CN106521480A - Corrosion, sulfur and wear resisting oil pipe laser cladding coating layer preparation process - Google Patents
Corrosion, sulfur and wear resisting oil pipe laser cladding coating layer preparation process Download PDFInfo
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- CN106521480A CN106521480A CN201510576984.2A CN201510576984A CN106521480A CN 106521480 A CN106521480 A CN 106521480A CN 201510576984 A CN201510576984 A CN 201510576984A CN 106521480 A CN106521480 A CN 106521480A
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- oil pipe
- corrosion
- laser
- sulfur
- laser cladding
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
Abstract
The invention discloses a corrosion, sulfur and wear resisting oil pipe laser cladding coating layer preparation process. A 5000 W cross-current CO2 laser and a working platform are used as numerical control laser processing machines; a coaxial or paraxial powder feeding device is adopted to automatically feed nickel base alloy powder into a laser molten pool to form an uniform and compact corrosion, sulfur and wear resisting laser cladding coating layer with a thickness of 3-6 mm on a machined surface; a laser surface cladding process is adopted; in the cladding process, a heat affected zone is small, and no influence is generated on the oil pipe strength; a nickel base alloy with good corrosion resistance and high strength is adopted; and when the oil pipe strength is guaranteed, an oil pipe is excellent in wear and corrosion resistance. The preparation process reinforces the corrosion, sulfur and wear resistance of the oil pipe, prolongs the service life of the oil pipe, and solves one difficulty incapable of being solved for a long time in the oil pipe and oil pipe corrosion application field in national petroleum production, oil-gas-water well production operation construction and maintenance.
Description
Technical field
The present invention relates to field of laser cladding, specifically a kind of corrosion-proof sulfur-proof wear-resisting oil pipe laser cladding coating preparation technology.
Background technology
During oil-gas field development, as the various oil pipes for using are in oxygen-containing, hydrogen sulfide, carbon dioxide.Easily there is electrochemical corrosion or polytype corrosion by the interaction of mechanical force and waterpower under dynamic environment in metal pipe material.In oil well corrosion, the internal corrosion of oil pipe is particularly acute, and particularly most domestic oil field enters the oil extraction intermediary and later stages, all contains C0 in oil well, air-fuel mixture well, water injection well2、H2The multiple components corrosive medium such as S, gas, high temperature, high salinity, hole condition environment are more severe, and extent of corrosion constantly aggravates to produce.
China's oil pipe adopts American technology, etching problem solve very well always in the past.Corrosion phenomenon now in oil field is not only very universal, and as one of three big public hazards of oil field, industry research personage is directed to the problem, has carried out continuous research and has made certain gains, has selected the other pipe material of different intensity scale according to conditions such as well depth, oil-air pressures：Such as inner liner compound pipe, Pc300 undercoating pipes, nickel phosphor plating pipe, vacuum nitriding anticorrosion sucker rod etc., while select surface anticorrosion to process according to down-hole geologic information：Corrosion inhibiter etc. is thrown in such as.These technologies reduce the inner wall corrosion of oil pipe in varying degrees.
But the etching problem of oil pipe generally speaking, can't be fundamentally solved, especially the corrosion of tube end screw thread.At home, the anti-corrosion of down-hole oil tube is primarily directed to produce the acid-base value control of liquid and the protection of pipe body, and in terms of being only limitted to new material, technique (phosphatization, copper facing) to the research of the oil pipe of connecting tube.Because the end thread of pipe still can be contacted with the liquid in tubing string upon connection, coating is not strong due to adhesion, is destroyed during oil pipe is screwed, and long-term production will necessarily cause screw corrosion to fail, so prevention effect is not good enough, it is also not high to prevent and treat success rate.
The content of the invention
It is an object of the invention to provide a kind of corrosion-proof sulfur-proof wear-resisting oil pipe laser cladding coating preparation technology, corrosion-proof sulfur-proof wear-resisting laser cladding coating is prepared on oil pipe using laser cladding method, the oil pipe which obtains is well combined, damages alloy powder system using high intensity anticorrosive anti-wear with workpiece, its obtained cladding layer microscopic structure is fine and closely woven, and this microstructure morphology causes oil pipe to have more excellent corrosion-proof sulfur-proof wear-resisting performance.
For achieving the above object, the present invention provides following technical scheme：
A kind of corrosion-proof sulfur-proof wear-resisting oil pipe laser cladding coating preparation technology, comprises the following steps that：
（1）Oil removing, processing of rust removing are carried out to oil pipe with abluent under room temperature, and it is clean with alcohol washes；Working position is treated with Dye inspectiong to test, it is desirable to working position flawless, pore, inclusion defect；
（2）Use intensity it is high, corrosion-resistant and with the matrix metallurgy good Co-based alloy powder of the compatibility, the Co-based alloy powder according to the component of percentage by weight is：C：0.02-0.04%、Cr：20-23%、Fe：1.2-1.6 %、Mo：8-10%、Si：0.2-0.4%、Nb：3.6-4.0%, balance of Ni；
（3）Using 5000W crossing current CO2Laser instrument, work platformses are CNC laser processing machine；Using coaxial or paraxonic dust feeder by step（2）In Co-based alloy powder be automatically fed into laser molten pool, machined surface formed even compact corrosion-proof sulfur-proof wear-resisting laser cladding coating, thickness is in 3-6mm；Its technological parameter is as follows：
Focus lamp F=300-400mm
Cladding power P=2000-5000W
Spot size D=3-10mm
Scan velocity V=200-1000mm/min
Overlapping rate 40%-60%；
（4）To step（3）The laser cladding coating of middle preparation carries out crack-detecting and detects and determine whether crack defect generation；
（5）Machining is carried out by the requirement of oil pipe on laser cladding coating；
（6）Preservative treatment is carried out to tube inner wall.
As further scheme of the invention：Step（2）Described in Co-based alloy powder according to the component of percentage by weight be：C：0.03%、Cr：21.5%、Fe：1.4 %、Mo：9%、Si：0.4%、Nb：3.8%, balance of Ni.
As further scheme of the invention：Step（3）In technological parameter it is as follows：
Focus lamp F=350mm
Cladding power P=3500W
Spot size D=6.5mm
Scan velocity V=600mm/min
Overlapping rate 50%.
The present invention adopts cladding laser surfaces technique, and in cladding process, heat affected area is little, on oil pipe intensity without impact, using the high nickel-base alloy of good corrosion resistance intensity, is ensureing oil pipe intensity simultaneously, and oil pipe obtains excellent anti-corrosion wear performance.
Compared with prior art, the invention has the beneficial effects as follows：
Invention enhances the corrosion-proof sulfur-proof wear-resisting performance of oil pipe, improves its service life, China is solved in oil exploitation, oil pipe and the long-term unsolved difficult problem of oil pipe anti-corrosive erosion application one in oily, gas and water well production operation construction, maintenance.The features such as extending oil pipe service life, reduce production cost, be greatly improved the recovery ratio of oil, gas well, and have production technology to meet the requirement at scene, convenient regular maintenance and higher promotional value.Replacing debug time and maintenance time has been saved, the service efficiency of oil pipe has been improve, the process cost of oil exploitation has been greatly reduced.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, the every other embodiment obtained under the premise of creative work is not made by those of ordinary skill in the art belongs to the scope of protection of the invention.
Embodiment 1
A kind of corrosion-proof sulfur-proof wear-resisting oil pipe laser cladding coating preparation technology, comprises the following steps that：
（1）Oil removing, processing of rust removing are carried out to oil pipe with abluent under room temperature, and it is clean with alcohol washes；Working position is treated with Dye inspectiong to test, it is desirable to working position flawless, pore, inclusion defect；
（2）Use intensity it is high, corrosion-resistant and with the matrix metallurgy good Co-based alloy powder of the compatibility, the Co-based alloy powder according to the component of percentage by weight is：C：0.02%、Cr：20%、Fe：1.2 %、Mo：8%、Si：0.2%、Nb：3.6%, balance of Ni；
（3）Using 5000W crossing current CO2Laser instrument, work platformses are SIMENS CNC laser processing machines；Using coaxial or paraxonic dust feeder by step（2）In Co-based alloy powder be automatically fed into laser molten pool, machined surface formed even compact corrosion-proof sulfur-proof wear-resisting laser cladding coating, thickness is in 3mm；Its technological parameter is as follows：
Focus lamp F=300mm
Cladding power P=2000W
Spot size D=3mm
Scan velocity V=200mm/min
Overlapping rate 40%；
（4）To step（3）The laser cladding coating of middle preparation carries out crack-detecting and detects and determine whether crack defect generation；
（5）Machining is carried out by the requirement of oil pipe on laser cladding coating；
（6）Preservative treatment is carried out to tube inner wall.
Embodiment 2
A kind of corrosion-proof sulfur-proof wear-resisting oil pipe laser cladding coating preparation technology, comprises the following steps that：
（1）Oil removing, processing of rust removing are carried out to oil pipe with abluent under room temperature, and it is clean with alcohol washes；Working position is treated with Dye inspectiong to test, it is desirable to working position flawless, pore, inclusion defect；
（2）Use intensity it is high, corrosion-resistant and with the matrix metallurgy good Co-based alloy powder of the compatibility, the Co-based alloy powder according to the component of percentage by weight is：C：0.03%、Cr：21.5%、Fe：1.4 %、Mo：9%、Si：0.4%、Nb：3.8%, balance of Ni；
（3）Using 5000W crossing current CO2Laser instrument, work platformses are SIMENS CNC laser processing machines；Using coaxial or paraxonic dust feeder by step（2）In Co-based alloy powder be automatically fed into laser molten pool, machined surface formed even compact corrosion-proof sulfur-proof wear-resisting laser cladding coating, thickness is in 4.5mm；Its technological parameter is as follows：
Focus lamp F=350mm
Cladding power P=3500W
Spot size D=6.5mm
Scan velocity V=600mm/min
Overlapping rate 50%；
（4）To step（3）The laser cladding coating of middle preparation carries out crack-detecting and detects and determine whether crack defect generation；
（5）Machining is carried out by the requirement of oil pipe on laser cladding coating；
（6）Preservative treatment is carried out to tube inner wall.
Embodiment 3
A kind of corrosion-proof sulfur-proof wear-resisting oil pipe laser cladding coating preparation technology, comprises the following steps that：
（1）Oil removing, processing of rust removing are carried out to oil pipe with abluent under room temperature, and it is clean with alcohol washes；Working position is treated with Dye inspectiong to test, it is desirable to working position flawless, pore, inclusion defect；
（2）Use intensity it is high, corrosion-resistant and with the matrix metallurgy good Co-based alloy powder of the compatibility, the Co-based alloy powder according to the component of percentage by weight is：C：0.04%、Cr：23%、Fe：1.6 %、Mo：10%、Si：0.4%、Nb：4.0%, balance of Ni；
（3）Using 5000W crossing current CO2Laser instrument, work platformses are SIMENS CNC laser processing machines；Using coaxial or paraxonic dust feeder by step（2）In Co-based alloy powder be automatically fed into laser molten pool, machined surface formed even compact corrosion-proof sulfur-proof wear-resisting laser cladding coating, thickness is in 6mm；Its technological parameter is as follows：
Focus lamp F=400mm
Cladding power P=5000W
Spot size D=10mm
Scan velocity V=1000mm/min
Overlapping rate 60%；
（4）To step（3）The laser cladding coating of middle preparation carries out crack-detecting and detects and determine whether crack defect generation
（5）Machining is carried out by the requirement of oil pipe on laser cladding coating；
（6）Preservative treatment is carried out to tube inner wall.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, the present invention can be realized in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by claims rather than described above is limited, it is intended that all changes in the implication and scope of the equivalency of claim that will fall are included in the present invention.
In addition, it should be understood that, although this specification is been described by according to embodiment, but not each embodiment only includes an independent technical scheme, this narrating mode of description is only for clarity, those skilled in the art should using description as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, formed it will be appreciated by those skilled in the art that other embodiment.
Claims (3)
1. a kind of corrosion-proof sulfur-proof wear-resisting oil pipe laser cladding coating preparation technology, it is characterised in that comprise the following steps that：
Oil removing, processing of rust removing are carried out to oil pipe with abluent under room temperature, and it is clean with alcohol washes；Working position is treated with Dye inspectiong to test, it is desirable to working position flawless, pore, inclusion defect；
Use intensity it is high, corrosion-resistant and with the matrix metallurgy good Co-based alloy powder of the compatibility, the Co-based alloy powder according to the component of percentage by weight is：C：0.02-0.04%、Cr：20-23%、Fe：1.2-1.6 %、Mo：8-10%、Si：0.2-0.4%、Nb：3.6-4.0%, balance of Ni；
Using 5000W crossing current CO2Laser instrument, work platformses are CNC laser processing machine；Using coaxial or paraxonic dust feeder by step（2）In Co-based alloy powder be automatically fed into laser molten pool, machined surface formed even compact corrosion-proof sulfur-proof wear-resisting laser cladding coating, thickness is in 3-6mm；Its technological parameter is as follows：
Focus lamp F=300-400mm
Cladding power P=2000-5000W
Spot size D=3-10mm
Scan velocity V=200-1000mm/min
Overlapping rate 40%-60%；
To step（3）The laser cladding coating of middle preparation carries out crack-detecting and detects and determine whether crack defect generation；
Machining is carried out by the requirement of oil pipe on laser cladding coating；
Preservative treatment is carried out to tube inner wall.
2. corrosion-proof sulfur-proof wear-resisting oil pipe laser cladding coating preparation technology according to claim 1, it is characterised in that step（2）Described in Co-based alloy powder according to the component of percentage by weight be：C：0.03%、Cr：21.5%、Fe：1.4 %、Mo：9%、Si：0.4%、Nb：3.8%, balance of Ni.
3. corrosion-proof sulfur-proof wear-resisting oil pipe laser cladding coating preparation technology according to claim 1, it is characterised in that step（3）In technological parameter it is as follows：
Focus lamp F=350mm
Cladding power P=3500W
Spot size D=6.5mm
Scan velocity V=600mm/min
Overlapping rate 50%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576984.2A CN106521480A (en) | 2015-09-12 | 2015-09-12 | Corrosion, sulfur and wear resisting oil pipe laser cladding coating layer preparation process |
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| CN201510576984.2A CN106521480A (en) | 2015-09-12 | 2015-09-12 | Corrosion, sulfur and wear resisting oil pipe laser cladding coating layer preparation process |
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| CN106521480A true CN106521480A (en) | 2017-03-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296588A (en) * | 2018-12-10 | 2019-02-01 | 徐工集团工程机械有限公司 | A kind of piston rod and hydraulic cylinder |
| CN110936098A (en) * | 2019-11-07 | 2020-03-31 | 江苏特维克科技有限公司 | High-medium pressure cylinder body split surface defect repairing process |
-
2015
- 2015-09-12 CN CN201510576984.2A patent/CN106521480A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296588A (en) * | 2018-12-10 | 2019-02-01 | 徐工集团工程机械有限公司 | A kind of piston rod and hydraulic cylinder |
| CN110936098A (en) * | 2019-11-07 | 2020-03-31 | 江苏特维克科技有限公司 | High-medium pressure cylinder body split surface defect repairing process |
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Application publication date: 20170322 |