CN109760371A - A kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type - Google Patents
A kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type Download PDFInfo
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- CN109760371A CN109760371A CN201910073197.4A CN201910073197A CN109760371A CN 109760371 A CN109760371 A CN 109760371A CN 201910073197 A CN201910073197 A CN 201910073197A CN 109760371 A CN109760371 A CN 109760371A
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- corrosion
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- welded pipe
- straight seam
- inhibiting coating
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Abstract
The present invention discloses a kind of three layers of anti-corrosion straight seam welded pipe of clad type, including welded tube ontology, and welded tube inner body wall is equipped with a laminated layer gold, and welded tube body outer wall is equipped with one layer of erosion resistant coating.There is three layers of anti-corrosion straight seam welded pipe of the clad type special structure to design, and a compound laminated layer gold, can significantly improve the intensity of welded tube in welded tube, enhance the compression resistance of welded tube, while welded tube outer wall is coated with erosion resistant coating, can effectively improve the anti-corrosive properties of straight seam welded pipe.
Description
Technical field
The present invention relates to the technical field of straight seam welded pipe, in particular to a kind of anti-corrosion of three layers of anti-corrosion straight seam welded pipe of clad type
Coating.
Background technique
Straight seam welded pipe welds manufactured steel pipe with hot rolling or cold-rolled steel sheet or steel coil strip and carries out straight seam welding on welding equipment
Obtained pipe is all straight seam welded pipe.Steel pipes with straight be mainly used at home public waterworks, petrochemical industry, chemical industry,
Power industry, agricultural irrigation, urban construction.It is used as liquid conveying: water supply, draining.It is used as gas conveying: coal gas, steam, liquefaction
Oil gas.It is used as structure: makees pile driving pipe, makees bridge；Harbour, road, building structure pipe etc..
There is no handling by special enhancing, antiseptic property need to be improved the straight seam welded pipe of the prior art.
Summary of the invention
The object of the present invention is to provide a kind of corrosion-inhibiting coatings of three layers of anti-corrosion straight seam welded pipe of clad type, solve above-mentioned existing skill
One or more in art problem.
A kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type provided by the invention, is obtained by following steps:
A1, resin mixture is uniformly applied on welded tube body outer wall；
A2, glass mat is laid in the resin adhesive layer that A1 is obtained, side by side bubble removing；
A3, resin mixture is smeared on the glass fibre carpet veneer that A2 is obtained, it is complete by resin adhesive liquid to glass mat
After being impregnated with, the corrosion-inhibiting coating is obtained.
In some embodiments, the modified epoxy tree that it is 100 parts that the preparation method of resin mixture, which is by mass fraction,
The calcining silicon that curing agent that rouge, mass fraction are 1-10 parts, the promotor that mass fraction is 2-20 parts and mass fraction are 3-8 parts
Limestone flour stirs evenly after being mixed, and obtains resin mixture.
In some embodiments, curing agent is any one in vinyl triamine, aminoethyl piperazine or m-phenylene diamine (MPD)
Or it is a variety of.
In some embodiments, promotor is cobalt naphthenate promotor.
In some embodiments, modified epoxy the preparation method comprises the following steps: being 80-100 parts of epoxy by mass fraction
The chain extender that resin and mass fraction are 2-10 parts mixes, and catalyst is added, and carries out instead in reaction temperature at 180 DEG C -200 DEG C
It answers, when epoxide equivalent reaches 2000-2200g/mol, cools the temperature to 60-80 DEG C, organic amine compound is then added, 90
Amination and chain extending reaction are carried out between DEG C -110 DEG C, obtain the modified epoxy.
In some embodiments, epoxy resin is polyethyleneglycol diglycidylether or polypropylene glycol diglycidyl ether
One of.
In some embodiments, chain extender is one in single phenol, bisphenol compound or bisphenol A-type polyether polyol
Kind.
In some embodiments, catalyst is one of triethanolamine, triethylamine, diethylamine or triphenyl phosphorus.
In some embodiments, organic amine compound is butylamine, diethylamine, methyl butyl amine, monoethanolamine, diethanol
One of amine or N- methylethanolamine.
In some embodiments, corrosion-inhibiting coating with a thickness of 10-15mm.
Beneficial effect:
The corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type of the embodiment of the present invention is coated on welded tube outer wall, can be effective
Improve the anti-corrosive properties of straight seam welded pipe.
Specific embodiment
The present invention is described in more detail below by embodiment.
Case study on implementation 1:
A kind of three layers of anti-corrosion straight seam welded pipe preparation method of clad type, comprising the following steps:
α 1, it will weld and complete and pass through the welded tube feeding preheating furnace progress the pre-heat treatment being tempered, 120 DEG C of preheating temperature temperature,
Time 10min；
α 2, the welded tube feeding supersonic wave cleaning machine after preheating in step α 1 is cleaned by ultrasonic, takes out, dries after the completion
Inside and outside wall moisture；
It is α 3, the welded tube in step α 2 is closed at one end, it is packed into alloy powder into welded tube from the other end, then welded tube is sealed
It closes, Welded Pipe is heated, and melts the alloy powder in welded tube, and Welded Pipe carries out centrifugal movement, the alloy after making fusing
Be adhered on inner wall of welded pipe, obtain the welded tube with alloy-layer, wherein alloy-layer with a thickness of 2mm；
Wherein, alloy powder is made of the ingredient of following weight percent: C:0.20%, Si:0.65%, Al:
1.50%, Ca:1.40%, Zn:0.25%, remaining is Fe and inevitable impurity；
α 4, it is 80 parts of polyethyleneglycol diglycidylether and the single phenol mixing that mass fraction is 2 parts by mass fraction, adds
Enter triethanolamine, reacted in reaction temperature at 180 DEG C, when epoxide equivalent reaches 2000g/mol, is cooled the temperature to 60
DEG C, butylamine is then added, in 90 DEG C of progress aminations and chain extending reaction, obtains modified epoxy；
α 5, by mass fraction it is 100 parts of modified epoxy, the vinyl triamine that mass fraction is 1-10 parts, quality
The calcining wollastonite in powder that the cobalt naphthenate promotor and mass fraction that number is 2-20 parts are 3-8 parts stirs equal after being mixed
It is even, obtain resin mixture；
α 6, the resin mixture that step α 5 is obtained uniformly is applied on the outer wall of the welded tube with alloy-layer；
α 7, glass mat is laid in the resin adhesive layer that step α 6 is obtained, side by side bubble removing；
α 8, resin mixture is smeared on the glass fibre carpet veneer that step α 7 is obtained, to glass mat by resin adhesive liquid
After being impregnated with completely, the erosion resistant coating that welded tube outer wall is formed with a thickness of 10-15mm obtains three layers of anti-corrosion straight seam welded pipe of clad type.
Case study on implementation 2:
A kind of three layers of anti-corrosion straight seam welded pipe preparation method of clad type, comprising the following steps:
γ 1, it will weld and complete and pass through the welded tube feeding preheating furnace progress the pre-heat treatment being tempered, 135 DEG C of preheating temperature temperature,
Time 15min；
γ 2, the welded tube feeding supersonic wave cleaning machine after preheating in step γ 1 is cleaned by ultrasonic, takes out, dries after the completion
Dry inside and outside wall moisture；
It is γ 3, the welded tube in step γ 2 is closed at one end, alloy powder is packed into welded tube from the other end, then welded tube
Closing, Welded Pipe are heated, and the alloy powder in welded tube is melted, and Welded Pipe carries out centrifugal movement, the conjunction after making fusing
Gold is adhered on inner wall of welded pipe, obtains the welded tube with alloy-layer, wherein alloy-layer with a thickness of 6mm；
Wherein, alloy powder is made of the ingredient of following weight percent: C:0.24%, Si:1.40%, Al:
2.00%, Ca:1.60%, Zn:0.50%, remaining is Fe and inevitable impurity；
It γ 4, is 100 parts of polypropylene glycol diglycidyl ether and the bisphenol A-type that mass fraction is 10 parts by mass fraction
Polyether polyol mixing, is added triethylamine, is reacted in reaction temperature at 200 DEG C, when epoxide equivalent reaches 2200g/mol,
80 DEG C are cooled the temperature to, diethyl amine compounds are then added in 110 DEG C of progress aminations and chain extending reaction and obtain modified epoxy tree
Rouge；
γ 5, by mass fraction it is 100 parts of modified epoxy, the aminoethyl piperazine that mass fraction is 10 parts, mass parts
The calcining wollastonite in powder that the cobalt naphthenate promotor and mass fraction that number is 20 parts are 8 parts stirs evenly after being mixed, and obtains
Resin mixture；
γ 6, the resin mixture that step γ 5 is obtained uniformly is applied on the outer wall of the welded tube with alloy-layer；
γ 7, glass mat is laid in the resin adhesive layer that step γ 6 is obtained, side by side bubble removing；
γ 8, resin mixture is smeared on the glass fibre carpet veneer that step γ 7 is obtained, to glass mat by resin glue
After liquid is impregnated with completely, the erosion resistant coating that welded tube outer wall is formed with a thickness of 15mm obtains three layers of anti-corrosion straight seam welded pipe of clad type.
Case study on implementation 3:
A kind of three layers of anti-corrosion straight seam welded pipe preparation method of clad type, comprising the following steps:
β 1, it will weld and complete and pass through the welded tube feeding preheating furnace progress the pre-heat treatment being tempered, 125 DEG C of preheating temperature temperature,
Time 12min；
β 2, the welded tube feeding supersonic wave cleaning machine after preheating in step β 1 is cleaned by ultrasonic, takes out, dries after the completion
Inside and outside wall moisture；
It is β 3, the welded tube in step β 2 is closed at one end, it is packed into alloy powder into welded tube from the other end, then welded tube is sealed
It closes, Welded Pipe is heated, and melts the alloy powder in welded tube, and Welded Pipe carries out centrifugal movement, the alloy after making fusing
Be adhered on inner wall of welded pipe, obtain the welded tube with alloy-layer, wherein alloy-layer with a thickness of 4mm；
Wherein, alloy powder is made of the ingredient of following weight percent: C:0.22%, Si:1%, Al:1.8%,
Ca:1.5%, Zn:0.4%, remaining is Fe and inevitable impurity；
It β 4, is 90 parts of polyethyleneglycol diglycidylether and the bisphenols chemical combination that mass fraction is 5 parts by mass fraction
Object mixing, is added diethylamine, is reacted in reaction temperature at 190 DEG C, and when epoxide equivalent reaches 2100g/mol, temperature is dropped
To 70, monoethanolamine is then added, amination and chain extending reaction are carried out between 100 DEG C, obtains modified epoxy；
β 5, by mass fraction be 100 parts of modified epoxy, the m-phenylene diamine (MPD) that mass fraction is 5 parts, mass fraction are
10 parts of cobalt naphthenate promotor and mass fraction is to stir evenly after 5 parts of calcining wollastonite in powder is mixed, and obtains resin
Mixture；
β 6, the resin mixture that step β 5 is obtained uniformly is applied on the outer wall of the welded tube with alloy-layer；
β 7, glass mat is laid in the resin adhesive layer that step β 6 is obtained, side by side bubble removing；
β 8, resin mixture is smeared on the glass fibre carpet veneer that step β 7 is obtained, to glass mat by resin adhesive liquid
After being impregnated with completely, the erosion resistant coating that welded tube outer wall is formed with a thickness of 12mm obtains three layers of anti-corrosion straight seam welded pipe of clad type.
Three layers of anti-corrosion straight seam welded pipe of clad type of embodiment 1 are subjected to energy test:
Water resistance (50d): unchanged；
Wet-heat resisting (80 DEG C, 100%RH30d): unchanged；
Resistance to gasoline (30d): unchanged；
Salt water resistance (3% salt water room temperature 50d): unchanged；
Salt spray resistance (100h): not blistering, wrinkle resistant.
Water resistance, wet-heat resisting, resistance to gasoline, salt water resistance and the salt spray resistance of three layers of anti-corrosion straight seam welded pipe of clad type are all
It is very excellent.
The corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type of the embodiment of the present invention is coated on welded tube outer wall, can be effective
Improve the anti-corrosive properties of straight seam welded pipe.
The above statement is only preferred embodiment of the invention, it is noted that those skilled in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these also should be regarded as the protection model of invention
Within enclosing.
Claims (10)
1. a kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type, which is characterized in that obtained by following steps:
A1, resin mixture is uniformly applied on welded tube body outer wall；
A2, glass mat is laid in the resin adhesive layer that A1 is obtained, side by side bubble removing；
A3, resin mixture is smeared on the glass fibre carpet veneer that A2 is obtained, is impregnated with completely to glass mat by resin adhesive liquid
Afterwards, the corrosion-inhibiting coating is obtained.
2. a kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type according to claim 1, which is characterized in that described
Modified epoxy that it is 100 parts that the preparation method of resin mixture, which is by mass fraction, the solidification that mass fraction is 1-10 parts
The calcining wollastonite in powder that the promotor and mass fraction that agent, mass fraction are 2-20 parts are 3-8 parts stirs evenly after being mixed,
Obtain resin mixture.
3. a kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type according to claim 2, which is characterized in that described
Curing agent is any one or more in vinyl triamine, aminoethyl piperazine or m-phenylene diamine (MPD).
4. a kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type according to claim 2, which is characterized in that described
Promotor is cobalt naphthenate promotor.
5. a kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type according to claim 2, which is characterized in that described
Modified epoxy the preparation method comprises the following steps: by mass fraction be 80-100 parts epoxy resin and mass fraction be 2-10 parts expansion
Chain agent mixing, is added catalyst, is reacted in reaction temperature at 180 DEG C -200 DEG C, when epoxide equivalent reaches 2000-2200g/
Mol cools the temperature to 60-80 DEG C, organic amine compound is then added, and carries out amination between 90 DEG C -110 DEG C and chain extension is anti-
It answers, obtains the modified epoxy.
6. a kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type according to claim 5, which is characterized in that described
Epoxy resin is one of polyethyleneglycol diglycidylether or polypropylene glycol diglycidyl ether.
7. a kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type according to claim 5, which is characterized in that described
Chain extender is one of single phenol, bisphenol compound or bisphenol A-type polyether polyol.
8. a kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type according to claim 5, which is characterized in that described
Catalyst is one of triethanolamine, triethylamine, diethylamine or triphenyl phosphorus.
9. a kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type according to claim 5, which is characterized in that described
Organic amine compound is one of butylamine, diethylamine, methyl butyl amine, monoethanolamine, diethanol amine or N- methylethanolamine.
10. a kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type according to claim 1, which is characterized in that institute
State corrosion-inhibiting coating with a thickness of 10-15mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910073197.4A CN109760371A (en) | 2019-01-25 | 2019-01-25 | A kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910073197.4A CN109760371A (en) | 2019-01-25 | 2019-01-25 | A kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type |
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| CN109760371A true CN109760371A (en) | 2019-05-17 |
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| CN201910073197.4A Pending CN109760371A (en) | 2019-01-25 | 2019-01-25 | A kind of corrosion-inhibiting coating of three layers of anti-corrosion straight seam welded pipe of clad type |
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| CN105838303A (en) * | 2016-03-31 | 2016-08-10 | 航天材料及工艺研究所 | Epoxy resin waterproof adhesive and preparation method |
| CN106122680A (en) * | 2016-06-29 | 2016-11-16 | 巢湖鹏远金属焊管有限公司 | A kind of high-strength corrosion-resisting straight welded pipe |
| CN106948327A (en) * | 2017-05-02 | 2017-07-14 | 江苏慧天新能源科技有限公司 | A kind of steel construction ocean coats the preparation method of anti-corrosion glass fiber reinforced plastic protective cover |
| CN107141973A (en) * | 2017-06-26 | 2017-09-08 | 南通市晗泰化工有限公司 | A kind of preparation method of Environmental Protective Water-paint |
| CN107880722A (en) * | 2017-11-29 | 2018-04-06 | 中国人民解放军陆军装甲兵学院 | Graphene synergy epoxy strontium yellow anticorrosive paint and preparation method thereof and application |
-
2019
- 2019-01-25 CN CN201910073197.4A patent/CN109760371A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838303A (en) * | 2016-03-31 | 2016-08-10 | 航天材料及工艺研究所 | Epoxy resin waterproof adhesive and preparation method |
| CN106122680A (en) * | 2016-06-29 | 2016-11-16 | 巢湖鹏远金属焊管有限公司 | A kind of high-strength corrosion-resisting straight welded pipe |
| CN106948327A (en) * | 2017-05-02 | 2017-07-14 | 江苏慧天新能源科技有限公司 | A kind of steel construction ocean coats the preparation method of anti-corrosion glass fiber reinforced plastic protective cover |
| CN107141973A (en) * | 2017-06-26 | 2017-09-08 | 南通市晗泰化工有限公司 | A kind of preparation method of Environmental Protective Water-paint |
| CN107880722A (en) * | 2017-11-29 | 2018-04-06 | 中国人民解放军陆军装甲兵学院 | Graphene synergy epoxy strontium yellow anticorrosive paint and preparation method thereof and application |
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Application publication date: 20190517 |