CN108942103B - Manufacturing method of nickel-based alloy steel coiled tubing - Google Patents
Manufacturing method of nickel-based alloy steel coiled tubing Download PDFInfo
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- CN108942103B CN108942103B CN201810864798.2A CN201810864798A CN108942103B CN 108942103 B CN108942103 B CN 108942103B CN 201810864798 A CN201810864798 A CN 201810864798A CN 108942103 B CN108942103 B CN 108942103B
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 91
- 239000010959 steel Substances 0.000 claims abstract description 91
- 238000003466 welding Methods 0.000 claims abstract description 52
- 238000005096 rolling process Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 16
- 229910052786 argon Inorganic materials 0.000 claims description 12
- 238000005238 degreasing Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910001868 water Inorganic materials 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 238000009659 non-destructive testing Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 32
- 238000005260 corrosion Methods 0.000 abstract description 32
- 229910045601 alloy Inorganic materials 0.000 description 13
- 239000000956 alloy Substances 0.000 description 13
- 239000002585 base Substances 0.000 description 7
- 230000035882 stress Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000010949 copper Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000001997 corrosion-resisting alloy Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The application relates to a manufacturing method of a nickel-based alloy steel coiled tubing, which comprises the following components in percentage by weight: 40-45% of Ni, 20-23% of Cr, 2-3% of Mo, 1.8-2.8% of Cu, less than or equal to 1.0% of Mn, less than or equal to 0.2% of Al, less than or equal to 0.02% of S, 0.7-1.0% of Ti, less than or equal to 0.04% of C, less than or equal to 0.45% of Si, and the balance of Fe and inevitable impurities. The manufacturing method comprises the following steps: welding the steel belt, detecting damage, connecting the short steel belt disc to a specified number of meters, adopting a belt supply device to supply the steel belt, cleaning the supplied steel belt through a cleaning device, passing the steel belt through a rolling device and a pipe forming device, performing laser welding and heating, finishing and rolling. The method is improved from the aspects of components and production process of the steel strip for forming the coiled tubing, strip supply equipment, a welding method and the like, so that the produced coiled tubing not only has high strength, but also improves the corrosion resistance of the coiled tubing.
Description
Technical Field
The invention relates to a manufacturing method of a nickel-based alloy steel coiled tubing, which is applicable to the technical field of petroleum engineering.
Background
The nickel-based alloy has high strength and certain oxidation and corrosion resistance at the high temperature of 650-1000 ℃. The alloy is further divided into nickel-based heat-resisting alloy, nickel-based corrosion-resisting alloy, nickel-based wear-resisting alloy, nickel-based precision alloy, nickel-based shape memory alloy and the like according to the main properties. The main alloy elements of the nickel-based corrosion-resistant alloy are copper, chromium and molybdenum, so that the nickel-based corrosion-resistant alloy has good comprehensive performance and can resist various acid corrosion and stress corrosion. The nickel-based corrosion-resistant alloy is mainly used for manufacturing parts for various corrosion-resistant environments such as petroleum, chemical engineering, electric power and the like.
Coiled tubing (also known as coiled tubing), which can be up to ten thousand meters in length, can replace conventional tubing for many operations. The coiled tubing operation equipment has the characteristics of operation under pressure and continuous lifting, and has the advantages of small equipment volume, quick operation period and low cost. Beginning in the 90 s of the twentieth century, coiled tubing technology has been developed with a dramatic leap. The coiled tubing operation device has been known as an universal operation machine, is widely applied to operations such as well workover, well drilling, well completion, well logging and the like of oil and gas fields, and runs through the whole process of oil and gas exploitation. The operating environment of coiled tubing dictates that it will face serious corrosion problems, especially with respect to corrosion of coiled tubing by acids and alkali metals in the formation environment. The prior art does not show precedent of using the nickel-based corrosion-resistant alloy for preparing the coiled tubing, on one hand, the prior art is a technical bias in the field, namely, no one in the field thinks that the nickel-based corrosion-resistant alloy can be used for preparing the coiled tubing; on the other hand, the manufacturing process is limited, and no process which can be used for preparing the nickel-based corrosion-resistant alloy coiled tubing is proposed in the field.
Therefore, how to develop a nickel-based alloy steel coiled tubing with higher strength and more excellent corrosion resistance is a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a method for manufacturing a nickel-base alloy steel coiled tubing, and the nickel-base alloy steel coiled tubing manufactured by the method not only has strong mechanical strength, but also has high stress corrosion cracking resistance.
The application relates to a manufacturing method of a nickel-based alloy steel coiled tubing, which comprises the following steps:
(1) welding the steel strip to form a continuous steel strip of a desired length;
(2) detecting the welding position and the thermal induction area after welding by adopting hardness detection equipment to ensure that the steel belt is not damaged;
(3) connecting the short-coil steel strip to a specified number of meters, and storing and transferring the short-coil steel strip by a reel releasing disc;
(4) uncoiling and straightening the steel strip through a straightener and a conveying mechanism, and supplying the steel strip by a strip supply device;
(5) the supplied steel strip is cleaned by a cleaning device to remove impurities on the surface;
(6) the steel strip passes through a rolling device to generate preliminary deformation, so that the shape of the continuous oil pipe is conveniently formed; then passing the steel strip through a tube forming device to form the shape of the coiled tubing;
(7) welding butt joints of the coiled tubing together by laser welding and polishing;
(8) preserving the heat of the pipe for 2-3min at 1000 +/-20 ℃ by adopting a muffle furnace;
(9) and (4) carrying out finishing and nondestructive testing on the coiled tubing, coating a protective film and rolling.
Wherein the percentage content of each component is as follows: 40-45% of Ni, 20-23% of Cr, 2-3% of Mo, 1.8-2.8% of Cu, less than or equal to 1.0% of Mn, less than or equal to 0.2% of Al, less than or equal to 0.02% of S, 0.7-1.0% of Ti, less than or equal to 0.04% of C, less than or equal to 0.45% of Si, and the balance of Fe and inevitable impurities;
the manufacturing method of the steel strip comprises the following steps: firstly, putting the components into a vacuum induction smelting furnace according to corresponding mass percentages for smelting and casting into a plate blank; secondly, carrying out solution treatment for 3 hours at the temperature of 1090 ℃ and air cooling; thirdly, carrying out transition treatment for 6 hours at 1020 ℃ and air cooling; fourthly, carrying out primary aging treatment at 800 ℃ for 24 hours, and air cooling; carrying out secondary aging treatment at 750 ℃ for 12 hours, and air cooling; fifthly, heating the plate blank to 1130 ℃, wherein the heat preservation time is 15 minutes/mm, the rough rolling is carried out for 15 times according to the thickness of the plate blank, and the rolling speed is 8 m/s; sixthly, the control range of the finish rolling temperature is 920 ℃, the finish rolling is carried out for 8 times, the rolling speed is 2.5 m/s, the width of the rolled steel strip is 118.3mm, and the thickness of the rolled steel strip is 3.2 mm; and seventhly, cooling to room temperature in air and then coiling.
Preferably, the steel strip is welded by adopting a plate-plate butt joint process, argon arc welding is adopted in the welding method, the argon flow of back shielding gas is 1-2L/min, the argon flow of nozzle shielding gas is 8-12L/min, the welding current is 90 +/-10A, the welding speed is 1mm/s, an I-shaped groove is adopted as the groove, the gap of a butt joint is less than or equal to 0.1mm, the electrode spacing is 2mm, and the electrode angle is 10 degrees; the tungsten electrode has a diameter of 2.4mm and the nozzle has a diameter of 6.5 mm.
Preferably, the cleaning device is internally provided with alkaline degreasing fluid, the alkaline degreasing fluid is prepared from 0.7% of sodium hydroxide, 8% of sodium carbonate, 3.5% of sodium silicate and the balance of water by mass, and the temperature of the degreasing fluid in the degreasing process is kept at 85 +/-5 ℃.
Preferably, the laser welding power is 7000 +/-500 w, the welding speed is 2.6 +/-0.2 m/min, the focal length is 232mm, the defocusing amount is-3.2-0 mm, and the flow of protective gas outside a fusion area is 0.5-1.5m3The flow rate of protective gas behind the molten pool is 0.5-1.5m3H, internal protection flow rate of 2.0-2.5m3And h, the type of the protective gas is argon.
Preferably, the strip supply device is a horizontal strip supply device and comprises a horizontal strip discharging disc and a strip storage device, and the steel strip is supplied to the strip storage device from the horizontal strip discharging disc through the straightening structure.
According to the application, the corrosion resistance function of the continuous oil pipe is achieved through the self corrosion resistance of the nickel-based alloy steel, so that the sulfur-resistant grade reaches FF grade; the saline-alkali corrosion resistance of the coiled tubing is improved. In addition, the nickel-based alloy steel material disclosed by the application is high-temperature resistant, can be served in an environment of 550 ℃, and has excellent stress corrosion cracking resistance, pitting corrosion resistance, crevice corrosion resistance, oxidation resistance and non-oxidative hot acid performance.
Drawings
Fig. 1 shows a horizontal tape supply apparatus for continuous tape supply of the present application.
Fig. 2 shows a perspective view of a horizontal pay-off reel of the horizontal tape supply apparatus of the present application.
Fig. 3 shows a top view of the horizontal payout reel of the horizontal tape supply of the present application.
Fig. 4 shows a side view of the horizontal payout reel of the horizontal tape supply of the present application.
FIG. 5 shows a schematic structural view of the horizontal tray subassembly of the present application.
Fig. 6 shows a detailed schematic of the drive system.
Figure 7 shows a perspective view of the belt magazine.
Figure 8 shows a top view of the magazine.
Figure 9 shows a detailed view of the tape magazine.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The nickel-based alloy steel continuous oil pipe comprises the following components in percentage by weight: 40-45% of Ni, 20-23% of Cr, 2-3% of Mo, 1.8-2.8% of Cu, less than or equal to 1.0% of Mn, less than or equal to 0.2% of Al, less than or equal to 0.02% of S, 0.7-1.0% of Ti, less than or equal to 0.04% of C, less than or equal to 0.45% of Si, and the balance of Fe and inevitable impurities.
The nickel-based alloy steel is added with copper and molybdenum, and has acid and alkali metal corrosion resistance in oxidation and reduction environments. The high nickel content provides the alloy with effective stress corrosion cracking resistance. Corrosion resistance is good in various media such as sulfuric acid, phosphoric acid, nitric acid, hydrochloric acid and organic acids, alkali metals such as sodium hydroxide and potassium hydroxide solution. The preparation of the coiled tubing by the nickel-based alloy steel has no precedent in the industry, and the breakthrough application of the material meets the strength and ensures the corrosion resistance, so that the material is a brand-new coiled tubing material and overcomes the technical bias existing in the prior art.
The method for preparing the steel strip for manufacturing the coiled tubing by adopting the nickel-based alloy steel comprises the following steps: firstly, putting the components into a vacuum induction smelting furnace according to corresponding mass percentages for smelting and casting into a plate blank; secondly, carrying out solution treatment for 3 hours at the temperature of 1090 ℃ and air cooling; thirdly, carrying out transition treatment for 6 hours at 1020 ℃ and air cooling; fourthly, carrying out primary aging treatment at 800 ℃ for 24 hours, and air cooling; carrying out secondary aging treatment at 750 ℃ for 12 hours, and air cooling; fifthly, heating the plate blank to 1130 ℃, wherein the heat preservation time is 15 minutes/mm, the rough rolling is carried out for 15 times according to the thickness of the plate blank, and the rolling speed is 8 m/s; sixthly, the control range of the finish rolling temperature is 920 ℃, the finish rolling is carried out for 8 times, the rolling speed is 2.5 m/s, the width of the rolled steel strip is 118.3mm, and the thickness of the rolled steel strip is 3.2 mm; and seventhly, cooling to room temperature in air and then coiling.
The manufacturing method of the nickel-based alloy steel coiled tubing comprises the following steps:
(1) welding the steel strip by adopting a plate-plate butt joint process to form a continuous steel strip with required length;
the steel strip is in a welding position through double-side welding plate receiving equipment by adopting inert gas shielded welding, and a welding machine can complete double-side multi-pass welding only by left-right welding, so that the surface is smooth, and the surplus height is small. The welding seam adopts 55-degree angle plate butt joint, so that the burning angle phenomenon is reduced, the stress concentration is avoided, and the stress is uniform after the pipe is formed. Plate butt welding equipment is known in the art and will not be described in detail herein.
The welding method adopts argon arc welding, the argon flow of back shielding gas is 1-2L/min, the argon flow of nozzle shielding gas is 8-12L/min, the welding current is 90 +/-10A, the welding speed is 1mm/s, the groove adopts an I-shaped groove, the gap of the butt joint is less than or equal to 0.1mm, the electrode spacing is 2mm, and the electrode angle is 10 degrees; the tungsten electrode has a diameter of 2.4mm and the nozzle has a diameter of 6.5 mm. Before welding, spot welding is carried out on the sharp-angled position in advance, cracks generated by shrinkage are prevented, low-speed welding is selected in the welding process, the cooling speed of a molten pool is slowed down, and the gas concentration is guaranteed.
(2) Detecting the welding position and the thermal induction area after welding by adopting ultrasonic hardness detection equipment to ensure that the steel belt is not damaged; for example, X-ray can be selected for nondestructive inspection.
(3) The short steel belt coils are connected to the specified number of meters and stored and transported by the belt releasing discs, so that the steel belt can be continuously supplied in the production process.
(4) Uncoiling and straightening the steel strip through a straightener and a conveying mechanism, and supplying the steel strip by adopting a horizontal strip supply device;
it should be noted that, in the prior art, a vertical tape supply mechanism is generally used for supplying the tape, that is, the steel tape reels are all placed on the reel plane perpendicular to the ground. The problems that arise from this are that the steel belt disc needs to be raised to a vertical state, the operation is very inconvenient, and the storage and transportation are also very inconvenient. On the other hand, when the supply reel in the prior art is used for supplying the strip, after the whole steel strip is supplied, the production of the continuous oil pipe needs to be suspended, so that the next steel strip is put into the supply reel, and the continuous production can be ensured. Thereby causing a mid-pause in the supply belt.
The belt supply mechanism in the application is a horizontal belt supply device for continuously supplying the belt, so that the supply and the transportation of the steel belt are greatly facilitated, and the operation is very convenient. The steel strip is divided into an outer cache region and an inner direct supply region which are connected in an arch-shaped reverse strip storage mode, and the rotation of the steel strip can be controlled respectively, so that the steel strip can be stored in the outer cache region firstly and then supplied to the inner direct supply region. Therefore, even when the horizontal unreeling disc stops working, the supply of the tape to the tube making machine is not stopped, and the continuous production requirement of the continuous oil tube is met. The horizontal tape supply apparatus related to the present application will be described in detail below.
(5) A belt store is placed upstream of the coiled tubing manufacturing system to continuously supply steel strip to the pipe making machine.
As described above, according to the horizontal tape supply device, the steel tape is always positioned at the outermost side of the tape storage device by using the bow-shaped reverse tape storage mode, and the occurrence of locking is prevented.
(6) The supplied steel strip is cleaned by a cleaning device to remove impurities on the surface.
Alkaline degreasing fluid can be placed in the cleaning device, the alkaline degreasing fluid is made of sodium hydroxide, sodium carbonate, sodium silicate and water, the mass fractions of the components are 0.7% of the sodium hydroxide, 8% of the sodium carbonate and 3.5% of the sodium silicate respectively, the balance is water, and the temperature of the degreasing fluid is kept at 85 +/-5 ℃ in the degreasing process.
(7) The steel strip passes through a rolling device to generate preliminary deformation, so that the shape of the continuous oil pipe is conveniently formed; the steel strip is then passed through a tube forming device to form the shape of the coiled tubing.
Specific rolling devices and tube forming devices are described in chinese patent application 201610004312.9 and will not be described in detail herein.
(8) And welding the butt joints of the coiled tubing together by laser welding.
The welding laser power is 7000 plus or minus 500w, the welding speed is 2.6 plus or minus 0.2m/min, the focal length is 232mm, the defocusing amount is minus 3.2-0mm, and the flow of protective gas outside the fusion zone is 0.5-1.5m3The flow rate of protective gas behind the molten pool is 0.5-1.5m3H, internal protection flow rate of 2.0-2.5m3And h, the type of the protective gas is argon.
The laser welding enables the welding seam to be narrow, the heat affected zone is small, the welding seam size precision is high, the inner burr is naturally avoided, the problem of the inner burr of a common continuous oil pipe is solved, the drift diameter is increased, the inner surface is approximately smooth and transited, and complex operation can be carried out.
(9) The external burrs are trimmed by the external three groups of polishing heads, so that the effect of smooth transition with the external surface is achieved; and (5) performing primary rounding and fixing the position of the pipe.
(10) And (3) preserving the heat of the pipe for 2-3min at 1000 +/-20 ℃ by adopting a muffle furnace.
(11) The size reaches a specified range by finishing the coiled tubing, the roundness is ensured to meet the requirement, and the coiled tubing is subjected to nondestructive testing to determine that no internal damage exists.
(12) The whole tube is subjected to size measurement, the outer tube wall is coated with a protective film, and winding is performed by using a flat cable and automatic equipment.
The horizontal tape supply apparatus for continuous tape supply of the present application will be described below with reference to the accompanying drawings, comprising a horizontal unwinding reel 1 and a tape storage 2, a steel tape being supplied from the horizontal unwinding reel 1 to the tape storage 2 via a straightening structure 3, and the structures of the horizontal unwinding reel 1 and the tape storage 2 will be described in detail in the following description. The whole coiled steel belt is placed on the horizontal unwinding disc 1, and the belt storage device 2 is divided into an external buffer area 21 and an internal direct supply area 22. The steel belts in the external cache region 21 and the internal direct supply region 22 can be independently controlled to be wound in and wound out, and the steel belts are supplied by adopting an arch-shaped reverse belt storage 23 mode between the external cache region and the internal direct supply region, so that continuous belt supply is ensured, and the phenomenon of locking of the steel belts is prevented. The steel strip is finally fed out from the inside of the inner straight feed zone 22 to the production line of the coiled tubing.
As shown in fig. 2 to 4, which respectively show a perspective view, a top view and a side view of the horizontal payout reel 1 of the horizontal tape supply apparatus of the present application. As shown in the figure, the horizontal reel comprises a support 10, a horizontal rotating disc 11, a centering sleeve 12, a disc brake assembly 13 and a belt brake assembly 14, the support 10 plays a role of supporting the whole reel, a coiled steel reel is placed on the horizontal rotating disc 11, and a central circle region of the steel reel is sleeved on the centering sleeve 12. The disc brake assembly 13 produces a braking effect by clamping the periphery of the horizontal turntable 11 for braking the horizontal turntable when it is required to slow it down. The belt brake assembly 14 may be provided in two pieces to hold the steel belt reel from both sides and prevent the steel belt from being unwound.
As shown in fig. 3, the disc brake assembly 13 includes a first brake lever 131, a first brake rocker 132 and a brake pad 133, the first brake lever 131 may be a hydraulic lever or an electric control lever, and the first brake lever 131 and the first brake rocker 132 are both rotatably disposed on a base, such as the stand 10 or directly disposed on the ground. A brake pad 133 is hingedly disposed with the first brake rocker arm 132. When the first brake lever 131 is extended, the first brake rocker 132 is pushed to move in the direction of the horizontal turntable 11, and the brake piece 133 abuts against the side portion of the horizontal turntable 11, thereby generating a braking effect. Similarly, the belt brake assembly 14 includes a second brake lever 141, a second brake rocker 142 and a brake roller 143, the second brake lever 141 can be a hydraulic lever or an electric control lever, and the second brake lever 141 and the second brake rocker 142 are both rotatably disposed on a base, which can be, for example, the stand 10 or directly on the ground. A brake roller 143 is provided at an end of the second brake rocker arm 142. When the second brake lever 141 is extended, the second brake rocker 142 is pushed to move toward the center of the horizontal turntable 11, and the brake roller 143 abuts against the outside of the steel tape reel, thereby generating a braking effect.
Referring to fig. 5, a schematic of the construction of the horizontal tray subassembly of the present application is shown. The drive system includes a power assembly 19, a clutch 15, a power transmission 191, a small bevel gear 16, a large bevel ring gear 17, and a rotating sleeve 18. The power assembly 19 drives the small bevel gear 16 to rotate through the clutch 15 and the power transmission mechanism 191, and the small bevel gear 16 is meshed with the large bevel ring gear 17, so that the large bevel ring gear 17 is driven to rotate in a horizontal plane. As shown in fig. 5, the large bevel ring gear 17 is fixedly connected to the periphery of the rotating sleeve 18, and the centering sleeve 12 is fixed to the center of the rotating sleeve 18, so that the large bevel ring gear 17 can drive the rotating sleeve 18 and the centering sleeve 12 to rotate in the horizontal plane, and drive the steel belt reel to rotate, thereby feeding out the steel belt. As shown in fig. 6, a detailed schematic of the drive system is shown. The power transmission mechanism 191 includes a hollow shaft cylinder 192 and a retaining ring 193, the shaft cylinder 192 is fixed to the transmission shaft by a bearing 194, and the retaining ring 193 is disposed outside the transmission shaft to prevent foreign matter from entering the inside thereof. Preferably, the upper portion of the centering sleeve 12 is provided with four sector wings 121 spaced apart so that it can be elastically compressed to accommodate slight differences in the hollow inner diameter of the steel tape reel.
As shown in fig. 1, the straightening structure 3 includes pinch rolls 31, a driver 32, and guide rolls 33, and the steel strip is straightened by being forced while passing through the pinch rolls 31 disposed opposite to each other, the driver 32 drives the pinch rolls 31 to rotate, and the straightened steel strip is guided to the strip storage 2 through a plurality of rows of the guide rolls 33 disposed opposite to each other.
As shown in fig. 7-9, a perspective view, a top view and a detail view of the belt magazine 2 are shown, respectively. The belt storage device 2 comprises a base 28, an outer disc 24, an inner disc 25 and an intermediate shaft 29, wherein the outer disc 24 and the inner disc 25 are arranged on the base 28 and are fixedly connected with the base 28 through the intermediate shaft 29. Outer disc 24 includes an outer disc guide wheel seat 243 and an outer ring seat 244, and outer disc guide wheel seat 243 is provided on the outer periphery of outer ring seat 244. The outer rotating roller 241 is radially disposed on an outer ring seat 244, and the outer guide roller 242 is vertically established on an outer disc guide roller seat 243. The inner disc 25 includes an inner disc guide roller seat 253 and an inner ring seat 254, and the inner disc guide roller seat 253 is disposed in a central region of the inner ring seat 254. Inner rotating roller 251 is radially disposed on inner ring seat 254, and inner idler roller 252 is vertically disposed on inner disk idler seat 253. As shown in fig. 9, the top of the inner disc guide roller seat 253 is provided with a groove in which the inner rotating disc 27 is disposed. When installed, the inner race seat 254 is installed into the outer race seat 244 and then mounted to the base 28 via the intermediate shaft 29. An outer disc guide 243 is installed at the periphery of the outer ring 244, and a plurality of outer rotating rollers 241 are installed in a radial direction, while a plurality of outer guide rollers 242 are installed on the outer disc guide 243. An inner disc guide roller seat 253 is installed at a central region of the inner ring seat 254, and a plurality of inner rotating rollers 251 are installed in a radial direction, while a plurality of inner guide rollers 252 are installed on the inner disc guide roller seat 253. Finally, the rotation shaft of the inner rotating disk 27 is installed in the inner disk guide roller seat 253, and the inner rotating disk 27 is rotatable about its rotation shaft. Wherein outer turning roller 241 is inclined outwardly, e.g., 3-10 degrees; the inner rotating roller 251 is inclined inward, for example, 3 to 10 degrees. The outer rotating roller 241 and the inner rotating roller 251 may be driven to rotate, respectively.
The operation of the belt store 2 of the present application will now be described with reference to figures 1, 7 and 8. The steel strip straightened by the straightening structure 3 first enters the outer disc 24 along the outer guide roller 242 and forms a steel strip disc in the outer buffer area 21 on the outer disc 24. Since the outer rotating roller 241 and the inner rotating roller 251 are driven to rotate separately, the outer rotating roller 241 may be driven to rotate first to wind the steel strip continuously around the outer reel 24 to form an outer steel tape reel. Meanwhile, since the outer rotating roller 241 is inclined outward, the steel tape spool slides toward the outer guide roller 242 under the self-weight action, forming a compact outer buffer tray. The steel strip between the outer buffer zone 21 and the inner straight feed zone 22 is connected by means of an arcuate reverse reservoir 23. Similarly, because the inner rotating roller 251 is inclined inward, the inner straight feed area 22 slides toward the inner guide roller 252 under its own weight, forming a compact inner straight feed tray. The outgoing end of the steel strip is supplied from the inside of the inner rotating roller 251 to the pipe making machine along the surface of the inner rotating disk 27. Preferably, the inner rotating disc 27 may have a sloped-like surface to conform to the feeding out trajectory of the steel strip.
The tape supply device formed by the horizontal tape releasing disc and the tape storage device realizes horizontal continuous tape supply, and solves the problems of complex operation, high requirement on operation space and poor accuracy of a vertical tape supply mode in the prior art. Simultaneously through designing neotype storage of belt ware, divide into the steel band tape dish in the outside buffer memory that connects through the reverse storage of bow type with the steel band dish in the district is directly supplied to inside, can control its rotation respectively for the steel band can be stored earlier on outside buffer memory, then supplies to the inside district that directly supplies. Therefore, even when the horizontal unreeling disc stops working, the supply of the tape to the tube making machine is not stopped, and the continuous production requirement of the continuous oil tube is met.
As described above, the present invention provides a method for manufacturing a nickel-based alloy steel coiled tubing, which is improved in various aspects, such as composition and production process of a steel strip forming the coiled tubing, strip supply equipment, a welding method, etc., so that the produced coiled tubing has not only high strength, but also improved corrosion resistance. The corrosion resistance of the coiled tubing is achieved through the self corrosion resistance of the nickel-based alloy steel, so that the sulfur-resistant grade reaches FF grade; the saline-alkali corrosion resistance of the coiled tubing is improved. In addition, the nickel-based alloy steel material disclosed by the application is high-temperature resistant, can be served in an environment of 550 ℃, and has excellent stress corrosion cracking resistance, pitting corrosion resistance, crevice corrosion resistance, oxidation resistance and non-oxidative hot acid performance.
Although the embodiments of the present invention have been described above, the above descriptions are only for the convenience of understanding the present invention, and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The manufacturing method of the nickel-based alloy steel coiled tubing is characterized by comprising the following steps of:
(1) welding the steel strip to form a continuous steel strip of a desired length;
(2) detecting the welding position and the thermal induction area after welding by adopting hardness detection equipment to ensure that the steel belt is not damaged;
(3) connecting the short-coil steel strip to a specified number of meters, and storing and transferring the short-coil steel strip by a reel releasing disc;
(4) uncoiling and straightening the steel strip through a straightener and a conveying mechanism, and supplying the steel strip by a strip supply device;
(5) the supplied steel strip is cleaned by a cleaning device to remove impurities on the surface;
(6) the steel strip passes through a rolling device to generate preliminary deformation, so that the shape of the continuous oil pipe is conveniently formed; then passing the steel strip through a tube forming device to form the shape of the coiled tubing;
(7) welding butt joints of the coiled tubing together by laser welding and polishing;
(8) preserving the heat of the pipe for 2-3min at 1000 +/-20 ℃ by adopting a muffle furnace;
(9) carrying out finishing and nondestructive testing on the continuous oil pipe, coating a protective film and rolling;
the steel belt is supplied to the belt storage device from the horizontal discharging disc through the straightening structure;
the horizontal unwinding disc comprises a support, a horizontal rotating disc, a centering sleeve, a disc brake assembly and a belt brake assembly, wherein a wound steel belt disc is placed on the horizontal rotating disc, a central circle area of the steel belt disc is sleeved on the centering sleeve, the disc brake assembly can clamp the periphery of the horizontal rotating disc, and the belt brake assembly can be clamped on two sides of the steel belt disc; the disc brake assembly comprises a first brake rod, a first brake rocker arm and a brake block, wherein the first brake rod and the first brake rocker arm are both rotatably arranged on the base, and the brake block is hinged with the first brake rocker arm; the belt brake assembly comprises a second brake rod, a second brake rocker arm and a brake roller, the second brake rod and the second brake rocker arm are both rotatably arranged on the base, and the brake roller is arranged at the end part of the second brake rocker arm;
the belt storage device comprises a base, an outer disc, an inner disc and an intermediate shaft, wherein the outer disc and the inner disc are arranged on the base and are fixedly connected with the base through the intermediate shaft; the outer disc comprises an outer disc guide wheel seat and an outer ring seat, the outer disc guide wheel seat is arranged on the periphery of the outer ring seat, the outer rotating roller is arranged on the outer ring seat along the radial direction and inclines outwards, and the outer guide wheel roller is vertically arranged on the outer disc guide wheel seat; the inner disc comprises an inner disc guide wheel seat and an inner ring seat, the inner disc guide wheel seat is arranged in the central area of the inner ring seat, the inner rotating roller is arranged on the inner ring seat along the radial direction and is inclined inwards, and the inner guide wheel roller is vertically arranged on the inner disc guide wheel seat.
2. The manufacturing method according to claim 1, wherein the nickel-based alloy steel coiled tubing comprises the following components in percentage by weight: 40-45% of Ni, 20-23% of Cr, 2-3% of Mo, 1.8-2.8% of Cu, less than or equal to 1.0% of Mn, less than or equal to 0.2% of Al, less than or equal to 0.02% of S, 0.7-1.0% of Ti, less than or equal to 0.04% of C, less than or equal to 0.45% of Si, and the balance of Fe and inevitable impurities;
the manufacturing method of the steel strip comprises the following steps: firstly, putting the components into a vacuum induction smelting furnace according to corresponding mass percentages for smelting and casting into a plate blank; secondly, carrying out solution treatment for 3 hours at the temperature of 1090 ℃ and air cooling; thirdly, carrying out transition treatment for 6 hours at 1020 ℃ and air cooling; fourthly, carrying out primary aging treatment at 800 ℃ for 24 hours, and air cooling; carrying out secondary aging treatment at 750 ℃ for 12 hours, and air cooling; fifthly, heating the plate blank to 1130 ℃, wherein the heat preservation time is 15 minutes/mm, the rough rolling is carried out for 15 times according to the thickness of the plate blank, and the rolling speed is 8 m/s; sixthly, the control range of the finish rolling temperature is 920 ℃, the finish rolling is carried out for 8 times, the rolling speed is 2.5 m/s, the width of the rolled steel strip is 118.3mm, and the thickness of the rolled steel strip is 3.2 mm; and seventhly, cooling to room temperature in air and then coiling.
3. The manufacturing method according to claim 1 or 2, characterized in that the steel strip is welded by adopting a plate-plate butt joint process, argon arc welding is adopted in the welding method, the argon flow of back shielding gas is 1-2L/min, the argon flow of nozzle shielding gas is 8-12L/min, the welding current is 90 +/-10A, the welding speed is 1mm/s, an I-shaped groove is adopted in the groove, the gap of the butt joint is less than or equal to 0.1mm, the electrode spacing is 2mm, and the electrode angle is 10 degrees; the tungsten electrode has a diameter of 2.4mm and the nozzle has a diameter of 6.5 mm.
4. The manufacturing method according to claim 1 or 2, wherein an alkaline degreasing solution is placed in the cleaning device, the alkaline degreasing solution is made of 0.7% of sodium hydroxide, 8% of sodium carbonate, 3.5% of sodium silicate and the balance of water, the mass fractions of the components are sodium hydroxide, sodium carbonate, sodium silicate and water, and the temperature of the degreasing solution in the degreasing process is kept at 85 ± 5 ℃.
5. The manufacturing method according to claim 1 or 2, wherein the laser welding power is 7000 ± 500w, the welding speed is 2.6 ± 0.2m/min, the focal length is 232mm, the defocus amount is-3.2-0 mm, and the shielding gas flow outside the fusion zone is 0.5-1.5m3The flow rate of protective gas behind the molten pool is 0.5-1.5m3H, internal protection flow rate of 2.0-2.5m3And h, the type of the protective gas is argon.
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| CN201810864798.2A CN108942103B (en) | 2018-08-01 | 2018-08-01 | Manufacturing method of nickel-based alloy steel coiled tubing |
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| CN201810864798.2A CN108942103B (en) | 2018-08-01 | 2018-08-01 | Manufacturing method of nickel-based alloy steel coiled tubing |
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| CN108942103B true CN108942103B (en) | 2020-05-12 |
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| CN108942103A (en) | 2018-12-07 |
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Denomination of invention: A kind of manufacturing method of nickel-based alloy steel coiled tubing Effective date of registration: 20220816 Granted publication date: 20200512 Pledgee: TANGSHAN BANK Co.,Ltd. Pledgor: HEBEI HUATONG WIRES AND CABLES GROUP Co.,Ltd.|SHINDA(TangShan) CREATIVE OIL&GAS EQUIPMENT Co.,Ltd. Registration number: Y2022990000532 |
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Date of cancellation: 20231204 Granted publication date: 20200512 Pledgee: TANGSHAN BANK Co.,Ltd. Pledgor: HEBEI HUATONG WIRES AND CABLES GROUP Co.,Ltd.|SHINDA(TangShan) CREATIVE OIL&GAS EQUIPMENT Co.,Ltd. Registration number: Y2022990000532 |