CN116145023A - High-strength high-toughness high-extrusion-resistance sleeve and processing method thereof - Google Patents
High-strength high-toughness high-extrusion-resistance sleeve and processing method thereof Download PDFInfo
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- 238000003672 processing method Methods 0.000 title abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 35
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- 238000000034 method Methods 0.000 claims abstract description 28
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 238000009749 continuous casting Methods 0.000 claims abstract description 16
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 13
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- 230000008569 process Effects 0.000 claims abstract description 12
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- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 11
- 238000009628 steelmaking Methods 0.000 claims abstract description 11
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- 238000009659 non-destructive testing Methods 0.000 claims abstract description 8
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- 239000012535 impurity Substances 0.000 claims abstract description 7
- RMLPZKRPSQVRAB-UHFFFAOYSA-N tris(3-methylphenyl) phosphate Chemical compound CC1=CC=CC(OP(=O)(OC=2C=C(C)C=CC=2)OC=2C=C(C)C=CC=2)=C1 RMLPZKRPSQVRAB-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 38
- 238000005496 tempering Methods 0.000 claims description 24
- 238000012545 processing Methods 0.000 claims description 21
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- 239000000126 substance Substances 0.000 claims description 4
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- 239000008186 active pharmaceutical agent Substances 0.000 claims description 3
- 229910052785 arsenic Inorganic materials 0.000 claims description 3
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- 238000007689 inspection Methods 0.000 claims description 3
- 239000006247 magnetic powder Substances 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 30
- 238000011161 development Methods 0.000 abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003208 petroleum Substances 0.000 abstract description 6
- 239000003345 natural gas Substances 0.000 abstract description 3
- 239000003209 petroleum derivative Substances 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 42
- 239000010959 steel Substances 0.000 description 42
- 238000013461 design Methods 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 239000011651 chromium Substances 0.000 description 11
- 239000011572 manganese Substances 0.000 description 11
- 239000010955 niobium Substances 0.000 description 10
- 239000003921 oil Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 6
- 239000011733 molybdenum Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000002500 effect on skin Effects 0.000 description 3
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- 229910001562 pearlite Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
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- 229910052710 silicon Inorganic materials 0.000 description 3
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- 239000006104 solid solution Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
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- 238000005098 hot rolling Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
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- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
-
- 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
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
-
- 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
- C22C38/44—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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
-
- 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
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
The invention relates to the technical field of petroleum and natural gas pipes, in particular to a high-strength high-toughness high-extrusion-resistance sleeve and a processing method thereof. The high-strength high-toughness high-extrusion-resistance sleeve comprises the following chemical element components in percentage by weight: 0.15 to 0.30 percent of C, si:0.15 to 0.45 percent of Mn:0.80 to 1.50 percent of Cr:0.20 to 0.80 percent of Mo:0.16 to 0.30 percent of Ni:0.12 to 0.30 percent of Nb:0.03 to 0.06 percent, V:0.04 to 0.16 percent, less than or equal to 0.04 percent of Ti, and B:0.0008 to 0.0020 percent, S is less than or equal to 0.002 percent, P is less than or equal to 0.012 percent, and the balance is Fe and unavoidable impurities. The invention makes the tensile strength of the manufactured petroleum casing pipe be equal to or more than 960MPa, the yield strength of 1130MPa be equal to or more than 885MPa, the elongation of the petroleum casing pipe be equal to or more than 18%, the full-size transverse impact energy of 0 ℃ be equal to or more than 100J, the full-size longitudinal impact energy of 0 ℃ be equal to or more than 130J, the external compression damage resistance of the petroleum casing pipe be equal to or more than 189.4MPa, and the development requirements of oil and gas fields such as deep wells, ultra-deep wells, shale gas and the like are met through the processes of steelmaking, continuous casting of slabs, controlled rolling and controlled cooling TMCP, HFW welding, weld joint heat treatment, thermal tension reducing, heat treatment, nondestructive testing, thread machining and the like.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas pipes, in particular to a high-strength high-toughness high-extrusion-resistance sleeve and a processing method thereof.
Background
Along with the gradual exhaustion of easily-extracted oil gas resources, the oil gas resource extraction is continuously advanced to deep and complex working conditions, and the extraction of unconventional oil gas resources such as shale gas, shale oil and the like is continuously increased. Compared with conventional natural gas, the shale gas mainly exists in dark shale or high-carbon shale, exists in natural cracks and pores of mudstone, high-elastic mudstone and the like in an adsorption or free state, and the proportion of the free gas is generally 20-85 percent. The shale gas reserves which are detected globally account for nearly 50% of unconventional gas resources, the shale gas resources in China are abundant, the development stage is in the primary stage, the Fuling, weiyuan, changning and Weirong 4 integrally-packed shale gas fields are detected in Sichuan basin, the geological reserves are detected to break through trillion cubic meters by the accumulated and newly-increased shale gas, and the shale gas productivity reaches 100 hundred million cubic meters at present. The reservoir of shale gas reservoir is generally characterized by low pore and low permeability, and is usually small in permeability and has a porosity of only 4% -5% at most, and the reservoir can be mined only by hydraulic fracture. At present, the shale gas exploitation mostly adopts a horizontal well multistage staged perforation fracturing yield increasing technology, and the exploitation technology provides higher requirements on the strength, toughness, internal pressure resistance and external pressure resistance of the casing. The method has incomplete data statistics, and the production casing deformation, shrinkage, dislocation, crushing and other damage of different degrees occur in the exploitation of the Sichuan shale gas well, so that the exploitation of shale gas and the safe service life of a shaft in China are severely restricted.
The data study shows that: the high strength can ensure that the sleeve resists the influence of the non-uniform load of the stratum, the high toughness can improve the brittle fracture resistance of the sleeve, and the brittle fracture caused by low toughness of the sleeve is reduced, and the prior petroleum sleeve product fails due to deformation, shrinkage, dislocation, crushing and the like of the sleeve caused by the strength and toughness. The patent CN104057253A discloses a high-strength oil layer sleeve suitable for shale gas horizontal wells and a manufacturing method thereof, wherein the mechanical property of the oil layer sleeve is 900-1030 MPa, the tensile strength is more than or equal to 950MPa, the elongation is more than or equal to 13%, the impact toughness is more than or equal to 60J in the transverse full-size, more than or equal to 80J in the longitudinal full-size, and the collapse resistance of a pipe body is more than or equal to 142.4MPa; the patent CN 109023120A discloses a high-strength high-toughness welding sleeve for shale gas wells and a manufacturing method thereof, and discloses the high-strength high-toughness welding sleeve for shale gas wells and the manufacturing method thereof, wherein the mechanical property of the sleeve is that the yield strength is more than or equal to 896MPa, the tensile strength is more than or equal to 1000MPa, the elongation is more than or equal to 18%, the transverse impact energy of a full-size parent metal at 0 ℃ is more than or equal to 116J, the impact energy of a welding seam is more than or equal to 100J, and the collapse resistance is more than or equal to 156.7MPa. Although the strength and toughness of the existing shale gas casing are improved, the collapse resistance is generally 160MPa, and for deep shale gas wells for carrying out volume fracturing, the strength and toughness of the casing, especially the external crush resistance, are required to be improved.
Disclosure of Invention
Aiming at the problems, the invention aims to provide the high-strength high-toughness high-extrusion-resistance sleeve and the processing method thereof, and the processed sleeve can realize high toughness and high extrusion-resistance strength of the sleeve pipe material while guaranteeing the strength, effectively improve the comprehensive mechanical property of the sleeve, reduce the sleeve loss rate and prolong the safety service life of an oil-gas well shaft.
The technical scheme of the invention is as follows: the high-strength high-toughness high-extrusion-resistance sleeve comprises the following chemical element components in percentage by weight: 0.15 to 0.30 percent of C, si:0.15 to 0.45 percent of Mn:0.80 to 1.50 percent of Cr:0.20 to 0.80 percent of Mo:0.16 to 0.30 percent of Ni:0.12 to 0.30 percent of Nb:0.03 to 0.06 percent, V:0.04 to 0.16 percent, less than or equal to 0.04 percent of Ti, and B:0.0008 to 0.0020 percent, S is less than or equal to 0.002 percent, P is less than or equal to 0.012 percent, and the balance is Fe and unavoidable impurities.
The chemical components of the high-strength high-toughness high-extrusion-resistance sleeve are selected according to the following steps:
design range of carbon (C): 0.15 to 0.30 percent, which is caused by: carbon can be dissolved in the sleeve steel to form an interstitial solid solution, which plays a role in solid solution strengthening. As the content of C in the steel increases, the hardenability of the steel is increased, and the tensile strength is further improved; however, when the C content in the sleeve steel is high, banded tissue segregation can occur, the weld quality of high-frequency welding is directly affected, after quenching and tempering heat treatment, high-carbon martensite is more, the toughness is low, cracks are easy to occur, so that the reasonable C content is selected, and the C content in the sleeve steel is reduced as much as possible under the condition of meeting the application strength requirement, so that the design range of the carbon (C) is as follows: 0.15 to 0.30 percent.
Design range of silicon (Si): 0.15 to 0.45 percent, which is caused by: silicon does not form carbide, has strong graphitization promoting effect on carbon, but is soluble in austenite, has the effect of improving hardenability and tempering resistance in quenched and tempered steel, mainly improves the strength of steel in a solid solution strengthening form, and is also used as a deoxidizing element in steel. However, the excessively high content can significantly reduce the plasticity and toughness of the sleeve steel, so that the design range of the silicon (Si) of the invention is: 0.15 to 0.45 percent.
Design range of manganese (Mn): 0.80 to 1.50 percent, which is caused by: the addition of manganese can improve the strength and hardness of ferrite and austenite of the sleeve steel, is beneficial to reducing the martensite transformation temperature Ms, is beneficial to refining the pearlite effect, improves the hardenability and improves the mechanical property of the quenched and tempered sorbite steel. However, the increase of the manganese content can increase the banded structure in the sleeve steel, so that the heat conductivity of the sleeve steel is reduced, the internal stress is large during quenching, and cracks are easy to occur. The design range of the manganese (Mn) of the present invention is therefore: 0.80 to 1.50 percent.
Design range of chromium (Cr): 0.20 to 0.80 percent, which is caused by: chromium can slow down the austenitic decomposition speed, obviously improves the hardenability of the sleeve steel, forms various carbides with carbon, forms intermetallic compound sigma phase (FeCr) with iron, if sigma phase is separated out, the impact toughness is rapidly reduced; during high-temperature tempering, the sleeve steel has good high-temperature oxidation resistance, and the heat resistance of the sleeve steel is enhanced. Therefore, in order to meet the requirements of high-strength high-toughness bushings, the addition amount of Cr should be strictly controlled, so the design range of the chromium (Cr) of the invention is as follows: 0.20 to 0.80 percent.
Design range of molybdenum (Mo): 0.16 to 0.30 percent, which is caused by: molybdenum is an important element for improving hardenability and heat resistance, and the hardenability is stronger than that of chromium, and is inferior to that of manganese, so that tempering resistance and tempering stability can be improved. Molybdenum is beneficial to improving the toughness and the elongation of the sleeve steel, the recrystallization temperature can be improved by the molybdenum, the aggregation of cementite at 450-600 ℃ is effectively inhibited, the precipitation of special carbide is promoted, and the heat resistance of the steel is improved. If the molybdenum content is too high, oxidation resistance of the sleeve steel is deteriorated. The design range of molybdenum (Mo) according to the invention is therefore: 0.16 to 0.30 percent.
Design range of nickel (Ni): 0.12 to 0.30 percent, which is caused by: nickel strengthens ferrite and refines pearlite in the sleeve steel, improves the strength of the sleeve steel, improves the fatigue resistance of the sleeve steel and reduces the sensitivity of the steel to notch. The design range of the nickel (Ni) of the invention is therefore: 0.12 to 0.30 percent.
Design range of niobium (Nb): 0.03 to 0.06 percent, which is caused by: niobium has refined grains, reduces overheat sensitivity of the sleeve steel, can improve welding performance of the sleeve steel, improves hydrogen and nitrogen corrosion resistance at high temperature and intergranular corrosion resistance, but the excessive niobium content can reduce plasticity and toughness of the sleeve steel. The design range of niobium (Nb) of the present invention is therefore: 0.03 to 0.06 percent.
Design range of vanadium (V): 0.04 to 0.16 percent, which is caused by: vanadium has extremely strong affinity with carbon, nitrogen and oxygen, mainly exists in the form of carbide or nitride and oxide in steel, and mainly influences the structure and the performance of the steel by forming carbonitride, so that the steel has the advantages of refining structure grains and improving the strength and the toughness of the sleeve steel. The design range of the vanadium (V) of the invention is therefore: 0.04 to 0.16 percent.
Design range of titanium (Ti): ti is less than or equal to 0.04%, which is beneficial to improving the welding performance of the sleeve steel, ensuring that the structure in the sleeve steel is compact, refining grains and reducing ageing sensitivity and cold brittleness. The design scope of the titanium (Ti) of the invention is therefore: ti is less than or equal to 0.04 percent.
Design range of boron (B): 0.0008-0.0020%, boron can delay the formation of pearlite and ferrite, promote the formation of martensite during rapid quenching, improve the compactness and hot rolling performance of sleeve steel tissue, improve high-temperature strength and strengthen the grain boundary effect, so the design range of the boron (B) disclosed by the invention is as follows: 0.0008 to 0.0020 percent.
Design range of sulfur (S): s is less than or equal to 0.002 percent, which is caused by the following reasons: sulfur is seriously segregated in the sleeve steel, is a harmful element, deteriorates the quality of the sleeve steel, exists in the sleeve steel as FeS with low melting point, and is easy to form SO in the welding process 2 So that the weld joint has pores and looseness, and the sulfur content in the steel should be reduced as much as possible, therefore, the design range of the sulfur (S) is as follows: s is less than or equal to 0.002 percent.
Design range of phosphorus (P): p is less than or equal to 0.012 percent, which is caused by: phosphorus is a harmful element in the sleeve steel, and excessive content can deteriorate the welding performance of the sleeve steel and the cold bending performance of the sleeve steel. Therefore, the phosphorus content in the steel should be reduced as much as possible, so the design range of phosphorus (P) of the invention is: p is less than or equal to 0.012 percent.
The processing method of the high-strength high-toughness high-extrusion-resistance sleeve comprises the following steps of:
s1: steelmaking: melting steelmaking raw materials into molten iron, wherein the chemical components of the molten iron comprise 0.15-0.30% of C and 0.30% of Si in percentage by weight: 0.15 to 0.45 percent of Mn:0.80 to 1.50 percent of Cr:0.20 to 0.80 percent of Mo:0.16 to 0.30 percent of Ni:0.12 to 0.30 percent of Nb:0.03 to 0.06 percent, V:0.04 to 0.16 percent, less than or equal to 0.04 percent of Ti, and B: 0.0008-0.0020%, S less than or equal to 0.002%, P less than or equal to 0.012%, and the balance of Fe and unavoidable impurities, wherein molten iron is subjected to pretreatment, external refining, desulfurization treatment and calcium treatment, and then is subjected to continuous casting procedures to obtain a continuous casting slab;
s2: rolling a coiled plate; heating the continuous casting slab obtained in the step S1 at 1180-1260 ℃, and rolling into a hot rolled plate by adopting a laminar cooling water mist (TMCP) process;
s3: and (3) pipe manufacturing: performing longitudinal shearing, nondestructive testing, edge milling, FFX forming, high-frequency straight seam resistance welding, namely HFW welding, removing burrs inside and outside a welding seam, performing ultrasonic nondestructive testing on the welding seam, and performing welding seam deformation sizing treatment on the coiled plate obtained in the step S2 to prepare a straight seam resistance welded pipe with the required specification and size;
s4: and (3) heat treatment: heating the straight welded resistance pipe manufactured in the step S3 to 970-1150 ℃ by adopting an intermediate frequency induction heating mode, fully austenitizing the straight welded resistance pipe, reducing the straight welded resistance pipe into a pipe blank with a required specification by using a thermal tension reducing device, quenching by using the waste heat of the thermal tension reducing pipe blank, tempering the quenched pipe blank, carrying out hot sizing after tempering, and carrying out hot rotary straightening;
s5: nondestructive flaw detection: performing online full-tube ultrasonic and magnetic powder nondestructive inspection detection on the tube blank subjected to tempering heat treatment in the step S4;
s6: and (3) thread processing: and (3) processing the pipe end API threads or special airtight threads of the pipe blank qualified in the step (S5) to finally obtain the high-strength high-toughness high-extrusion-resistance sleeve.
The sum of the weight percentages of the five elements As, sn, pb, sb, bi contained in the molten iron in the S1 steelmaking process is less than or equal to 0.060 percent, and the weight percentage of the S element contained in the molten iron is less than or equal to 0.002 percent.
And the superheat degree of the continuous casting process in the step S1 is less than 25 ℃.
The wall thickness tolerance of the hot rolled coiled plate in the S2 is-0.10 mm to +0.15mm, the final rolling temperature is 850-920 ℃, the coiling temperature is controlled to be 650-750 ℃, and the yield strength of the coiled plate is less than or equal to 520MPa.
And (3) performing deformation sizing treatment on the welding seam in the step (S3), wherein the online medium-frequency heating temperature of the welding seam is 850-950 ℃.
And (4) controlling the temperature of the waste heat of the hot tension reducing tube blank in the S4 to 880-950 ℃.
The S4: the tempering temperature of the tempering heat treatment is as follows: preserving the temperature for 60 to 120 minutes at 580 to 680 ℃.
The S4 hot rotation straightening temperature is more than or equal to 450 ℃.
The tensile strength of the sleeve is greater than or equal to 960MPa, the yield strength of the sleeve is greater than or equal to 1130MPa, the elongation is greater than or equal to 885MPa, the full-size transverse impact energy at 0 ℃ is greater than or equal to 100J, the full-size longitudinal impact energy at 0 ℃ is greater than or equal to 130J, and the external compression resistance is greater than or equal to 189.4MPa.
The rolling control and cooling control TMCP adopted in the invention is named Thermo Mechanical Control Process, and Chinese is translated into a thermo-mechanical control process, namely, the technology of air cooling or cooling control is performed on the basis of controlling the heating temperature, the rolling temperature and the rolling reduction in the hot rolling process. The FFX forming adopted in the invention is fully named flexible forming excellent, is developed after a reasonable forming theory is established by carrying out scientific system analysis on a straight welded pipe forming process and various roller and row roller forming technologies in the later 90 s of the 20 th century in Nakata, china, and integrates many advantages of the traditional roller forming and row roller forming. The invention adopts HFW welding, which is called High Frequency Welding, and the Chinese language is translated into high-frequency welding, the principle is that the skin effect and the proximity effect are generated by utilizing high-frequency current through a metal conductor, the energy of the high-frequency current is concentrated on the surface of a workpiece by utilizing the skin effect, the position and the range of a high-frequency current flowing route are controlled by utilizing the proximity effect, and the adjacent steel plate edges can be heated and melted in a short time due to the rapid current speed, and the butt joint is realized by extrusion. The medium frequency induction heating adopted in the invention has the principle that: the workpiece is placed in an inductor, typically a hollow copper tube that receives an intermediate or high frequency alternating current of 300-300000Hz or more. The alternating magnetic field is generated to generate induction current with the same frequency in the workpiece, the induction current is unevenly distributed on the workpiece, the induction current is strong on the surface and weak in the inner part, the core is close to 0, the surface of the workpiece can be rapidly heated by utilizing the skin effect, the surface temperature rises to 800-1000 ℃ within a few seconds, and the temperature of the core rises very little.
The invention has the beneficial effects that:
1. according to the invention, through the processes of steelmaking, continuous casting of slabs, controlled rolling and controlled cooling TMCP, HFW welding, weld heat treatment, thermal tension reducing, heat treatment, nondestructive testing, thread processing and the like, the tensile strength of the manufactured petroleum casing pipe is more than or equal to 960MPa, the yield strength of the petroleum casing pipe is more than or equal to 1130MPa, the elongation is more than or equal to 885MPa, the full-size transverse impact energy at 0 ℃ is more than or equal to 100J, the full-size longitudinal impact energy at 0 ℃ is more than or equal to 130J, the external extrusion resistance is more than or equal to 189.4MPa, and the requirements of shale gas development on the extrusion resistance of the casing pipe are met; 2. the invention uses the waste heat 880-950 ℃ of the thermal tension reducing tube blank to carry out quenching treatment, reduces the tube blank from being heated to austenitizing temperature again for quenching, greatly reduces energy consumption and improves efficiency; 3. the invention carries out tempering heat treatment on the quenched tube blank, and then carries out hot sizing and hot rotating straightening, thus being capable of effectively controlling the low residual stress of the tube blank, improving the geometric dimension of the tube blank, the uneven wall thickness of the tube blank is less than or equal to 3.5 percent, the roundness of the outer diameter of the tube blank is less than or equal to 0.45 percent, and realizing the production of the tube blank with high dimensional accuracy.
Detailed Description
The invention is described in further detail below with reference to examples:
example 1
The technical scheme of the invention is as follows: the high-strength high-toughness high-extrusion-resistance sleeve comprises the following chemical element components in percentage by weight: 0.15 to 0.30 percent of C, si:0.15 to 0.45 percent of Mn:0.80 to 1.50 percent of Cr:0.20 to 0.80 percent of Mo:0.16 to 0.30 percent of Ni:0.12 to 0.30 percent of Nb:0.03 to 0.06 percent, V:0.04 to 0.16 percent, less than or equal to 0.04 percent of Ti, and B:0.0008 to 0.0020 percent, S is less than or equal to 0.002 percent, P is less than or equal to 0.012 percent, and the balance is Fe and unavoidable impurities.
Example 2
A processing method of a high-strength high-toughness high-extrusion-resistance sleeve comprises the following steps:
s1: steelmaking: melting steelmaking raw materials into molten iron, wherein the chemical components of the molten iron comprise 0.15-0.30% of C and 0.30% of Si in percentage by weight: 0.15 to 0.45 percent of Mn:0.80 to 1.50 percent of Cr:0.20 to 0.80 percent of Mo:0.16 to 0.30 percent of Ni:0.12 to 0.30 percent of Nb:0.03 to 0.06 percent, V:0.04 to 0.16 percent, less than or equal to 0.04 percent of Ti, and B: 0.0008-0.0020%, S less than or equal to 0.002%, P less than or equal to 0.012%, and the balance of Fe and unavoidable impurities, wherein molten iron is subjected to pretreatment, external refining, desulfurization treatment and calcium treatment, and then is subjected to continuous casting procedures to obtain a continuous casting slab;
s2: rolling a coiled plate; heating the continuous casting slab obtained in the step S1 at 1180-1260 ℃ and then rolling the continuous casting slab into a hot rolled coil by adopting a controlled rolling and cooling TMCP process;
s3: and (3) pipe manufacturing: performing longitudinal shearing, nondestructive testing, edge milling, FFX forming, HFW welding, removing burrs inside and outside a welding line, performing ultrasonic nondestructive testing on the welding line, and performing welding line deformation sizing treatment on the coiled plate obtained in the step S2 to prepare a straight welded resistance welded pipe with the required specification and size;
s4: and (3) heat treatment: heating the straight seam resistance welded pipe manufactured in the step S3 to 970-1150 ℃ by adopting an intermediate frequency induction heating mode, fully austenitizing the straight seam resistance welded pipe, reducing the straight seam resistance welded pipe into a pipe blank with required specification by using thermal tension reducing equipment, quenching the pipe blank by using waste heat of the thermal tension reducing pipe blank, tempering the quenched pipe blank, carrying out heat sizing after tempering, carrying out heat rotation straightening, reducing the pipe blank from room temperature to austenitizing temperature again for quenching, greatly reducing energy consumption and improving efficiency;
s5: nondestructive flaw detection: performing online full-tube ultrasonic and magnetic powder nondestructive inspection detection on the tube blank subjected to tempering heat treatment in the step S4;
s6: and (3) thread processing: and (3) processing the pipe end API threads or special airtight threads of the pipe blank qualified in the step (S5) to finally obtain the high-strength high-toughness high-extrusion-resistance sleeve.
The sum of the weight percentages of the five elements As, sn, pb, sb, bi contained in the molten iron in the S1 steelmaking process is less than or equal to 0.060 percent, and the weight percentage of the S element contained in the molten iron is less than or equal to 0.002 percent.
The superheat degree of the continuous casting process in the step S1 is less than 25 ℃ so as to reduce the center segregation degree of the slab.
The wall thickness tolerance of the hot rolled coiled plate in the S2 is-0.10 mm to +0.15mm, the final rolling temperature is 850-920 ℃, the coiling temperature is controlled to be 650-750 ℃, and the yield strength of the coiled plate is less than or equal to 520MPa. The final rolling temperature is 850-920 ℃, the coiling temperature is controlled at 650-750 ℃, and the low-strength coiled plate can be realized, so that the yield strength of the coiled plate is less than or equal to 520MPa, and the preparation is made for the stable forming of the HFW welding of the subsequent coiled plate.
And (3) performing deformation sizing treatment on the welding seam in the step (S3), wherein the online medium-frequency heating temperature of the welding seam is 850-950 ℃.
And (4) controlling the temperature of the waste heat of the hot tension reducing tube blank in the S4 to 880-950 ℃.
The S4: the tempering temperature of the tempering heat treatment is as follows: preserving the temperature for 60 to 120 minutes at 580 to 680 ℃.
The S4 hot rotation straightening temperature is more than or equal to 450 ℃.
The invention carries out tempering heat treatment on the quenched tube blank, wherein the tempering temperature is as follows: and (3) preserving heat for 60-120 min at 580-680 ℃, tempering, carrying out hot sizing after discharging, and carrying out hot rotary straightening at a temperature of more than or equal to 450 ℃, so that the low residual stress of the tube blank is effectively controlled, and the production of the tube blank with high dimensional accuracy is realized.
The tensile strength of the sleeve is greater than or equal to 960MPa, the yield strength of the sleeve is greater than or equal to 1130MPa, the elongation is greater than or equal to 885MPa, the full-size transverse impact energy at 0 ℃ is greater than or equal to 100J, the full-size longitudinal impact energy at 0 ℃ is greater than or equal to 130J, and the external compression resistance is greater than or equal to 189.4MPa. The invention can manufacture 125ksi and 140ksi steel-grade anti-extrusion sleeve products meeting the Q/SY 1394 standard requirements, and is suitable for the development requirements of oil and gas fields such as deep wells, ultra-deep wells, shale gas and the like.
According to the method for processing the high-strength, high-toughness and high-extrusion-resistance sleeve according to the embodiment 1, the high-strength, high-toughness and high-extrusion-resistance sleeve is processed by adopting the method for processing the high-strength, high-toughness and high-extrusion-resistance sleeve according to the embodiment 2, and the specific cases are as described in the embodiment 3, the embodiment 4, the embodiment 5 and the embodiment 6, and the comparative examples are comparative examples 1, 2, 3 and 4.
The chemical element compositions of the sleeves in examples 3-6 and comparative examples 1-4 are shown in the weight percentage of Table 1.
Table 1 examples 3 to 6, and comparative examples 1 to 4 wherein the chemical element components of the bushings were represented by weight percent (wt%)
The processing parameters of the bushings in examples 3-6 and comparative examples 1-4 are shown in Table 2.
Table 2 processing parameters of the bushings in examples 3-6 and comparative examples 1-4
The results of the mechanical properties of the bushings in examples 3-6 and comparative examples 1-4 are shown in Table 3.
Table 3 mechanical Property results of the bushings in examples 3-6 and comparative examples 1-4
In combination with tables 1 and 2, the weight percentage (wt%) of certain chemical elements in the sleeves of comparative examples 1-4 are out of the range of the technical scheme of the invention, for example, in comparative example 1, the weight percentage of Mn element is lower than that in the tube of the invention; some processing parameters of the sleeve in the comparative examples 1-4 are beyond the range related to the technical scheme of the invention, for example, the online heating temperature of the welding line in the comparative example 2 is lower than that of the welding line in the technical scheme of the invention; from Table 3, it can be seen that at least one of the performance indexes of the bushings in comparative examples 1 to 4 is lower than the standard design requirement, for example: the yield strength in comparative example 1 does not meet the standard design requirement, the external collapse resistance is lower than the standard requirement, the elongation in comparative example 2 does not meet the standard design requirement, and the full-size transverse impact energy at 0 ℃ is lower than the standard requirement, so that the performance of the sleeve in comparative examples 1-4 is not suitable for the development requirements of oil and gas fields with complex working conditions such as deep wells, ultra-deep wells, shale gas and the like.
As can be seen from Table 3, compared with comparative examples 1-4, the high-strength high-toughness high-extrusion-resistance sleeve in examples 3-6 has tensile strength of more than or equal to 960MPa, yield strength of more than or equal to 1130MPa, elongation of more than or equal to 18%, full-size transverse impact energy of more than or equal to 100J at 0 ℃, full-size longitudinal impact energy of more than or equal to 130J at 0 ℃ and extrusion-resistance strength of more than or equal to 189.4MPa, so that the sleeve in examples 3-6 has higher strength, high toughness and excellent extrusion-resistance performance, especially extrusion-resistance strength far higher than 160MPa, and extrusion-resistance performance far superior to that of the existing similar products, and the invention can meet the requirements of oil development of complex working conditions such as deep wells, ultra-deep wells, shale gas fields and the like on the extrusion-resistance performance of the sleeve.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a high-strength high toughness high anti extrusion sleeve pipe which characterized in that: the sleeve comprises the following chemical element components in percentage by weight: 0.15 to 0.30 percent of C, si:0.15 to 0.45 percent of Mn:0.80 to 1.50 percent of Cr:0.20 to 0.80 percent of Mo:0.16 to 0.30 percent of Ni:0.12 to 0.30 percent of Nb:0.03 to 0.06 percent, V:0.04 to 0.16 percent, less than or equal to 0.04 percent of Ti, and B:0.0008 to 0.0020 percent, S is less than or equal to 0.002 percent, P is less than or equal to 0.012 percent, and the balance is Fe and unavoidable impurities.
2. A method of processing the high strength, high toughness, high extrusion resistant sleeve of claim 1, wherein: the method comprises the following steps:
s1: steelmaking: melting steelmaking raw materials into molten iron, wherein the chemical components of the molten iron comprise 0.15-0.30% of C and 0.30% of Si in percentage by weight: 0.15 to 0.45 percent of Mn:0.80 to 1.50 percent of Cr:0.20 to 0.80 percent of Mo:0.16 to 0.30 percent of Ni:0.12 to 0.30 percent of Nb:0.03 to 0.06 percent, V:0.04 to 0.16 percent, less than or equal to 0.04 percent of Ti, and B: 0.0008-0.0020%, S less than or equal to 0.002%, P less than or equal to 0.012%, and the balance of Fe and unavoidable impurities, wherein molten iron is subjected to pretreatment, external refining, desulfurization treatment and calcium treatment, and then is subjected to continuous casting procedures to obtain a continuous casting slab;
s2: rolling a coiled plate; heating the continuous casting slab obtained in the step S1 at 1180-1260 ℃ and then rolling the continuous casting slab into a hot rolled coil by adopting a controlled rolling and cooling TMCP process;
s3: and (3) pipe manufacturing: performing longitudinal shearing, nondestructive testing, edge milling, FFX forming, HFW welding, removing burrs inside and outside a welding line, performing ultrasonic nondestructive testing on the welding line, and performing welding line deformation sizing treatment on the coiled plate obtained in the step S2 to prepare a straight welded resistance welded pipe with the required specification and size;
s4: and (3) heat treatment: heating the straight welded resistance pipe manufactured in the step S3 to 970-1150 ℃ by adopting an intermediate frequency induction heating mode, fully austenitizing the straight welded resistance pipe, reducing the straight welded resistance pipe into a pipe blank with a required specification by using a thermal tension reducing device, quenching by using the waste heat of the thermal tension reducing pipe blank, tempering the quenched pipe blank, carrying out hot sizing after tempering, and carrying out hot rotary straightening;
s5: nondestructive flaw detection: performing online full-tube ultrasonic and magnetic powder nondestructive inspection detection on the tube blank subjected to tempering heat treatment in the step S4;
s6: and (3) thread processing: and (3) processing the pipe end API threads or special airtight threads of the pipe blank qualified in the step (S5) to finally obtain the high-strength high-toughness high-extrusion-resistance sleeve.
3. The method for processing the high-strength high-toughness high-extrusion-resistance sleeve according to claim 2, which is characterized in that: the sum of the weight percentages of the five elements As, sn, pb, sb, bi contained in the molten iron in the S1 steelmaking process is less than or equal to 0.060 percent, and the weight percentage of the S element contained in the molten iron is less than or equal to 0.002 percent.
4. The method for processing the high-strength high-toughness high-extrusion-resistance sleeve according to claim 2, which is characterized in that: and the superheat degree of the continuous casting process in the step S1 is less than 25 ℃.
5. The method for processing the high-strength high-toughness high-extrusion-resistance sleeve according to claim 2, which is characterized in that: the wall thickness tolerance of the hot rolled coiled plate in the S2 is-0.10 mm to +0.15mm, the final rolling temperature is 850-920 ℃, the coiling temperature is controlled to be 650-750 ℃, and the yield strength of the coiled plate is less than or equal to 520MPa.
6. The method for processing the high-strength high-toughness high-extrusion-resistance sleeve according to claim 2, which is characterized in that: and (3) performing deformation sizing treatment on the welding seam in the step (S3), wherein the online medium-frequency heating temperature of the welding seam is 850-950 ℃.
7. The method for processing the high-strength high-toughness high-extrusion-resistance sleeve according to claim 2, which is characterized in that: and (4) controlling the temperature of the waste heat of the hot tension reducing tube blank in the S4 to 880-950 ℃.
8. The method for processing the high-strength high-toughness high-extrusion-resistance sleeve according to claim 2, which is characterized in that: the S4: the tempering temperature of the tempering heat treatment is as follows: preserving the temperature for 60 to 120 minutes at 580 to 680 ℃.
9. The method for processing the high-strength high-toughness high-extrusion-resistance sleeve according to claim 2, which is characterized in that: the S4 hot rotation straightening temperature is more than or equal to 450 ℃.
10. The method for processing the high-strength high-toughness high-extrusion-resistance sleeve according to claim 2, which is characterized in that: the tensile strength of the sleeve is greater than or equal to 960MPa, the yield strength of the sleeve is greater than or equal to 1130MPa, the elongation is greater than or equal to 885MPa, the full-size transverse impact energy at 0 ℃ is greater than or equal to 100J, the full-size longitudinal impact energy at 0 ℃ is greater than or equal to 130J, and the external compression resistance is greater than or equal to 189.4MPa.
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| CN116677325A (en) * | 2023-06-09 | 2023-09-01 | 延安嘉盛石油机械有限责任公司 | Extrusion-resistant sleeve and preparation method thereof |
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