CN103556079A - High-strength water riser main-pipe with excellent anti-fatigue performance and manufacturing method thereof - Google Patents
High-strength water riser main-pipe with excellent anti-fatigue performance and manufacturing method thereof Download PDFInfo
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Abstract
The invention discloses a high-strength water riser main-pipe with excellent anti-fatigue performance and a manufacturing method thereof. the water riser main-pipe comprises the following chemical components: by weight, 0.04-0.08% of C, 0.15-0.35% of Si, 1.55-1.85% of Mn, P being less than or equal to 0.015%, S being less than or equal to 0.003%, Ni being less than or equal to 0.30%, Cr being less than or equal to 0.30%, Cu being less than or equal to 0.25%, Mo being less than or equal to 0.25%, 0.02-0.060% of Nb, V being less than or equal to 0.06%, 0.008-0.06% of Ti, 0.010-0.040% of Al and N being less than or equal to 0.008%, Al/N being greater than or equal to 3, Ni+Cu+Mo+Cr being less than or equal to 0.70%, and Nb+V+Ti being less than or equal to 0.12%. Carbon equivalent Ceq is less than or equal to 0.45, and cold crack coefficient Pcm is less than or equal to 0.23. A microstructure is a composite fine-grain structure of acicular ferrite+bainite. The invention provides an X80 high-strength water riser main-pipe with fatigue resistance and high dimensional accuracy. The water riser main-pipe is characterized by having excellent comprehensive performance such as plasticity, low-temperature toughness, fracture resistance, corrosion resistance and the like.
Description
Technical field:
The invention belongs to oil country tubular goods field, relate to a kind of anti-fatigue performance good high strength marine riser supervisor and manufacture method thereof, the marine drilling exploration X80 steel-grade of especially a kind of high strength with good anti-fatigue performance and low-temperature flexibility, corrosion-resistant, high dimensional accuracy, caliber is Φ 533.4mm, ocean marine riser straight-line joint submerged arc welding tube forming technique and multi-wire submerged-arc welding technique that wall thickness is 25.4mm.
Background technology:
Drilling water-separation pipe system is on marine drilling platform, to carry out the important equipment of drilling well.Offshore Drilling Riser is single is the main body of riser system, it is a liquid conducting pipes that leads to subsea blow out preventer device from marine drilling platform, be mainly used to isolate extraneous seawater, for circulation of drilling fluid, BOP is installed under water, supports various control pipelines, and play the guide effect from rig floor to subsea wellhead installations of drilling rod, drilling tool, be one of the exploitation of offshore oil and gas important component part of producing and critical equipment.
Along with marine oil and gas development of resources extension to deep-sea from shallow sea, the severe ocean Service Environment such as sea-water corrosion, surge, ocean current environment, ocean vortex-induced vibration and deep-water pressure, deep sea drilling equipment has been proposed to strict requirement, especially the indexs such as deep sea drilling marine riser supervisor's anti-fatigue performance, intensity, toughness, the routed property of resistance to compression and dimensional precision have been had to strict requirement.Therefore, Offshore Drilling Riser is a kind of oil drill equipment with excessive risk, highly difficult, hi-tech, high added value, and technical requirements is high, and development difficulty is large.
The country at present with Offshore Drilling Riser development ability is few in number, and riser system design is all monopolized by foreign country with utilisation technology, only has the countries such as the U.S., Norway, France, Russia, and other country and company also do not possess development ability.Deep sea drilling marine riser technology only rests in the states such as the U.S., Norway, Japan.China's marine exploration and development is started late by the impact of the factors such as equipment, technology, up to now, China at Offshore Drilling Riser technical elements still in blank, whole dependence on import.
The emphasis of global ocean oil and gas development is transferred to deepwater regions just gradually.Moving towards the Major Strategic of deep water, the new millennium marine oil development of exploitation South Sea Ye Shi China selects.Therefore exploitation has the deep sea drilling marine riser of independent intellectual property right, not only worldwide has wide market outlook ，Dui China marine oil gas field exploitation also to have its own strategic significance.
Chinese patent 200820029879 relates to one and connects to form a pipe string by a plurality of single marine risers are upper and lower, and the ocean deepwater drilling riser system device forming after other parts of supporting connection.200820211642 relate to the full-automatic rapid-acting coupling of a kind of Offshore Drilling Riser.It comprises that the mother law orchid that is arranged on marine riser top is, the public law orchid of bottom, automatic stuck device and auxiliary line joint four parts, public law blue cooperation of mother law blue and last joint marine riser, the blue cooperation of public law of the blue and rear joint marine riser of mother law, automatic stuck device is arranged on flange combination section, the edge of flange is with auxiliary line, and auxiliary line joint is arranged on auxiliary line.PCT/CN2011/075363 relates to the coupling device of a kind of drilling water-separation pipe using for ocean deepwater environment between single and single, is specifically related to a kind of rotary locking piece type drilling riser connector.Domestic patent yet there are no the method for manufacturing technology that relates to marine riser supervisor.
Summary of the invention:
The object of the invention is to overcome the shortcoming of above-mentioned prior art, the marine drilling exploration X80 steel-grade of a kind of high strength with good anti-fatigue performance and low-temperature flexibility, corrosion-resistant, high dimensional accuracy is provided, caliber is Φ 533.4mm, ocean marine riser supervisor and manufacture method that wall thickness is 25.4mm.
The object of the present invention is to provide a kind of have anti-fatigue performance, high strength, there is the excellent combination properties such as good plasticity, low-temperature flexibility, break resistance, erosion resistance, the X80 steel-grade Deep Water Drilling Riser supervisor of high dimensional accuracy.By low-carbon microalloyed Composition Design, adopting JCO forming technique, multi-wire submerged-arc welding technique and machinery expanding technology to manufacture diameter is Φ 533.4mm, the X80 steel-grade Offshore Drilling Riser longitudinal submerged arc welded pipe that wall thickness is 25.4mm.Horizontal and the longitudinal yield strength >=555MPa of steel pipe body, tensile strength >=625MPa, horizontal and longitudinal yield tensile ratio≤0.90 of body, welding joint tensile strength >=625MPa; At 0 ℃ of lower tube body average shear area >=85% that laterally drops hammer, monodrome shear area >=75%; At the crack tip opening displacement CTOD at 0 ℃ of lower tube body and welding joint place eigenwert δ m >=0.254mm; Body and welding joint highest hardness value≤260HV10; Eccentricity≤6.0%, ovality≤0.5%, linearity≤0.1%.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is to adopt following concrete technology step:
1, the X80 hot-rolled steel sheet that adopts TMCP technique to manufacture, its chemical composition (mass percent) is: C0.04%～0.08%, Si0.15%～0.35%, Mn1.55%～1.85%, P≤0.015%, S≤0.003%, Ni≤0.30%, Cr≤0.30%, Cu≤0.25%, Mo≤0.25%, Nb0.02%～0.060%, V≤0.06%, Ti0.008%～0.06%, Al0.010%～0.040%, N≤0.008%, Al/N >=3, Ni+Cu+Mo+Cr≤0.70%, Nb+V+Ti≤0.12%, surplus is iron and inevitable impurity, its carbon equivalent Ceq≤0.45, cold crack FACTOR P cm≤0.23.Steel plate microstructure is the compound fine grained texture of acicular ferrite+bainite.
2, breath arc plate is drawn in welding: breath arc plate is drawn in four straight flange place welding in Plate Welding direction, the arc crater when end of welding bead during by striking and breath arc is guided to outside weldment, strengthened the constraint (restraint) degree of longitudinal joint distal portion, bear the larger tensile stress that distal portion produces, improve the Distribution of Magnetic Field of distal portion, reduce the degree of magnetic blow.
3, milling limit: finished edge.The steel plate that is 25.4mm to thickness, upper and lower groove angle is 35 °, and the width of root face is 8.0mm, and lower groove depth is 10.5mm, and after milling, steel plate width is 1577～1583mm.The object of finished edge is to guarantee the complete penetration of welding process energy, avoids inside in welding process to occur incomplete penetration defect.
4, pre-flanging: utilize prebending machine to carry out edges of boards pre-bending, crimp step-length is 1800mm, and pressing force is 3.66 * 10
3kN, according to steel pipe caliber dimensional requirement, selects suitable mould, makes edges of boards have satisfactory curvature.
5, JCO moulding: on JCO forming machine, first half of the steel plate after pre-bending repeatedly suppressed, be pressed into " J " shape, then second half of steel plate is crooked equally, be pressed into " C " shape, finally form " O " shape of opening.Pressing process, suppresses passage and every time draught is determined according to the dimensions of steel pipe.When thickness is 25.4mm steel plate, compacting number of times adopts 13 times, and step-length is 100mm, and each draught is at 2.0mm～3.0mm.Because the intensity of steel plate is high, elasticity is large, after distortion, resilience is serious, and every time draught should adopt excessive depressing, and to guarantee reaching standard shape after resilience, and adopts as far as possible the pressing process of more number of times.
6, joint close and prewelding: by adjusting the position of joint close Prewelding machine pressure roller; the bevel for welding of the steel pipe after moulding is matched; guarantee that misalignment, gap size meet the requirements, and adopt high-power mixed gas arc welding to weld, form continuously, standard, stay-in-grade pre-welding line.
7, interior weldering: adopt four union melt weldings bevel for welding inside steel pipe to weld, first of four union melt weldings is DC reverse connection, second to four for exchanging.
In four submerged arcs of marine riser straight-line joint submerged arc welding tube of X80 Φ 533.4 * 25.4mm, Welding parameter is: first electric current I=1000～1100A, voltage 31～35V, second electric current I=850～950A, voltage 33～37V, the 3rd electric current I=650～750A, voltage 35～39V, the 4th electric current I=550～650A, voltage 37～41V; Distance between weldingwires d=17～22mm; Welding speed V=130～150cm/min.
8, outside weld: adopt four union-melt welds bevel for welding outside steel pipe to weld, first that adopts four union melt weldings is DC reverse connection, and second to four for exchanging.
The marine riser straight-line joint submerged arc welding tube outside weld processing parameter of X80 Φ 533.4 * 25.4mm is: first electric current I=1150～1250A, voltage 31～35V, second electric current I=950～1050A, voltage 33～37V, the 3rd electric current I=850～950A, voltage 36～40V, the 4th electric current I=750～850A, voltage U=38～42V; Distance between weldingwires d=16～22mm; Welding speed V=130～150cm/min.
In said welding method, the mass percent of weld seam chemical composition is C0.04%～0.08%, Si0.15%～0.35%, Mn1.65%～1.85%, P≤0.015%, S≤0.005%, Ni≤0.30%, Cr≤0.30%, Cu≤0.30%, Mo≤0.30%, Nb0.02%～0.06%, V0.008%～0.060%, Ti0.008%～0.060%, Al0.010%～0.040%, N≤0.008%, Al/N >=3, Ni+Cu+Mo+Cr≤0.70%, Nb+V+Ti≤0.12%, carbon equivalent Ceq is 0.41～0.45, cold crack FACTOR P cm is 0.16～0.21.The microstructure of weld seam is that acicular ferrite is main tissue.
9, ultrasound examination I: steel pipe inner and outer welding and heat affected zone, weld seam both sides part after welding are carried out to 100% inspection.
10, X-ray examination I: the steel pipe inner and outer welding after adopting image processing system to welding carries out 100% X ray industrial television inspection, guarantees the sensitivity of flaw detection.
11, machinery expanding: steel pipe total length is carried out to 0.7%～1.3% hole enlargement to improve the dimensional precision of steel pipe, and improve the distribution of steel pipe internal stress.
12, the water test: the steel pipe after hole enlargement is carried out to 100% hydrostatic test by root, test pressure, for 95%～100% of regulation SMYS, checks the strength level of steel pipe and whether has leak point.
13, chamfered edge: the steel pipe being up to the standards is carried out to pipe end slope-mouth processing, reach needed pipe end slope-mouth size.
14, ultrasonic testing II: the steel pipe inner and outer welding after hole enlargement, hydraulic pressure and heat affected zone, weld seam both sides part are carried out to 100% inspection, to get rid of hole enlargement, the issuable defect of hydraulic pressure.
15, X-ray examination II: the steel pipe inner and outer welding after hole enlargement and the water test is carried out to 100% industrial television inspection and pipe end film making, to get rid of hole enlargement, the issuable defect of hydraulic pressure.
16, pipe end magneticpowder testing: carry out pipe end magneticpowder testing to find pipe end defect.
17, aligning: carry out operation steel pipe aligning, the linearity of standard steel pipe by three-point bending mode.
18, visual appearance inspection: steel pipe apparent size and visual appearance are measured and checked, qualified steel pipe need to carry out anticorrosion and coating according to user on inspection, hands over user to assemble.
Owing to having adopted technique scheme, the technical progress that the present invention obtains is:
(1) the present invention is by using design of alloy and the microstructures Control of hot-rolled steel sheet with straight-line joint submerged arc welding tube to X80 steel-grade Deep Water Drilling Riser, steel plate foreign matter content and inclusion morphology are effectively controlled, there is high strength, high tenacity, high uniform elongation, low yield strength ratio and narrower intensity interval, and there is good corrosion resistance nature, guaranteed the property indices requirement of steel pipe after tubulation.
(2) the invention solves X80 steel-grade, caliber is the problem that moulding control in the high-intensity high-tenacity JCOE straight-line joint submerged arc welding tube manufacture that is 25.4mm of Φ 533.4mm, wall thickness, Weld Performance, geometric accuracy are difficult to meet technical requirements.The present invention adopts JCO moulding, and selects rational welding material and technique, particularly controls moulding, welding and expanding technology parameter, makes welded tube performance meet X80 steel-grade marine riser supervisor's performance requriements.
(3) gordian technique of the present invention is the optimization of JCO moulding, welding and expanding technology, and processing parameter and processing step that the present invention is above-mentioned are obtained through test of many times.Its gordian technique is mainly manifested in:
In moulding is controlled, because armor plate strength is high, elasticity is large, the serious problems that the nonaffine deformation of JCO moulding process light plate causes partial operation sclerosis, toughness and uniform elongation to decline.The present invention is, thickness wide according to steel plate, intensity and die size, and Accurate Analysis is rationally determined compacting number of times and single pass draught, make steel pipe in JCO moulding process each several part distortion evenly, stable performance.Adopt excessive depressing and the pressing process of more number of times, to guarantee to reach after steel plate resilience the dimensional requirement of steel pipe, make to there is good circularity after steel pipe forming.
In weldprocedure, first by preferred weld material, guarantee that weld seam has the intensity of a little higher than mother metal and good toughness.For controlling performance and the welding quality of weld seam, the present invention adopts a kind of welding process of four tandems, and inside and outside weld seam divides respectively four layers of continuous welding and once completes, and first is bottom, and second and the 3rd is packing layer, and the 4th is this surface layer.Be characterized in: the one, can reduce the heat input of unit length, dwindle heat affected zone, make high Grade Pipeline Steel weld seam performance around reach optimum; It two is to have taken into account inner quality and visual appearance; It three is to have taken into account high efficiency production and excellent quality.
While determining welding setting, take into full account in four wire bonds each effect, by each electric current of reasonable setting, voltage, angle, distance between weldingwires and welding speed, make weld seam obtain suitable depth of penetration and good pattern, be conducive to gas and slag floating in welding process simultaneously.On this basis, in order to reduce the impact of welding heat input on welded heat affecting zone obdurability, each electric current, voltage and distance between weldingwires are further optimized, adopt lower heat input, the distance between weldingwires of four union-melt welds of tandem is adjusted into 18～22mm, thereby avoid heat to concentrate, reduce the impact of heat affected zone around of welding heat butt welded seam, guarantee the performance of welded heat affecting zone.The final acquisition of weld seam be take acicular ferrite as tissue main, that have good obdurability, solved the problem that welded tube local heating in welding process causes obdurability to reduce.
In expanding technology, according to the size after steel pipe forming, shape situation, determine best expanding technology, guarantee size after pipe expanding, shape and physicochemical property, solved the problem that steel pipe causes strength increase, toughness and uniform elongation to reduce due to work hardening when machinery expanding.
By the technology that each operation is strict, control, make the properties of final steel pipe meet the requirements of X80 drilling water-separation pipe straight-line joint submerged arc welding tube for deep-sea completely.
Accompanying drawing explanation:
Fig. 1 is welding joint Hardness Surveillance position view;
Fig. 2 is displaing micro tissue topography's (acicular ferrite) of body base metal test specimen;
Fig. 3 is displaing micro tissue topography's (acicular ferrite) at steel pipe seam place;
Fig. 4 is Pipe Hydrostatic Test graphic representation (average hydraulic pressure value: 32.26MPa, continues the dwell time: 20 seconds for maximum hydraulic pressure value: 32.45MPa, minimum hydraulic pressure value: 32.08MPa).
Wherein: a is mother metal; B is heat affected zone; C is weld seam.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, embodiments of the invention are as follows:
1. adopt the controlled rolling steel plate of the TMCP X80 that thickness is 25.4mm, its chemical composition (mass percent) is: C0.06%, Si0.21%, Mn1.78%, P0.012%, S0.002%, Ni0.13%, Cr0.13%, Cu0.12%, Mo0.10%, Nb0.04%, V0.004%, Ti0.015%, Al0.03%, B0.0003%, N0.0046%, Al/N=6.52, Ni+Cu+Mo+Cr=0.48%, Nb+V+Ti=0.059%, carbon equivalent Ceq is 0.42, cold crack FACTOR P cm is 0.18.
2, breath arc plate is drawn in welding: at the place, four right angles of steel plate rolling direction, respectively weld one and draw breath arc plate, the arc crater when end of welding bead in when welding during by striking and breath arc is guided to outside weldment, improves the Distribution of Magnetic Field of distal portion, reduces the degree of magnetic blow.
3. milling limit: finished edge.The steel plate that is 25.4mm to thickness, upper and lower groove angle is 35 °, and the width of root face is 8.0mm, and lower groove depth is 10.5mm.
4. pre-flanging: utilize prebending machine to carry out edges of boards pre-bending, according to caliber size requirement, make edges of boards there is satisfactory curvature.
5.JCO moulding: first half of the steel plate after pre-bending suppressed through 6 passage steppings on JCO forming machine, be pressed into " J " shape, then second half of steel plate is crooked equally, be pressed into " C " shape, finally " 0 " shape of middle the pressing one-time formation opening of steel plate.Whole pressing process, adopts 13 passage compression mouldings, and draught per pass is 3.0mm.In actual production, can, according to actual steel pipe forming situation, suitably adjust.
6. joint close and prewelding: steel pipe is sent into joint close Prewelding machine by track; by adjusting the position of joint close Prewelding machine pressure roller; make coupling that the bevel for welding of the steel pipe after moulding is good together, and adopt shielded welding to weld, form continuously, standard, stay-in-grade pre-welding line.
7. interior weldering: adopt four union melt weldings bevel for welding inside steel pipe to weld, first adopts DC reverse connection, and second to four for exchanging.Interior weldering welding condition is: first electric current 1050A, voltage 33V, and second electric current 900A, voltage 35V, the 3rd electric current 700A, voltage 37V, the 4th electric current 600A, voltage 39V, distance between weldingwires is 20mm, welding speed is 140cm/min.
8. outside weld: adopt four union melt weldings bevel for welding outside steel pipe to weld, first adopts DC reverse connection, and second to four for exchanging.Outside weld welding condition is: first electric current 1200A, voltage 33V, and second electric current 1000A, voltage 35V, the 3rd electric current 900A, voltage 38V, the 4th electric current 800A, voltage 40V, distance between weldingwires is 20mm, welding speed is 140cm/min.
In said welding method, the mass percent of weld seam chemical composition is C0.07%, Si0.28%, Mn1.81%, P0.014%, S0.004%, Ni0.089%, Cr0.090%, Cu0.097%, Mo0.26%, Nb0.02%, V0.003%, Ti0.02%, Al0.03%, N0.0063%, Al/N=4.76, Ni+Cu+Mo+Cr=0.469%, Nb+V+Ti=0.043%, Ceq0.44, Pcm0.20, the microstructure of weld seam is that acicular ferrite is main tissue.
9, ultrasound examination I: steel pipe inner and outer welding and heat affected zone, weld seam both sides part after welding are carried out to 100% inspection.
10, X-ray examination I: the steel pipe inner and outer welding after welding is carried out to 100% industrial television inspection.
11, machinery expanding: steel pipe total length is carried out to 1.2% hole enlargement to improve the dimensional precision of steel pipe, and improve the distribution of steel pipe internal stress.
12, the water test: steel pipe is carried out to 100% hydrostatic test, test pressure is 32.26Mpa, and the dwell time is greater than 20s.
13, chamfered edge: carry out tube end maching, be processed into satisfactory pipe end slope-mouth.
14, ultrasonic testing II: the steel pipe inner and outer welding after hole enlargement, hydraulic pressure and heat affected zone, weld seam both sides part are carried out to 100% inspection, to get rid of hole enlargement, the issuable defect of hydraulic pressure.
15, X-ray examination II: the steel pipe inner and outer welding after hole enlargement and the water test is carried out to 100% industrial television inspection and pipe end film making, to get rid of hole enlargement, the issuable defect of hydraulic pressure.
16, pipe end magneticpowder testing: pipe end is carried out to magneticpowder testing.
17, aligning: carry out steel pipe aligning, the linearity of standard steel pipe.
18, visual appearance inspection: steel pipe apparent size and visual appearance are measured and checked, qualified steel pipe need to carry out anticorrosion, coating according to user on inspection, hands over user to assemble.
What table 1, table 2, table 3, table 4, table 5 and table 6 provided is physicochemical property and the outward appearance geometrical dimension detected result of the steel pipe material object of this example, in table, can find out, the X80 steel-grade, caliber that utilizes manufacturing technology manufacture of the present invention has good fatigue resistance and high dimensional precision, the excellent combination properties such as plasticity, toughness and erosion resistance for 25.4mm ocean marine riser supervisor for Φ 533.4mm, wall thickness.
Table 1 steel pipe Erichsen test result
Table 2 steel pipe Charpy impact test result
Table 3 steel pipe DWTT test-results
Table 4 crack tip opening displacement (CTOD) test-results
Table 5 welding joint hardness Vickers hardnes test result (HV10)
| Detection position | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| Hardness (HV10) | 210 | 209 | 210 | 217 | 228 | 200 | 216 | 220 | 212 | 221 | 222 | 229 | 209 | 215 |
Table 6 apparent size detected result
| Ovality | Linearity | Wall thickness uniformity coefficient |
| 0.1％～0.32％ | 0.04％～0.06％ | 4.0％～5.6％ |
The process for making of steel pipe comprises that welding draws breath arc plate, milling limit, pre-flanging, JCO moulding, joint close and prewelding, interior weldering, outside weld, ultrasound investigation for the first time, X-ray examination, machinery expanding, the water test, chamfered edge, groove processing, ultrasound investigation for the second time, X-ray examination, pipe end magnetic particle inspection, aligning and visual appearance inspection for the second time for the first time.The interior external welding of steel pipe adopts four tandem union melt weldings, and by selecting suitable welding wire, solder flux, controls moulding and welding condition, has solved steel pipe local heating in welding process and has caused obdurability and the serious problem reducing of unit elongation.By rational JCO moulding and expanding technology parameter, and align operation by steel pipe, the unrelieved stress causing while eliminating moulding and welding, improve steel pipe internal stress distribution, in tubulation process, each several part distortion is even, performance is even to make steel pipe, has solved the problem that steel pipe causes strength increase, toughness and uniform elongation to reduce due to work hardening in tubulation process; Improved the pipe deformation being caused by welding effect, made steel pipe geometrical dimension, as caliber ovality, wall thickness uniformity coefficient, linearity etc. reach desired precision.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by submitted to claims.
Claims (7)
1. the good high strength marine riser of anti-fatigue performance is responsible for, it is characterized in that: according to mass percent, marine riser supervisor's Chemical Composition is C0.04%～0.08%, Si0.15%～0.35%, Mn1.55%～1.85%, P≤0.015%, S≤0.003%, Ni≤0.30%, Cr≤0.30%, Cu≤0.25%, Mo≤0.25%, Nb0.02%～0.060%, V≤0.06%, Ti0.008%～0.06%, Al0.010%～0.040%, N≤0.008%, Al/N >=3, Ni+Cu+Mo+Cr≤0.70%, Nb+V+Ti≤0.12%, its carbon equivalent Ceq≤0.45, cold crack FACTOR P cm≤0.23, microstructure is the compound fine grained texture of acicular ferrite+bainite.
2. the manufacture method that high strength marine riser is responsible for as claimed in claim 1, is characterized in that: comprise welding and draw breath arc plate, milling limit, pre-flanging, JCO moulding, joint close and prewelding, interior weldering, outside weld, ultrasound investigation for the first time, X-ray examination, machinery expanding, the water test, chamfered edge, groove processing, ultrasound investigation for the second time, X-ray examination, pipe end magnetic particle inspection, aligning and visual appearance inspection for the second time for the first time.
3. the manufacture method that high strength marine riser is responsible for as claimed in claim 2, is characterized in that, described steel pipe is to utilize the steel pipe that JCO molding mode manufacture X80 steel-grade, caliber are 25.4mm for Φ 533.4mm, wall thickness; First utilize JCO forming machine by half of the steel plate after pre-bending through repeatedly step compacting, be pressed into " J " shape, again second half of steel plate carried out to identical stepping number of times compacting, be pressed into " C " shape, finally at middle the pressing one-time of whole steel plate, make " O " shape of its formation opening; The compacting number of times adopting is 13 times, and step-length is 100mm, and each draught is at 2.0mm～3.0mm.
4. the manufacture method that high strength marine riser is responsible for as claimed in claim 2, is characterized in that: described machinery expanding is that steel pipe total length is carried out to 0.7%～1.3% hole enlargement.
5. the manufacture method that high strength marine riser is responsible for as claimed in claim 2, is characterized in that: described interior weldering adopts four union melt weldings bevel for welding inside steel pipe to weld, and first adopts DC reverse connection, and second to four for exchanging; Interior Welding parameter is: first electric current I=1000～1100A, voltage 31～35V, second electric current I=850～950A, voltage 33～37V, the 3rd electric current I=650～750A, voltage 35～39V, the 4th electric current I=550～650A, voltage 37～41V; Distance between weldingwires d=17～22mm; Welding speed V=130～150cm/min.
6. the manufacture method that high strength marine riser is responsible for as claimed in claim 2, is characterized in that: described outside weld operation adopts four union-melt welds bevel for welding outside steel pipe to weld, and first adopts DC reverse connection, and second to four for exchanging; Interior Welding parameter is: first electric current I=1150～1250A, voltage 31～35V, second electric current I=950～1050A, voltage 33～37V, the 3rd electric current I=850～950A, voltage 36～40V, the 4th electric current I=750～850A, voltage U=38～42V; Distance between weldingwires d=16～22mm; Welding speed V=130～150cm/min.
7. the manufacture method that high strength marine riser is responsible for as claimed in claim 2, it is characterized in that: in described interior weldering and outside weld, the mass percent of weld seam chemical composition is C0.04%～0.08%, Si0.15%～0.35%, Mn1.65%～1.85%, P≤0.015%, S≤0.005%, Ni≤0.30%, Cr≤0.30%, Cu≤0.30%, Mo≤0.30%, Nb0.02%～0.06%, V0.008%～0.060%, Ti0.008%～0.060%, Al0.010%～0.040%, N≤0.008%, Al/N >=3, Ni+Cu+Mo+Cr≤0.70%, Nb+V+Ti≤0.12%, carbon equivalent Ceq is 0.41～0.45, cold crack FACTOR P cm is 0.16～0.21, the microstructure of weld seam is that acicular ferrite is main tissue.
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| CN201310478765.1A CN103556079B (en) | 2013-10-14 | 2013-10-14 | The high strength marine riser supervisor that a kind of anti-fatigue performance is excellent and manufacture method thereof |
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| CN201310478765.1A CN103556079B (en) | 2013-10-14 | 2013-10-14 | The high strength marine riser supervisor that a kind of anti-fatigue performance is excellent and manufacture method thereof |
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| CN103556079B CN103556079B (en) | 2015-10-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104404387A (en) * | 2014-10-29 | 2015-03-11 | 江苏沙钢集团有限公司 | Steel plate for ultralow-temperature and high-pressure service delivery tubes, and its making method |
| CN104451431A (en) * | 2014-11-19 | 2015-03-25 | 钢铁研究总院 | High-performance marine riser board and production method |
| CN104858536A (en) * | 2015-06-05 | 2015-08-26 | 江苏德创制管有限公司 | Method for producing large-diameter thick-wall longitudinal submerged arc welded pipe |
| CN105734444A (en) * | 2016-05-05 | 2016-07-06 | 宝鸡石油钢管有限责任公司 | High-strength thick-wall welded steel pipe for deep sea pipeline and production method thereof |
| CN106119685A (en) * | 2016-06-23 | 2016-11-16 | 宝鸡石油钢管有限责任公司 | A kind of anti-deep water conquassation Offshore Drilling Riser and manufacture method thereof |
| CN106148846A (en) * | 2016-08-19 | 2016-11-23 | 山东钢铁股份有限公司 | A kind of thick-specification high-tenacity X80 pipe fitting steel steel plate and manufacture method |
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| CN106367685A (en) * | 2016-08-30 | 2017-02-01 | 江阴兴澄特种钢铁有限公司 | X80 and below steel grade pipeline steel for deep-sea drilling marine riser and preparation method thereof |
| CN107142427A (en) * | 2017-04-25 | 2017-09-08 | 中国石油天然气集团公司 | A kind of spiral forming X80 steel-grade marine riser supervisor and its manufacture method |
| CN107541664A (en) * | 2016-06-28 | 2018-01-05 | 宝山钢铁股份有限公司 | A kind of X80 levels think gauge pipeline steel composite board and its manufacture method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310119A (en) * | 2011-09-02 | 2012-01-11 | 中国石油集团渤海石油装备制造有限公司 | Manufacturing method of X65 pipeline steel longitudinal submerged arc welded pipe for undersea use |
| CN102851613A (en) * | 2011-06-28 | 2013-01-02 | 鞍钢股份有限公司 | Hot-rolled steel plate for ocean riser with low cost and high performance and production method thereof |
-
2013
- 2013-10-14 CN CN201310478765.1A patent/CN103556079B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851613A (en) * | 2011-06-28 | 2013-01-02 | 鞍钢股份有限公司 | Hot-rolled steel plate for ocean riser with low cost and high performance and production method thereof |
| CN102310119A (en) * | 2011-09-02 | 2012-01-11 | 中国石油集团渤海石油装备制造有限公司 | Manufacturing method of X65 pipeline steel longitudinal submerged arc welded pipe for undersea use |
Non-Patent Citations (1)
| Title |
|---|
| 李东等: "厚壁直缝管五丝埋弧焊工艺的开发与应用", 《焊管》, vol. 30, no. 3, 31 May 2007 (2007-05-31) * |
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| CN104451431A (en) * | 2014-11-19 | 2015-03-25 | 钢铁研究总院 | High-performance marine riser board and production method |
| CN104858536A (en) * | 2015-06-05 | 2015-08-26 | 江苏德创制管有限公司 | Method for producing large-diameter thick-wall longitudinal submerged arc welded pipe |
| CN105734444A (en) * | 2016-05-05 | 2016-07-06 | 宝鸡石油钢管有限责任公司 | High-strength thick-wall welded steel pipe for deep sea pipeline and production method thereof |
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| CN106148846B (en) * | 2016-08-19 | 2017-10-31 | 山东钢铁股份有限公司 | A kind of thick-specification high-tenacity X80 pipe fitting steel steel plates and manufacture method |
| CN106148846A (en) * | 2016-08-19 | 2016-11-23 | 山东钢铁股份有限公司 | A kind of thick-specification high-tenacity X80 pipe fitting steel steel plate and manufacture method |
| CN106367685A (en) * | 2016-08-30 | 2017-02-01 | 江阴兴澄特种钢铁有限公司 | X80 and below steel grade pipeline steel for deep-sea drilling marine riser and preparation method thereof |
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| CN106244915B (en) * | 2016-08-30 | 2018-02-02 | 山东钢铁股份有限公司 | A kind of think gauge X80 pipe fitting steel pipes of excellent in low temperature toughness and preparation method thereof |
| CN107142427A (en) * | 2017-04-25 | 2017-09-08 | 中国石油天然气集团公司 | A kind of spiral forming X80 steel-grade marine riser supervisor and its manufacture method |
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Effective date of registration: 20181019 Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: Baoji Petroleum Steel Pipe Co., Ltd. Patentee after: China Petroleum and Natural Gas Group Co., Ltd. Address before: 721008 jiangtan Road, Baoji, Shaanxi 10 Patentee before: Baoji Petroleum Steel Pipe Co., Ltd. |