CN116875885A - 一种590MPa级抗氢致开裂石油套管用卷板及制造方法 - Google Patents
一种590MPa级抗氢致开裂石油套管用卷板及制造方法 Download PDFInfo
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- 239000003208 petroleum Substances 0.000 title claims abstract description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 21
- 239000001257 hydrogen Substances 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000005336 cracking Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 53
- 239000010959 steel Substances 0.000 claims abstract description 53
- 238000005096 rolling process Methods 0.000 claims abstract description 21
- 238000007670 refining Methods 0.000 claims abstract description 14
- 229910052796 boron Inorganic materials 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 5
- 238000009749 continuous casting Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 18
- 229910001563 bainite Inorganic materials 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 9
- 229910000859 α-Fe Inorganic materials 0.000 claims description 8
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 238000006477 desulfuration reaction Methods 0.000 claims description 4
- 230000023556 desulfurization Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 230000000930 thermomechanical effect Effects 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 17
- 238000005260 corrosion Methods 0.000 abstract description 17
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- 230000002349 favourable effect Effects 0.000 abstract description 9
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- 229910052719 titanium Inorganic materials 0.000 abstract description 5
- 239000003973 paint Substances 0.000 abstract description 4
- 239000003129 oil well Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 14
- 238000003466 welding Methods 0.000 description 14
- 229910052799 carbon Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- 239000011777 magnesium Substances 0.000 description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 10
- 239000000956 alloy Substances 0.000 description 10
- 229910052749 magnesium Inorganic materials 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910001566 austenite Inorganic materials 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- 239000010955 niobium Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 229910004696 Ti—Cu—Ni Inorganic materials 0.000 description 4
- 230000002411 adverse Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 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 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid 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
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 150000004763 sulfides Chemical class 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 101150090128 PCM1 gene Proteins 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
- 238000005275 alloying Methods 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- 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
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- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
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- 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
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
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- 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
- C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
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- 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
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- 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
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
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- C—CHEMISTRY; METALLURGY
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- 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
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- 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
- C21D8/0226—Hot rolling
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- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
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- 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
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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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
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- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
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- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
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- B21B2015/0057—Coiling the rolled product
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- 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
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- C21D2211/002—Bainite
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- 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
- C21D2211/00—Microstructure comprising significant phases
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- 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
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Abstract
本发明涉及石油套管生产技术领域,尤其涉及一种590MPa级抗氢致开裂石油套管用卷板及制造方法。其化学成分按重量百分比为:C:0.03%‑0.06%,Si:0.15%‑0.30%,Mn:1.00%‑1.30%,P:≤0.015%,S:≤0.004%,Ti:0.07%‑0.10%,Nb:0.05%‑0.08%,Mg:0.002%‑0.004%,B:0.0008%‑0.002%,Cu:0.10%‑0.30%,Ni:0.10%‑0.30%,Al:0.02%‑0.06%,N:≤0.008%,其余为Fe和不可避免元素。本发明粗轧终轧温度1030‑1060℃,精轧开轧温度980‑1030℃,终轧温度860‑900℃,该温度范围有利于Nb、Ti析出,细化晶粒尺寸,提高强度和韧性。轧后钢带以12‑16℃/s的速度进行冷却,明显提高强度,同时提高韧性和耐腐蚀性能。材料的强度高,低温韧性更好,抗HIC性能优异,可防止油井管的脆断,具有更高的安全性。
Description
技术领域
本发明涉及石油套管生产技术领域,尤其涉及一种590MPa级抗氢致开裂石油套管用卷板及制造方法。
背景技术
石油套管是用于支撑油、气井井壁的钢管,以保证钻井过程进行和完井后整个油井的正常运行,是油气田钻采作业中必不可少的施工材料。HFW(高频焊接)套管与无缝管相比,具有壁厚均匀、尺寸精度高、射孔性能好、抗挤毁能力强、成本低等显著优势,正在逐渐替代传统的无缝钢管。
世界能源需求的日益增长,石油天然气产量逐年增加,石油套管的腐蚀与防护问题也逐渐成为人们普遍关注的重点。石油套管的氢腐蚀已成为油气田面临的主要腐蚀类型,已给油田造成了巨大的经济损失,不但造成停工停产、增加维修费用,而且污染环境,甚至危及生命,开发出具有良好耐腐蚀性的石油套管具有重大社会和经济意义。
抗拉强度为590MPa级别,属于API Spec 5CT规定的M65钢级。API Spec 5CT规定:M65级别屈服强度在448-586MPa之间,抗拉强度≥586MPa,伸长率≥22%;0℃时横向夏比冲击功≥20J,抗HIC性能按照NACE TM0284规定采用A溶液进行试验,满足CSR≤2%,CLR≤15%,CTR≤5%。因为M65直缝焊油套管要求进行电阻焊,所以要求良好的焊接性能,冷裂纹敏感系数Pcm尽可能低;为了保证抗冲击和挤压,需要具有一定的冲击韧性;为了保证抗HIC性能,需要控制夹杂物和组织细小、均匀性程度;为保证强度,需要添加一定合金细化晶粒和提供淬透性。。
综上所述,既要保证抗拉强度为590MPa级别的HFW/ERW(高韧性电阻焊)石油套管用卷板的-20℃冲击功大于150J,Pcm低于0.15%焊接性良好;同时材料的强度高,低温韧性更好,抗HIC性能优异,可防止油井管的脆断,具有更高的安全性,成为本领域丞待解决的技术问题。
发明内容
为了克服现有技术的不足,本发明提供一种590MPa级抗氢致开裂石油套管用卷板及其制造方法,材料的强度高,低温韧性更好,抗HIC性能优异,可防止油井管的脆断,具有更高的安全性。
为了达到上述目的,本发明采用以下技术方案实现:
一种590MPa级抗氢致开裂石油套管用卷板,API SPEC 5CT中钢级为M65,适用于正火态,且-20℃冲击功大于150J,为Pcm低于0.15焊接性良好的高韧性电阻焊(简称HFW/ERW)用卷板。
其化学成分按重量百分比为:C:0.03%-0.06%,Si:0.15%-0.30%,Mn:1.00%-1.30%,P:≤0.015%,S:≤0.004%,Ti:0.07%-0.10%,Nb:0.05%-0.08%,Mg:0.002%-0.004%,B:0.0008%-0.002%,Cu:0.10%-0.30%,Ni:0.10%-0.30%,Al:0.02%-0.06%,N:≤0.008%,其余为Fe和不可避免元素。
一种590MPa级抗氢致开裂石油套管用卷板的制造方法,具体包括如下步骤:
1)冶炼:
铁水预处理,转炉冶炼-经顶吹或顶底复合吹炼,炉外精炼、LF炉轻脱硫处理及进行钙处理以控制夹杂物形态和提高钢的延展性、韧性和冷弯性能。
2)连铸:
板坯连铸制成连铸坯,连铸采用电磁搅拌或动态轻压下,以提高连铸板坯的质量。
3)轧制:
连铸板坯经加热炉加热至1200-1280℃,随后采用热机械轧制。
粗轧终轧温度1030-1060℃,精轧开轧温度980-1030℃,终轧温度860-900℃,该温度范围有利于Nb、Ti析出,细化晶粒尺寸,提高强度和韧性。
4)冷却:
轧后钢带以12-16℃/s的速度进行冷却。该冷却速度下,促进贝氏体生成,对细化铁素体和贝氏体有利,减少制管时包申格效应造成的屈服强度下降,还可以减轻带状组织到0.5级以下,明显提高强度,同时提高韧性和耐腐蚀性能。
5)卷取:
冷却后进行卷取,卷取温度620~660℃。该温度范围有利于贝氏体组织均匀和细化,避免产生组织不均匀对抗HIC性能产生不利影响。
卷板的最终组织为铁素体-贝氏体,铁素体体积分数比例低于8%;A/B/C/D类夹杂物级别1.0级以下,各类和值级别1.5级以下,带状组织0.5级以下。
卷板的抗拉强度为590MPa级别,API SPEC 5CT中钢级为M65,且-20℃冲击功大于150J,Pcm低于0.15。
与现有技术相比,本发明至少具有如下技术效果或优点:
1、本发明采用低碳含镁的Nb-Ti-Cu-Ni复合设计,在保证强度的前提下降低碳含量,进而提高焊接性、塑性和冲击韧性。添加适量镁,镁有强化学活性,与氧、硫有很强的亲和力,是有效精炼剂,可降低钢中氧、硫含量和夹杂物数量,纯净钢液,还能对钢中夹杂物起到明显的变性作用,改善钢的性能。添加适量Nb,铌是细晶和析出强化元素,可弥补因碳降低而引起的强度的下降,改善冲击性能;在加热和热轧阶段起到一定的阻止晶粒长大作用,从而细化淬火后晶粒,保证冲击韧性,使钢具有更高强度和高韧性。Cu可提高淬透性,还可借助沉淀强化来提高钢的抗拉强度,同时具有改善耐腐蚀性能的作用,特别是铜能在钢表面形成钝化膜,减少了氢的侵入,提高耐硫化氢腐蚀的能力。Ni促进贝氏体生成,使韧性和塑性有所改善,解决Cu脆开裂问题,同时具有一定耐酸性,对抗HIC性能有利。
采用低碳含镁的Nb-Ti-Cu-Ni复合设计,材料的强度高,低温韧性更好,抗HIC性能优异。
2、本发明Mg:0.002%~0.004%,微量镁可改变硫化物、碳化物、碳氮化物的数量,种类,尺寸,分布。镁处理的夹杂物是混合相,其核心是含镁氧化物,该结构细小弥散分布在钢中,形成符合夹杂物,可有效改变夹杂物形态和大小,改善钢材性能和抗腐蚀性能,对HIC性能和冲击有利。
3、本发明用B替代贵重合金元素,降低合金成本。0.002%的硼相当于0.6%锰、0.7%铬、0.5%钼和1.5%镍,故可添加少量硼达到替代贵重合金元素的作用。
4、本发明Pcm低于0.15%,焊接性良好。现有的M65普遍采用C含量0.20%以上,Mn含量1.0%以上,Pcm接近0.25%。Pcm值大于0.25时,冷裂倾向明显增大,可焊性降低。Pcm越低焊接性越好,本发明低于0.15%,焊接性优良。
5、本发明炉外精炼、LF炉轻脱硫处理及进行钙处理以控制夹杂物形态和提高钢的延展性、韧性和冷弯性能,板坯连铸制成连铸板坯-连铸采用电磁搅拌或动态轻压下、以提高连铸板坯的质量。
6、本发明粗轧终轧温度1030-1060℃,精轧开轧温度980-1030℃,终轧温度860-900℃,该温度范围有利于Nb、Ti析出,细化晶粒尺寸,提高强度和韧性。
7、本发明轧后钢带以12-16℃/s的速度进行冷却,该冷却速度下,促进贝氏体生成,对细化铁素体和贝氏体有利,减少制管时包申格效应造成的屈服强度下降,还可以减轻带状组织到0.5级以下,明显提高强度,同时提高韧性和耐腐蚀性能。
8、卷取温度620~660℃,该温度范围有利于贝氏体组织均匀和细化,避免产生组织不均匀对抗HIC性能产生不利影响。
具体实施方式
本发明公开了一种590MPa级抗氢致开裂石油套管用卷板及制造方法。本领域技术人员可以借鉴本文内容,适当改进工艺参数实现。特别需要指出的是,所有类似的替换和改动对本领域技术人员来说是显而易见的,它们都被视为包括在本发明。本发明的方法及应用已经通过较佳实施例进行了描述,相关人员明显能在不脱离本发明内容、精神和范围内对本文所述的方法和应用进行改动或适当变更与组合,来实现和应用本发明技术。
一种590MPa级抗氢致开裂石油套管用卷板,卷板的抗拉强度为590MPa级别,APISPEC 5CT中钢级为M65,且-20℃冲击功大于150J,为Pcm低于0.15%焊接性良好的HFW/ERW(高韧性电阻焊)石油套管用卷板。
其化学成分按重量百分比为:
其化学成分按重量百分比为:C:0.03%-0.06%,Si:0.15%-0.30%,Mn:1.00%-1.30%,P:≤0.015%,S:≤0.004%,Ti:0.07%-0.10%,Nb:0.05%-0.08%,Mg:0.002%-0.004%,B:0.0008%-0.002%,Cu:0.10%-0.30%,Ni:0.10%-0.30%,Al:0.02%-0.06%,N:≤0.008%,其余为Fe和不可避免元素。
与现有技术相比,本方案采用低碳含镁的Nb-Ti-Cu-Ni复合设计,材料的强度高,低温韧性更好,抗HIC性能优异;Mg细化夹杂物,可有效改变夹杂物形态和大小,对HIC性能和冲击有利;Ni和Cu有效提高强度,且提高抗HIC性能;Pcm低于0.15%,焊接性良好。
以下详细阐述本发明各合金成分作用机理,其中百分符号%代表重量百分比:
C:为碳化物形成元素,是保证强度的最有效元素,可以提高淬透性,保证材料强度和硬度。只有保证足够的碳,才会形成足够的富碳残余奥氏体并能够稳定至室温,最终形成少量均匀细小的M/A组织。如碳含量过低,无法保证材料的硬度,导致车丝性能差。含量过高,将影响产品的焊接性、塑性和冲击韧性,其最佳范围是0.03%-0.06%。
Si:可以溶入铁素体和奥氏体中,起到一定的固溶强化作用,可显著提高钢的硬度和强度,并提高疲劳强度和疲劳比,但含量过高会显著降低钢的塑性和韧性,其最佳范围是0.15%-0.30%。
Mn:锰具有固溶强化作用,还能增加奥氏体稳定性,对提高淬透性也有利,有效保证钢的强度。锰和铁形成人固溶体,提高钢中铁素体和奥氏体硬度和强度,同时又是碳化物形成元素,进入渗碳体取代一部分铁原子,锰在钢中由于降低临界转变温度;可使C曲线右移,促进贝氏体转化。但锰含量过大,可增加连铸坯的中心偏析倾向,会使钢板中带状组织增多,最终钢板中会含有一定量的带状组织,使钢板的脆性增加,塑性降低,抗腐蚀性能变差。同时,形成易于形成MnS,对抗HIC性能影响恶劣,其最佳范围是1.00%-1.30%。
P、S、N:是钢中不可避免的杂质元素,希望越低越好,但要求过低会增加生产成本,本发明的P≤0.015%、S≤0.004%、N≤0.006%。
Ti:钛是强的固氮元素,加入0.015%左右Ti时,可在板坯连铸时形成高温稳定细小的TiN析出相,这种细小的TiN析出相可有效阻止连铸坯在加热过程中奥氏体晶粒的长大,同时对改善钢焊接时热影响区的韧性有明显作用。更多的Ti含量,可获得较多的TiC粒子,通过应变诱导析出和相变析出提高钢的强度。同时,析出的TiC产生较强的沉淀强化作用可以保证钢管后续正火热处理晶粒不明显长大,从而保证了整管热处理后的强度满足M65性能要求。但含量过高则合金成本偏高。其最佳范围是0.07%-0.10%
Nb:铌是细晶和析出强化元素,可弥补因碳降低而引起的强度的下降,改善冲击性能;在加热和热轧阶段起到一定的阻止晶粒长大作用,从而细化淬火后晶粒,保证冲击韧性,使钢具有更高强度和高韧性;但过高会增加合金成本,合适的范围是0.05%-0.08%。
Mg:镁有强化学活性,与氧、硫有很强的亲和力,是有效精炼剂,可降低钢中氧、硫含量和夹杂物数量,纯净钢液,还能对钢中夹杂物起到明显的变性作用,改善钢的性能。微量镁可改变硫化物、碳化物、碳氮化物的数量,种类,尺寸,分布。镁处理的夹杂物是混合相,其核心是含镁氧化物,该结构细小弥散分布在钢中,形成符合夹杂物,改善钢材性能和抗腐蚀性能。合适的范围是0.002%-0.004%。
B:硼能够显著提高淬透性并改善韧性。硼提高淬透性的能力很强,0.002%的硼相当于0.6%锰、0.7%铬、0.5%钼和1.5%镍,故可添加少量硼达到替代贵重合金元素的作用。硼含量过高过低,会影响其淬透性。合适的范围是0.0008%-0.002%。
Cu:铜可提高淬透性,在热轧和淬火热处理中提高钢的强度。铜还可借助沉淀强化来提高钢的抗拉强度,同时具有改善耐腐蚀性能的作用,特别是铜能在钢表面形成钝化膜,减少了氢的侵入,提高耐硫化氢腐蚀的能力。而且,铜的少量加入焊接性没有不利影响。但铜含量高时,在热变形加工时导致铜脆现象。其最佳范围是0.10%-0.30%。
Ni:镍和铁能无限固溶,镍扩大铁的奥氏体区,是形成和稳定奥氏体的主要合金元素。降低临界转变温度,降低钢中各元素的扩散速率,提高淬透性。降低共析珠光体的碳含量,其作用仅次于氮而强于锰,间接促进贝氏体生成。含镍钢的碳含量可适当降低,因而可使韧性和塑性有所改善。提高钢的疲劳性能,减小钢对缺口的敏感性。镍可以解决添加Cu产生的铜脆裂纹问题。同时具有一定耐酸性,对抗HIC性能有利。合适的范围是0.10%-0.30%
Als:铝是常用的脱氧剂,在钢中加入少量的铝,可细化晶粒,提高冲击韧性,本发明的Als含量为0.02%-0.05%。
一种590MPa级抗氢致开裂石油套管用卷板的制造方法,包括铁水预处理、钢水冶炼、炉外精炼和板坯连铸、连铸坯再加热、轧制、冷却、卷取。
1)冶炼连铸工艺:
铁水预处理,转炉冶炼-经顶吹或顶底复合吹炼,炉外精炼、LF炉轻脱硫处理及进行钙处理以控制夹杂物形态和提高钢的延展性、韧性和冷弯性能。
板坯连铸制成连铸板坯-连铸采用电磁搅拌或动态轻压下、以提高连铸板坯的质量。
2)轧制、冷却工艺:
连铸板坯经加热炉加热至1200-1280℃,随后采用热机械轧制。
粗轧终轧温度1030-1060℃,精轧开轧温度980-1030℃,终轧温度860-900℃,该温度范围有利于Nb、Ti析出,细化晶粒尺寸,提高强度和韧性。
轧后钢带以12-16℃/s的速度进行冷却,该冷却速度下,促进贝氏体生成,对细化铁素体和贝氏体有利,减少制管时包申格效应造成的屈服强度下降,还可以减轻带状组织到0.5级以下,明显提高强度,同时提高韧性和耐腐蚀性能。
冷却后进行卷取,卷取温度620-660℃,该温度范围有利于贝氏体组织均匀和细化,避免产生组织不均匀对抗HIC性能产生不利影响。
卷板的最终组织为铁素体-贝氏体,铁素体体积分数比例低于8%;Pcm低于0.15%,A/B/C/D类夹杂物级别1.0级以下,各类和值级别1.5级以下,带状组织0.5级以下。
【实施例】
一种590MPa级抗氢致开裂石油套管用卷板及制造方法,具体实施方式如下:
其中表1为实施例卷板的化学成分;表2为实施例加热、轧制、冷却工艺参数;表3为实施例力学性能检测结果。
表1实施例化学成分(wt%)
实施例 | C | Si | Mn | P | S | Ti | Nb | Mg | B | Cu | Ni | Al | N | Pcm |
1 | 0.04 | 0.18 | 1.30 | 0.011 | 0.002 | 0.10 | 0.05 | 0.002 | 0.001 | 0.10 | 0.10 | 0.03 | 0.004 | 0.12 |
2 | 0.06 | 0.20 | 1.00 | 0.010 | 0.004 | 0.07 | 0.06 | 0.003 | 0.0008 | 0.14 | 0.14 | 0.05 | 0.003 | 0.13 |
3 | 0.05 | 0.24 | 1.20 | 0.009 | 0.003 | 0.08 | 0.07 | 0.002 | 0.002 | 0.18 | 0.18 | 0.06 | 0.004 | 0.14 |
4 | 0.06 | 0.15 | 1.10 | 0.011 | 0.002 | 0.07 | 0.08 | 0.003 | 0.002 | 0.23 | 0.23 | 0.02 | 0.006 | 0.15 |
5 | 0.03 | 0.30 | 1.15 | 0.010 | 0.002 | 0.08 | 0.06 | 0.003 | 0.001 | 0.25 | 0.25 | 0.04 | 0.005 | 0.12 |
6 | 0.05 | 0.19 | 1.25 | 0.009 | 0.003 | 0.09 | 0.05 | 0.002 | 0.0009 | 0.28 | 0.28 | 0.03 | 0.006 | 0.14 |
7 | 0.06 | 0.18 | 1.13 | 0.013 | 0.001 | 0.08 | 0.06 | 0.002 | 0.002 | 0.30 | 0.30 | 0.02 | 0.005 | 0.15 |
8 | 0.05 | 0.25 | 1.07 | 0.008 | 0.004 | 0.07 | 0.07 | 0.003 | 0.001 | 0.12 | 0.12 | 0.03 | 0.007 | 0.12 |
表2加热、轧制、冷却工艺参数
表3力学和耐腐蚀性能表
由表1-3可见,采用本发明的成分设计和轧制、卷取工艺,生产出的590MPa级抗H2S腐蚀油套管用卷板,满足API SPEC 5CT标准M65级力学性能和耐腐蚀性能的要求。
本发明采用低碳含镁的Nb-Ti-Cu-Ni复合设计,材料的强度高,低温韧性更好,抗HIC性能优异;Mg细化夹杂物,可有效改变夹杂物形态和大小,对HIC性能和冲击有利;B替代贵重合金元素,降低合金成本;Pcm低于0.15%,焊接性良好。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (7)
1.一种590MPa级抗氢致开裂石油套管用卷板,其特征在于,其化学成分按重量百分比为:
C:0.03%-0.06%,Si:0.15%-0.30%,Mn:1.00%-1.30%,P:≤0.015%,S:≤0.004%,Ti:0.07%-0.10%,Nb:0.05%-0.08%,Mg:0.002%-0.004%,B:0.0008%-0.002%,Cu:0.10%-0.30%,Ni:0.10%-0.30%,Al:0.02%-0.06%,N:≤0.008%,其余为Fe和不可避免元素。
2.一种如权利要求1所述590MPa级抗氢致开裂石油套管用卷板的制造方法,其特征在于,具体包括如下步骤:
1)冶炼:
炉外精炼、LF炉轻脱硫处理及进行钙处理;
2)连铸:
板坯连铸制成连铸坯,连铸采用电磁搅拌或动态轻压下;
3)轧制:
连铸板坯加热至1200-1280℃,随后轧制,
粗轧终轧温度1030-1060℃,精轧开轧温度980-1030℃,终轧温度860-900℃;
4)冷却:
轧后钢带以12-16℃/s的速度进行冷却;
5)卷取:
冷却后进行卷取,卷取温度620~660℃。
3.根据权利要求2所述的一种590MPa级抗氢致开裂石油套管用卷板的制造方法,其特征在于,
所述1)转炉冶炼经顶吹或顶底复合吹炼。
4.根据权利要求2所述的一种590MPa级抗氢致开裂石油套管用卷板的制造方法,其特征在于,
所述2)连铸板坯经加热炉加热至1200-1280℃。
5.根据权利要求2所述的一种590MPa级抗氢致开裂石油套管用卷板的制造方法,其特征在于,
所述3)采用热机械轧制。
6.根据权利要求2所述的一种590MPa级抗氢致开裂石油套管用卷板的制造方法,其特征在于,卷板的最终组织为铁素体-贝氏体,铁素体体积分数比例低于8%;Pcm低于0.20%,A/B/C/D类夹杂物级别1.0级以下,各类和值级别1.5级以下,带状组织0.5级以下。
7.根据权利要求6所述的一种590MPa级抗氢致开裂石油套管用卷板的制造方法,其特征在于,卷板的抗拉强度为590MPa级别,API SPEC 5CT中钢级为M65,且-20℃冲击功大于150J,Pcm低于0.15。
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