CN101358320A - Steel for controlled rolling and controlled cooling platform and production method thereof - Google Patents
Steel for controlled rolling and controlled cooling platform and production method thereof Download PDFInfo
- Publication number
- CN101358320A CN101358320A CNA2008101195069A CN200810119506A CN101358320A CN 101358320 A CN101358320 A CN 101358320A CN A2008101195069 A CNA2008101195069 A CN A2008101195069A CN 200810119506 A CN200810119506 A CN 200810119506A CN 101358320 A CN101358320 A CN 101358320A
- Authority
- CN
- China
- Prior art keywords
- controlled
- percent
- steel
- temperature
- rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 43
- 239000010959 steel Substances 0.000 title claims abstract description 43
- 238000005096 rolling process Methods 0.000 title claims abstract description 40
- 238000001816 cooling Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 12
- RMLPZKRPSQVRAB-UHFFFAOYSA-N tris(3-methylphenyl) phosphate Chemical compound CC1=CC=CC(OP(=O)(OC=2C=C(C)C=CC=2)OC=2C=C(C)C=CC=2)=C1 RMLPZKRPSQVRAB-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 9
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 238000009749 continuous casting Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 241001062472 Stokellia anisodon Species 0.000 abstract description 5
- 238000007670 refining Methods 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 238000009628 steelmaking Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 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
- 230000002950 deficient Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention relates to steel used for controlled rolling and cooling offshore platform, and a production method thereof. The invention belongs to the technical field of low-alloy high-strength steel. The steel was produced through slab continuous casting and TMCP processes after steel making and refining. The components of the slab are as follows: 0.05 percent to 0.09 percent of C, 1.20 percent to 1.60 percent of Mn, 0.20 percent to 0.50 percent of Si, 0.03 percent to 0.05 percent of Nb, 0.010 percent to 0.020 percent of Ti, 0.03 percent to 0.06 percent of V, equal to or less than 0.005 percent of S, 0.020 percent to 0.040 percent of Als, equal to or less than 0.015 percent of P, and the rest are Fe and impurities. Molten steel which is smelt by the component is cast into the slab which is 220mm to 250mm thick; the ingot is put into a slap heating furnace to be heated and rolled when being discharged. The initial billet temperature for rough rolling is 1060 DEG C to 1160 DEG C, the initial billet temperature for fine rolling is 840 DEG C to 940 DEG C, and the finishing temperature is 780 DEG C to 820 DEG C; the thickness of the rolled steel sheet is 10mm to 60mm. The starting cooling temperature is 760 DEG C to 810 DEG C; the finishing cooling temperature is 550 DEG C to 650 DEG C; the cooling speed is 10 DEG C/s to 17 DEG C/s. The production method has the advantages of simplified procedures and cost saving.
Description
Technical field
The invention belongs to the Hi-Stren steel technical field, particularly a kind of steel for controlled rolling and controlled cooling platform and production method thereof are a kind of 40kg, Z35 rank TMCP (controlled rolling adds the process system of controlled chilling) ocean platform steel.
Background technology
Along with rising steadily of international petroleum price, pay close attention to oceanic resources exploitation in countries in the world, oceanology classified as one of 12 new and high technologies of country as Japan and given priority to.In view of current the pressing for of China to the energy strategy deposit, research and development have high strength, the high tenacity ocean platform Plate Steel of independent intellectual property right, for improving China's energy system, suppressing the predation of surrounding countries to China's marine site resource, the stand-alone development oceanic resources guarantee that national energy security is significant.
Ocean platform is the ultra-large type welded steel structure of exploitation oceanic resources, is applied in the severe ocean Working environment such as wave, tide, storm and cold floating ice, supports platform and drilling outfit that gross weight surpasses hundreds of tons.These use characteristic have determined ocean platform must have high strength, high tenacity, anti-lamellar tearing, good performance index such as weldability with Plate Steel, so that guarantee personnel's safety and work, living condition, the work-ing life of improving ocean platform simultaneously better.
Ocean platform uses steel with TMCP and two kinds of explained hereafter of hot rolling+thermal treatment.TMCP explained hereafter ocean platform has characteristics such as simplifying working process, save cost and delivery cycle weak point with steel, the steel plate of TMCP state delivery simultaneously can adapt to large-line energy welding requirements and few preheating or not requirement such as pre-thermo-welding, helps reducing investment outlay, improving operating efficiency in building the ocean platform process, shorten the construction period.Ocean platform is higher to every index requests such as low-temperature flexibility, anti-lamellar tearing performances with steel.The raising ocean platform is important research direction with low-temperature flexibility, the Z of steel to technical indicators such as performance and welding propertys.
Summary of the invention
The object of the present invention is to provide a kind of steel for controlled rolling and controlled cooling platform and production method thereof.Ocean platform with the subject matter that steel and production technology thereof exist is at present: life cycle of the product length, complex process, the production cost height of the delivery of (1) as-normalized condition; (2) the product alloying element content height of controlled rolling and controlled cooling state delivery, the controlled chilling effect afterwards of rolling is brought into play abundant inadequately, and production cost is higher.
For satisfying every performance requriements, adopt the composition design of low-carbon (LC)+Nb, V, Ti combined microalloying, directly utilize TMCP explained hereafter ocean platform steel, reduce cost.Low-carbon (LC) can reduce the carbon equivalent of steel, improves the low-temperature flexibility and the welding property of steel plate; Can alleviate simultaneously the defectives such as center component segregation of continuous casting steel billet, be easy to obtain the continuous casting steel billet of better quality, help guaranteeing the heart portion quality of thicker specification ocean platform with steel plate, reduce the probability that defectives such as " layering ", " different bright band " appear in steel plate tension specimen fracture, improve product percent of pass.Handle by carrying out microalloying, in conjunction with the TMCP Technology, utilize Nb delayed deformation austenite recrystallization refinement steel plate tissue, and the precipitating reinforcing effect that in the cooling control after rolling phase transition process, utilizes V to produce, improve armor plate strength, toughness and plasticity, thereby obtain good comprehensive performances.Nb, V are except playing the effect of refined crystalline strengthening and precipitation strength, still be fixation of C, the strong carbon of N interstitial atom, nitride forming element simultaneously, Ti also can play the effect of fixation of C, N interstitial atom, reduce " Ke Shi air mass ", " Shi Nuoke air mass " generation probability, improve even elimination strain aging phenomenon.TiN can effectively hinder austenite crystal and grow up when heat, can suppress microstructure coarsening in the welding process simultaneously, improves welding property.
Ocean platform of the present invention with steel composition by weight percentage is: C 0.05～0.09%, Mn 1.20～1.60%, Si 0.20～0.50%, Nb 0.03～0.05%, and Ti 0.010～0.020%, and V 0.03～0.06%, S≤0.005%, Als 0.020～0.040%, P≤0.015%, and all the other are Fe and unavoidable impurities.
The chemical ingredients of steel of the present invention also must satisfy:
Nb+V+Ti≤0.12％；
Ceq=C+Mn/6+ (Cr+Mo+V)/5+ (Ni+Cu)/15≤0.40% ("/" expression division arithmetic in the formula).
Steel plate thickness range of the present invention is 10～60mm.
The production method of steel for controlled rolling and controlled cooling platform of the present invention is: blast-melted → molten iron pre-desulfurization → converter smelting → LF+RH refining → sheet billet continuous casting → blank check → slab heating → controlled rolling → controlled chilling.
Steel of the present invention adopts sheet billet continuous casting and TMCP technology to produce; Processing step is:
(1) will smelt good molten steel casting by above chemical composition design and become 220～250mm heavy slab; With pack into bar plate heating stove heating of blank, 1120～1220 ℃ of Heating temperatures, heat-up time 3～5h; Come out of the stove then and be rolled;
(2) the roughing start rolling temperature is controlled at 1060～1160 ℃; Intermediate blank is treated temperature (it is rolling to treat that temperature is meant that slab rough rolling stops behind the certain thickness, and equitemperature drops to the process that certain value carries out finish rolling again) thickness 40～150mm; The finish rolling start rolling temperature is controlled at 840～940 ℃; Finishing temperature is controlled at 780～820 ℃;
(3) begin to cool down temperature and be controlled at 760～810 ℃; Stop cooling temperature and be controlled at 550～650 ℃; Rate of cooling is controlled at 10～17 ℃/s.
The product microtexture of explained hereafter of the present invention is ferrite+perlite, product possesses good comprehensive mechanical properties: yield strength 420～520, tensile strength reaches 545～650MPa, unit elongation reaches 22.0～31.0%,-40 ℃ of summers are more vertical on average more than the 200J, laterally more than the 180J than impact absorbing energy, on average more than 40%, cold-bending property is good to the stretching relative reduction in area for Z.
The invention has the advantages that, simplify working process, save characteristics such as cost, the welding requirements of product adaptation large-line energy and delivery cycle weak point, be applicable to large ocean engineering structure steel such as ocean platform.
Embodiment
Embodiment 1
Steel for controlled rolling and controlled cooling platform design mix by weight percentage is: C 0.085%, Mn1.42%, and Si 0.36%, and Nb 0.034%, Ti 0.012%, and V 0.066%, and S 0.003%, Als 0.030%, and P 0.010%, and all the other are Fe and unavoidable impurities.
TMCP technology comprises heating, roughing, finish rolling, cooling, is specially:
To smelt good molten steel casting by above chemical composition design and become the 250mm heavy slab; With pack into bar plate heating stove heating of blank, 1200 ℃ of Heating temperatures, heat-up time 4h; Come out of the stove then and be rolled.The roughing start rolling temperature is controlled at 1060～1120 ℃; Intermediate blank is treated temperature thickness 90mm; The finish rolling start rolling temperature is controlled at 850～870 ℃; Finishing temperature is controlled at 780～815 ℃.Begin to cool down temperature and be controlled at 770～800 ℃; Stop cooling temperature and be controlled at 580～600 ℃; Rate of cooling is controlled at 12～16 ℃/s.Product thickness is 30mm.
The product yield strength 510MPa that produces, tensile strength 600MPa, unit elongation 25%,-60 ℃ of impact of collision averages are at 225J, and the transverse impact average is at 189J, and-60 ℃ of vertical timeliness are impacted average at 114J, 55.0%, cold-bending property is good to stretching relative reduction in area average for Z.
Embodiment 2
Steel for controlled rolling and controlled cooling platform design mix by weight percentage is: C0.065%, and Mn1.31%, Si 0.39%, and Nb 0.037%, Ti 0.014%, and V 0.05%, and S 0.002%, Als 0.038%, and P 0.008%, and all the other are Fe and unavoidable impurities.
TMCP technology comprises heating, roughing, finish rolling, cooling, is specially:
To smelt good molten steel casting by above chemical composition design and become the 250mm heavy slab; With pack into bar plate heating stove heating of blank, 1180 ℃ of Heating temperatures, heat-up time 4h; Come out of the stove then and be rolled.The roughing start rolling temperature is controlled at 1070～1120 ℃; Intermediate blank is treated temperature thickness 100mm; The finish rolling start rolling temperature is controlled at 845～860 ℃; Finishing temperature is controlled at 780～805 ℃.Begin to cool down temperature and be controlled at 770～795 ℃; Stop cooling temperature and be controlled at 580～595 ℃; Rate of cooling is controlled at 11～15 ℃/s.Product thickness is 40mm.
The product yield strength 485MPa that produces, tensile strength 590MPa, unit elongation 27.5% ,-60 ℃ of impact of collision averages are at 247J, and the transverse impact average is at 184J, and-60 ℃ of vertical timeliness are impacted 187J, and 45.4%, cold-bending property is good to the relative reduction in area average for Z.
Embodiment 3
Steel for controlled rolling and controlled cooling platform design mix by weight percentage is: C0.071%, and Mn1.35%, Si 0.38%, and Nb 0.041%, Ti 0.012%, and V 0.051%, and S 0.002%, Als 0.034%, and P 0.007%, and all the other are Fe and unavoidable impurities.
TMCP technology comprises heating, roughing, finish rolling, cooling, is specially:
To smelt good molten steel casting by above chemical composition design and become the 250mm heavy slab; With pack into bar plate heating stove heating of blank, 1200 ℃ of Heating temperatures, heat-up time 4h; Come out of the stove then and be rolled.The roughing start rolling temperature is controlled at 1080～1120 ℃; Intermediate blank is treated temperature thickness 150mm; The finish rolling start rolling temperature is controlled at 840～855 ℃; Finishing temperature is controlled at 780～800 ℃.Begin to cool down temperature and be controlled at 770～790 ℃; Stop cooling temperature and be controlled at 570～590 ℃; Rate of cooling is controlled at 10～14 ℃/s.Product thickness is 60mm.
The product yield strength 465MPa that produces, tensile strength 575MPa, unit elongation 24.5% ,-40 ℃ of impact of collision averages are at 212J, and the transverse impact average is at 182J, and-40 ℃ of vertical timeliness are impacted 127J, and Z is 46.7% to relative reduction in area, cold-bending property is good.
Claims (4)
1, a kind of steel for controlled rolling and controlled cooling platform, it is characterized in that, chemical ingredients by weight percentage: C 0.05～0.09%, Mn 1.20～1.60%, Si 0.20～0.50%, Nb 0.03～0.05%, and Ti 0.010～0.020%, and V 0.03～0.06%, S≤0.005%, Als 0.020～0.040%, P≤0.015%, and all the other are Fe and unavoidable impurities.
2, according to the described steel for controlled rolling and controlled cooling platform of claim 1, it is characterized in that Ceq=C+Mn/6+ (Cr+Mo+V)/5+ (Ni+Cu)/15≤0.40%; Nb+V+Ti≤0.12%.
3, the method for the described steel for controlled rolling and controlled cooling platform of a kind of production claim 1 is characterized in that, adopts sheet billet continuous casting and TMCP technology to produce; Processing step is:
(1) good molten steel casting becomes 220～250mm heavy slab will according to chemical composition to design smelting; With pack into bar plate heating stove heating of blank, 1120～1220 ℃ of Heating temperatures, heat-up time 3～5h; Come out of the stove then and be rolled;
(2) the roughing start rolling temperature is controlled at 1060～1160 ℃; Intermediate blank is treated temperature thickness 40～150mm; The finish rolling start rolling temperature is controlled at 840～940 ℃; Finishing temperature is controlled at 780～820 ℃;
(3) begin to cool down temperature and be controlled at 760～810 ℃; Stop cooling temperature and be controlled at 550～650 ℃; Rate of cooling is controlled at 10～17 ℃/s.
4, in accordance with the method for claim 3, it is characterized in that described chemical composition design weight percent is: C 0.05～0.09%, Mn 1.20～1.60%, Si 0.20～0.50%, Nb 0.03～0.05%, and Ti 0.010～0.020%, and V 0.03～0.06%, S≤0.005%, Als 0.020～0.040%, P≤0.015%, and all the other are Fe and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101195069A CN101358320B (en) | 2008-09-02 | 2008-09-02 | Steel for controlled rolling and controlled cooling platform and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101195069A CN101358320B (en) | 2008-09-02 | 2008-09-02 | Steel for controlled rolling and controlled cooling platform and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101358320A true CN101358320A (en) | 2009-02-04 |
| CN101358320B CN101358320B (en) | 2011-07-13 |
Family
ID=40330917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101195069A Expired - Fee Related CN101358320B (en) | 2008-09-02 | 2008-09-02 | Steel for controlled rolling and controlled cooling platform and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101358320B (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775559A (en) * | 2010-03-17 | 2010-07-14 | 北京科技大学 | Easily welded high-strength-and-toughness ship plate steel and production process |
| CN101792888A (en) * | 2010-03-17 | 2010-08-04 | 首钢总公司 | High-strength weathering steel and method for producing same |
| CN101812636A (en) * | 2010-04-28 | 2010-08-25 | 南京钢铁股份有限公司 | Q390D-Z35 low-alloy high-strength plank with thickness of 75mm and manufacturing method thereof |
| CN101838770A (en) * | 2010-06-13 | 2010-09-22 | 攀钢集团钢铁钒钛股份有限公司 | High-strength steel for transmission towers and production method thereof |
| CN101845593A (en) * | 2010-05-19 | 2010-09-29 | 首钢总公司 | Steel for 20 control Cr nuclear power and production method thereof |
| CN102011050A (en) * | 2010-07-15 | 2011-04-13 | 秦皇岛首秦金属材料有限公司 | Steel for 36kg-grade ocean platform and production method thereof |
| CN102051525A (en) * | 2010-12-07 | 2011-05-11 | 秦皇岛首秦金属材料有限公司 | Method for producing steel plate used for Q420qE bridge at low cost |
| CN102337460A (en) * | 2011-11-14 | 2012-02-01 | 首钢总公司 | Ultrahigh-strength structural steel board for ocean engineering and production method thereof |
| CN102691018A (en) * | 2012-06-11 | 2012-09-26 | 南京钢铁股份有限公司 | Low-compression ratio super-strength steel plate for ocean engineering and manufacturing method thereof |
| CN102747285A (en) * | 2012-07-11 | 2012-10-24 | 秦皇岛首秦金属材料有限公司 | Ultrathick steel plate for ships and ocean platforms and production method thereof |
| CN103722023A (en) * | 2013-12-26 | 2014-04-16 | 秦皇岛首秦金属材料有限公司 | Method for controlling plate shape of TMCP (thermal mechanical control processing) high-strength ship plate |
| CN103938104A (en) * | 2014-05-12 | 2014-07-23 | 武汉钢铁(集团)公司 | Offshore drilling platform steel with fatigue strength of at least 560MPa and production method thereof |
| CN104561486A (en) * | 2015-01-22 | 2015-04-29 | 首钢总公司 | Thick hot continuous rolling steel strip with excellent ultralow temperature CTOD (China railway high speed) performance and production method thereof |
| CN104674117A (en) * | 2015-03-19 | 2015-06-03 | 山东钢铁股份有限公司 | 420 MPa grade steel plate for ocean engineering, and manufacturing method thereof |
| CN105256234A (en) * | 2015-10-29 | 2016-01-20 | 首钢总公司 | Low-carbon microalloyed steel, preparing method and application of low-carbon microalloyed steel, ventilator blade and ventilator |
| CN105779865A (en) * | 2016-05-30 | 2016-07-20 | 山东钢铁股份有限公司 | Thin gauge steel plate used for marine engineering and preparation method thereof |
| WO2022022066A1 (en) * | 2020-08-17 | 2022-02-03 | 莱芜钢铁集团银山型钢有限公司 | Steel board for polar marine engineering and preparation method therefor |
| WO2022236961A1 (en) * | 2021-05-14 | 2022-11-17 | 南京钢铁股份有限公司 | Api 2w-50 steel plate for offshore oil platform, and production method therefor |
-
2008
- 2008-09-02 CN CN2008101195069A patent/CN101358320B/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775559A (en) * | 2010-03-17 | 2010-07-14 | 北京科技大学 | Easily welded high-strength-and-toughness ship plate steel and production process |
| CN101792888A (en) * | 2010-03-17 | 2010-08-04 | 首钢总公司 | High-strength weathering steel and method for producing same |
| CN101812636A (en) * | 2010-04-28 | 2010-08-25 | 南京钢铁股份有限公司 | Q390D-Z35 low-alloy high-strength plank with thickness of 75mm and manufacturing method thereof |
| CN101845593A (en) * | 2010-05-19 | 2010-09-29 | 首钢总公司 | Steel for 20 control Cr nuclear power and production method thereof |
| CN101838770A (en) * | 2010-06-13 | 2010-09-22 | 攀钢集团钢铁钒钛股份有限公司 | High-strength steel for transmission towers and production method thereof |
| CN102011050A (en) * | 2010-07-15 | 2011-04-13 | 秦皇岛首秦金属材料有限公司 | Steel for 36kg-grade ocean platform and production method thereof |
| CN102051525A (en) * | 2010-12-07 | 2011-05-11 | 秦皇岛首秦金属材料有限公司 | Method for producing steel plate used for Q420qE bridge at low cost |
| CN102337460B (en) * | 2011-11-14 | 2013-01-09 | 首钢总公司 | Ultrahigh-strength structural steel board for ocean engineering and production method thereof |
| CN102337460A (en) * | 2011-11-14 | 2012-02-01 | 首钢总公司 | Ultrahigh-strength structural steel board for ocean engineering and production method thereof |
| CN102691018A (en) * | 2012-06-11 | 2012-09-26 | 南京钢铁股份有限公司 | Low-compression ratio super-strength steel plate for ocean engineering and manufacturing method thereof |
| CN102747285A (en) * | 2012-07-11 | 2012-10-24 | 秦皇岛首秦金属材料有限公司 | Ultrathick steel plate for ships and ocean platforms and production method thereof |
| CN103722023A (en) * | 2013-12-26 | 2014-04-16 | 秦皇岛首秦金属材料有限公司 | Method for controlling plate shape of TMCP (thermal mechanical control processing) high-strength ship plate |
| CN103722023B (en) * | 2013-12-26 | 2015-11-25 | 秦皇岛首秦金属材料有限公司 | The method of the high-strength deck of boat Strip Shape Control of a kind of TMCP |
| CN103938104B (en) * | 2014-05-12 | 2016-08-17 | 武汉钢铁(集团)公司 | The marine drilling platform steel of fatigue strength >=560MPa and production method |
| CN103938104A (en) * | 2014-05-12 | 2014-07-23 | 武汉钢铁(集团)公司 | Offshore drilling platform steel with fatigue strength of at least 560MPa and production method thereof |
| CN104561486A (en) * | 2015-01-22 | 2015-04-29 | 首钢总公司 | Thick hot continuous rolling steel strip with excellent ultralow temperature CTOD (China railway high speed) performance and production method thereof |
| CN104674117A (en) * | 2015-03-19 | 2015-06-03 | 山东钢铁股份有限公司 | 420 MPa grade steel plate for ocean engineering, and manufacturing method thereof |
| CN104674117B (en) * | 2015-03-19 | 2017-05-31 | 山东钢铁股份有限公司 | A kind of 420MPa grades of steel plate for ocean engineering and its manufacture method |
| CN105256234A (en) * | 2015-10-29 | 2016-01-20 | 首钢总公司 | Low-carbon microalloyed steel, preparing method and application of low-carbon microalloyed steel, ventilator blade and ventilator |
| CN105779865A (en) * | 2016-05-30 | 2016-07-20 | 山东钢铁股份有限公司 | Thin gauge steel plate used for marine engineering and preparation method thereof |
| WO2022022066A1 (en) * | 2020-08-17 | 2022-02-03 | 莱芜钢铁集团银山型钢有限公司 | Steel board for polar marine engineering and preparation method therefor |
| WO2022236961A1 (en) * | 2021-05-14 | 2022-11-17 | 南京钢铁股份有限公司 | Api 2w-50 steel plate for offshore oil platform, and production method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101358320B (en) | 2011-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101358320B (en) | Steel for controlled rolling and controlled cooling platform and production method thereof | |
| CN102392192B (en) | Steel plate with thickness of 80mm and low compression ratio for ocean engineering and manufacturing method thereof | |
| CN105506494B (en) | A kind of yield strength 800MPa grade high ductilities hot-rolling high-strength steel and its manufacture method | |
| CN102912221B (en) | Large-thickness structural steel plate for high-rise building and production method thereof | |
| CN106319380A (en) | Low-compression-ratio 690 MPa-grade super-thick steel plate and production method thereof | |
| CN102965574B (en) | Titanium microalloying hot-rolling thick steel plate with low yield ratio and high strength and production process of steel plate | |
| CN103014539B (en) | A kind of yield strength 700MPa grade high-strength high-tenacity steel plate and manufacture method thereof | |
| CN101787489B (en) | Easy-welding low-carbon bainitic steel and manufacturing method thereof | |
| CN102877007B (en) | Steel plate for low-crack sensitivity pressure container with thickness being more than or equal to 80mm and manufacture method of steel plate | |
| CN103031498A (en) | Manufacture method of extremely thick ocean engineering steel plate with low compression ratio and super high-strength strain age | |
| CN102345066B (en) | Steel used for pressure container and preparation method thereof | |
| CN110184525A (en) | A kind of high intensity Q500GJE quenched and tempered state steel plate for building structure and its manufacturing method | |
| CN108914006A (en) | A kind of superhigh intensity hardened and tempered steel plate that thickness directional properties are excellent and its manufacturing method | |
| CN102286701A (en) | Thick plate for ultra-high-intensity boat body structure and production method thereof | |
| CN107604248B (en) | A kind of high intensity Q500GJD quenched and tempered state steel plate for building structure and its manufacturing method | |
| CN103014545B (en) | High-strength steel plate with 900 Mpa-level yield strength and preparation method of steel plate | |
| CN102011047A (en) | Production method of steel plate for pressure vessel with low cost and high performance | |
| CN103276312A (en) | High-strength steel plate having extra thickness of 80-120mm and method for producing same from continuous casting billet | |
| CN108374122A (en) | A kind of solderable structure in sea S460G2+M steel plates and its production method | |
| CN104561824A (en) | Steel for nuclear-grade equipment support and manufacturing method thereof | |
| CN105908086A (en) | Extremely-thick low-alloy steel plate with low compression ratio and preparation method thereof | |
| CN102888560A (en) | Large-thickness quenched and tempered high-strength steel plate for ocean engineering and production method thereof | |
| CN102851589A (en) | Steel for low temperature structure with low yield ratio and capable of performing ultrahigh heat input and manufacture method thereof | |
| CN102876997B (en) | Easy-welding tempering high-strength steel plate for ocean platform and production method thereof | |
| CN104073731B (en) | Method for producing ultrahigh-strength ship plate by adopting direct quenching process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Co-patentee after: QINHUANGDAO SHOUQIN METAL MATERIAL Co.,Ltd. Patentee after: SHOUGANG GROUP Co.,Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Co-patentee before: QINHUANGDAO SHOUQIN METAL MATERIAL Co.,Ltd. Patentee before: SHOUGANG Corp. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190410 Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: SHOUGANG GROUP Co.,Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Co-patentee before: QINHUANGDAO SHOUQIN METAL MATERIAL Co.,Ltd. Patentee before: SHOUGANG GROUP Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110713 |