CN1089341A - Oil pipe and manufacture method with nickel-phosphorus alloy anti-corrosion coating - Google Patents
Oil pipe and manufacture method with nickel-phosphorus alloy anti-corrosion coating Download PDFInfo
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- CN1089341A CN1089341A CN 93100518 CN93100518A CN1089341A CN 1089341 A CN1089341 A CN 1089341A CN 93100518 CN93100518 CN 93100518 CN 93100518 A CN93100518 A CN 93100518A CN 1089341 A CN1089341 A CN 1089341A
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Abstract
The present invention relates to a kind of oil field oil pipe, is a kind of oil pipe with nickel-phosphorus alloy anti-corrosion coating and preparation method who utilizes the method acquisition of chemical deposits plating specifically, and its technological process is pretreatment → nickel phosphor alloy chemical deposits plating → reprocessing.The oil pipe that utilizes the present invention to prepare with nickel-phosphorus alloy anti-corrosion coating, has good Anticorrosive Character, coating combines with steel base well, fine and close, even, shock-resistant, the appearance white light, cross crooked coating and do not fracture and come off, the imporosity, high temperature resistant, improve working life more than two times, but and large-scale industrialization production.
Description
The present invention relates to a kind of oil pipe and preparation method with nickel-phosphorus alloy anti-corrosion coating.
In the prior art protection of oil pipeline is generally adopted the method for spraying or brushing epoxy coating, its coating of organic coating of this kind method preparation only is mechanically to be coated in to pass through dry solidification on the metal base surface again, therefore coating and basal body binding force are poor, not shock-resistant, pore is arranged, expansion coefficient is inconsistent, easily peel off, the cost height, and acid resistant alkali and resistance to high temperature are relatively poor, and serviceability temperature can not be above 80 ℃, in some oil field, improve oil production rate by annotating acid to the down-hole, have the steel pipe of organic coating, its coating is all peeled off after once annotating acid, its steel pipe all need be changed in three months afterwards, when oil well depth when 5000m are above, downhole temperature is up to 150 ℃, the oil pipe that therefore has the organic protection coating should not use.At marine oil field, under sea water immersion, the organic coating of oil pipe will peel off in three months and essential the replacing, and for the oil pipe that does not have protective coating, therefore spreadable life is no more than three months, has improved cost for oil production greatly, and being influences one of production efficiency of oilfields and expensive principal element.
The objective of the invention is to propose a kind of oil pipe with nickel phosphor alloy protective coating and preparation method thereof, to solve deficiency of the prior art, this anticorrosive coat and Oil Tube Steel matrix should have good combination force, densification, evenly, and impact resistance, corrosion-resistant, high temperature resistant.
The present invention is a kind of base steel oil pipe with nickel-phosphorus alloy anti-corrosion coating, and the inner and outer surface of this oil pipe comprises that the screw thread screw thread has one deck densification, evenly, the ni-p alloy coating that combination force is good, the ratio of nickel phosphor alloy is nickel 89-93%, and phosphorus 7-11%, bed thickness are the 10-15 micron.
Preparation method of the present invention is as follows:
1, pretreatment, pretreatment comprises sanding, oil removing, rust cleaning, operations such as washing, its flow process are sanding → oil removing → rust cleaning → washing;
2, nickel phosphor alloy chemical deposits plating, to immerse in the plating bath through pretreated steel pipe, the state of steel pipe in coating bath is a hectare tiltedly placement, with horizontal sextant angle 20-30 °, discharge in order to hydrogen, plating bath circulates through filter and pump in coating bath, and steel pipe immersed time 15-30 minute, bath temperature 80-90 ℃, the chemical composition of plating bath is as follows:
(1) main salt: nickelous sulfate NiSo
46H
2O
Or nickel chloride NiCl
26H
2O content 15-45 grams per liter
(2) reducing agent: inferior sodium phosphate NaH
2PO
2H
2O content 15-45 grams per liter
(3) complexing agent: two complex system content 10-30 grams per liters
(4) accelerant: two complexing promoter, as succinic acid, malic acid, glycine propionic acid equal size 2-10 grams per liter
(5) PH buffer agent: sodium acetate or boric acid equal size 5-15 grams per liter
(6) brightening agent: Pb
2+, cd
2+, alkynol, sulfonic acid content 1-200PPm how
(7) stabilizer: Pb
2+, Sn
2+, Sb
3+, IO
3, the sulphur arteries and veins, above-mentionedly select for use a kind of or two kinds of content 1-20PPm.
Plating bath pH value 4.2-5.2, deposition rate 12-35 micron/hour.
3, reprocessing, reprocessing comprise that passivation, washing, its operation are passivation → washing → finished product.
Chemical plating nickel-phosphorus alloy of the present invention is to make reducing agent with hypophosphites to make nickel ion be reduced into metallic nickel, time spent hypophosphites decomposition generation phosphorus, thereby can obtain uniform nickel phosphor alloy sedimentary deposit on the plating piece of catalytic surface having, therefore, this chemical deposition is called autocatalytic plating, is called electroless plating again.So-called electroless plating is meant do not have extrinsic current to pass through, and utilizes reducing agent that solution metal ion chemistry reduce deposition is come out.Nickel ion Ni promptly is provided in the plating bath
2+, reducing agent is provided again, in course of reaction, nickel and phosphorus deposit on the plating piece surface of activation equably, produce hydrogen H simultaneously
2So the metal surface that can be dipped into this plating bath can both plate the Ni-P alloy and belong to, also to allow H simultaneously
2Gas is discharged.
The concrete reaction that with the hypophosphite is reducing agent is as follows:
The Ni-P alloy-layer that is obtained by above-mentioned reaction and the combination force of steel are good, be better than general plating, and coating are even, fine and close, pore-free, and heatproof reaches more than 800 ℃, and this coating reaches following index:
1, nickel phosphorus content 7-11%P, 89-93%Ni
2, hardness 480-550HV(plated state)
1000HV(69RCH) (after 300 ℃ of heat treatments)
3, fusing point 860-880 ℃
4, rotproofness 2-3mg/1000twi
5, appearance white light
6, density 7.72-8.0
7, ductility is crossed bending and is not also come off and fracture
8, intensity surpasses 700MPa(100,000Psi)
9, combination force 400-450MPa(60,000Psi)
10, internal stress＜7MPa tensile stress
11, thermal expansion coefficient 12-13 μ is m/m/ ℃
12, resistance 70-80 μ Ω-cm
13, thermal conductance 0.01Cal/cm/sec/ ℃
14, magnetic susceptibility is non magnetic
15, imporosity in the porosity ratio 15 μ m
16, corrosion resistance is better than electroplated Ni, Cr(salt spray test)
Adopt the present invention to make and improve the working life of oil pipe more than two times, its bath element adopts the industrial goods raw material fully, and the life-span can reach five more than the circulation, therefore cost of production reduces greatly, can satisfy large-scale industrial production, and plating speed is fast, makes it to have higher production efficiency.Utilize the inventive method, the threaded connection place to the plating piece such as the oil pipe of complicated shape all can obtain densification, evenly, and the coating that combination force is good.
Employing the present invention can save a large amount of raw material and owing to changing the manpower and materials that oil pipe takies, a bite oil well well depth is generally 2000 meters.The darkest 5000m that reach use 10 meters long filaments to buckle oil pipe 200-500 root, and few replacing once can be saved ten thousand yuan of material cost 40-100, and therefore ten thousand yuan of comprehensive cost 50-130, adopt the present invention can obtain huge economic benefit, enhance productivity.
Embodiment
2.5 cun of the oil pipe specification φ in oil field, long 10 meters steel pipes are through the inside and outside wall sanding, the degreasing and rust removal pretreatment, immerse in electroless plating of the present invention (chemical plating) liquid plating and can obtain 14.5 microns coating in 23 minutes, reach requirement for anticorrosion, can use 3-5 not corrode in the down-hole.
Concrete technological process is as follows: oil pipe is through following technology
Sanding-→ the alkali oil removing-→ washing-→ washing-→ the salt pickling-→ washing-→ washing-→ chemical nickel phosphorus plating-→ washing-→ CrO
3Passivation-→ washing-→ finished product.
Sanding adopts conventional sanding equipment.The degreasing fluid that the alkali oil removing is adopted with general factory is at 65 ℃ of oil removing 20min.The salt pickling is rust cleaning and tool activation, selects 1.1 hydrochloric acid.After washing was clean, oil pipe immersed in the chemical nickel-plating liquid, and oil pipe will have several angle to put into coating bath for 25 °, so that the hydrogen that produces during nickel plating in the oil pipe is discharged, plating bath will be strengthened plating bath and flow with filter or pump circulation.Plating bath adopts the heating of stainless steel steam pipe, 85 ℃ of operating temperatures.10 oil pipes plate with 5000 liters of grooves of volume.
Obtaining bed thickness by above-mentioned parameter is 14.5 microns nickel-phosphorus alloy coating, and nickel content is 90%, and phosphorus content is 10%, hardness 500Hv, 867 ℃ of fusing points, corrosion resistance 2.8mg/100twi, density 7.75, intensity 720MPa, internal stress 6.2MPa, thermal expansion coefficient 12.5 μ m/m/ ℃, resistance 75 μ Ω/cm, thermal conductance 0.01cal/cm/sec/ ℃, non magnetic, the imporosity, crooked 90 degree do not fracture white bright looking.
Claims (3)
1, a kind of oil field base steel oil pipe is characterized in that the inner and outer surface of this oil pipe comprising that the screw thread screw thread has one deck nickel-phosphorus alloy anti-corrosion coating that the nickel phosphor alloy ratio is nickel 89-93%, and phosphorus 7-11%, bed thickness are the 10-15 micron.
2, the preparation method of the described oil pipe of claim 1, comprise pretreatment and postprocessing working procedures, the pretreatment process flow process be sanding-→ oil removing-→ rust cleaning-→ washing, postprocessing working procedures be passivation-→ washing-→ finished product, it is characterized in that behind pretreatment process adopting chemical deposition at oil pipe base steel inner and outer surface plating nickel-phosphorus alloy, its process is as follows: will be through in the pretreated steel pipe immersion plating bath, steel pipe state and level in coating bath are 20-30 degree angle and discharge in order to hydrogen, plating bath circulates through filter and pump in coating bath, and steel pipe immersed time 15-30 minute, bath temperature 80-90 degree, the Chemical composition of plating bath is: main salt: nickelous sulfate, content 15-45 grams per liter, reducing agent: inferior sodium phosphate, content 15-45 grams per liter, complexing agent, content 10-30 grams per liter, accelerant, content 10-30 grams per liter, the PH buffer agent, content 5-15 gram liter, brightening agent, content 1-200PPm, stabilizer, content 1-20PPm, pH value 4.2-5.2, deposition rate 12-35 micron/hour.
3, by the described preparation method of claim 2, it is characterized in that main salt is nickel chloride in the bath element, complexing agent is two complex systems, accelerant is two complexing promoter such as succinic acid, or malic acid, or glycine, or propionic acid, the PH buffer agent is sodium acetate or boric acid, brightening agent is Pb
2+Or cd
2+Or alkynol or yellow acid how, stabilizer is to select for use a kind of or two kinds at following composition: Pb
2+, Sn
2+, Sn
3+, IO-
3, thiocarbamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93100518 CN1029325C (en) | 1993-01-03 | 1993-01-03 | Oil pipe with nickel-phosphorus alloy anti-corrosion coating and its producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93100518 CN1029325C (en) | 1993-01-03 | 1993-01-03 | Oil pipe with nickel-phosphorus alloy anti-corrosion coating and its producing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1089341A true CN1089341A (en) | 1994-07-13 |
| CN1029325C CN1029325C (en) | 1995-07-12 |
Family
ID=4983073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93100518 Expired - Fee Related CN1029325C (en) | 1993-01-03 | 1993-01-03 | Oil pipe with nickel-phosphorus alloy anti-corrosion coating and its producing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029325C (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0943852A1 (en) * | 1998-03-19 | 1999-09-22 | Anoflex Société en nom collectif | Method for providind an interconnecting pipe with a bracket |
| CN1053231C (en) * | 1996-10-16 | 2000-06-07 | 南京大学 | Plating bath for chemical plating nickel-phosphorus alloy and chemical plating process |
| CN1055138C (en) * | 1996-11-20 | 2000-08-02 | 山东矿业学院 | Acidic chemical plating nickel solution and plating method |
| CN1073644C (en) * | 1999-09-24 | 2001-10-24 | 华南理工大学 | Chemical nickel plating solution |
| CN1079449C (en) * | 1999-07-12 | 2002-02-20 | 西北有色金属研究院 | Self-catalytic nickel alloy plating layer and plating process thereof |
| CN1086456C (en) * | 1999-11-04 | 2002-06-19 | 国玉江 | Metal tube with anti-corrosion, antiscale and anti-wax-precipitation coating and producing method thereof |
| CN1297687C (en) * | 2003-10-16 | 2007-01-31 | 李天忠 | Process for preventing coupling corrosion and thread gluing of tubings |
| CN102337539A (en) * | 2011-10-18 | 2012-02-01 | 长沙力元新材料有限责任公司 | Method for preparing acid-resisting porous metal material |
| CN103527158A (en) * | 2013-10-31 | 2014-01-22 | 湖南纳菲尔新材料科技股份有限公司 | Nickel-tungsten-based alloy coating screen pipe for high-salinity oil-gas well containing hydrogen sulfide and carbon dioxide |
| CN104134498A (en) * | 2014-08-14 | 2014-11-05 | 国家电网公司 | All aluminum conductor with surface of steel core plated with high corrosion resisting Ni-P amporphous coating |
| CN104315301A (en) * | 2014-09-28 | 2015-01-28 | 山东大学 | High-temperature-resistant and high-salinity brine corrosion-resistant transporting brine tube and manufacturing method and application thereof |
| CN104388920B (en) * | 2014-11-12 | 2017-02-22 | 华南理工大学 | Chromate-free passivation method for chemically-plated Ni-P coating |
| CN107130271A (en) * | 2017-05-25 | 2017-09-05 | 珠海市玛斯特五金塑胶制品有限公司 | A kind of fuel feeding rail electroplating technology and its special fixture |
| CN108624927A (en) * | 2018-08-03 | 2018-10-09 | 克拉玛依双信防腐技术有限公司 | The more coating composite plating equipment of tube inner wall and electro-plating method |
| CN109609936A (en) * | 2018-12-26 | 2019-04-12 | 江南大学 | A kind of self-catalysis alloy layer |
| CN111660064A (en) * | 2020-05-14 | 2020-09-15 | 杭州科晟能源技术有限公司 | Manufacturing method of corrosion-resistant pipe fitting of superheater and pipe bending device |
| CN113416990A (en) * | 2021-08-23 | 2021-09-21 | 胜利油田胜鑫防腐有限责任公司 | Preparation process of metal coating anti-corrosion pipe |
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| CN1325747C (en) * | 2005-08-02 | 2007-07-11 | 河北华北石油荣盛机械制造有限公司 | Surface treatment method of internal thread of stainless steel oil pipe collar |
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1993
- 1993-01-03 CN CN 93100518 patent/CN1029325C/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053231C (en) * | 1996-10-16 | 2000-06-07 | 南京大学 | Plating bath for chemical plating nickel-phosphorus alloy and chemical plating process |
| CN1055138C (en) * | 1996-11-20 | 2000-08-02 | 山东矿业学院 | Acidic chemical plating nickel solution and plating method |
| EP0943852A1 (en) * | 1998-03-19 | 1999-09-22 | Anoflex Société en nom collectif | Method for providind an interconnecting pipe with a bracket |
| FR2776343A1 (en) * | 1998-03-19 | 1999-09-24 | Anoflex | PROCESS FOR FITTING A METAL CONNECTION TUBE WITH A FIXING LUG |
| CN1079449C (en) * | 1999-07-12 | 2002-02-20 | 西北有色金属研究院 | Self-catalytic nickel alloy plating layer and plating process thereof |
| CN1073644C (en) * | 1999-09-24 | 2001-10-24 | 华南理工大学 | Chemical nickel plating solution |
| CN1086456C (en) * | 1999-11-04 | 2002-06-19 | 国玉江 | Metal tube with anti-corrosion, antiscale and anti-wax-precipitation coating and producing method thereof |
| CN1297687C (en) * | 2003-10-16 | 2007-01-31 | 李天忠 | Process for preventing coupling corrosion and thread gluing of tubings |
| CN102337539A (en) * | 2011-10-18 | 2012-02-01 | 长沙力元新材料有限责任公司 | Method for preparing acid-resisting porous metal material |
| CN103527158A (en) * | 2013-10-31 | 2014-01-22 | 湖南纳菲尔新材料科技股份有限公司 | Nickel-tungsten-based alloy coating screen pipe for high-salinity oil-gas well containing hydrogen sulfide and carbon dioxide |
| CN104134498A (en) * | 2014-08-14 | 2014-11-05 | 国家电网公司 | All aluminum conductor with surface of steel core plated with high corrosion resisting Ni-P amporphous coating |
| CN104134498B (en) * | 2014-08-14 | 2016-10-26 | 国家电网公司 | A kind of steel core surface is coated with the aluminum stranded conductor of high anti-corrosion Ni-P amorphous coating |
| CN104315301A (en) * | 2014-09-28 | 2015-01-28 | 山东大学 | High-temperature-resistant and high-salinity brine corrosion-resistant transporting brine tube and manufacturing method and application thereof |
| CN104388920B (en) * | 2014-11-12 | 2017-02-22 | 华南理工大学 | Chromate-free passivation method for chemically-plated Ni-P coating |
| CN107130271A (en) * | 2017-05-25 | 2017-09-05 | 珠海市玛斯特五金塑胶制品有限公司 | A kind of fuel feeding rail electroplating technology and its special fixture |
| CN108624927A (en) * | 2018-08-03 | 2018-10-09 | 克拉玛依双信防腐技术有限公司 | The more coating composite plating equipment of tube inner wall and electro-plating method |
| CN109609936A (en) * | 2018-12-26 | 2019-04-12 | 江南大学 | A kind of self-catalysis alloy layer |
| CN109609936B (en) * | 2018-12-26 | 2022-01-04 | 江南大学 | Self-catalytic alloy coating |
| CN111660064A (en) * | 2020-05-14 | 2020-09-15 | 杭州科晟能源技术有限公司 | Manufacturing method of corrosion-resistant pipe fitting of superheater and pipe bending device |
| CN111660064B (en) * | 2020-05-14 | 2021-06-08 | 杭州科晟能源技术有限公司 | Manufacturing method of corrosion-resistant pipe fitting of superheater and pipe bending device |
| CN113416990A (en) * | 2021-08-23 | 2021-09-21 | 胜利油田胜鑫防腐有限责任公司 | Preparation process of metal coating anti-corrosion pipe |
| CN113416990B (en) * | 2021-08-23 | 2021-12-14 | 胜利油田胜鑫防腐有限责任公司 | Preparation process of metal coating anti-corrosion pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1029325C (en) | 1995-07-12 |
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