CN117187686A - Spiral submerged arc welded pipe hot rolled steel strip for hydrogen-doped conveying pipeline and production method thereof - Google Patents
Spiral submerged arc welded pipe hot rolled steel strip for hydrogen-doped conveying pipeline and production method thereof Download PDFInfo
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- CN117187686A CN117187686A CN202310958824.9A CN202310958824A CN117187686A CN 117187686 A CN117187686 A CN 117187686A CN 202310958824 A CN202310958824 A CN 202310958824A CN 117187686 A CN117187686 A CN 117187686A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 14
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 12
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 10
- 238000003723 Smelting Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000009749 continuous casting Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 238000009489 vacuum treatment Methods 0.000 claims description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 229910000592 Ferroniobium Inorganic materials 0.000 claims description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 claims description 2
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 238000007872 degassing Methods 0.000 claims description 2
- 238000006477 desulfuration reaction Methods 0.000 claims description 2
- 230000023556 desulfurization Effects 0.000 claims description 2
- 238000005098 hot rolling Methods 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 abstract description 32
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 31
- 238000005336 cracking Methods 0.000 abstract description 11
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000009864 tensile test Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Classifications
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a spiral submerged arc welded pipe hot rolled steel strip for a hydrogen-doped conveying pipeline, which comprises the following chemical components in percentage by weight: 0.03-0.05%, S i:0.10-0.20%, mn:0.90-1.10%, P: less than or equal to 0.008 percent, S: less than or equal to 0.0015 percent, nb:0.020-0.040%, T i:0.005-0.020%, al:0.020-0.040%, H: less than or equal to 1.5ppm, O: less than or equal to 20ppm, N: less than or equal to 40ppm, and the balance of Fe and unavoidable impurities. Its preparing process is also disclosed. The invention adopts the design of adding Nb and T i components at a low C, mn level, strictly controls P, S and inclusion content in the production process, has uniform steel band structure, and satisfies the requirements of conventional performance and hydrogen embrittlement, hydrogen induced cracking and sulfide stress corrosion cracking tests.
Description
Technical Field
The invention relates to the field of ferrous metallurgy, in particular to a spiral submerged arc welded pipe hot rolled steel strip for a hydrogen-doped conveying pipeline and a production method thereof.
Background
The hydrogen energy has the outstanding advantages of convenient storage and transportation, various sources, cleanness and environmental protection. The transportation of hydrogen is an important link of hydrogen energy utilization, and the safe and efficient hydrogen transportation technology is a precondition for the large-scale development of hydrogen energy. The hydrogen storage and transportation modes are various, but pipeline transportation is a good choice from the aspects of transportation flow, safety and economy, and the method has irreplaceable economy under the conditions of large scale and long distance, and is the most efficient mode by utilizing the pipeline transportation. Pipeline hydrogen loading and conveying means that hydrogen with a certain concentration is mixed into natural gas to form hydrogen-mixed natural gas, and the hydrogen-mixed natural gas is conveyed through a pipeline.
At present, seamless pipes are adopted for conveying hydrogen pipelines in China, and the hot rolled steel strip of the spiral submerged arc welded pipe for the hydrogen-doped conveying pipeline is not put into engineering application. A hot rolled coil for a hydrogen transmission pipeline with 245 MPa-grade yield strength and a production method thereof are disclosed in patent publication No. CN115584441A, performance evaluation is carried out according to the technical requirement of acid-resistant pipeline steel, a related hydrogen embrittlement test is not carried out according to the requirement of a hydrogen pipeline, and the strength grade of a product is lower. At present, many documents are used for researching the hydrogen embrittlement performance of materials, such as the test researches on the hydrogen resistance of materials under different hydrogen partial pressures in the hydrogen resistance of X52 pipeline steel under the hydrogen environment, but engineering application is still blank.
Disclosure of Invention
The invention aims to provide a spiral submerged arc welded pipe hot rolled steel strip for a hydrogen-doped conveying pipeline and a production method thereof, wherein the steel strip is designed by adopting components of low C, mn and Nb and Ti, P, S and inclusion content are strictly controlled in the production process, the steel strip has uniform structure, the conventional performance and hydrogen embrittlement, hydrogen induced cracking and sulfide stress corrosion cracking tests completely meet the requirements, and the steel strip is used for hydrogen-doped (the hydrogen-doped proportion is more than or equal to 10%) conveying pipeline engineering after being manufactured by adopting spiral submerged arc welding.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a hot rolled steel strip of a spiral submerged arc welded pipe for a hydrogen-doped conveying pipeline, which comprises the following chemical components in percentage by weight: 0.03-0.05%, si:0.10-0.20%, mn:0.90-1.10%, P: less than or equal to 0.008 percent, S: less than or equal to 0.0015 percent, nb:0.020-0.040%, ti:0.005-0.020%, al:0.020-0.040%, H: less than or equal to 1.5ppm, O: less than or equal to 20ppm, N: less than or equal to 40ppm, and the balance of Fe and unavoidable impurities.
Further, the chemical components of the steel belt are as follows by weight percent: 0.033%, si:0.15%, mn:0.95%, P:0.007%, S:0.0008%, nb:0.025%, ti:0.010%, al:0.028%, H:0.00007%, O:0.0014%, N:0.0027% Fe and unavoidable impurities in balance.
Further, the chemical components of the steel belt are as follows by weight percent: 0.042%, si:0.12%, mn:1.05%, P:0.006%, S:0.0006%, nb:0.033%, ti:0.015%, al:0.032%, H:0.00008%, O:0.0010%, N:0.0024% Fe and unavoidable impurities in balance.
Further, the chemical components of the steel belt are as follows by weight percent: 0.040%, si:0.16%, mn:1.00%, P:0.006%, S:0.0010%, nb:0.035%, ti:0.012%, al:0.035%, H:0.00006%, O:0.0008%, N:0.0031% and the balance of Fe and unavoidable impurities.
A production method of a spiral submerged arc welded pipe hot rolled steel strip for a hydrogen-doped conveying pipeline comprises the following steps:
1) Smelting and casting
The KR method is adopted in the smelting process to desulfurize molten iron and high-quality scrap steel, so that the S of the molten iron fed into the converter is ensured to be less than or equal to 0.002%; when the converter is used for smelting, self-produced low-sulfur scrap steel is adopted, the converter is used for dephosphorizing a large amount of slag, the tapping P content is less than or equal to 0.007%, and the tapping temperature is more than or equal to 1620 ℃; the LF refining adopts a large amount of slag to carry out slagging and desulfurization, S is ensured to be less than or equal to 0.0015 percent, ferrocolumbium is added in the LF refining process, RH vacuum treatment is carried out to carry out deep degassing, ferrotitanium is added in the vacuum treatment process, the molten steel after the vacuum treatment is subjected to calcium treatment, and the argon soft blowing time is longer than 12 minutes, so that the inclusion is fully denatured and floats upwards; the whole process of protection casting is carried out during continuous casting of the plate blank, the superheat degree is controlled at 15-30 ℃, the pulling speed is 1.0-1.2m/min, and the number of continuous casting furnaces is not more than 5 furnaces in order to control the content of inclusions;
2) Heating and rolling
The heating temperature of the slab is 1180-1200 ℃, the heating time is more than or equal to 150min, and the uniform temperature of the billet is ensured; the manufacturing process is controlled by two stages of hot rolling rough rolling and finish rolling, the initial rolling temperature of rough rolling is 1150-1170 ℃, the initial rolling temperature of finish rolling is less than or equal to 1050 ℃, and the final rolling temperature is 810-850 ℃;
3) Cooling
And after controlled rolling, the steel strip enters an encrypted laminar flow cooling area, is cooled to 560-600 ℃ at a cooling speed of 15-25 ℃/s, is coiled, and is cooled to room temperature by air cooling, so that the steel strip is obtained.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) The steel strip adopts low C, low Mn and ultra-low P, S design, reduces center segregation, reduces MnS inclusions, ensures that the banded structure is not more than 1.0 level, and ensures that the inclusion level is not more than 1.0 level, thereby reducing the hydrogen atom aggregation source and the hydrogen molecule formation source and improving the hydrogen induced cracking resistance of the steel. And Nb and Ti elements are added simultaneously, so that grains are refined, the grain size is ensured to be larger than 11 grades, and the strength is improved.
(2) All the slow strain rate tensile test, hydrogen induced cracking and sulfide stress corrosion cracking test under the hydrogen environment of the steel belt are qualified, and the steel belt has good hydrogen embrittlement resistance.
(3) The steel strip adopts a spiral submerged arc welding process for manufacturing pipes, and compared with a seamless pipe, the steel strip has the advantages of low cost, high dimensional accuracy and large pipe diameter, and the finished pipe is used for hydrogen-loading (the hydrogen-loading ratio is more than or equal to 10%) conveying pipeline engineering.
Drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 is a graph showing the stress-strain curve of a slow strain rate tensile test in a hydrogen environment according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Examples 1-3 are the results of a tensile test of chemical composition and process steps, mechanical properties, hydrogen induced cracking, sulfide stress corrosion cracking, and slow strain rate in a hydrogen environment, adopted by the spiral submerged arc welded pipe hot rolled steel strip for a hydrogen-doped conveying pipeline and the production method thereof. These examples are merely illustrative of the best modes of carrying out the invention and do not limit the scope of the invention in any way.
The chemical composition content of each example is shown in table 1; the smelting and continuous casting process parameters are shown in Table 2; the heating, rolling and cooling process parameters are shown in Table 3; the mechanical properties of the resulting steel strip are shown in table 4; the inclusions, grain size and band structure are shown in Table 5; the hydrogen induced cracking corrosion test is shown in table 6; hydrogen sulfide stress corrosion test is shown in table 7; the slow strain rate tensile test in a hydrogen environment is shown in table 8.
TABLE 1 chemical composition (wt%)
TABLE 2 smelting and continuous casting process parameters
TABLE 3 heating, rolling and Cooling Process parameters
TABLE 4 mechanical Properties
TABLE 5 inclusion, grain size and band structure
TABLE 6 Hydrogen induced cracking test
TABLE 7 Hydrogen sulfide stress corrosion test
TABLE 8 slow strain rate tensile test in hydrogen environment
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (5)
1. A spiral submerged arc welded pipe hot rolled steel strip for a hydrogen-doped conveying pipeline is characterized in that: the steel belt comprises the following chemical components in percentage by weight: 0.03-0.05%, si:0.10-0.20%, mn:0.90-1.10%, P: less than or equal to 0.008 percent, S: less than or equal to 0.0015 percent, nb:0.020-0.040%, ti:0.005-0.020%, al:0.020-0.040%, H: less than or equal to 1.5ppm, O: less than or equal to 20ppm, N: less than or equal to 40ppm, and the balance of Fe and unavoidable impurities.
2. The spiral submerged arc welded pipe hot rolled steel strip for a hydrogen-doped transfer pipe of claim 1, wherein: the steel belt comprises the following chemical components in percentage by weight: 0.033%, si:0.15%, mn:0.95%, P:0.007%, S:0.0008%, nb:0.025%, ti:0.010%, al:0.028%, H:0.00007%, O:0.0014%, N:0.0027% Fe and unavoidable impurities in balance.
3. The spiral submerged arc welded pipe hot rolled steel strip for a hydrogen-doped transfer pipe of claim 1, wherein: the steel belt comprises the following chemical components in percentage by weight: 0.042%, si:0.12%, mn:1.05%, P:0.006%, S:0.0006%, nb:0.033%, ti:0.015%, al:0.032%, H:0.00008%, O:0.0010%, N:0.0024% Fe and unavoidable impurities in balance.
4. The spiral submerged arc welded pipe hot rolled steel strip for a hydrogen-doped transfer pipe of claim 1, wherein: the steel belt comprises the following chemical components in percentage by weight: 0.040%, si:0.16%, mn:1.00%, P:0.006%, S:0.0010%, nb:0.035%, ti:0.012%, al:0.035%, H:0.00006%, O:0.0008%, N:0.0031% and the balance of Fe and unavoidable impurities.
5. The method for producing a spiral submerged arc welded pipe hot rolled steel strip for a hydrogen-doped transportation pipe according to any one of claims 1 to 4, wherein: comprising the following steps:
1) Smelting and casting
The KR method is adopted in the smelting process to desulfurize molten iron and high-quality scrap steel, so that the S of the molten iron fed into the converter is ensured to be less than or equal to 0.002%; when the converter is used for smelting, self-produced low-sulfur scrap steel is adopted, the converter is used for dephosphorizing a large amount of slag, the tapping P content is less than or equal to 0.007%, and the tapping temperature is more than or equal to 1620 ℃; the LF refining adopts a large amount of slag to carry out slagging and desulfurization, S is ensured to be less than or equal to 0.0015 percent, ferrocolumbium is added in the LF refining process, RH vacuum treatment is carried out to carry out deep degassing, ferrotitanium is added in the vacuum treatment process, the molten steel after the vacuum treatment is subjected to calcium treatment, and the argon soft blowing time is longer than 12 minutes, so that the inclusion is fully denatured and floats upwards; the whole process of protection casting is carried out during continuous casting of the plate blank, the superheat degree is controlled at 15-30 ℃, the pulling speed is 1.0-1.2m/min, and the number of continuous casting furnaces is not more than 5 furnaces in order to control the content of inclusions;
2) Heating and rolling
The heating temperature of the slab is 1180-1200 ℃, the heating time is more than or equal to 150min, and the uniform temperature of the billet is ensured; the manufacturing process is controlled by two stages of hot rolling rough rolling and finish rolling, the initial rolling temperature of rough rolling is 1150-1170 ℃, the initial rolling temperature of finish rolling is less than or equal to 1050 ℃, and the final rolling temperature is 810-850 ℃;
3) Cooling
And after controlled rolling, the steel strip enters an encrypted laminar flow cooling area, is cooled to 560-600 ℃ at a cooling speed of 15-25 ℃/s, is coiled, and is cooled to room temperature by air cooling, so that the steel strip is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310958824.9A CN117187686A (en) | 2023-08-01 | 2023-08-01 | Spiral submerged arc welded pipe hot rolled steel strip for hydrogen-doped conveying pipeline and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310958824.9A CN117187686A (en) | 2023-08-01 | 2023-08-01 | Spiral submerged arc welded pipe hot rolled steel strip for hydrogen-doped conveying pipeline and production method thereof |
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| CN117187686A true CN117187686A (en) | 2023-12-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424933A (en) * | 2011-12-02 | 2012-04-25 | 山西太钢不锈钢股份有限公司 | Hot-rolled high-strength strip steel and manufacturing method thereof |
| CN109402510A (en) * | 2018-11-19 | 2019-03-01 | 包头钢铁（集团）有限责任公司 | A kind of resistance to anti-H that extremely trembles with fear2S corrodes welded tube hot rolled strip and its manufacturing method |
| CN112226676A (en) * | 2020-09-03 | 2021-01-15 | 包头钢铁（集团）有限责任公司 | Low-cost L320MS/X46MS hot-rolled steel strip for hydrogen sulfide corrosion resistant welded pipe and manufacturing method thereof |
| CN113943889A (en) * | 2021-09-06 | 2022-01-18 | 包头钢铁（集团）有限责任公司 | Yield strength 450MPa grade anti-H2S corrosion pipeline steel and production method thereof |
| CN114457282A (en) * | 2020-11-09 | 2022-05-10 | 上海梅山钢铁股份有限公司 | Hot-rolled steel plate for 415 MPa-grade yield strength longitudinal welded pipe |
| CN116426842A (en) * | 2023-02-10 | 2023-07-14 | 包头钢铁（集团）有限责任公司 | Steel for Nb-Ti component L360M-WG hot-bending bend and production method thereof |
| CN116479323A (en) * | 2023-03-13 | 2023-07-25 | 包头钢铁（集团）有限责任公司 | H-resistant 2 S corrosion pipeline steel and corrosion test method thereof |
-
2023
- 2023-08-01 CN CN202310958824.9A patent/CN117187686A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424933A (en) * | 2011-12-02 | 2012-04-25 | 山西太钢不锈钢股份有限公司 | Hot-rolled high-strength strip steel and manufacturing method thereof |
| CN109402510A (en) * | 2018-11-19 | 2019-03-01 | 包头钢铁（集团）有限责任公司 | A kind of resistance to anti-H that extremely trembles with fear2S corrodes welded tube hot rolled strip and its manufacturing method |
| CN112226676A (en) * | 2020-09-03 | 2021-01-15 | 包头钢铁（集团）有限责任公司 | Low-cost L320MS/X46MS hot-rolled steel strip for hydrogen sulfide corrosion resistant welded pipe and manufacturing method thereof |
| CN114457282A (en) * | 2020-11-09 | 2022-05-10 | 上海梅山钢铁股份有限公司 | Hot-rolled steel plate for 415 MPa-grade yield strength longitudinal welded pipe |
| CN113943889A (en) * | 2021-09-06 | 2022-01-18 | 包头钢铁（集团）有限责任公司 | Yield strength 450MPa grade anti-H2S corrosion pipeline steel and production method thereof |
| CN116426842A (en) * | 2023-02-10 | 2023-07-14 | 包头钢铁（集团）有限责任公司 | Steel for Nb-Ti component L360M-WG hot-bending bend and production method thereof |
| CN116479323A (en) * | 2023-03-13 | 2023-07-25 | 包头钢铁（集团）有限责任公司 | H-resistant 2 S corrosion pipeline steel and corrosion test method thereof |
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