CN105779897B - M65-grade resistance welding petroleum casing pipe and manufacturing method thereof - Google Patents
M65-grade resistance welding petroleum casing pipe and manufacturing method thereof Download PDFInfo
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- 238000003466 welding Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000003208 petroleum Substances 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000005496 tempering Methods 0.000 claims abstract description 15
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract 2
- 238000009749 continuous casting Methods 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 238000010791 quenching Methods 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 241001062472 Stokellia anisodon Species 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000011572 manganese Substances 0.000 description 13
- 239000011651 chromium Substances 0.000 description 10
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
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Abstract
The invention discloses an M65-grade resistance welding petroleum casing pipe and a manufacturing method thereof, wherein the chemical components are as follows according to the weight percentage: c: 0.13% -0.17%, Si: 0.15% -0.30%, Mn: 0.80% -1.20%, P: less than or equal to 0.020%, S: less than or equal to 0.008 percent, Cr: 0.30% -0.40%, Ti: 0.010% -0.030%, Als: 0.02% -0.05%, N: less than or equal to 0.008 percent, and the balance of Fe and inevitable impurity elements. The process is characterized in that: heating a plate blank to 1150-; the whole tube is heated to the temperature of 520 ℃ and 620 ℃, the temperature is kept for 60-80min, and the water cooling tempering is carried out, so that the invention has the advantages and effects that: the steel belt has good impact toughness; the weldability is good, and the efficiency is high; the consistency of the performance of the pipe body and the welding line is ensured; the tempering temperature of the heat treatment of the pipe body is low, and the energy is saved.
Description
Technical field
The invention belongs to oil casing pipe steel technical field, it is related to a kind of ERW (ERW, Electric Resistance
Weld, electric resistance welding) sleeve pipe and its manufacture method, grade of steel is M65 petroleum casing pipes and its manufacture in more particularly to API SPEC 5CT
Method, its rolled steel band performance is J55, and the quenched rear performance of homogeneous tube is M65 grade of steels.
Background technology
Petroleum casing pipe is one of the most frequently used oil country tubular good in oil field, and consumption is big, spends many, is oil-gas field drill operation
In essential construction material, just reached 2,500,000 tons within only 2010.For seamless pipe, ERW sleeve pipes have wall thickness
Uniformly, dimensional accuracy is high, perforation property is good, Anti -collapse ability is strong, the low significant advantage of cost, and ERW sleeve pipes are by manufacturer
With the welcome of oil field user.Develop with high added value, different stage straight weld production string, improve the market competitiveness, it is right
Cost for oil production is saved, improving the oil exploitation level of China has profound significance.
API Spec 5CT are provided：The yield strength of M65 grades of steel pipes between 448-586MPa, tensile strength >=
586MPa, elongation >=22%；Transverse direction Charpy-V impact power >=20J, hardness HRC≤22 at 0 DEG C.
To realize high efficiency production, the lower slightly hot rolled strip of intensity can be gone out using hot continuous rolling, then carry out ERW welding
Tubulation, then homogeneous tube is heat-treated, the final performance of steel pipe is met M65 levels.And weld seam and body carry out identical
Technology for Heating Processing, obtained finally tissue is identical, effectively mitigates tissue, the performance difference of weld seam and body, eliminates residual stress,
Improve the overall quality of steel pipe.
Before making the present invention, existing indivedual documents or patent of invention about M65 grade of steel ERW petroleum casing pipes, but using low
The M65 level ERW petroleum casing pipes report of carbon low manganese design is seldom, simple below to introduce the document that is closer to the present invention and special
Profit：
1) Chinese patent CN101921952A, a kind of oil casing pipe steel, electric resistance welding petroleum sleeve pipe and its manufacture method.Into
Contain C in point：0.19%-0.29%, Mn：1.0%-1.4%；Homogeneous tube Tempering and Quenching, is tempered 650-690 DEG C.C contains in the patent
Amount is high, and carbon equivalent 0.4-0.5, On Impact Toughness and weldability are unfavorable；Temperature is high, and energy source consumption is big, and uncontrollable height
Warm temper brittleness.
2) C in paper " exploitation of K55 production technology characteristic and M65 ", composition：0.35%-0.36%, Si：0.23%-
0.30%, Mn：1.40%-1.43%, V：0.05%-0.06%, S：0.012%-0.014%, P：0.013%-0.015%.
The paper discloses seamless pipe M65, and using the high violent design of high-carbon, and carbon equivalent is more than 0.6, steel band weldability and impact flexibility
Difference, steel band can not butt welding end to end, can only monovolume production, low production efficiency.
In patent disclosed above or document, using the high violent design of high-carbon, the weldability and impact flexibility of steel band are bad.
Significantly different part is designed with containing chromium using low-carbon with the present invention.It is an object of the invention to provide a kind of M65 grades of electric resistance welding
Petroleum casing pipe and its manufacture method, are designed especially with low-carbon containing chromium, and weldability and impact are good, and rolled is J55, whole
Performance is M65 after pipe Tempering and Quenching vertical masonry joint electric resistance welding (ERW) petroleum casing pipe and its manufacture method.
The content of the invention
The present invention discloses a kind of M65 grades of electric resistance welding petroleum sleeve pipe and its manufacture method, to solve current vertical masonry joint electric resistance welding stone
The technical problem that tubing and casing M65 productions are present, for example：Carbon manganese content is high, weldability and poor impact toughness, crisp with high tempering
The problems such as property.
The technical scheme is that such, its chemical composition by weight percentage, is matched as follows：C：0.13%-
0.17%, Si：0.15%-0.30%, Mn：0.80%-1.20%, P：≤ 0.020%, S：≤ 0.008%, Cr：0.30%-
0.40%, Ti：0.010%-0.030%, Als：0.02%-0.05%, N：≤ 0.008%, remaining is Fe and inevitable miscellaneous
Prime element.
To ensure that steel band of the present invention has good impact flexibility；Welding between coil of strip is more beneficial for, production efficiency is improved；
Homogeneous tube carries out Tempering and Quenching, it is ensured that body is consistent with Weld Performance, and carbon equivalent of the present invention is limited to 0.39-0.45.
C：Compared with prior art, this programme C content is low, and carbon is carbide former, is the most effective of proof strength
Element, can improve stability after quenching degree and heat treatment, it is ensured that strength of materials when high temperature is tempered for a long time, therefore, carbon
Content is unsuitable too low；But carbon content is too high to influence the impact flexibility and welding performance of product, it is considered herein that to M65 oil sets
For tube steel, carbon control is more suitable in 0.13%-0.17%.
Si：Solution strengthening effect can be played, but its too high levels can make plasticity and the toughness reduction of steel, its optimum range
It is 0.15%-0.30%.
Mn：Manganese has solution strengthening effect, moreover it is possible to increase stabilization of austenite, also favourable to improving quenching degree, effectively protects
The intensity of card steel meets M65 requirements, while manganese is little to the Toughness of steel plate.But manganese content is excessive, continuous casting billet can be increased
Center segregation is inclined to.In the present invention, its optimum range is 0.80%-1.2%.
P：Phosphorus is harmful element in steel, increases the cold brittleness of steel, welding performance is degenerated, and reduces plasticity, makes cold-bending property
Degenerate, its content≤0.020% should be controlled.
S：Sulphur is harmful element in steel, steel is produced red brittleness, reduces the ductility and toughness of steel, deteriorates welding performance,
To ensure the high cleanliness of molten steel, its content≤0.008% should be controlled.
Cr：Chromium can improve intensity by solution strengthening and refined crystalline strengthening, make up because the reduction of C and Mn contents causes intensity
Decline.Cr is medium carbide former, in all various carbide, and chromium carbide is most tiny one kind, and it can be equal
It is distributed in evenly in steel body product, and hinders the movement of austenite grain boundary and growing up for austenite crystal, plays crystal grain thinning
Effect, so as to improve steel belt roof bolt fragility；Cr elements dissolve in after austenite the stability for increasing overcooling austenite, make C curve right
Move, improve the quenching degree of steel.But Cr too high levels can significantly improve the brittle transition temperature of steel, elongation is reduced, is improved simultaneously
Cost of alloy, the suitable scope of the present invention is 0.30%-0.40%.
Ti：Titanium is strong nitrogen killer, when adding 0.015% or so Ti, high-temperature stable can be formed in sheet billet continuous casting thin
Small TiN precipitated phases, this tiny TiN precipitated phases can effectively prevent the length of continuous casting billet austenite crystal in heating process
Greatly, while having obvious effect to the toughness for improving steel welding heat affected zone, favourable to mitigating temper brittleness, suitable scope is
0.010%-0.030%.
Als：Aluminium is conventional deoxidier, and a small amount of aluminium is added in steel, can crystal grain thinning, improve impact flexibility, properly
Scope be 0.02%-0.05%.
N：Solid solution nitrogen has the strong effect of pinning dislocation, has harmful effect to toughness, should control its content≤0.008%
To realize the object of the invention, the present invention, which takes, is produced by below technique, and it includes molten iron pretreatment, smelting molten steel, stove
Outer refining and sheet billet continuous casting, continuous casting billet are reheated, rolled, cooling down, batching, ERW tubulations and homogeneous tube are heat-treated.It is characterized in that：
1) continuous casting process is smelted：Molten iron is pre-processed, and converter smelting-through top blast or top bottom blowing, external refining, LF
Stove desulfurization process and ductility, toughness and the cold-bending property for carrying out Calcium treatment to control inclusion morphology and improve steel, slab connect
Casting is made continuous casting steel billet-continuous casting and uses electromagnetic agitation or dynamic soft-reduction, the quality to improve continuous casting steel billet.
2) rolling mill practice：The heated stove heat of continuous casting steel billet is rolled to 1150-1200 DEG C after through hot tandem, eventually
Temperature is rolled for 780-840 DEG C, rear steel band is rolled and is cooled down with 10-15 DEG C/s speed, and steel coil strip is carried out in 570-640 DEG C of temperature
Take.
3) steel band carries out high frequency/intermediate frequency electric resistance welding by ERW units and steel pipe is made.
4) homogeneous tube quenching-and-tempering process：After ERW tubulations, homogeneous tube is heated to 890-930 DEG C, is incubated 30-50min, water
Quench；Homogeneous tube is heated to 520-620 DEG C again, 60-80min is incubated, water cooling tempering effectively suppresses temper brittleness.
5) quenched rear homogeneous tube is organized as tempered sorbite, and yield strength is 515-550MPa, tensile strength is 620-
660MPa, -10 DEG C of transverse direction Charpy-V impact power (3 sample averages) Akv >=150J, hardness HRC≤22.
The advantage and effect of technical solution of the present invention are：1) the low manganese design of low-carbon, steel band impact flexibility is good；2) volume with
Weldability is good between volume, realizes that multireel is produced, efficiency high；3) homogeneous tube carries out Tempering and Quenching, it is ensured that body and Weld Performance
Uniformity；4) addition Ti alloy combination rapid cooling tempering, effectively reduction temper brittleness tendency, 5) temperature is low, saving
The energy.
Embodiment
Its chemical composition components by weight percentage of the invention is as follows：C：0.13%-0.17%, Si：0.15%-
0.30%, Mn：0.80%-1.20%, P：≤ 0.020%, S：≤ 0.008%, Cr：0.30%-0.40%, Ti：0.010%-
0.030%, Als：0.02%-0.05%, N：≤ 0.008%, remaining is Fe and inevitable element.
The present invention, which takes, is produced by below technique, it include molten iron pretreatment, smelting molten steel, external refining and sheet billet continuous casting,
Continuous casting billet is reheated, rolled, cooling down, batching, ERW tubulations and homogeneous tube are heat-treated, and concrete technology is as follows：
1) continuous casting process is smelted：Molten iron is pre-processed, and converter smelting-through top blast or top bottom blowing, external refining, LF
Stove desulfurization process and ductility, toughness and the cold-bending property for carrying out Calcium treatment to control inclusion morphology and improve steel, slab connect
Casting is made continuous casting steel billet-continuous casting and uses electromagnetic agitation or dynamic soft-reduction, the quality to improve continuous casting steel billet.
2) rolling mill practice：The heated stove heat of continuous casting steel billet is rolled to 1150-1200 DEG C after through hot tandem, eventually
Temperature is rolled for 780-840 DEG C, rear steel band is rolled and is cooled down with 10-15 DEG C/s speed, and steel coil strip is carried out in 570-640 DEG C of temperature
Take.
3) steel band carries out high frequency/intermediate frequency electric resistance welding by ERW units and steel pipe is made.
4) homogeneous tube quenching-and-tempering process：After ERW tubulations, homogeneous tube is heated to 890-930 DEG C, is incubated 30-50min, water
Quench；Homogeneous tube is heated to 520-620 DEG C again, 60-80min is incubated, water cooling tempering effectively suppresses temper brittleness.
5) quenched rear homogeneous tube is organized as tempered sorbite, and yield strength is 515-550MPa, tensile strength is 620-
660MPa, -10 DEG C of transverse direction Charpy-V impact power (3 sample averages) Akv >=150J, hardness HRC≤22.
Several most preferred embodiments of the present invention are described below, to illustrate the implementation result of the present invention.
Experiment steel chemical composition is shown in Table 1, and heating, rolling cooling technique are shown in Table 2, and Technology for Heating Processing is shown in Table 3, quenched and tempered state mechanics
Performance is shown in Table 4.
The chemical composition of table 1 (wt, %)
| Embodiment | C | Si | Mn | P | S | Cr | Ti | Als | N | Ceq |
| 1 | 0.13 | 0.21 | 1.17 | 0.012 | 0.002 | 0.35 | 0.012 | 0.034 | 0.0025 | 0.40 |
| 2 | 0.17 | 0.19 | 0.95 | 0.013 | 0.001 | 0.34 | 0.014 | 0.035 | 0.0030 | 0.40 |
| 3 | 0.17 | 0.25 | 0.84 | 0.010 | 0.004 | 0.39 | 0.021 | 0.022 | 0.0021 | 0.39 |
| 4 | 0.16 | 0.18 | 1.06 | 0.011 | 0.003 | 0.33 | 0.028 | 0.033 | 0.0034 | 0.40 |
| 5 | 0.15 | 0.22 | 1.14 | 0.011 | 0.002 | 0.36 | 0.015 | 0.028 | 0.0036 | 0.41 |
| 6 | 0.14 | 0.27 | 1.15 | 0.013 | 0.003 | 0.38 | 0.029 | 0.037 | 0.0025 | 0.41 |
Table 2 is heated, rolling mill practice and rolled mechanical property
The hardening and tempering process of table 3
The quenched and tempered state mechanical property of table 4
From table 4, using the composition design and rolling, homogeneous tube Technology for Heating Processing of the present invention, the quenched and tempered state produced is straight
Electric resistance welding petroleum sleeve pipe is stitched, requirement of the API SPEC 5CT standards to M65 grades of steel pipes is met.
Claims (2)
1. a kind of M65 grades of electric resistance welding petroleum sleeve pipe, it is characterised in that chemical composition by weight percentage, is matched as follows：C：
0.13%-0.14%, Si：0.15%-0.30%, Mn：0.80%-1.20%, P：≤ 0.020%, S：≤ 0.008%, Cr：0.30%-
0.40%, Ti：0.010%-0.030%, Als：0.02%-0.05%, N：≤ 0.008%, remaining is Fe and inevitable impurity element；
The production technology of sleeve pipe include molten iron pretreatment, smelting molten steel, external refining and sheet billet continuous casting, continuous casting billet reheat, roll, it is cold
But, batch, ERW tubulations and homogeneous tube are heat-treated, concretely comprise the following steps：
1）Smelt continuous casting process：Molten iron is pre-processed, and converter smelting-through top blast or top bottom blowing, external refining, LF stoves take off
Sulphuring treatment and progress Calcium treatment；
2）Rolling mill practice：The heated stove heat of continuous casting steel billet is rolled to 1150-1200 DEG C after through hot tandem, finish to gauge temperature
Spend for 780-840 DEG C, roll rear steel band and cooled down with 10-15 DEG C/s speed, steel strip coiling is carried out in 570-640 DEG C of temperature；
3）Steel band carries out high frequency/intermediate frequency electric resistance welding by ERW units and steel pipe is made；
4）Homogeneous tube quenching-and-tempering process：After ERW tubulations, homogeneous tube is heated to 890-930 DEG C, is incubated 30-50min, water quenching；Again
Homogeneous tube is heated to 520-620 DEG C, 60-80min, water cooling tempering is incubated；
5）Quenched rear homogeneous tube is organized as tempered sorbite, and yield strength is 515-550MPa, tensile strength is 620-
660MPa, -10 DEG C of horizontal Charpy-V impact power Akv >=150J, hardness HRC≤22.
2. a kind of M65 grades of electric resistance welding petroleum sleeve pipes according to claim 1, it is characterised in that carbon equivalent is 0.32-
0.45。
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| CN114686755A (en) * | 2020-12-31 | 2022-07-01 | 扬州龙川钢管有限公司 | Large-caliber high-strength seamless steel tube for BJ890 crane boom and intermediate frequency heat treatment method thereof |
| CN113416894B (en) * | 2021-05-25 | 2022-08-16 | 鞍钢股份有限公司 | M65-grade resistance welding petroleum casing pipe and manufacturing method thereof |
| CN115198186A (en) * | 2022-07-05 | 2022-10-18 | 鞍钢股份有限公司 | High-strength electric resistance welding petroleum casing for deep well and manufacturing method thereof |
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| CN101871081B (en) * | 2009-04-24 | 2012-05-30 | 宝山钢铁股份有限公司 | Steel for low-steel-grade continuous oil pipe and manufacturing method thereof |
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