can cause enamel lining that stripping porcelain, perforation, burst porcelain, crackle etc. take place and damage phenomenon in installing and using.Therefore, must repair enamel equipment.
At present, the method for repairing and mending of enamel lining can be divided into three kinds substantially.A kind of is the resistant metal plugging.For example British Standards(BS) PC3003 second section (glass enamel) the 8th saves the method for defined in (reparation), and it selects the solidity to corrosion metal tantalum close with enamel for use, makes threaded stopper, is equipped with the ptfe plastic packing ring and screws in the lining breakage.This method can obtain long work-ing life, but cost is higher, and impaired area can't be repaired when big; Another kind method is coating (clay) patching.Though but its big area is repaired, be that inorganic clay or its solidity to corrosion of organic resin all has certain limit, differ bigger with the solidity to corrosion of enamel lining; Oil, chemical industry equipment protection against corrosion data compilation " the protection against corrosion brief summary of area, Shanghai " are in (in July, 1972), introduced and utilized Frequency Induction Heating, the method of melted enamel powder, though its patching material is identical with former enamel lining, but it can only repair bar-shaped workpiece, for example agitator and pipe etc. can't be repaired planar section.
The objective of the invention is provides a kind of new method for repairing and mending to the enamel lining of enamel chemical equipment.Make the enamel lining of being repaired, all reach at the aspects such as adhesion strength of chemical stability, anti-mechanical impact property, spalling resistance, proof voltage and lining and metallic matrix or near the level of former enamel lining.
Its solution is: repair layer is to utilize the method for oxyacetylene torch or plasma spraying, spraying one deck enamel, oxide ceramics or their mixture coating.For strengthening the bonding strength between coating and the old lining (or metallic matrix), can spray one deck middle close binder between coating and the old lining (or metallic matrix), its composition is the mixture of a kind of alloy or alloy and pottery.Will carry out sealing treatment for the hole in the sprayed coating, its encapsulant adopts all types of plastic.
Spraying equipment adopts plasma spraying machine or oxyacetylene torch spray gun.The temperature that should control the old lining of mend in the spraying process is no more than 200 ℃.
Before the spraying, should be removed corrosion product, oil removing, carry out the routine processing of sandblasting then, so that surface cleaning, roughening by the enamel surface (or the metallic matrix of bringing to light) of being repaired.
The patching material that repair layer sprayed is: 1. Cr
2O
3, 2. Al
2O
3-TiO
2(TiO wherein
2Content is 0-30%), 3. enamel powder, perhaps above three kinds of mixture of ingredients.
For strengthening the bonding strength of repair layer, between repair layer and old lining or metallic matrix, can spray one deck middle close binder, its material consists of: Ni-Cr-Al-Al
2O
3, it is a kind of Ni-Cr-Al alloy and Al
2O
3Mixture, be thread or Powdered.Wherein Cr content is that 20-80%, aluminium content are 0-12%, Al
2O
3Content is 0-75%.
Should carry out sealing treatment to the hole in the spraying.Encapsulant is the solution or the suspension of plastics.The plastics that can Gong select for use have Resins, epoxy, resol, furane resin, vibrin, polyvinyl chloride, polyethylene, polyphenylene sulfide, penton, fluoroplastics and their mixture; The solvent of plastic solution or the liquid phase component of suspension can be selected the organic or inorganic solvent for use, and its content is the 20-80% of solution (or suspension).Can contain low amounts of resin solidifying agent and toughner in the encapsulant.Enclosure method is to use above-mentioned plastic solution or suspension that sprayed coating is brushed or dip treating.Wherein a kind of independent sealing can be adopted during sealing, also multiple being used alternatingly can be used.Should heat-treat after the sealing, so that encapsulant solidifies or plasticizing.
Embodiment one, and the enamel surface of being repaired is removed corrosion product and used the acetone oil removing.With the processing of sandblasting of the surface of portable sander after, obtained the surface of clean a, texturing to oil removing.With 2000 type flame spray guns spraying middle close binder, spray material is that ni content is 30% Ni-Cr powdered alloy, 0.15 millimeter of joint thickness.Spray the Al of 1 mm thick with plasma spraying machine
2O
3-Cr
2O
3The repair layer that mixed powder is formed, wherein Cr
2O
3Content is 28%.To repair layer sealing three times, adopt squeegee process with polyvinyl chloride solution during sealing, after the sealing dry seven days at normal temperatures.The per distribution ratio of polyvinyl chloride solution is:
Polyvinyl chloride (PVC) RESINS 35
Pimelinketone 100
Phthalic acid dibutyl ester 3
Isocyanic ester 20
Embodiment two, and surface treatment is with embodiment one.With the middle close binder of 0.1 millimeter of plasma gun spraying, material is Ni-Al-Al
2O
3Powder, wherein Al content 5%, Al
2O
3Content 50% the rest is Ni.Use the Cr of plasma spraying 1 mm thick then
2O
3Repair layer, is sealed one time with F-3 plastics suspension repair layer sealing twice with epoxy resin solution.The per distribution ratio of Resins, epoxy confining liquid is:
607 Resins, epoxy 30
Pimelinketone 15
Dipropyl alcohol ketone 15
Dimethylbenzene 15
Resol 25
The per distribution ratio of F-3 plastics suspension is:
F-3 resin 43.65
Chromium dioxide 1.35
Pimelinketone 5.5
Ethanol 50
The sealing back plastified 1 hour down in 270 ℃.
Embodiment three, and surface treatment, repair layer spraying, enclosure method just do not spray 0.1 millimeter Ni-Al-Al with embodiment two
2O
3Middle close binder.
Repair the enamel chemical equipment lining with the inventive method, compared with the prior art, can effectively guarantee the quality of the equipment of repairing, make and repair layer and all reach or approach the level of former enamel lining in chemical stability, anti-mechanical impact property, spalling resistance, proof voltage and with the adhesion strength of old lining (or metal shell), so can significantly improve the service life of equipment.
Claims (7)
1, a kind of method for repairing and mending of enamel chemical equipment enamel lining, it is characterized in that the coating that repair layer is made up of enamel, oxide ceramics or their mixture of oxyacetylene torch or plasma spraying, can spray the middle close binder that one deck alloy or alloy and oxide ceramics are formed between coating and the old enamel lining (or metallic matrix).Repair layer is carried out sealing treatment with plastic solution or suspension.
2, according to the method for repairing and mending of the described enamel chemical equipment lining of claim 1, it is characterized in that the used spray material of repair layer is: 1. Cr
2O
3, 2. Al
2O
3-TiO
2(TiO wherein
2Content is 30%), 3. enamel powder, 4. above-mentioned three kinds of mixture of ingredients.
3, according to the method for repairing and mending of the described enamel chemical equipment lining of claim 1, it is characterized in that the key coat between repair layer and the old lining (or metallic matrix), its material consists of: Ni-Cr-Al-Al
2O
3, it is a kind of Ni-Cr-Al alloy and Al
2O
3Mixture, be thread or Powdered.Wherein Cr content is that 20-80%, aluminium content are 0-12%, Al
2O
3Content is 0-75%.
4, according to the method for repairing and mending of the described enamel chemical equipment lining of claim 1, the encapsulant that it is characterized in that repair layer is carried out sealing treatment is plastic solution or suspension.
5,, it is characterized in that the plastics in the encapsulant are Resins, epoxy, resol, furane resin, vibrin, polyvinyl chloride, polyethylene, polyphenylene sulfide, penton, fluoroplastics or their mixture according to described plastic solution of claim 4 or suspension encapsulant.
6,, it is characterized in that the solvent of plastic solution or the liquid phase component of suspension are the organic or inorganic solvents according to described plastic solution of claim 4 or suspension encapsulant.
7,, it is characterized in that wherein containing the solidifying agent and the toughner of resin according to described plastic solution of claim 4 or suspension encapsulant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100254 CN87100254A (en) | 1987-01-07 | 1987-01-07 | The method for repairing and mending of enamel chemical equipment enamel lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100254 CN87100254A (en) | 1987-01-07 | 1987-01-07 | The method for repairing and mending of enamel chemical equipment enamel lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87100254A true CN87100254A (en) | 1988-07-20 |
Family
ID=4812792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87100254 Pending CN87100254A (en) | 1987-01-07 | 1987-01-07 | The method for repairing and mending of enamel chemical equipment enamel lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87100254A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174698A (en) * | 2011-01-17 | 2011-09-07 | 山东新基德电器有限公司 | Processes for rapidly repairing enamel liner |
| CN102452028A (en) * | 2010-10-24 | 2012-05-16 | 西南交通大学 | Method for repairing ceramic female die |
| CN104209251A (en) * | 2014-08-19 | 2014-12-17 | 南京正源搪瓷设备制造有限公司 | Manufacturing method for fluorine plastic injection outside glass lining workpiece |
-
1987
- 1987-01-07 CN CN 87100254 patent/CN87100254A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452028A (en) * | 2010-10-24 | 2012-05-16 | 西南交通大学 | Method for repairing ceramic female die |
| CN102174698A (en) * | 2011-01-17 | 2011-09-07 | 山东新基德电器有限公司 | Processes for rapidly repairing enamel liner |
| CN104209251A (en) * | 2014-08-19 | 2014-12-17 | 南京正源搪瓷设备制造有限公司 | Manufacturing method for fluorine plastic injection outside glass lining workpiece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |