CN110306103A - A kind of 555MPa grades of anti-H2S corrodes oil pipe steel band and preparation method thereof - Google Patents

A kind of 555MPa grades of anti-H2S corrodes oil pipe steel band and preparation method thereof Download PDF

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Publication number
CN110306103A
CN110306103A CN201910697095.XA CN201910697095A CN110306103A CN 110306103 A CN110306103 A CN 110306103A CN 201910697095 A CN201910697095 A CN 201910697095A CN 110306103 A CN110306103 A CN 110306103A
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preparation
steel band
oil pipe
555mpa
grades
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胡学文
朱涛
杨森
孙照阳
李忠义
余宣洵
张宇光
饶添荣
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Maanshan Iron and Steel Co Ltd
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Maanshan Iron and Steel Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/84—Controlled slow cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention discloses a kind of 555MPa grades of anti-H2S corrodes oil pipe steel band and preparation method thereof, chemical component including following weight percent: C:0.08~0.14%, Si:0.10~0.40%, Mn:0.70~1.20%, Nb:0.010~0.040%, Ti:0.010~0.050%, Mo:0.10~0.40%, Ni:0.10~0.30%, Cu:0.10~40%, Cr:0.30~0.80%, S≤0.0020%, P≤0.015%, remaining is Fe and inevitable impurity element, mechanical property: Rt0.5: 570~621MPa, Rm: 663~710MPa, A50: 24.0%~30.0%, the stable mechanical property of finished product, grain size is 12~13 grades, banded structure≤1.0 grade, and has good hic resistance and anti-SSCC performance.

Description

A kind of 555MPa grades of anti-H2S corrodes oil pipe steel band and preparation method thereof
Technical field
The invention belongs to oily tube steel technologies according to another a kind of, and in particular to 555MPa grades of anti-H2S corrode oil pipe steel band and Preparation method.
Background technique
The Service Environment of oil pipe, which is used for the service life, direct influence, with H in recent years2S acidity operating condition oil well increases, To with anti-H2The oil pipe demand of S corrosion also gradually increases.
Domestic anti-H2The oil pipe of S corrosion based on high-alloy seamless steel pipe, mainly have 13Cr series, super 13Cr series, Nickel-base alloy etc., the patent report about such tubing product is more, and these materials are mainly by addition a large amount of Cr, Ni etc. Alloying element reaches corrosion resistant purpose.For some strippers, using such oil well pipe, increase its cost of winning.Institute With the relatively low anti-H of development cost2S corrosion oil pipe and oily tube steel are of great significance.
The oily tube steel developed in the prior art is focused in the raising of steel obdurability more, rarely has for anti-H2S corrosion oil Therefore the exploitation of tube steel band it is less and with anti-H to carry out alloy content relatively at present2The oil pipe steel band of S corrosion Development and promote the use of all there is positive meaning to the development of tubing product and the promotion of oil gas field economic benefit.
Summary of the invention
The purpose of the present invention is to provide a kind of 555MPa grades of anti-H2S corrodes oil pipe steel band and preparation method thereof.Using The ingredient of the corrosion-resistant element such as Nb+Ti microalloying and Cr, Ni, Cu designs, and with extremely low sulfur content (0.0020% with Under) and phosphorus content (0.015% or less), under TMCP process system, adjustment controlled rolling and Controlled cooling process are obtained uniformly Ferrite+fine pearlite tissue, material is with 12~13 grades of the grain size, banded structure less than or equal to 1.0 grades, low Non-metallic inclusion makes it have and is greater than 20% higher than the yield strength of 555MPa or more, elongation percentage and has high resistant to hydrogen to cause (HIC) performance that cracks and anti-SSC performance.
The technical scheme adopted by the invention is as follows:
A kind of 555MPa grades of anti-H2S corrodes oil pipe steel band, the chemical component including following weight percent: C:0.08 ~0.14%, Si:0.10~0.40%, Mn:0.70~1.20%, Nb:0.010~0.040%, Ti:0.010~ 0.050%, Mo:0.10~0.40%, Ni:0.10~0.30%, Cu:0.10~40%, Cr:0.30~0.80%, S≤ 0.0020%, P≤0.015%, remaining is Fe and inevitable impurity element.
Further, it is preferable to be the chemical component for including following weight percent: C:0.09~0.12%, Si:0.14~ 0.28%, Mn:0.75~1.15%, Nb:0.015~0.038%, Ti:0.024~0.036%, Mo:0.19~0.33%, Ni:0.15~0.25%, Cu:0.20~0.30%, Cr:0.45~0.65%, S≤0.0020%, P≤0.012%, remaining For Fe and inevitable impurity element.
The 555MPa grades of anti-H2S corrode oil pipe steel band metallographic structure be uniformly tiny ferrite+tiny pearl Body of light, 12.0~13.0 grades of grain size, banded structure≤1.0 grade；Its Rt0.5: 570~621MPa, Rm: 663~710MPa, A50: 24.0%~30.0%；It is with good hic resistance and anti-SSCC performance.
The present invention also provides the anti-H of 555MPa grade2S corrodes the preparation method of oil pipe steel band, and feature exists, institute State preparation method the following steps are included: Deep Desulphurization of Hot Metal to S≤0.0050%, converter top bottom blowing, alloy fine tuning, LF furnace Refining, sheet billet continuous casting, slab slow cooling, slab reheating, hot continuous rolling, section cooling, is batched at the vacuum outgas of RH furnace.
In the sheet billet continuous casting step, whole process protection casting, continuous casting process uses slighter compress and electromagnetic agitation technique.
In the sheet billet continuous casting step, continuous casting billet with a thickness of 230mm.
In the slab slow cooling step, slab enters holding pit progress slow cooling 72 hours or more, preferably 72~84h, to reach To reduction center segregation of casting blank, center porosity and the purpose for avoiding slab crackle.
The slab reheats in step, and relation reheating temperature is 1200 DEG C~1250 DEG C, and soaking time is no less than 120 points Clock makes the full and uniform solid solution in austenite of micro alloying element carbonitride.
Further, the relation reheating temperature is preferably 1220 DEG C~1240 DEG C, and soaking time is preferably 124~ 138min。
In the hot continuous rolling step, using+7 rack finish rolling of 2 rack roughing, rough rolling step rolls in austenite recrystallization area System, is rolled back and forth using 2 rack four-high reversing mills, and rough rolling step rolling temperature is controlled at 1050 DEG C or more, is added up Reduction ratio >=80% carries out 3+5 passes in austenite recrystallization area, promotes austenite recrystallization softening crystal grain repeatedly；Essence The stage is rolled using 7 frame high CVC mills progress tandem rolling, which rolls in austenite Unhydrated cement, accumulative deflection >= 85%, by adding up large deformation, increases deformation band and dislocation density in deformed austeaite, it is brilliant to increase the refinement of phase transformation nucleation point Grain.
In the hot continuous rolling step, using the thermomechanical controlled rolling technique of TMCP, any rack is not allowed not apply change Shape amount sky mistake；The finish rolling finishing temperature is 840~880 DEG C, preferably 843~873 DEG C.
It carries out control cooling after finish rolling immediately, the section cooling and batches in step, with the cold of 50~70 DEG C/s But speed is quickly cooled to 550~630 DEG C and is batched, then is air-cooled to room temperature, and oiler temperature control is excellent at 550~630 DEG C 570~627 DEG C are selected as, to obtain ferrite and fine pearlite microscopic structure, 12.0~13.0 grades of grain size.
The present invention is to improve the anti-H of coiled sheet2S corrosive power takes following methods:
(1) using 1.2% Mn below and the design of the Nb+Ti microalloying ingredient not higher than 0.09%, crystal grain is refined, is changed The banded structure of kind material, promotes the corrosion resistance and welding performance of product；
(2) corrosion resistance of material is usually promoted using corrosion resisting alloys members such as addition a small amount of Cr, Mo, Ni and Cu；
(3) smelted by super clean reduces S, P content to greatest extent, reduce the crystal boundary segregation of manganese sulfide inclusion and phosphorus with into One step improves hic resistance and anti-SSC ability；
(4) by dynamic soft-reduction and the electromagnetic agitation of coming into operation simultaneously in continuous casting process, increase the consistency at slab center, subtract Few center segregation promotes the hic resistance of product, anti-SSC performance and welding performance to reach the Primary banding tissue for improving steel band Purpose.
(5) by increasing the speed of section cooling, inhibit C element in the structural long range diffusion of original band, to reach To eliminating and mitigating secondary banded structure, the hic resistance of product, the purpose of anti-SSC performance and welding performance are promoted.
Compared with prior art, corrosion-resistant oil pipe steel band and preparation method thereof of the invention has the advantages that
1. the mechanical property of steel band of the present invention: Rt0.5: 570~621MPa, Rm: 663~710MPa, A50: 24.0%~ 30.0%, the stable mechanical property of finished product, grain size is 12~13 grades, banded structure≤1.0 grade.
2. steel band of the present invention has good hic resistance and anti-SSCC performance.Steel band is resisted according to NACE TM 0284 HIC test, testing liquid are solution A (saturation+0.5% acetic acid+5%NaCl mixed solution of hydrogen sulfide), the crack length of material Rate, crack thickness rate and crack-sensitivity rate are 0；Steel band carries out SSCC test according to NACE TM 0177, and loading stress is 90% actual stress, sample be not cracked.
Detailed description of the invention
Fig. 1 is the anti-H of 555MPa grade in the embodiment of the present invention2The metallographic structure of S corrosion oil pipe steel band.
Specific embodiment
The following describes the present invention in detail with reference to examples.
According to chemical component provided by the invention requirement, station → LF is finely tuned using molten iron pretreatment → pneumatic steelmaking → alloy External refining → continuous casting process is smelted.After LF external refining, chemical component meets weight percent (wt%): C in steel: 0.08~0.14%, Si:0.10~0.40%, Mn:0.70~1.20%, Nb:0.020~0.040%, Ti:0.010~ 0.050%, Mo:0.10~0.40%, Ni:0.10~0.30%, Cu:0.10~40%, Cr:0.30~0.80%, S≤ 0.0020%, P≤0.015%, remaining is Fe and inevitable impurity element.Continuous casting overall process carries out protective casting, continuous casting The progress of base holding pit slow cooling 72 hours or more.
Various embodiments of the present invention and the chemical component of comparative example are as shown in table 1.Composition detection is according to 4336 " carbon of GB/T Steel and middle-low alloy steel spark source atomic emission spectrometry analysis method (conventional method) " it carries out.
The chemical component of 1 various embodiments of the present invention of table
Rolling process using slab reheating → high-pressure water descaling → 2 rack roughing → 7 rack finish rolling → section cooling → It batches, rough rolling step rolling temperature is controlled at 1050 DEG C or more, adds up reduction ratio >=80%, carries out 3+ in austenite recrystallization area 5 passes；The finish rolling stage carries out tandem rolling using 7 frame high CVC mills, which rolls in austenite Unhydrated cement, tires out Count deflection >=85%；Using the thermomechanical controlled rolling technique of TMCP, any rack is not allowed not apply deflection sky mistake.
Main rolling technological parameter and the mechanical property for testing steel are as shown in Table 2,3.Tensile property is tested according to GB/T 228.1-2010 " metal material stretching test part 1: room temperature test method " carries out.
2 rolling process main technologic parameters of table
3 mechanical property of table
The non-metallic inclusion of steel band of the present invention according to the A method in ASTM E45 " assessment method of steel inclusion " into Row, specific inspection result are as shown in table 4.
The non-metallic inclusion of the steel band of the present invention of table 4
Steel band of the invention has good hic resistance and anti-SSCC performance.Steel band is resisted according to NACE TM 0284 HIC test, testing liquid are solution A (saturation+0.5% acetic acid+5%NaCl mixed solution of hydrogen sulfide), the crack length of material Rate, crack thickness rate and crack-sensitivity rate are 0；Steel band carries out SSCC test according to NACE TM 0177, and loading stress is 90% actual stress, sample be not cracked.
In conclusion by embodiment rigidity obtained by steel grade Design of Chemical Composition range of the present invention and rolling mill practice control technology It can be as follows: Rt0.5: 570~621MPa, Rm: 663~710MPa, A50: 24.0%~30.0%, the stable mechanical property of finished product, Grain size is 12~13 grades, banded structure≤1.0 grade, while having good hic resistance and anti-SSCC performance.
Above-mentioned reference embodiment is to a kind of 555MPa grades of anti-H2S corrosion oil pipe is carried out detailed with steel band and preparation method thereof Description, is illustrative without being restrictive, several embodiments can be enumerated according to limited range, therefore do not departing from Change and modification under present general inventive concept should belong within protection scope of the present invention.

Claims (10)

1. a kind of 555MPa grades of anti-H2S corrodes oil pipe steel band, and feature exists, the chemical component including following weight percent: C: 0.08~0.14%, Si:0.10~0.40%, Mn:0.70~1.20%, Nb:0.010~0.040%, Ti:0.010~ 0.050%, Mo:0.10~0.40%, Ni:0.10~0.30%, Cu:0.10~40%, Cr:0.30~0.80%, S≤ 0.0020%, P≤0.015%, remaining is Fe and inevitable impurity element.
2. 555MPa grades of anti-H according to claim 12S corrodes oil pipe steel band, and feature exists, including following weight percent The chemical component of ratio: C:0.09~0.12%, Si:0.14~0.28%, Mn:0.75~1.15%, Nb:0.015~ 0.038%, Ti:0.024~0.036%, Mo:0.19~0.33%, Ni:0.15~0.25%, Cu:0.20~0.30%, Cr: 0.45~0.65%, S≤0.0020%, P≤0.012%, remaining is Fe and inevitable impurity element.
3. 555MPa grades of anti-H according to claim 1 or 22S corrodes oil pipe steel band, and feature exists, 555MPa grades described Anti- H2S corrode oil pipe steel band metallographic structure be uniformly tiny ferrite+tiny pearlite, grain size 12.0~13.0 Grade, banded structure≤1.0 grade；Its Rt0.5: 570~621MPa, Rm: 663~710MPa, A50: 24.0%~30.0%；It has Good hic resistance and anti-SSCC performance.
4. the anti-H of 555MPa grade according to claim 1 to 32S corrodes the preparation method of oil pipe steel band, special Sign is the preparation method comprises the following steps: Deep Desulphurization of Hot Metal to S≤0.0050%, converter top bottom blowing, alloy are micro- Tune, the vacuum outgas of RH furnace, sheet billet continuous casting, slab slow cooling, slab reheating, hot continuous rolling, section cooling, batches at the refining of LF furnace.
5. the preparation method according to claim 4, which is characterized in that in the sheet billet continuous casting step, whole process protection is poured Casting, continuous casting process use slighter compress and electromagnetic agitation technique.
6. the preparation method according to claim 4, which is characterized in that in the slab slow cooling step, slab enters holding pit Carry out slow cooling 72 hours or more.
7. the preparation method according to claim 4, which is characterized in that the slab reheats in step, relation reheating temperature It is 1200 DEG C~1250 DEG C, soaking time is no less than 120 minutes.
8. the preparation method according to claim 4, which is characterized in that in the hot continuous rolling step, using 2 rack roughing+7 Rack finish rolling, rough rolling step rolling temperature control at 1050 DEG C or more, add up reduction ratio >=80%, austenite recrystallization area into Row 3+5 passes；The finish rolling stage carries out tandem rolling using 7 frame high CVC mills, which rolls in austenite Unhydrated cement System adds up deflection >=85%.
9. the preparation method according to claim 4, which is characterized in that thermomechanical using TMCP in the hot continuous rolling step Controlled rolling technique does not allow any rack not apply deflection sky mistake；The finish rolling finishing temperature is 840~880 DEG C.
10. the preparation method according to claim 4, which is characterized in that it the section cooling and batches in step, with 50~ The cooling velocity of 70 DEG C/s is quickly cooled to 550~630 DEG C and is batched, then is air-cooled to room temperature, oiler temperature control 550~ 630℃。
CN201910697095.XA 2019-07-30 2019-07-30 A kind of 555MPa grades of anti-H2S corrodes oil pipe steel band and preparation method thereof Pending CN110306103A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111206189A (en) * 2020-03-06 2020-05-29 马鞍山钢铁股份有限公司 Hot-rolled pickled steel strip for 550 MPa-grade oil pipe and manufacturing method thereof
CN112522607A (en) * 2020-11-17 2021-03-19 马鞍山钢铁股份有限公司 Q125 steel grade SEW petroleum casing pipe and manufacturing method thereof
CN115341132A (en) * 2022-10-18 2022-11-15 江苏省沙钢钢铁研究院有限公司 Corrosion-resistant 460 MPa-grade steel plate and production method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106987782A (en) * 2017-03-17 2017-07-28 中国石油天然气集团公司 A kind of resistance to a small amount of CO2And H2The continuous pipe and its manufacture method of S corrosion
CN106995901A (en) * 2017-04-19 2017-08-01 马钢(集团)控股有限公司 A kind of oil pipeline steel band and preparation method thereof
CN109047693A (en) * 2018-08-23 2018-12-21 江阴兴澄特种钢铁有限公司 A kind of economical HIC resistance pipeline steel plate X52MS and its manufacturing method of TMCP delivery
CN110184530A (en) * 2018-07-14 2019-08-30 江阴兴澄特种钢铁有限公司 The pipe fitting used under low temperature and acid condition normalizing state steel plate and its manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106987782A (en) * 2017-03-17 2017-07-28 中国石油天然气集团公司 A kind of resistance to a small amount of CO2And H2The continuous pipe and its manufacture method of S corrosion
CN106995901A (en) * 2017-04-19 2017-08-01 马钢(集团)控股有限公司 A kind of oil pipeline steel band and preparation method thereof
CN110184530A (en) * 2018-07-14 2019-08-30 江阴兴澄特种钢铁有限公司 The pipe fitting used under low temperature and acid condition normalizing state steel plate and its manufacturing method
CN109047693A (en) * 2018-08-23 2018-12-21 江阴兴澄特种钢铁有限公司 A kind of economical HIC resistance pipeline steel plate X52MS and its manufacturing method of TMCP delivery

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CN111206189A (en) * 2020-03-06 2020-05-29 马鞍山钢铁股份有限公司 Hot-rolled pickled steel strip for 550 MPa-grade oil pipe and manufacturing method thereof
CN112522607A (en) * 2020-11-17 2021-03-19 马鞍山钢铁股份有限公司 Q125 steel grade SEW petroleum casing pipe and manufacturing method thereof
CN115341132A (en) * 2022-10-18 2022-11-15 江苏省沙钢钢铁研究院有限公司 Corrosion-resistant 460 MPa-grade steel plate and production method thereof
CN115341132B (en) * 2022-10-18 2023-02-28 江苏省沙钢钢铁研究院有限公司 Corrosion-resistant 460 MPa-grade steel plate and production method thereof

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Application publication date: 20191008