CN102605242A - Steel capable of resisting hydrogen-induced cracking for pressure containers and manufacturing method for steel - Google Patents
Steel capable of resisting hydrogen-induced cracking for pressure containers and manufacturing method for steel Download PDFInfo
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Abstract
The invention relates to steel capable of resisting hydrogen-induced cracking for pressure containers. The steel comprises the following chemical components in percentage by weight: 0.15 to 0.25 percent of C, 0.10 to 0.30 percent of Si, 1.0 to 1.6 percent of Mn, less than or equal to 120ppm of P, less than or equal to 0.002 percent of S, 0.35 to 0.60 percent of Mo, less than or equal to 0.05 percent of V, 0.20 to 0.80 percent of Ni, 0.0013 to 0.0045 percent of Ca, 0.002 to 0.050 percent of Al, and the balance of iron and inevitable impurities. The invention also relates to a manufacturing method for the steel. The method comprises the following steps of: smelting in an LD converter, performing external refining and die casting, then heating the steel billet to the temperature of between 1100 and 1250 DEG C, and rolling with the deformation of at least over 80 percent; quenching the rolled steel plate, reheating the rolled steel plate at the temperature of between 860 and 940 DEG C, fully preserving the heat, and immediately spraying water after heat preservation of the steel plate to quickly cool the steel plate to the temperature of below 200 DEG C; and tempering the quenched steel plate at the temperature of between 600 and 700 DEG C, and cooling in air after the heat is preserved for long enough time to obtain steel with high strength, high toughness and excellent hydrogen-induced cracking resistance in a wet hydrogen sulfide environment. According to the invention, the yield strength is more than 485MPa, the tensile strength is 620-795MPa, and the elongation at the standard distance of 50 millimeters exceeds 16 percent; and the steel has excellent impact toughness, and is suitable for the pressure containers.
Description
Technical field
The present invention relates to steels for pressure vessel use, particularly relate to a kind of anti-hydrogen induced cracking(HIC) steels for pressure vessel use and method of manufacture thereof.
Background technology
Relate to the patent that in wet hydrogen-sulfide environmental, has the steel of hydrogen-induced cracking resistance ability at present and mainly concentrate on the pipe line steel field, the patent that relates to steels for pressure vessel use is also few.
CN1914341A relates to a kind of steel plate that is used to make pipeline with anti-hydrogen induced cracking(HIC) (HIC) performance, and wherein C content is at 0.03-0.15%, Mn, Cr, Mo, V, B, Nb alloying, and its anti-HIC performance realizes through containing Cu or Ni.Be mingled with the TiN maximum in this steel and be no more than 30 μ m.
CN1715435A relates to a kind of pipe line steel and hot rolled plate making process thereof with anti-HIC (hydrogen induced cracking(HIC)) performance, and wherein C is no more than 0.055% at most, contains elements such as Si, Mn, Ti, V, Nb, B, is used for the hot-rolled sheet coil of pipeline, generally is no more than 20mm.
These two steel grades have bigger difference with the present invention on purposes and steel plate thickness.
JP2008-007841A discloses a kind of composition tissue and ME of making pipeline, ocean structure, steels for pressure vessel use.Utilize Nb and Ti element to improve intensity, composition satisfies relational expression 1.48-1.5*Si-14.3*Ti-73*N＞0.72.Adopt continuously cast bloom as the raw material production steel plate on the technology.The area of cracks of anti-hydrogen induced cracking(HIC) (HIC) test is than (cracking area ratios is CAR) less than 4%.This patent does not contain Nb and Ti element, and is therefore simpler to the requirement of steel rolling process.This patent has adopted die casting-cogging-rolling technology in addition, can better meet the big compression ratio of steel heavy plate for pressure vessels requirement.
JP60-228655A discloses a kind of low-carbon low-alloy steel, is used for pressurized vessel and oil and gas pipes.It contains element La, and effect is fixing P.Through satisfying the purpose that relational expression Mn+150P+2.5C≤44 reach anti-HIC.Add this element but in the STEELMAKING PRODUCTION of most of steel mills, also seldom see at present.
The pressurized vessel of petroleum chemical industry is called the collapse mode of hydrogen induced cracking(HIC) (HIC) because of the hydrogen-sulfide environmental (existing even without stress) of humidity.Therefore require the pressurized vessel under this kind service condition to have good anti-hydrogen induced cracking(HIC) (HIC) performance with carbon steel and low alloy steel.Industry is at present gone up this type of steel commonly used and is mainly contained 16MnR (HIC), SA516Gr.70 (HIC) etc.The ys general requirement of this type steel is greater than 280MPa, and tensile strength is greater than 480MPa, and alloy content is low, belongs to carbon steel.But the requirement that petrochemical equipment maximizes day by day makes the wall thickness of Steel Vessel constantly increase, thereby has strengthened the manufacture difficulty of this type steel plate, and brings a series of difficult problems such as transportation, lifting, installation.Therefore the more demand of the steel grade of the anti-hydrogen induced cracking(HIC) of high intensity levels has been proposed.Performance requriements to this type material is intensity height, good toughness, hydrogen-induced cracking resistance can be good.
Summary of the invention
In order to solve the problems referred to above of prior art, the object of the present invention is to provide a kind of anti-hydrogen induced cracking(HIC) steels for pressure vessel use.
To achieve these goals, anti-hydrogen induced cracking(HIC) steels for pressure vessel use of the present invention, its chemical ingredients (weight %) is: C:0.15-0.25%, Si:0.10-0.30%; Mn:1.0-1.6%, P≤0.012%, S≤0.002%; Mo:0.35-0.60%, V≤0.05%, Ni:0.20-0.80%; Ca:0.0015-0.0045%, Al:0.002-0.050%, all the other are iron and unavoidable impurities.
The present invention has designed a kind of low alloy steel of more high intensity levels, through effective composition proportion, makes the invention steel grade be easy to smelt, and adopting simultaneously quenches adds the tempered quenching-and-tempering process, guarantees the mechanical property and the hydrogen-induced cracking resistance ability of steel plate.Product can be made cylindrical shell through curling, and can make end socket behind the spinning, is used to be manufactured on the pressurized vessel that uses under the hydrogen sulfide Working environment.
Another object of the present invention provides the method for manufacture of above-mentioned anti-hydrogen induced cracking(HIC) steels for pressure vessel use.This method comprises the steps:
LD converter smelting → external refining (LF desulfurization, RH vacuum outgas, hello silk Ca handle) → die casting → steel ingot heating → breaking down → finishing → heating → rolling → quenching → tempering.
Through the LD converter smelting, after external refining and the die casting, steel billet is heated to after 1100-1250 ℃ and is rolled with the deflection more than at least 80%;
Rolled sheet material carries out quench treatment, and rolled sheet material is at 860-940 ℃ of reheat, and fully insulation, steel plate insulation finish to spray water immediately to be quickly cooled to below 200 ℃;
Quenched nickelclad then carries out temper, and tempering temperature 600-700 ℃, the metastable organizations such as martensite that the chien shih quenching forms during the insulation sufficiently long fully decompose, and carbide is fully separated out, and forms stabilizing tissue.The laggard line space of tempering is cold.
The present invention with the mode of heavy plate rolling-modifier treatment produce a kind of high-intensity high-tenacity and wet hydrogen-sulfide environmental have good hydrogen-induced cracking resistance can steels for pressure vessel use; Make its ys greater than 485MPa; Tensile strength is in 620-795MPa; 50mm gauge length unit elongation surpasses 16%, and has good impelling strength.
Description of drawings
Fig. 1 be the embodiment of the invention 5 after bakingout process, typical microtexture is a tempering bainite.
Embodiment
Below in conjunction with embodiment and accompanying drawing, characteristics of the present invention and beneficial effect are described at length.
Among the present invention, unless otherwise, content all refers to weight percent content.
In order to realize the purpose that the steels for pressure vessel use that intensity height, good toughness, hydrogen-induced cracking resistance can be good is provided of the present invention, each element is controlled as follows:
Carbon: carbon is strengthening element the most basic in steel, is that austenitic transformation becomes the requisite elements of strengthening phase such as martensite, bainite.It is relatively poor that carbon content is crossed when low the hardening capacity of steel plate, is prone to tissues such as generation ferritic when quenching for thick steel plates, is difficult to reach the tissue of HS needs; Otherwise the too high plasticity to steel of carbon content, toughness and weldableness are unfavorable.The span of control of carbon content of the present invention is 0.15-0.25%.
Silicon: silicon plays desoxydatoin in steel, also plays solution strengthening, but too high levels then makes steel fragility occur.The span of control of silicone content is 0.10-0.30% among the present invention.
Manganese: manganese plays the solution strengthening effect, can improve the intensity and the hardness of steel plate.Owing to postponed ferritic, pearlitic formation, thereby enlarged the scope of cooling off the rate of cooling that forms martensite, bainite structure, improved hardening capacity.Mn content range of the present invention is 1.0-1.6%.In order to improve armor plate strength, preferably, Mn:1.21-1.55%.
Sulphur and phosphorus: sulphur and phosphorus belong to unavoidable impurities element in the steel, should reduce content as far as possible.Sulphur forms the plastic occluded foreignsubstance manganese sulfide with chemical combination such as manganese in steel, be the potential nucleation site of hydrogen induced cracking.Through super low sulfur (less than 15ppm) and Ca processing sulfide is carried out inclusion morphology control, can have high impelling strength and good hydrogen-induced cracking resistance ability by ten steel plates.P content is below the 120ppm among the present invention.
Molybdenum: molybdenum enlarges the γ phase region, and the strongly inhibited perlite forms, and HIC is favourable in antagonism, promotes bainite to form, and phase-change organization plays an important role to control.Certain Mo content can guarantee the hardening capacity of Plate Steel, and simultaneously, Mo and C binding ability are stronger, and the carbide that forms during thermal treatment all has contribution to room temperature strength and hot strength.Mo in the steel helps alleviating temper brittleness in addition.Mo content range 0.35-0.60% of the present invention.In order to guarantee steel plate hardening capacity, avoid forming pearlitic structure, preferably, Mo:0.40-0.60%.
Vanadium: vanadium is separated out with crystal grain thinning through deposition and is produced reinforcement, and the carbonitride of vanadium is separated out to be on good terms and significantly improved intensity in the steel.Adding a small amount of vanadium in the steel just has significant strengthening effect, and the present invention allows to add a small amount of V as required, and content is controlled at below 0.05%, is preferably 0.002-0.05%.
Nickel: nickel is non-carbide forming element, in steel, mainly plays the effect of solution strengthening.It is useful to toughness to add nickel in the steel, can also compensate the strength degradation that the increase of steel plate thickness causes simultaneously.The content range of Ni is 0.20-0.80%, Ni:0.25-0.80%.
Aluminium: aluminium is the main deoxidant element in the steel, helps crystal grain thinning, all contains a certain amount of in the general steel.The aluminium that adds among the present invention mainly is used for deoxidation and crystal grain thinning, and adding aluminium content is 0.002-0.050%.Too high for fear of inclusion content, preferably, Al:0.004-0.035%.
Calcium: the strip sulfide inclusion is converted into spherical sulfide in the steel in order to make, and adopts Ca to handle.The content range of Ca is 0.0013-0.0045 among the present invention, is preferably 0.0015-0.0045%.
Copper: thus copper can play and hinders Wasserstoffatoms and in steel, spread the hydrogen-induced cracking resistance ability that improves steel in steel through forming protective membrane, but when the pH of sour environment value less than 4.5 the time, this protective membrane will be damaged.The hydrogen-sulfide environmental of considering petrochemical industry is relatively harsher, and the not main adding Cu element that relies on of the present invention is realized the hydrogen-induced cracking resistance ability.
The present invention with the mode of heavy plate rolling and modifier treatment produce above-mentioned high-intensity high-tenacity and wet hydrogen-sulfide environmental have good hydrogen-induced cracking resistance can steels for pressure vessel use; Make its ys greater than 485MPa; Tensile strength is in 620-795MPa; 50mm gauge length unit elongation surpasses 16%, and has good impelling strength.
Among the present invention through the LD converter smelting; After external refining and the die casting; Steel billet is heated to 1100-1250 ℃ and makes the austenite structure homogenizing, and the carbide of molybdenum in the steel, vanadium is fully dissolved, and the AlN precipitate high temperatures in the steel can stop growing up of original austenite grains.Control the Heating temperature lower limit simultaneously and be in order to consider the temperature drop of slab when rolling, guarantee to accomplish rolling in specified temperature.Steel plate rolling time control system compression ratio is out of shape more than 80% at least.
Rolled sheet material need be through bakingout process scalability ability, and typical thermal treatment process is quenching, temper.Rolled sheet material is at 860-940 ℃ of (being preferably 890-910 ℃) reheat; Fully insulation (preferred soaking time is 30-300 minute) makes the steel plate internal and external temperature consistent; Form the single and uniform austenite structure, the steel plate insulation finishes the quick cooling of water spray immediately and reduces at least below 100 ℃ until steel billet temperature.Quenched nickelclad then carries out temper to adjust final performance; Tempering temperature 600-700 ℃ (being preferably 620-690 ℃); The insulation sufficiently long time (preferred soaking time is 60-600 minute) is fully decomposed the metastable organizations such as martensite that form of quenching; Carbide is fully separated out, and forms to stablize bainite structure.Air cooling after the tempering.
Said composition design is easy to implement, not only effectively plays strengthening effect through Alloying Treatment, and postpones the austenitic transformation incubation time, is convenient to the thick steel plates thermal treatment process and implements.Through the reasonable cooperation of various alloying elements, make the steel plate of all thickness all obtain desired properties.After mentioned component and production technique, all thickness steel plate heat treatment state ys is greater than 485MPa, and tensile strength is in 620-795MPa, and 50mm gauge length unit elongation surpasses 16%, and has good impelling strength.
The hydrogen induced cracking(HIC) of steel is closely related with wherein contained sulfide inclusion and banded pearlitic structure.The present invention is through strict control S constituent content, and it is very low-level that sulfide inclusion is reduced to.Through adding the Ca element, make the sulfide inclusion nodularization of remaining minute quantity again.But these measures have reduced Wasserstoffatoms accumulative place in steel, have reduced the destructive force of Wasserstoffatoms when hydrogen molecule changes, thereby have improved the anti-hydrogen induced cracking(HIC) ability of steel.
Another measure that the present invention adopts is in the big thickness range of steel, to adopt the bainite structure design.In composition range of the present invention; Adopting quenches adds the tempered quenching-and-tempering process; In the thickness range of very big steel, basic all form the appearance that bainite structures have been avoided the common banded pearlitic structure that causes hydrogen induced cracking(HIC), thereby improved the hydrogen-induced cracking resistance ability of steel.
Embodiment
The chemical ingredients of embodiment of the invention steel is seen table 1, and main technologic parameters is seen table 2.
The chemical ingredients of table 1 embodiment of the invention steel, weight %
The processing condition of table 2 embodiment of the invention steel
| Embodiment | Thickness, mm | Quenching temperature, ℃ | Quench cooled | Tempering temperature, ℃ | The tempering cooling |
| 1 | 30 | 910 | Water-cooled | 645 | Air cooling |
| 2 | 50 | 900 | Water-cooled | 655 | Air cooling |
| 3 | 57 | 905 | Water-cooled | 690 | Air cooling |
| 4 | 80 | 900 | Water-cooled | 640 | Air cooling |
| 5 | 90 | 890 | Water-cooled | 645 | Air cooling |
| 6 | 98 | 910 | Water-cooled | 650 | Air cooling |
| 7 | 110 | 890 | Water-cooled | 630 | Air cooling |
| 8 | 130 | 900 | Water-cooled | 620 | Air cooling |
Test Example 1: mechanical property
According to GB/T 228-2002 and GB/T 229-2007 method, ys, tensile strength, the unit elongation of measuring embodiment of the invention steel reach-20 ℃ mechanical properties such as ballistic work, and its result sees table 3.
The mechanical property of table 3 embodiment of the invention steel
Can find out that from table 3 ys of embodiment of the invention steel plate is all above 485MPa, tensile strength is positioned at 625-780MPa; 50mm calibrates apart from unit elongation all above 16%; Level in kind reaches more than 24%, has good low temperature impact properties, and-20 ℃ of ballistic works surpass 200J.
Test Example 2: hydrogen-induced cracking resistance ability
According to HIC (hydrogen induced cracking) touchstone: NACE TM0284-2003 (contains saturated H at A solution
2The 5%NaCl+0.5%CH of S
3COOH solution, PH=3.0) in, soaked 96 hours, measure embodiment of the invention steel hydrogen-induced cracking resistance can, its result sees table 4.
The hydrogen-induced cracking resistance ability of table 4 embodiment of the invention steel
Can find out that from table 4 the equal flawless of embodiments of the invention steel shows to have good hydrogen-induced cracking resistance ability.
Test Example 3: metallographic structure
Fig. 1 is the metallographic structure of the embodiment of the invention 5 steel.
As can be seen from the figure, the weave construction of steel plate of the present invention is a tempering bainite.Other embodiment have also obtained similar result.
The present invention is with the mode of alloying, adds the tempered heat treatment mode through quenching and produces pressurized vessel and use slab, makes steel plate have intensity height, good toughness, characteristics that hydrogen-induced cracking resistance is good, production process simple possible.Alternative other carbon steel of present intensity level of product is used for being manufactured on the cylindrical shell, end socket of the large-size chemical pressurized vessel that wet hydrogen-sulfide environmental works etc.
Claims (17)
1. anti-hydrogen induced cracking(HIC) steels for pressure vessel use, its chemical ingredients by weight percentage is: C:0.15-0.25%, Si:0.10-0.30%; Mn:1.0-1.6%, P≤0.012%, S≤0.002%; Mo:0.35-0.60%, V≤0.05%, Ni:0.20-0.80%; Ca:0.0013-0.0045%, Al:0.002-0.050%, all the other are iron and unavoidable impurities.
2. anti-hydrogen induced cracking(HIC) steels for pressure vessel use as claimed in claim 1 is characterized in that, said steel be organized as tempering bainite.
3. according to claim 1 or claim 2 anti-hydrogen induced cracking(HIC) steels for pressure vessel use is characterized in that Mn:1.21-1.55%.
4. like the arbitrary described anti-hydrogen induced cracking(HIC) steels for pressure vessel use of claim 1-3, it is characterized in that S≤0.0015%.
5. like the arbitrary described anti-hydrogen induced cracking(HIC) steels for pressure vessel use of claim 1-4, it is characterized in that Ni:0.25-0.80%.
6. like the arbitrary described anti-hydrogen induced cracking(HIC) steels for pressure vessel use of claim 1-5, it is characterized in that Mo:0.40-0.60%.
7. like the arbitrary described anti-hydrogen induced cracking(HIC) steels for pressure vessel use of claim 1-6, it is characterized in that V:0.002-0.05%.
8. like the arbitrary described anti-hydrogen induced cracking(HIC) steels for pressure vessel use of claim 1-7, it is characterized in that Al:0.004-0.035%.
9. like the arbitrary described anti-hydrogen induced cracking(HIC) steels for pressure vessel use of claim 1-8, it is characterized in that Ca:0.0015-0.0045%.
10. like the arbitrary described anti-hydrogen induced cracking(HIC) steels for pressure vessel use of claim 1-9, its thickness is 30-130mm.
11. the method for manufacture like the arbitrary described anti-hydrogen induced cracking(HIC) steels for pressure vessel use of claim 1-10 comprises the steps:
Through the LD converter smelting, after external refining and the die casting, steel billet is heated to after 1100-1250 ℃ and is rolled with the deflection more than at least 80%;
Rolled sheet material carries out quench treatment, and rolled sheet material is at 860-940 ℃ of reheat, and fully insulation, steel plate insulation finish to spray water immediately to be quickly cooled to below 100 ℃;
Quenched nickelclad then carries out temper, and tempering temperature is 600-700 ℃, and the metastable organizations such as martensite that the chien shih quenching forms during the insulation sufficiently long fully decompose, and carbide is fully separated out, and forms stabilizing tissue.
12. method as claimed in claim 11 is characterized in that, the soaking time of quenching is 30-300 minute.
13., it is characterized in that the tempered soaking time is 60-600 minute like claim 11 or 12 described methods.
14., it is characterized in that in the quenching, the steel plate insulation finishes to spray water immediately to be quickly cooled to below 100 ℃ like the arbitrary described method of claim 11-13.
15., it is characterized in that the steel plate after the tempering carries out air cooling like the arbitrary described method of claim 11-14.
16., it is characterized in that rolled sheet material is at 890-910 ℃ of reheat like the arbitrary described method of claim 11-15.
17., it is characterized in that tempering temperature is 620-690 ℃ like the arbitrary described method of claim 11-16.
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| CN102925814A (en) * | 2012-11-28 | 2013-02-13 | 武汉钢铁(集团)公司 | Steel for hydrogen sulfide stress corrosion resisting pressure container and production method of steel |
| CN103160740A (en) * | 2013-03-16 | 2013-06-19 | 南阳汉冶特钢有限公司 | Steel 18MnMoNbR for pressure vessel and process for producing 18MnMoNbR steel plate with thickness of 100mm |
| CN103866187A (en) * | 2014-03-24 | 2014-06-18 | 济钢集团有限公司 | Steel plate for 500MPa-level pressure container for resisting sulfide stress corrosion cracking and production method thereof |
| CN105603304A (en) * | 2016-01-15 | 2016-05-25 | 宝山钢铁股份有限公司 | Q370R pressure vessel applicable thick steel plate with good HIC (hydrogen induced cracking) and SSCC (sulfide stress corrosion cracking) resistance and manufacture method thereof |
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| US9573432B2 (en) | 2013-10-01 | 2017-02-21 | Hendrickson Usa, L.L.C. | Leaf spring and method of manufacture thereof having sections with different levels of through hardness |
| WO2017219553A1 (en) * | 2016-06-23 | 2017-12-28 | 江阴兴澄特种钢铁有限公司 | 200 mm-thick pressure vessel steel plate resistant against hydrogen-induced cracking and manufacturing method thereof |
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| CN114737027A (en) * | 2022-04-15 | 2022-07-12 | 首钢集团有限公司 | 345 MPa-grade container steel with excellent hydrogen induced cracking resistance and preparation method thereof |
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| CN102925814B (en) * | 2012-11-28 | 2014-07-23 | 武汉钢铁(集团)公司 | Steel for hydrogen sulfide stress corrosion resisting pressure container and production method of steel |
| CN102925814A (en) * | 2012-11-28 | 2013-02-13 | 武汉钢铁(集团)公司 | Steel for hydrogen sulfide stress corrosion resisting pressure container and production method of steel |
| CN103160740A (en) * | 2013-03-16 | 2013-06-19 | 南阳汉冶特钢有限公司 | Steel 18MnMoNbR for pressure vessel and process for producing 18MnMoNbR steel plate with thickness of 100mm |
| CN103160740B (en) * | 2013-03-16 | 2015-08-26 | 南阳汉冶特钢有限公司 | A kind of pressure vessel steel 18MnMoNbR and 100mm thick plates production technique thereof |
| US9573432B2 (en) | 2013-10-01 | 2017-02-21 | Hendrickson Usa, L.L.C. | Leaf spring and method of manufacture thereof having sections with different levels of through hardness |
| US9890440B2 (en) | 2013-10-01 | 2018-02-13 | Hendrickson Usa, L.L.C. | Leaf spring and method of manufacture thereof having sections with different levels of through hardness |
| CN103866187A (en) * | 2014-03-24 | 2014-06-18 | 济钢集团有限公司 | Steel plate for 500MPa-level pressure container for resisting sulfide stress corrosion cracking and production method thereof |
| CN105603304B (en) * | 2016-01-15 | 2018-06-01 | 宝山钢铁股份有限公司 | It is a kind of that there is good hic resistance, the Q370R thick steel plate for pressure vessel of SSCC characteristics and manufacturing method |
| CN105603304A (en) * | 2016-01-15 | 2016-05-25 | 宝山钢铁股份有限公司 | Q370R pressure vessel applicable thick steel plate with good HIC (hydrogen induced cracking) and SSCC (sulfide stress corrosion cracking) resistance and manufacture method thereof |
| CN105886909A (en) * | 2016-04-19 | 2016-08-24 | 江阴兴澄特种钢铁有限公司 | Pressure container steel plate resistant to hydrogen induced cracking and manufacturing method thereof |
| CN105886909B (en) * | 2016-04-19 | 2017-08-11 | 江阴兴澄特种钢铁有限公司 | A kind of resistance against hydrogen cracking steel plate of pressure vessel and its manufacture method |
| CN105803175A (en) * | 2016-05-31 | 2016-07-27 | 江阴兴澄特种钢铁有限公司 | Low-compression-ratio ultrathick EH36 ship plate steel and preparation method thereof |
| WO2017219553A1 (en) * | 2016-06-23 | 2017-12-28 | 江阴兴澄特种钢铁有限公司 | 200 mm-thick pressure vessel steel plate resistant against hydrogen-induced cracking and manufacturing method thereof |
| CN108411196A (en) * | 2018-03-27 | 2018-08-17 | 武汉钢铁有限公司 | Tensile strength is 680MPa grades of large-scale mobile steelss for pressure vessel use and production method |
| CN108411196B (en) * | 2018-03-27 | 2019-11-26 | 武汉钢铁有限公司 | Tensile strength is 680MPa grades of large-scale mobile steelss for pressure vessel use and production method |
| CN114086083A (en) * | 2020-08-25 | 2022-02-25 | 宝山钢铁股份有限公司 | 1100 MPa-grade sulfur-resistant high-pressure gas cylinder steel, high-pressure gas cylinder and manufacturing method thereof |
| CN114086083B (en) * | 2020-08-25 | 2023-01-20 | 宝山钢铁股份有限公司 | 1100 MPa-grade sulfur-resistant high-pressure gas cylinder steel, high-pressure gas cylinder and manufacturing method thereof |
| CN114737027A (en) * | 2022-04-15 | 2022-07-12 | 首钢集团有限公司 | 345 MPa-grade container steel with excellent hydrogen induced cracking resistance and preparation method thereof |
| CN114737027B (en) * | 2022-04-15 | 2024-02-06 | 首钢集团有限公司 | 345 MPa-level container steel with excellent hydrogen induced cracking resistance and preparation method thereof |
| CN115418573A (en) * | 2022-10-09 | 2022-12-02 | 南京钢铁股份有限公司 | 80 mm-thick quenched and tempered high-toughness steel plate for pressure vessel and preparation method thereof |
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