CN108296305A - A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe - Google Patents
A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe Download PDFInfo
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- CN108296305A CN108296305A CN201711482167.6A CN201711482167A CN108296305A CN 108296305 A CN108296305 A CN 108296305A CN 201711482167 A CN201711482167 A CN 201711482167A CN 108296305 A CN108296305 A CN 108296305A
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- Prior art keywords
- welding
- pipe
- heavy caliber
- thick wall
- composite bimetal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of manufacturing methods of heavy caliber thick wall composite bimetal pipe, including：Steel-plate ultrasound wave examines, milling in, pre-bending, JCO moldings, straightening, prewelding, outside weld, interior weldering, heat treatment, full circle, X-ray detection of welding, outside weld Magnetic testing, tube body ultrasound examination, hydrostatic test, chamfered edge, acid wash passivation, presentation quality inspection.The tack welding process is plasma, outer Welding is multiplewire submerged arc welding, interior Welding is heated filament argon arc welding.The Q245R/N08825 heavy caliber thick wall list longitudinal joints manufactured using the method, which are welded composite bimetal pipe not only, has base's low-temperature impact toughness height, welding point items good mechanical performance, while weld seam internal coated layer has excellent resistance to every corrosive nature.
Description
Technical field
The invention belongs to multiple tube processing technique fields, and in particular to a kind of manufacture of heavy caliber thick wall composite bimetal pipe
Method.
Background technology
Composite bimetal pipe from 2001 China oil gas field field apply since, it is low with its by the development in more than ten years
Honest and clean price, higher bearing capacity and excellent corrosion resistance, shoots up in tubing field.Either multiple tube manufactures
The construction of quantity, manufacturing technology, manufacturing capacity, production scale or the research and development technology of enterprise, the troop that markets, be obtained for compared with
Fast development.In addition, the theory of multiple tube and application technical research are also more and more.In addition to multiple tube manufacturing enterprise itself, state
Inside and outside numerous well-known research institutions and research institution also assist in studying team, make composite bimetal pipe application field into one
Step is widened.Domestic oil gas pipeline develops to submerged pipeline, chemical industry and power industry from land oil, natural gas line
The attention rate of multiple tube is also further increased.Currently, domestic accumulative using nearly 2000 kilometers of composite bimetal pipe.
Composite bimetal pipe can not only solve the Anticorrosion Problems of oil and gas industry, but also can largely save noble metal
Material reduces the cost of use of user, meanwhile, which has just changed from the introducing phase of product life cycle in the domestic market
For the growth stage, the market space is very big, and growth is good.
Composite bimetal pipe at home just bring about entirely new prospect by oilfield applications, and welding procedure user is not fully understood and slaps
It holds, this is current each most concerned problem of elephant, and is welded the key technology point that multiple tube manufacturer need solve.
The country is welded multiple tube to bimetallic and has been carried out early-stage study, especially oil-gas pipeline unit in charge of construction ring at the scene
Seam forms a team to have carried out considerable soldering test and research in terms of welding.But for the total wall thickness using the production of JCO molding modes
It is less it to be welded multiple tube relevant report more than the bimetallic of 27mm.
Invention content
For problems of the prior art, it is an object of the invention to design to provide a kind of heavy caliber thick wall bimetallic
The manufacturing method of multiple tube, the multiple tube manufactured can meet the high sulfur-containing medium operating mode of puguang gas field and use.
The manufacturing method of a kind of heavy caliber thick wall composite bimetal pipe, it is characterised in that include the following steps：
1）Clad steel plate ultrasound examination：100% ultrasound examination compound interface is not associated with defect, the base of the clad steel plate
Layer is Q245R, and cladding is nickel-base alloy N08825；
2）Milling side：Clad steel plate edge is processed using cutterhead using edge milling machines, so that plank is rolled rear longitudinal joint and opens two-sided V-type
Groove；
3）JCO is molded：For cladding upper, plank longitudinal edge is first carried out multi-pass pre-bending pressure by base under, using JCO prebending machines
System, is pressed into " J " shape, then steel plate is repeatedly suppressed through JCO molding machines, is pressed into " C " shape, finally makes in the intermediate compacting of steel plate
" O " shape that steel plate is finally open at narrow gap；
4）It is curved afterwards；JCO steel pipes after molding are placed on trimmer, using with the matched internal model of pipe diameter and external mold, to steel
The straight section of pipe longitudinal edge carries out integer compacting, makes the molding edge blind area curvature composite demands of JCO, to follow-up prewelding and whole
Circle plays crucial effect；
5）Prewelding：Steel pipe after the crook reason after is sent into Prewelding machine, adjustment and welding machine pressure roller position, using plasma gas
The welding manner of protection is welded, and forms that complete penetraction and fusion in welding is continuous, pre- welding line of reliable in quality；
6）Outside weld：Using three Lincoln welds, base's groove is welded on the outside of steel pipe, 1# use straight polarity direct current, 2#,
3# are exchange；
7）Interior weldering：Interior weldering is heated filament argonaut welding；
8）Heat treatment：It is heat-treated using bell furnace normalizing process, normalizing process is：600 ± 10 DEG C of holding temperature, soaking time 1
Hour, it is air-cooled after coming out of the stove；The technique is just determined through numerous studies and experiment, has both eliminated the stress that welding generates, and is ensured
The impact flexibility of base's weld seam, and avoid the sensitizing temperature section of cladding weld seam ensure that the excellent resistance to of cladding weld seam
Corrosive nature；
9）Full circle：Full circle is carried out using four-piece type assembling die to steel pipe overall length, ensures pipe diameter ovality ± 1mm；Using
Four-piece type assembling die replaces traditional semi-circular assembling die, the reshaper not only to there is circle trimming function also to have aligning work(concurrently
Can, solve the problem on deformation after heat treatment well in this way, product circularity can control within the scope of ± 1mm；
10）X-ray detection of welding：100%X ray detections are carried out to the steel pipe inner and outer welding after welding；
11）Outside weld Magnetic testing：100% Magnetic testing is carried out to the steel pipe outside weld after welding；
12）Tube body ultrasound examination：100% ultrasound detection is carried out to the steel pipe tube body after welding and is not associated with defect；
13）Hydrostatic test：To steel pipe by Zhi Jinhang hydrostatic tests, test pressure 9.5MPa, voltage stabling control should be no less than
10s；
14）Chamfered edge：Retaining wall on slope is carried out to pipe end；
15）Acid wash passivation：Whole polishing first is carried out to steel pipe inner wall, then uses the rotary acid cleaning process of end socket tube body, is solved
The key problem of multiple tube cladding acid wash passivation；
16）Presentation quality inspection.
A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe, it is characterised in that step 1）In clad steel
Plate carries out heat treatment process of the metallurgical junction merging through 900 DEG C of heat preservations 2 hours using Explosion composite mode and is made, that is, ensure that base
Toughness in turn ensure the corrosion resistance of cladding.
A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe, it is characterised in that step 3）Middle pre-bending compacting
Number is 40-50 passages, and molding compacting number is 55-65 passages.
A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe, it is characterised in that step 5）Middle prewelding be etc.
Ion welds, and ion-gas, welding gun protection gas and back-protective gas are straight argon, welding current I=250-270A, weldingvoltage U=35-
38V, welding speed V=90-120mm/min.
A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe, it is characterised in that step 6）In Welder
Skill parameter is：1# electric current I=680-950A, voltage U=31-36V；2# electric current I=530-820A, voltage U=32-40V；3#
Electric current I=440-720A, voltage U=38-44V, silk spacing are 28mm, nozzle to workpiece distance 35mm, welding speed V=700-
1000mm/min。
A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe, it is characterised in that step 7）In interior Welding
For：Using DC reverse connection, electric current I=215-280A, voltage U=13-19V, welding speed V=100-180mm/min, wire feed rate v
=1000-2000mm/min。
Q245R/N08825 heavy caliber thick walls list longitudinal joint made from manufacturing method of the present invention is welded composite bimetal pipe not only
High, the welding point items good mechanical performance with base low-temperature impact toughness, at the same weld seam internal coated layer have it is excellent resistance to each
Item corrosive nature.
Specific implementation mode
Below in conjunction with specific embodiment, invention is further described in detail.
Embodiment：Q245R/N08825 diameters 711x（32+3）Single longitudinal joint is welded multiple tube manufacture.
Raw material use the Q245R/N08825 Explosion composite steel plates of wall thickness 32+3mm, groundwork thickness 32mm, cladding thickness
3mm, base's essential element content：C≤0.20, Si≤0.35, Mn0.50-1.00, P≤0.025, S≤0.015, Alt
>=0.020, for base such as without miscellaneous stipulations, wherein Cu≤0.30%, Ni≤0.30%, Cr≤0.30%, Mo≤0.080%, this
The total content of a little elements should be not more than 0.70%.Cladding essential element content：C≤0.050, Si≤0.5, Mn≤1.0, P≤
0.020, S≤0.005, Ni38.0-46.0, Cr19.5-23.5, Mo2.5-3.5, Cu1.5-3.0, Al≤0.2,
Ti0.6-1.2, Fe≥22.0。
Raw material longitudinal joint opens two-sided double V-groove, after JCO is molded longitudinal joint by outside weld and it is interior be welded, and use
600 DEG C of normalizing process ensure the performance of base and cladding, specially：1）Steel plate first carries out the 100% compound boundary of ultrasound examination
Face is not associated with defect；2）Milling side, groove size are 22-30 ° of base's bevel angle, root face 4.5mm, cladding bevel angle 30-
45 °, cladding groove depth 5-8mm；3）Pre-flanging, sheet material edge pre-bending is carried out using JCO prebending machines, and edges of boards are examined using pattern
Curvature after pre-bending ensures compliance with requirement；4）JCO is molded, and the steel plate after pre-bending is calculated compacting passage according to outer diameter and wall thickness
With each amount of feeding, steel plate half is first pressed into " J " type, then presses the other half according still further to identical passage and the amount of feeding, most
Entire steel plate is finally suppressed in the centre of steel plate at " c-type " afterwards, and at " O-shaped " of opening, opened gap is less than 200mm, soft
Property compacting single amount of feeding 40mm；5）It is curved afterwards, by JCO steel pipes after molding in dedicated reshaper, using special and steel pipe
The matched internal model of internal diameter and external mold carry out integer compacting to the straight section of steel pipe longitudinal edge, keep the molding edge blind areas JCO bent
Rate meets the requirements；6）Prewelding, by it is rear it is curved after steel pipe be sent into Prewelding machine, adjustment Prewelding machine pressure roller position, using plasma gas
The welding manner of protection is welded, and forms that complete penetraction and fusion in welding is continuous, pre- welding line of reliable in quality, and specially ion-gas, welding gun is protected
It is straight argon, welding current I=250-270A, weldingvoltage U=35-38V, welding speed V=90- to protect gas and back-protective gas
120mm/min；7）Outside weld, using three Lincoln welds, base's groove is welded on the outside of steel pipe, and 1# are using direct current just
It connects, 2#, 3# are exchange, and welding condition is：1# electric current I=680-950A, voltage U=31-36V；2# electric current I=
530-820A, voltage U=32-40V；3# electric current I=440-720A, voltage U=38-44V, silk spacing are 28mm, nozzle to workpiece
Distance 35mm, welding speed V=700-1000mm/min；8）Interior weldering, interior weldering is heated filament argonaut welding, and interior Welding is：Using
DC reverse connection, electric current I=215-280A, voltage U=13-19V, welding speed V=100-180mm/min, wire feed rate v=1000-
2000mm/min；9）Heat treatment, heat treatment are using bell furnace normalizing process, normalizing process：600 ± 10 DEG C of holding temperature is protected
1 hour warm time, air-cooled after coming out of the stove, purpose eliminates the stress that welding generates, while avoiding the sensitizing temperature section of cladding, ensures
Its corrosion resistance；10）Full circle uses steel pipe overall length and carries out full circle using four-piece type assembling die, ensure internal diameter ovality ±
1mm, while straight degree meets standard requirement；11）X-ray detection of welding carries out 100%X rays to the steel pipe inner and outer welding after welding
Detection；12）Outside weld Magnetic testing carries out 100% Magnetic testing to the steel pipe outside weld after welding；13）Tube body ultrasound detection,
100% ultrasound detection is carried out to the steel pipe tube body after welding and is not associated with defect；14）Hydrostatic test, to steel pipe by Zhi Jinhang hydrostatic
Pressure experiment, test pressure 9.5MPa, voltage stabling control should be no less than 10s；15）Chamfered edge carries out retaining wall on slope, bevel angle to pipe end
35-37.5 °, root face 0.5-1.5mm；16）Acid wash passivation, using the whole light polishing of inner wall, then both ends are using special end socket, envelope
Head is intermediate there are acid adding hole, by pickling solution by acid adding hole flow in pipes inside, entire inner wall is completed in then tube body rotation
Pickling.
When steel pipe manufactures, base is located at outside, and cladding is located inside, and prewelding is carried out using plasma welding method（It is fixed
Position weldering）, side group layer weld seam out is then welded using submerged arc welding mode, is finally welded using heated filament argon arc welding welding mode
Go out inside cladding weld seam, heat treatment carries out whole normalizing process using bell furnace to steel pipe, and the manufacturing method in the present invention can be real
Existing Q245R/N08825 φ 711*（32+3）Base's welding point obdurability of the manufacture of heavy wall vertical masonry joint multiple tube, welded tube is excellent,
And cladding weld seam corrosion resistance is suitable with cladding base material.
Claims (6)
1. a kind of manufacturing method of heavy caliber thick wall composite bimetal pipe, it is characterised in that include the following steps：
1）Clad steel plate ultrasound examination：100% ultrasound examination compound interface is not associated with defect, the base of the clad steel plate
Layer is Q245R, and cladding is nickel-base alloy N08825；
2）Milling side：Clad steel plate edge is processed using cutterhead using edge milling machines, so that plank is rolled rear longitudinal joint and opens two-sided V-type
Groove；
3）JCO is molded：For cladding upper, plank longitudinal edge is first carried out multi-pass pre-bending pressure by base under, using JCO prebending machines
System, is pressed into " J " shape, then steel plate is repeatedly suppressed through JCO molding machines, is pressed into " C " shape, finally makes in the intermediate compacting of steel plate
" O " shape that steel plate is finally open at narrow gap；
4）It is curved afterwards；JCO steel pipes after molding are placed on trimmer, using with the matched internal model of pipe diameter and external mold, to steel
The straight section of pipe longitudinal edge carries out integer compacting, and the molding edge blind area curvature of JCO is made to meet the requirements；
5）Prewelding：Steel pipe after the crook reason after is sent into Prewelding machine, adjustment and welding machine pressure roller position, using plasma gas
The welding manner of protection is welded, and forms that complete penetraction and fusion in welding is continuous, pre- welding line of reliable in quality；
6）Outside weld：Using three Lincoln welds, base's groove is welded on the outside of steel pipe, 1# use straight polarity direct current, 2#,
3# are exchange；
7）Interior weldering：Interior weldering is heated filament argonaut welding；
8）Heat treatment：It is heat-treated using bell furnace normalizing process, normalizing process is：600 ± 10 DEG C of holding temperature, soaking time 1
Hour, it is air-cooled after coming out of the stove；
9）Full circle：Full circle is carried out using four-piece type assembling die to steel pipe overall length, ensures pipe diameter ovality ± 1mm；
10）X-ray detection of welding：100%X ray detections are carried out to the steel pipe inner and outer welding after welding；
11）Outside weld Magnetic testing：100% Magnetic testing is carried out to the steel pipe outside weld after welding；
12）Tube body ultrasound examination：100% ultrasound detection is carried out to the steel pipe tube body after welding and is not associated with defect；
13）Hydrostatic test：To steel pipe by Zhi Jinhang hydrostatic tests, test pressure 9.5MPa, voltage stabling control should be no less than
10s；
14）Chamfered edge：Retaining wall on slope is carried out to pipe end；
15）Acid wash passivation：Whole polishing first is carried out to steel pipe inner wall, then uses the rotary acid cleaning process of end socket tube body；
16）Presentation quality inspection.
2. a kind of manufacturing method of heavy caliber thick wall composite bimetal pipe as described in claim 1, it is characterised in that step 1）
In clad steel plate using Explosion composite mode carry out metallurgical junction merge through 900 DEG C heat preservation 2 hours heat treatment process be made.
3. a kind of manufacturing method of heavy caliber thick wall composite bimetal pipe as described in claim 1, it is characterised in that step 3）
Middle pre-bending compacting number is 40-50 passages, and molding compacting number is 55-65 passages.
4. a kind of manufacturing method of heavy caliber thick wall composite bimetal pipe as described in claim 1, it is characterised in that step 5）
Middle prewelding welds for plasma, and ion-gas, welding gun protection gas and back-protective gas are straight argon, welding current I=250-270A, weldering
Connect voltage U=35-38V, welding speed V=90-120mm/min.
5. a kind of manufacturing method of heavy caliber thick wall composite bimetal pipe as described in claim 1, it is characterised in that step 6）
In welding condition be：1# electric current I=680-950A, voltage U=31-36V；2# electric current I=530-820A, voltage U=
32-40V；3# electric current I=440-720A, voltage U=38-44V, silk spacing are 28mm, nozzle to workpiece distance 35mm, welding speed
Spend V=700-1000mm/min.
6. a kind of manufacturing method of heavy caliber thick wall composite bimetal pipe as described in claim 1, it is characterised in that step 7）
In interior Welding be：Using DC reverse connection, electric current I=215-280A, voltage U=13-19V, welding speed V=100-180mm/
Min, wire feed rate v=1000-2000mm/min.
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|---|---|---|---|
| CN201711482167.6A CN108296305A (en) | 2017-12-29 | 2017-12-29 | A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe |
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| CN201711482167.6A CN108296305A (en) | 2017-12-29 | 2017-12-29 | A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe |
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| CN108296305A true CN108296305A (en) | 2018-07-20 |
Family
ID=62867687
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014266A (en) * | 2019-03-22 | 2019-07-16 | 中钢不锈钢管业科技有限公司 | A kind of manufacturing method of nickel-copper alloy welded tube |
| CN110216357A (en) * | 2019-05-28 | 2019-09-10 | 中钢不锈钢管业科技山西有限公司 | A kind of manufacturing method of bimetallic composite welded pipe |
| CN111975295A (en) * | 2020-08-07 | 2020-11-24 | 张家港世珍集装箱部件有限公司 | Corrosion-resistant lock rod steel pipe forming process |
| CN112077538A (en) * | 2020-09-04 | 2020-12-15 | 江苏武进不锈股份有限公司 | Preparation process of stainless steel welded pipe for marine oil and gas transmission |
| CN112705583A (en) * | 2020-12-29 | 2021-04-27 | 信达科创（唐山）石油设备有限公司 | Composite welding pipe making heat treatment production line and process |
| WO2021143358A1 (en) * | 2020-01-16 | 2021-07-22 | 孖垚建筑科技(上海)有限公司 | Tube and fabrication method therefor, and tube module and fabrication method therefor |
| CN115351519A (en) * | 2022-10-20 | 2022-11-18 | 江苏银环精密钢管有限公司 | Preparation method of inner cylinder for heat exchange unit of high-temperature gas cooled reactor evaporator |
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| CN112077538A (en) * | 2020-09-04 | 2020-12-15 | 江苏武进不锈股份有限公司 | Preparation process of stainless steel welded pipe for marine oil and gas transmission |
| CN112705583A (en) * | 2020-12-29 | 2021-04-27 | 信达科创（唐山）石油设备有限公司 | Composite welding pipe making heat treatment production line and process |
| CN115351519A (en) * | 2022-10-20 | 2022-11-18 | 江苏银环精密钢管有限公司 | Preparation method of inner cylinder for heat exchange unit of high-temperature gas cooled reactor evaporator |
| CN115351519B (en) * | 2022-10-20 | 2023-08-22 | 江苏银环精密钢管有限公司 | Preparation method of inner cylinder for heat exchange unit of high-temperature gas cooled reactor evaporator |
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Application publication date: 20180720 |