CN104419870A - X42 seamless line pipe with HIC (hydrogen induced cracking) resistance and manufacturing method thereof - Google Patents
X42 seamless line pipe with HIC (hydrogen induced cracking) resistance and manufacturing method thereof Download PDFInfo
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- CN104419870A CN104419870A CN201310398831.4A CN201310398831A CN104419870A CN 104419870 A CN104419870 A CN 104419870A CN 201310398831 A CN201310398831 A CN 201310398831A CN 104419870 A CN104419870 A CN 104419870A
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- pipe
- line pipe
- hic resistance
- seamless line
- temperature
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title description 8
- 229910052739 hydrogen Inorganic materials 0.000 title description 8
- 239000001257 hydrogen Substances 0.000 title description 7
- 238000005336 cracking Methods 0.000 title description 2
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 238000004513 sizing Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 8
- 238000007669 thermal treatment Methods 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 5
- 238000009749 continuous casting Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract description 2
- 238000012216 screening Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 30
- 239000010959 steel Substances 0.000 description 30
- 230000000052 comparative effect Effects 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009785 tube rolling Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention provides an X42 seamless line pipe with HIC resistance and a manufacturing method thereof, wherein the chemical components of the X42 seamless line pipe are specified as follows according to the weight percentage: 0.12 to 0.20%, Si: 0.2-0.4%, Mn: 1.0-1.6%, Ti: 0.01-0.04%, P: less than or equal to 0.015%, S: less than or equal to 0.010 percent, and the balance of iron and inevitable impurities. The method comprises the following steps: heating the tube blank obtained by continuous rolling to 1200-1300 ℃ through an annular furnace, continuously rolling by adopting MPM, controlling the tube-removing temperature to 1010-1030 ℃ and the sizing temperature to 820-850 ℃; normalizing, heating to 880-920 ℃ for normalizing, and keeping the temperature for 40-60 min. Through screening and proportioning of alloy elements, reasonable process and normalizing heat treatment, the HIC resistance is improved, the grain structure is uniform, the impact toughness is good, the manufacturing process is easy to realize, and the uniformity and the stability of the performance are good.
Description
Technical field
The invention belongs to corrosion resistant material and weldless steel tube field, particularly relate to the X42 seamless line pipe and manufacture method thereof with Properties of HIC resistance.
Background technology
Hydrogen sulfide (H
2s) be one of the hazardous medium of most corrosive nature in oil and natural gas, the H contained in China's oil and gas product
2s concentration is higher, the H of generation
2s corrosion is comparatively serious, to the anti-H of pipeline
2s corrosive nature requires higher.Although purifying treatment is all carried out to oil, gas in oil field at present, when purifying treatment is not good at, H in oil, gas
2when S content is higher, stress corrosion and hydrogen-induced fracture accident inevitable.The mechanism that in pipe-line, HIC produces, is commonly considered as H
2the hydrogen atom that the solution of the water-soluble formation of S and tube wall metal are produced by electrochemical reaction passes through metallic surface, go deep into tubular body, assemble at metal inside defect (nonmetal inclusion, element segregation, banded structure etc.) place and be combined into hydrogen molecule, hydrogen molecule volume increases 20 times and produces caused by huge internal stress.When hydrogen concentration is very high, the hydrogen pressure at microscopic defect place can exceed the tensile strength of material, thus forms hydrogen induced cracking, when tubing exists larger residual tension, will aggravate the formation of HIC.
Because common X42 seamless line pipe non-emphasis in chemical composition and production technique considers the requirement in Properties of HIC resistance, there is the problems such as S content in steel is higher, banded structure is serious, thus can not meet safe transport and contain H
2the oil of the corrosive mediums such as S, the requirement of Sweet natural gas.For this reason, possess the Composition Design of Properties of HIC resistance seamless line pipe and the appropriate design of manufacture method and research and just seem very important.
" there is the X70QS seamless line pipe of Properties of HIC resistance " (CN101921964A), disclose by controlling chemical composition: C0.06 ~ 0.14%, Si0.20 ~ 0.45%, Mn1.0 ~ 1.3%, S≤0.003%, P≤0.015%, Cr0.05 ~ 0.30%, Mo0.05 ~ 0.30%, N0.03 ~ 0.10%, Nb0.03 ~ 0.05%, V0.05 ~ 0.09%, Al0.015 ~ 0.025%, this line pipe has high strength, excellent impelling strength, but which are added the multiple alloying element such as Cr, Mo, Nb, cost is higher.
" there is Properties of HIC resistance X80 pipe line steel and hot rolled plate making process thereof " (CN1715435), which disclose C, P, S content that employing is lower, with the addition of the method for the alloying elements such as Cu, Ni, V, B, be beneficial to Properties of HIC resistance, but this patent is only tested B solution, solution A test-results is not pointed out, and this invention is the production for pipeline hot-rolled steel sheet.
Summary of the invention
The object of the invention is to overcome the problems referred to above and not enough and a kind of X42 seamless line pipe and manufacture method thereof of Properties of HIC resistance are provided, this seamless line pipe has excellent Properties of HIC resistance, and low temperature impact properties is good, there is high ductility, low yield strength ratio, high elongation rate, has good economy and corrosion resistance nature, can be widely used in the use of Oil/gas Well line pipe under acid attack environment.
For realizing the object of the invention, the present invention has carried out the experimental study of system in a large number from alloying element screening and proportioning, process optimization and several aspect such as Selecting parameter, organization optimization, finally determines and can meet the object of the invention alloying element proportioning and manufacturing process.
A kind of X42 seamless line pipe with Properties of HIC resistance, its chemical composition provides as follows C:0.12 ~ 0.20%, Si:0.2 ~ 0.4%, Mn:1.0 ~ 1.6%, Ti:0.01 ~ 0.04%, P by weight percentage :≤0.015%, S :≤0.010%, and surplus is iron and inevitable impurity.
Its main chemical composition effect is as follows:
C is carbide forming element, can improve the intensity of steel, and for ensureing necessary low intensity limit location 0.08%, but carbon content is too high can aggravate banded generation, affects Properties of HIC resistance, thus on be defined as 0.16%.
Si is effective deoxidant element, and content is too low can lack deoxidation effect, the too high toughness that can reduce again steel, and therefore, selection 0.2 ~ 0.4% is as the alloy content scope of Si.
Mn is austenite former, for improving the intensity of steel, can make up the yield strength of losing because carbon content reduces, Mn is while raising intensity, can also improve the toughness of steel, reduce ductile-brittle transition temperature, therefore Mn content of the present invention controls 1.0 ~ 1.6%.
Ti can stop Austenite Grain Growth, crystal grain thinning, it is carbide, the TiC particle formed is the hydrogen trap that in current steel, trap energy is the highest, therefore the existence of TiC particle can suppress the invasion of hydrogen, thus the generation of corrosion can be suppressed, improve intensity and the toughness of steel, but its strengthening effect is just not obvious when content exceedes a certain amount of simultaneously.So control its content between 0.01 ~ 0.04%, therefore Ti content of the present invention controls 0.01 ~ 0.04%.
P is impurity element, and it promotes center segregation, significantly reduces the low-temperature impact toughness of steel, improves the ductile-brittle transition temperature of steel, also can worsen the welding property of steel simultaneously, should reduce its content as far as possible, require that P content is no more than 0.015%.
S is impurity element, easily forms sulfide, comparatively large to hic resistance performance impact, requires that S content is no more than 0.01%.
There is a manufacture method for the X42 seamless line pipe of Properties of HIC resistance, comprise converter smelting, external refining (LF), continuous casting, tandem rolling obtain pipe, heating of pipe blank, MPM tandem rolling, thermal treatment; The pipe that tandem rolling obtains is heated to 1200 DEG C ~ 1300 DEG C through ring furnace, and adopt MPM tandem rolling, go out de-pipe temperature 1010 ~ 1030 DEG C, sizing temperature controls at 820 DEG C ~ 850 DEG C; Thermal treatment adopts normalizing thermal treatment, heats 880 DEG C ~ 920 DEG C normalizings, and insulation 40 ~ 60min, carries out the band temperature correction direct sum flaw detection being not less than 400 DEG C afterwards again.Normalizing can crystal grain thinning, and basically eliminate banded structure, can improve its Properties of HIC resistance effectively.
The present invention proposes the seamless line pipe and manufacture method thereof with Properties of HIC resistance, beneficial effect is, by reducing C content, add suitable Ti alloy, control sulphur phosphorus content, adopt normalizing heat treatment method, improve its Properties of HIC resistance, the line pipe mechanical property requirements of X42 rank can be met; Grain structure is even, and impelling strength is good; The manufacturing process of product is easy to realize, the homogeneity of product performance, good stability.Its production cost is lower, has good Properties of HIC resistance, and in impact and tensile property, performance is good, and metallographic structure is ferrite+perlite.
Accompanying drawing explanation
Fig. 1 is the metallographic structure photo of the embodiment of the present invention 1
Fig. 2 is the metallographic structure photo of the embodiment of the present invention 2
Fig. 3 is the metallographic structure photo of the embodiment of the present invention 3
Fig. 4 is the metallographic structure photo of the embodiment of the present invention 4
Fig. 5 is the metallographic structure photo of comparative example 1
Embodiment
Below by embodiment, the present invention is further illustrated.
The embodiment of the present invention is according to the component proportion of technical scheme, obtain pipe through converter smelting, external refining (LF), continuous casting, tandem rolling, the pipe obtained, after ring furnace heating, adopts the continuous tube rolling method of MPM, carry out normalizing treatment afterwards, then it is straight to carry out band temperature correction.The smelting composition of embodiment of the present invention steel and comparative example steel is in table 1.The main technologic parameters of embodiment of the present invention steel and comparative example steel is in table 2.The performance of embodiment of the present invention steel and comparative example steel is in table 3, and embodiment of the present invention steel and comparative example steel hic resistance the results are shown in Table 4.
The smelting composition of table 1 inventive embodiments steel and comparative example steel
| Embodiment | C | Si | Mn | P | S | Ti |
| 1 | 0.12 | 0.23 | 1.60 | 0.0090 | 0.0035 | 0.023 |
| 2 | 0.14 | 0.30 | 1.22 | 0.0063 | 0.0032 | 0.030 |
| 3 | 0.15 | 0.20 | 1.17 | 0.0054 | 0.0027 | 0.040 |
| 4 | 0.16 | 0.40 | 1.05 | 0.006 | 0.004 | 0.016 |
| 5 | 0.18 | 0.23 | 1.10 | 0.011 | 0.006 | 0.010 |
| 6 | 0.20 | 0.31 | 1.32 | 0.012 | 0.007 | 0.023 |
| Comparative example 1 | 0.18 | 0.22 | 0.40 | 0.010 | 0.006 | / |
The main technologic parameters of table 2 embodiment of the present invention steel and comparative example steel
| Embodiment | De-pipe temperature/DEG C | Sizing temperature/DEG C | Normalizing temperature/DEG C | Soaking time/min | Straightening temperature/DEG C |
[0029]
| 1 | 1010 | 820 | 880 | 50 | 400 |
| 2 | 1020 | 830 | 880 | 60 | 400 |
| 3 | 1015 | 825 | 900 | 40 | 410 |
| 4 | 1025 | 840 | 900 | 60 | 420 |
| 5 | 1030 | 845 | 920 | 40 | 410 |
| 6 | 1030 | 850 | 920 | 60 | 430 |
| Comparative example 1 | 1010 | 820 | / | / | / |
The performance of table 3 embodiment of the present invention steel and comparative example steel
Table 4 embodiment of the present invention steel and comparative example steel hic resistance result
Test basis API5L standard-required, adopts the inspection of NACE-0284-2003 standard A solution.It is generally acknowledged, CLR≤15%, CTR≤5%, CSR≤2%, Properties of HIC resistance conformance with standard specified requirement.
Visible steel grade stable mechanical property of the present invention, Properties of HIC resistance is excellent.
Claims (2)
1. one kind has the X42 seamless line pipe of Properties of HIC resistance, it is characterized in that, its chemical composition provides as follows C:0.12 ~ 0.20%, Si:0.2 ~ 0.4%, Mn:1.0 ~ 1.6%, Ti:0.01 ~ 0.04%, P by weight percentage :≤0.015%, S :≤0.010%, and surplus is iron and inevitable impurity.
2. there is a manufacture method for the X42 seamless line pipe of Properties of HIC resistance as claimed in claim 1, comprise converter smelting, external refining (LF), continuous casting, tandem rolling obtain pipe, heating of pipe blank, MPM tandem rolling, thermal treatment; It is characterized in that, the pipe that tandem rolling obtains is heated to 1200 DEG C ~ 1300 DEG C through ring furnace, and adopt MPM tandem rolling, go out de-pipe temperature 1010 ~ 1030 DEG C, sizing temperature controls at 820 DEG C ~ 850 DEG C; Thermal treatment adopts normalizing thermal treatment, heats 880 DEG C ~ 920 DEG C normalizings, and insulation 40 ~ 60min, the band temperature correction carrying out being not less than 400 DEG C afterwards is again straight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310398831.4A CN104419870A (en) | 2013-09-05 | 2013-09-05 | X42 seamless line pipe with HIC (hydrogen induced cracking) resistance and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310398831.4A CN104419870A (en) | 2013-09-05 | 2013-09-05 | X42 seamless line pipe with HIC (hydrogen induced cracking) resistance and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104419870A true CN104419870A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310398831.4A Pending CN104419870A (en) | 2013-09-05 | 2013-09-05 | X42 seamless line pipe with HIC (hydrogen induced cracking) resistance and manufacturing method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN104419870A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319362A (en) * | 2015-06-16 | 2017-01-11 | 鞍钢股份有限公司 | X52 seamless pipeline steel pipe with acid corrosion resistance and manufacturing method thereof |
| CN112011735A (en) * | 2020-08-03 | 2020-12-01 | 鞍钢股份有限公司 | Economical low-temperature steel pipe with good corrosion resistance and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914341A (en) * | 2004-02-04 | 2007-02-14 | 住友金属工业株式会社 | Steel product for line pipe excellent in resistance to HIC and line pipe produced by using the steel product |
| CN101186994A (en) * | 2007-10-15 | 2008-05-28 | 莱芜钢铁集团有限公司 | Micro-alloying steel for oil gas transport seamless pipeline and its preparation method |
| CN103160752A (en) * | 2011-12-14 | 2013-06-19 | 鞍钢股份有限公司 | High-strength seamless steel pipe with excellent low-temperature toughness and manufacturing method thereof |
-
2013
- 2013-09-05 CN CN201310398831.4A patent/CN104419870A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914341A (en) * | 2004-02-04 | 2007-02-14 | 住友金属工业株式会社 | Steel product for line pipe excellent in resistance to HIC and line pipe produced by using the steel product |
| CN101186994A (en) * | 2007-10-15 | 2008-05-28 | 莱芜钢铁集团有限公司 | Micro-alloying steel for oil gas transport seamless pipeline and its preparation method |
| CN103160752A (en) * | 2011-12-14 | 2013-06-19 | 鞍钢股份有限公司 | High-strength seamless steel pipe with excellent low-temperature toughness and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319362A (en) * | 2015-06-16 | 2017-01-11 | 鞍钢股份有限公司 | X52 seamless pipeline steel pipe with acid corrosion resistance and manufacturing method thereof |
| CN112011735A (en) * | 2020-08-03 | 2020-12-01 | 鞍钢股份有限公司 | Economical low-temperature steel pipe with good corrosion resistance and manufacturing method thereof |
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| PB01 | Publication | ||
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Application publication date: 20150318 |