CN102337460A - Ultrahigh-strength structural steel board for ocean engineering and production method thereof - Google Patents
Ultrahigh-strength structural steel board for ocean engineering and production method thereof Download PDFInfo
- Publication number
- CN102337460A CN102337460A CN2011103594756A CN201110359475A CN102337460A CN 102337460 A CN102337460 A CN 102337460A CN 2011103594756 A CN2011103594756 A CN 2011103594756A CN 201110359475 A CN201110359475 A CN 201110359475A CN 102337460 A CN102337460 A CN 102337460A
- Authority
- CN
- China
- Prior art keywords
- steel plate
- steel
- temperature
- rolling
- less
- 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
Images
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention relates to an ultrahigh-strength structural steel board for ocean engineering and a production method thereof, belonging to the technical field of ultrahigh-strength steel. A board blank comprises the following components: 0.05-0.13% of C, 0.1-0.4% of Si, 0.7-1.7% of Mn, 0.01-0.04% of Alt, 0.02-0.05% of Nb, 0-0.05% of V, 0.008-0.02% of Ti, 0-0.6% of Cr, 0.2-0.4% of Mo, 0.15-0.8% of Ni, 0-0.5% of Cu, 0-0.0011% of B, less than 0.01% of P, less than 0.005% of S, less than 0.0010% of O, less than 0.005% of N, less than 0.00015% of H, and the balance of Fe and inevitable impurities, wherein Nb+V+Ti is not more than 0.12%. Aiming at different thickness standards, different chemical component as well as rolling and heat treatment process parameters are adopted. The production process comprises the steps of molten iron desulfurization, converter top and bottom blowing, vacuum treatment, continuous casting, controlled rolling and controlled cooling, quenching and tempering. The steel board has the advantages that: the production cost is lower, and the comprehensive mechanical properties can meet the requirements of the steel for the ocean engineering for various mechanical properties.
Description
Technical field
The invention belongs to the ultrahigh-strength steel technical field, particularly provide a kind of superstrength offshore engineering structure with steel plate and working method thereof, the superstrength offshore engineering structure with good low-temperature flexibility, welding property and anti-lamellar tearing performance is used steel.
Background technology
Offshore engineering structure is the important ultra-large type welded steel structure of human development 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 the ocean offshore engineering structure must have HS, H.T., antifatigue, anti-lamellar tearing, good weldability and good performance index such as cold-workability with steel.This for guarantee away from the operator's on land life condition and safety, to improve offshore engineering structure significant with the work-ing life and the stand-alone development oceanic resources of steel.
Along with the raising of marine oil and gas exploration and development technique, the marine oil and gas resource exploitation is gradually to the deepwater field expansion, oil production equipment maximization, lightweight, long lifetime, removable be the inexorable trend of Future Development.Therefore, offshore engineering structure will develop to directions such as HS, thick specification, good weldability and low-temperature flexibilities with steel tomorrow requirement direction.The above steel plate of target 100mm has been widely used in the spud leg tooth bar position of SEP; And common 360MPa and 400MPa level offshore engineering structure also can not be satisfied the demand with steel, and ys 420～700MPa steel plate will become the direction of future development; Enlarging day by day of ocean exploitation zone becomes more important the low-temperature flexibility of marine steel; For guaranteeing the platform personal security; " ocean platform rules " proposes to explicitly call for to different steel plate slab heart portions or 1/3 place's low-temperature impact work; E grade steel plate demand will significantly increase, but the raising of armor plate strength and low-temperature impact work value has increased the research and development difficulty.
In addition; Oceanographic engineering is exactly not only to require broad ways and length direction that certain mechanical property is arranged with the important characteristic that steel is different from the deck of boat; And the required thickness direction has good anti-lamellar tearing performance, and general requirement Z reaches 35% to relative reduction in area; Because offshore engineering structure is a large welded structures equipment, the weld is many, and the welding property quality directly has influence on welding efficiency, and good welding property is most important with the application of steel to offshore engineering structure.Therefore, it is significant for alleviating domestic energy-intensive situation with steel to develop the thick specification offshore engineering structure of HS, H.T., good welding property and anti-lamellar tearing performance.Though industry has been developed a large amount of superstrength deck of boat steel, it is less with the steel plate of steel requirement that performances such as intensity, toughness, welding and anti-lamellar tearing all satisfy the strong maritime works of superelevation:
Publication number proposes the steel plate that a kind of ys is 550MPa for the CN101353759A patent of invention, and its low-temperature flexibility is merely-20 ℃ observed value.
Publication number is higher than 690MPa for the CN101984119A patent of invention proposes ys, and tensile strength is 770-940MPa, and-60 ℃ impact is not less than 46J; It adopts TMCP+T, TMCP+L+T, Q+T and Q+L+T explained hereafter ultra high strength ship plate; Be merely 20-50mm but its specification is thin, do not relate to anti-lamellar tearing performance and welding property, its Ni, Cu content are higher; Cost is higher, is mainly results of laboratory.
Publication number adopts TMCP explained hereafter plow-steel for the CN101418417A patent of invention, and ys is 390MPa, and tension is 510MPa, and its intensity is on the low side.
Publication number is not less than 620MPa for the CN101705434A patent of invention proposes a kind of ys, tensile strength 720-890MPa, and-60 ℃ of summers of matrix and welded heat affecting zone are than the superstrength deck of boat steel that impacts greater than 41J; But its Ni content is up to 1.6-1.8%, and Cu is 1.1-1.3%, and Mo is 0.4-0.6%; Its alloy addition level is more; Cost is higher, and antagonism lamellar tearing and the mechanical property research of slab heart portion are less, and the thickness specification is merely 32mm.
Publication number is used steel for the CN101906591A patent of invention adopts controlled rolling and controlled cooling+tempering process to produce 550MPa level offshore engineering structure; But its thinner thickness is 60mm to the maximum, and its Ni and Cu content are 0.7%; Cost is higher, sets forth few to heart portion low-temperature flexibility and welding property.
Publication number has proposed the working method of the thick E550 of a kind of 18-40mm for the CN101781742A patent of invention; Its production technique is TMCP, and its thickness is 40mm to the maximum, thinner thickness; Its final cooling temperature is 380-500 ℃; Be unfavorable for guaranteeing steel-plate shape, increased manufacture difficulty, patent does not relate to welding and anti-lamellar tearing performance.
Publication number has proposed a kind of employing TMCP explained hereafter ys 690MPa for the CN101812642A patent of invention, and tensile strength is 780MPa, and-20 ℃ of Charpy-V impact powers are greater than the steel plate of 120J, and its Charpy-V impact power is merely-20 ℃, and maximum ga(u)ge is 60mm.
The method that publication number has proposed to produce the Yield strength 700 MPa high-strength steel for the CN101538681A patent of invention, ductile-brittle transition temperature is below-60 ℃, but its thickness is 9mm.
Summary of the invention
The object of the present invention is to provide a kind of superstrength offshore engineering structure with steel plate and working method thereof; To the demand of high-grade offshore engineering structure with steel, the offshore engineering structure that the present invention adopts the technological production HS of hardening and tempering process (Q+T), H.T. on the Wide and Thick Slab production line, be prone to welding and have a good resistance lamellar tearing performance is used steel to present home market.
The superstrength offshore engineering structure of the present invention's preparation is used steel, and its chemical ingredients by mass percent is: C:0.05-0.13%, Si:0.1-0.4%, Mn:0.7-1.7%; Alt:0.01-0.04%, Nb:0.02-0.05%, V:0-0.05%, Ti:0.008-0.02%; Cr:0-0.6%, Mo:0.2-0.4%, Ni:0.15-0.8%, Cu:0-0.5%; B:0-0.0011%, P＜0.01%, S＜0.005%, O＜0.0010%; N＜0.005%, H＜0.00015%, Nb+V+Ti≤0.12%, surplus is Fe and inevitable impurity.
Continuous casting is the 250-350mm heavy slab behind the converter smelting, guarantees compression ratio 4～25, adopts wide strand to reduce broadening than (broadening is than≤1.6), and control strand macroscopic examination center segregation is lower than C class 1.0; ≤50mm steel plate does not add B;＞50mm steel plate adds the B element; Producing steel plate thickness specification is 10～80mm, and the steel plate microtexture is the tempered sorbite tissue.
The present invention adopts above-mentioned chemical ingredients steel billet; Produced ys >=550MPa through controlled rolling and controlled cooling and thermal treatment process, tensile strength >=670MPa, unit elongation >=18%; The steel plate of Charpy-V impact power average >=100J of-60 ℃, Z surpasses 35% to relative reduction in area; When weld heat input was 50kJ/cm, welding joint weld seam, welded bonds and welded bonds+2mm, welded bonds+5mm and welded bonds+20mm position low-temperature flexibility was good, and its production technique is specific as follows:
1, heating cycle: steel billet is heated to 1150～1200 ℃, heat-up time 250～400min;
2, rolling and process for cooling: for≤the 19mm steel plate, adopt general hot rolling and roll the back air cooling; For＞19mm Plate Steel, rollingly be divided into for two stages, promptly the recrystallization zone is rolling rolling with the non-recrystallization district; The recrystallization zone start rolling temperature is 980～1050 ℃, and the rolling pass draft guarantees at least two passages 20～32%, 850～910 ℃ of control non-recrystallization district start rolling temperatures; Finishing temperature is 800～840 ℃, and the centre treats that temperature thickness is controlled at 1.0～4.0 times of finished product thickness, adopts and rolls the back water-cooled; Final cooling temperature is 510～680 ℃, and speed of cooling is controlled at 6～10 ℃/s.
3, thermal treatment process: adopt modifier treatment technology, quenching temperature is 900～940 ℃, and soaking time is 15～30min, and the stage roller speed of quenching is 2m/min, improves steel plate through hardening effect; During temper, adopt different tempering temperatures and time inside furnace to the different thickness steel plate, tempering temperature is 500～660 ℃, and time inside furnace is 35～240min, guarantees that steel plate has HS and good impelling strength.
The invention has the advantages that, adopt low-carbon (LC) (C:0.05～0.13%) and low carbon equivalent, improve steel plate weldableness and low-temperature flexibility; Select heterogeneity design and cooling controlling and rolling controlling process for use to the different thickness specification, enhance productivity, reduce production costs; For guaranteeing steel-plate shape, adopt rational cooling controlling and rolling controlling process; Strict control blank internal soundness reduces S, P content, and control strand macroscopic examination center segregation is lower than C class 1.0, guarantees anti-lamellar tearing performance of steel plate and low-temperature flexibility; Adopt wide strand to improve vertical rolling sequence compression ratio, guarantee two passage draught at least greater than 20%, improve low-temperature flexibility through increasing heart portion deflection, the different thickness steel plate rationally adds the Ni element and further improves the steel plate center toughness; Utilize Nb, V, Ti microalloy element refinement steel plate crystal grain, thick steel plates increases Mo content and adds the B element and improve steel plate hardening capacity and then guarantee armor plate strength.
The steel plate cost that the present invention produces is lower; Comprehensive mechanical property satisfies oceanographic engineering with the requirement of steel to each item mechanical property: thickness range 10～80mm; Ys can be stablized and reaches >=550MPa, tensile strength >=670MPa, and-60 ℃ of equal value stabilizations of low-temperature impact work reach >=100J; Z to relative reduction in area greater than 35%, can satisfy offshore engineering structure with steel to intensity, low-temperature impact, welding property and anti-lamellar tearing performance requriements.
Description of drawings
Fig. 1 is the reduction schedule figure of 12mm steel plate.
Fig. 2 is the surperficial micro-organization chart in 12mm Plate Steel transverse section.
Fig. 3 is the micro-organization chart of heart portion in 12mm Plate Steel transverse section.
Fig. 4 is the reduction schedule figure of 50mm Plate Steel.
Fig. 5 is the surperficial micro-organization chart in 50mm Plate Steel transverse section.
Fig. 6 is the micro-organization chart of heart portion in 50mm Plate Steel transverse section.
Fig. 7 is the reduction schedule figure of 80mm steel plate.
Fig. 8 is the surperficial micro-organization chart in 80mm Plate Steel transverse section.
Fig. 9 is the micro-organization chart of heart portion in 80mm Plate Steel transverse section.
Embodiment
The superstrength offshore engineering structure that present embodiment relates to uses steel thickness to be 12mm, and component that it comprises and weight percent are: C 0.054%, Si 0.18%, Mn 1.58%, P 0.008%, S0.0014%, Nb 0.048%, Ti 0.014%, Ni 0.19%, Mo 0.14% and surplus are Fe and unavoidable impurities element.According to chemical ingredients scope of the present invention, on the Wide and Thick Slab production line, having produced thickness is the steel plate of 12mm, and billet size is 250mm*1700mm*2700mm, and final dimension is 12mm*2600mm*35000mm, adopts general hot rolling, rolls the back air cooling.Thermal treatment process: quenching temperature is 930 ℃; Soaking time 15min, tempering temperature is 500 ℃, tempering stage time inside furnace is 35min; Plate property is excellent; Accompanying drawing 1 is the reduction schedule in the steel plate rolling process, and accompanying drawing 2 is the microstructure of steel plate with accompanying drawing 3, and the mechanical property of steel plate is as shown in table 3.
Table 1 embodiment 1 product mechanical property
It is good that steel plate has-60 ℃ of low temperature impact properties.
The superstrength offshore engineering structure that present embodiment relates to uses steel thickness to be 50mm, and component that it comprises and weight percent are: C 0.074%, Si 0.19%, Mn 1.56%, P 0.01%, S 0.002%, Nb 0.02%, Ti 0.014%, V0.05%, Ni 0.34%, Cu 0.21%, Mo 0.34% and surplus are Fe and unavoidable impurities element.Billet bloom size is 300mm*2000mm*2950mm, and plate size is 50mm*3000mm*11000mm, and the rolling sequence start rolling temperature is 1006 ℃, and the temperature of rerolling is 811 ℃, and finishing temperature is 803 ℃, and final cooling temperature is 515 ℃, and rolled sheet material template after aligning is good.Thermal treatment process: quenching temperature is 930 ℃, soaking time 30min, and tempering temperature is 610 ℃; Tempering stage time inside furnace is 150min; After heat treatment, plate property is excellent, and accompanying drawing 4 is the reduction schedule of 50mm Plate Steel; Accompanying drawing 5 is the microstructure of 50mm Plate Steel with accompanying drawing 6, and the mechanical property of steel plate is as shown in table 2.
Table 2 embodiment 2 product mechanical properties
50mm thickness steel plate among the embodiment 2 all has good low-temperature flexibility at 1/4 place and heart portion, and Z surpasses 35% to relative reduction in area.
The superstrength offshore engineering structure that present embodiment relates to uses steel thickness to be 80mm, and component that it comprises and weight percent are: C 0.095%, Si 0.20%, Mn 0.98%, P 0.008%, S 0.0014%, Nb 0.022%, Ti 0.013%, V 0.04%, Ni 0.69%, Cu 0.29%, Cr 0.6%, Mo 0.34%, B 0.0011%, Al 0.036% and surplus are Fe and unavoidable impurities element.Billet bloom size is 300mm*2400mm*4100mm, and plate size is 80mm*2400mm*15000mm, and start rolling temperature is 845 ℃ after the controlled rolling, and finishing temperature is 816 ℃, and final cooling temperature is 680 ℃, and speed of cooling is 6 ℃/s.Thermal treatment process: quenching temperature is 930 ℃, soaking time 30min, and tempering temperature is 660 ℃, and tempering stage time inside furnace is 240min, and after heat treatment, plate property is excellent.Accompanying drawing 7 is the reduction schedule of 80mm Plate Steel, and accompanying drawing 8 is the microstructure of 80mm Plate Steel with accompanying drawing 9, and the mechanical property of steel plate is as shown in table 3, and table 4 is the mechanical property of 50kJ/cm welding steel welding joint for heat input.
Table 3 embodiment 3 product mechanical properties
Welding joint heart portion mechanical property when table 4 heat input is 50kJ/cm
Claims (3)
1. a superstrength offshore engineering structure is used steel plate, it is characterized in that: the chemical ingredients mass percent of this steel plate is: C:0.05-0.13%, Si:0.1-0.4%, Mn:0.7-1.7%; Alt:0.01-0.04%, Nb:0.02-0.05%, V:0-0.05%, Ti:0.008-0.02%; Cr:0-0.6%, Mo:0.2-0.4%, Ni:0.15-0.8%, Cu:0-0.5%; B:0-0.0011%, P＜0.01%, S＜0.005%, 0＜0.0010%; N＜0.005%, H＜0.00015%, Nb+V+Ti≤0.12%, surplus is Fe and inevitable impurity.
2. superstrength offshore engineering structure according to claim 1 is used steel plate, it is characterized in that: control strand macroscopic examination center segregation is lower than C class 1.0; ≤50mm steel plate does not add B;＞50mm steel plate adds the B element; Producing steel plate thickness specification is 10～80mm, and the steel plate microtexture is the tempered sorbite tissue.
3. the described superstrength offshore engineering structure of claim 1 is used the steel plate working method; Production technique comprises desulfurizing iron, converter top and bottom complex blowing, vacuum-treat, continuous casting, controlled rolling and controlled cooling, quenching, tempering; It is characterized in that the technical parameter of in process step, controlling is:
(1) continuous casting is 250～350mm heavy slab behind the converter smelting, guarantees compression ratio 4～25, adopts wide strand to reduce the broadening ratio, makes broadening than≤1.6, and steel billet heats before rolling, and Heating temperature is 1150-1200 ℃, heat-up time 250～400min;
(2), adopt general hot rolling and roll the back air cooling for≤19mm steel plate;
For＞19mm Plate Steel, rollingly be divided into for two stages, promptly the recrystallization zone is rolling rolling with the non-recrystallization district; The recrystallization zone start rolling temperature is 980～1050 ℃, and the rolling pass draft guarantees at least two passages 20～32%, 850～910 ℃ of control non-recrystallization district start rolling temperatures; Finishing temperature is 800～840 ℃, and the centre treats that temperature thickness is controlled at 1.0～4.0 times of finished product thickness, adopts and rolls the back water-cooled; Final cooling temperature is 510-680 ℃, and speed of cooling is controlled at 6～10 ℃/s;
(3) adopt modifier treatment technology, quenching temperature is 900～940 ℃, and soaking time is 15～30min, and the stage roller speed of quenching is 2m/min; Tempering temperature is 500～660 ℃, and time inside furnace is 35～240min; The soaking time that picks up counting when wherein soaking time reaches target temperature for the steel plate core temperature; Time inside furnace is that steel plate gets into the time that process furnace promptly picks up counting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110359475 CN102337460B (en) | 2011-11-14 | 2011-11-14 | Ultrahigh-strength structural steel board for ocean engineering and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110359475 CN102337460B (en) | 2011-11-14 | 2011-11-14 | Ultrahigh-strength structural steel board for ocean engineering and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102337460A true CN102337460A (en) | 2012-02-01 |
| CN102337460B CN102337460B (en) | 2013-01-09 |
Family
ID=45513407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110359475 Active CN102337460B (en) | 2011-11-14 | 2011-11-14 | Ultrahigh-strength structural steel board for ocean engineering and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102337460B (en) |
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102851622A (en) * | 2012-09-19 | 2013-01-02 | 南京钢铁股份有限公司 | Superhigh-strength high-toughness steel plate for ocean engineering and production method thereof |
| CN103014541A (en) * | 2012-12-21 | 2013-04-03 | 首钢总公司 | 690MPa thick steel plate for ocean engineering and manufacturing method of steel plate |
| CN103031498A (en) * | 2012-12-17 | 2013-04-10 | 南京钢铁股份有限公司 | Manufacture method of extremely thick ocean engineering steel plate with low compression ratio and super high-strength strain age |
| CN103114251A (en) * | 2012-12-31 | 2013-05-22 | 内蒙古包钢钢联股份有限公司 | High-strength hardened and tempered steel plate for application at low temperature of -50 DEG C |
| CN103194679A (en) * | 2013-04-07 | 2013-07-10 | 南京钢铁股份有限公司 | Steel plate for structure with excellent marine atmospheric corrosion resistance and production method thereof |
| CN103725985A (en) * | 2013-12-28 | 2014-04-16 | 首钢总公司 | Ultra-high strength steel plate and production method thereof |
| CN103741079A (en) * | 2014-01-09 | 2014-04-23 | 鞍钢股份有限公司 | Ultrahigh-strength steel plate for ocean engineering and production method thereof |
| CN103741027A (en) * | 2013-12-29 | 2014-04-23 | 首钢总公司 | Ocean engineering steel with welded joint CTOD (crack tip opening displacement) greater than 0.5mm and preparation method |
| CN103866199A (en) * | 2014-03-24 | 2014-06-18 | 济钢集团有限公司 | Steel plate used for ocean energy equipment and preparation process of steel plate |
| CN103938108A (en) * | 2014-03-14 | 2014-07-23 | 济钢集团有限公司 | 460MPa-grade low-compression-ratio and high-toughness steel plate for ocean engineering, and its production method |
| CN104328354A (en) * | 2014-10-13 | 2015-02-04 | 首钢总公司 | Steel plate with multiple characteristics, high thickness and high strength, and production method thereof |
| CN104404384A (en) * | 2014-12-19 | 2015-03-11 | 山东钢铁股份有限公司 | 550 MPa-grade low-compression-ratio high-toughness steel plate for ocean engineering platform and production method |
| CN105586537A (en) * | 2016-01-16 | 2016-05-18 | 舞阳钢铁有限责任公司 | High-strength steel plate for ocean engineering and production method thereof |
| CN106191686A (en) * | 2016-07-08 | 2016-12-07 | 首钢总公司 | A kind of shipping steel of 800MPa level and preparation method thereof |
| CN107058863A (en) * | 2016-12-29 | 2017-08-18 | 山东钢铁股份有限公司 | A kind of 550MPa grades inexpensive steel plate for ocean engineering and its manufacture method |
| CN107739990A (en) * | 2017-09-12 | 2018-02-27 | 舞阳钢铁有限责任公司 | Surrender 260MPa levels sour environment military service Pipeline Steel Plate and its production method |
| CN108456822A (en) * | 2018-03-05 | 2018-08-28 | 上海大学 | A kind of ocean high-strength steel and preparation method thereof |
| CN108588569A (en) * | 2018-08-10 | 2018-09-28 | 武汉钢铁集团鄂城钢铁有限责任公司 | A kind of Marine Engineering Steel and preparation method thereof of yield strength >=450MPa |
| CN110106453A (en) * | 2019-06-01 | 2019-08-09 | 东莞市东莞理工科技创新研究院 | A kind of high tough marine settings steel plate |
| CN110423942A (en) * | 2019-08-07 | 2019-11-08 | 南京钢铁股份有限公司 | A kind of wide, think gauge midium-carbon steel plate and manufacturing method |
| CN110592469A (en) * | 2019-06-13 | 2019-12-20 | 首钢集团有限公司 | 550 MPa-grade preheating-free welding thick-specification steel plate for ocean engineering and preparation method thereof |
| CN111270144A (en) * | 2020-03-19 | 2020-06-12 | 鞍钢股份有限公司 | High-strength steel plate for pressurized water reactor nuclear power station safety shell barrel and manufacturing method thereof |
| CN111394653A (en) * | 2020-04-17 | 2020-07-10 | 南京钢铁股份有限公司 | 420MPa low-carbon easy-welding marine structural steel plate and manufacturing method thereof |
| CN111763885A (en) * | 2020-06-30 | 2020-10-13 | 南京钢铁股份有限公司 | Steel plate for ship and production method for avoiding segregation |
| CN113549846A (en) * | 2021-07-13 | 2021-10-26 | 鞍钢股份有限公司 | 550 MPa-grade marine steel with excellent low-temperature performance and manufacturing method thereof |
| CN114134407A (en) * | 2021-06-04 | 2022-03-04 | 江阴兴澄特种钢铁有限公司 | Easy-to-weld steel plate with excellent low-temperature toughness at core for volute and manufacturing method thereof |
| CN114875308A (en) * | 2022-04-08 | 2022-08-09 | 鞍钢股份有限公司 | Steel for thin-gauge high-strength nuclear reactor containment vessel and manufacturing method thereof |
| CN114892082A (en) * | 2022-04-28 | 2022-08-12 | 湖南华菱湘潭钢铁有限公司 | Large-thickness 460 MPa-grade steel plate for ocean engineering and production method thereof |
| CN114921711A (en) * | 2022-05-25 | 2022-08-19 | 湖南华菱湘潭钢铁有限公司 | Production method of Q620-level high-corrosion-resistance high-strength offshore structure steel |
| CN114959495A (en) * | 2022-06-25 | 2022-08-30 | 湖南华菱湘潭钢铁有限公司 | Marine climate resistant Q690qE bridge structural steel and production method thereof |
| CN115029633A (en) * | 2022-06-21 | 2022-09-09 | 湖南华菱湘潭钢铁有限公司 | Multi-process adaptive Q550 medium-thickness steel plate and production method thereof |
| CN115074602A (en) * | 2022-07-28 | 2022-09-20 | 湖南华菱湘潭钢铁有限公司 | Production method of quenched and tempered steel plate for Q500-grade high-corrosion-resistance high-strength offshore structure |
| CN115094218A (en) * | 2022-07-28 | 2022-09-23 | 湖南华菱湘潭钢铁有限公司 | Production method of Q550-grade high-corrosion-resistance high-strength quenched and tempered steel plate for offshore structure |
| CN115094298A (en) * | 2022-07-28 | 2022-09-23 | 湖南华菱湘潭钢铁有限公司 | Production method of 600 MPa-grade low-carbon equivalent hydroelectric steel |
| CN115141968A (en) * | 2022-07-28 | 2022-10-04 | 湖南华菱湘潭钢铁有限公司 | Production method of quenched and tempered steel plate for Q620-level high-corrosion-resistance high-strength offshore structure |
| CN115141969A (en) * | 2022-07-28 | 2022-10-04 | 湖南华菱湘潭钢铁有限公司 | Production method of 800MPa grade hydropower steel |
| CN115216609A (en) * | 2022-07-28 | 2022-10-21 | 湖南华菱湘潭钢铁有限公司 | Production method of quenched and tempered steel plate for Q460 grade high-corrosion-resistance high-strength offshore structure |
| CN115216608A (en) * | 2022-07-28 | 2022-10-21 | 湖南华菱湘潭钢铁有限公司 | Production method of Q420 grade high-corrosion-resistance high-strength quenched and tempered steel plate for offshore structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358320A (en) * | 2008-09-02 | 2009-02-04 | 首钢总公司 | Steel for controlled rolling and controlled cooling platform and production method thereof |
| CN101876032A (en) * | 2009-12-26 | 2010-11-03 | 舞阳钢铁有限责任公司 | Weather-resistance bridge high-strength steel plate 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 |
-
2011
- 2011-11-14 CN CN 201110359475 patent/CN102337460B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358320A (en) * | 2008-09-02 | 2009-02-04 | 首钢总公司 | Steel for controlled rolling and controlled cooling platform and production method thereof |
| CN101876032A (en) * | 2009-12-26 | 2010-11-03 | 舞阳钢铁有限责任公司 | Weather-resistance bridge high-strength steel plate 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 |
Non-Patent Citations (1)
| Title |
|---|
| 谢敬佩等: "《耐磨铸钢及熔炼》", 31 July 2003, 机械工业出版社 * |
Cited By (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102851622B (en) * | 2012-09-19 | 2014-07-09 | 南京钢铁股份有限公司 | Superhigh-strength high-toughness steel plate for ocean engineering and production method thereof |
| CN102851622A (en) * | 2012-09-19 | 2013-01-02 | 南京钢铁股份有限公司 | Superhigh-strength high-toughness steel plate for ocean engineering and production method thereof |
| CN103031498A (en) * | 2012-12-17 | 2013-04-10 | 南京钢铁股份有限公司 | Manufacture method of extremely thick ocean engineering steel plate with low compression ratio and super high-strength strain age |
| CN103031498B (en) * | 2012-12-17 | 2015-01-21 | 南京钢铁股份有限公司 | Manufacture method of extremely thick ocean engineering steel plate with low compression ratio and super high-strength strain age |
| CN103014541A (en) * | 2012-12-21 | 2013-04-03 | 首钢总公司 | 690MPa thick steel plate for ocean engineering and manufacturing method of steel plate |
| CN103114251A (en) * | 2012-12-31 | 2013-05-22 | 内蒙古包钢钢联股份有限公司 | High-strength hardened and tempered steel plate for application at low temperature of -50 DEG C |
| CN103194679A (en) * | 2013-04-07 | 2013-07-10 | 南京钢铁股份有限公司 | Steel plate for structure with excellent marine atmospheric corrosion resistance and production method thereof |
| CN103194679B (en) * | 2013-04-07 | 2015-01-21 | 南京钢铁股份有限公司 | Steel plate for structure with excellent marine atmospheric corrosion resistance and production method thereof |
| CN103725985A (en) * | 2013-12-28 | 2014-04-16 | 首钢总公司 | Ultra-high strength steel plate and production method thereof |
| CN103741027A (en) * | 2013-12-29 | 2014-04-23 | 首钢总公司 | Ocean engineering steel with welded joint CTOD (crack tip opening displacement) greater than 0.5mm and preparation method |
| CN103741027B (en) * | 2013-12-29 | 2015-10-28 | 首钢总公司 | Welding joint CTOD is greater than 0. 5 millimeters of oceanographic engineering steel and preparation method |
| CN103741079A (en) * | 2014-01-09 | 2014-04-23 | 鞍钢股份有限公司 | Ultrahigh-strength steel plate for ocean engineering and production method thereof |
| CN103938108B (en) * | 2014-03-14 | 2016-05-11 | 济钢集团有限公司 | A kind of 460MPa level low compression ratio high-tenacity steel plate for ocean engineering and production method |
| CN103938108A (en) * | 2014-03-14 | 2014-07-23 | 济钢集团有限公司 | 460MPa-grade low-compression-ratio and high-toughness steel plate for ocean engineering, and its production method |
| CN103866199A (en) * | 2014-03-24 | 2014-06-18 | 济钢集团有限公司 | Steel plate used for ocean energy equipment and preparation process of steel plate |
| CN104328354A (en) * | 2014-10-13 | 2015-02-04 | 首钢总公司 | Steel plate with multiple characteristics, high thickness and high strength, and production method thereof |
| CN104404384A (en) * | 2014-12-19 | 2015-03-11 | 山东钢铁股份有限公司 | 550 MPa-grade low-compression-ratio high-toughness steel plate for ocean engineering platform and production method |
| CN105586537A (en) * | 2016-01-16 | 2016-05-18 | 舞阳钢铁有限责任公司 | High-strength steel plate for ocean engineering and production method thereof |
| CN106191686A (en) * | 2016-07-08 | 2016-12-07 | 首钢总公司 | A kind of shipping steel of 800MPa level and preparation method thereof |
| CN107058863A (en) * | 2016-12-29 | 2017-08-18 | 山东钢铁股份有限公司 | A kind of 550MPa grades inexpensive steel plate for ocean engineering and its manufacture method |
| CN107739990A (en) * | 2017-09-12 | 2018-02-27 | 舞阳钢铁有限责任公司 | Surrender 260MPa levels sour environment military service Pipeline Steel Plate and its production method |
| CN108456822A (en) * | 2018-03-05 | 2018-08-28 | 上海大学 | A kind of ocean high-strength steel and preparation method thereof |
| CN108588569A (en) * | 2018-08-10 | 2018-09-28 | 武汉钢铁集团鄂城钢铁有限责任公司 | A kind of Marine Engineering Steel and preparation method thereof of yield strength >=450MPa |
| CN110106453A (en) * | 2019-06-01 | 2019-08-09 | 东莞市东莞理工科技创新研究院 | A kind of high tough marine settings steel plate |
| CN110592469A (en) * | 2019-06-13 | 2019-12-20 | 首钢集团有限公司 | 550 MPa-grade preheating-free welding thick-specification steel plate for ocean engineering and preparation method thereof |
| CN110423942A (en) * | 2019-08-07 | 2019-11-08 | 南京钢铁股份有限公司 | A kind of wide, think gauge midium-carbon steel plate and manufacturing method |
| CN111270144A (en) * | 2020-03-19 | 2020-06-12 | 鞍钢股份有限公司 | High-strength steel plate for pressurized water reactor nuclear power station safety shell barrel and manufacturing method thereof |
| CN111394653A (en) * | 2020-04-17 | 2020-07-10 | 南京钢铁股份有限公司 | 420MPa low-carbon easy-welding marine structural steel plate and manufacturing method thereof |
| CN111763885A (en) * | 2020-06-30 | 2020-10-13 | 南京钢铁股份有限公司 | Steel plate for ship and production method for avoiding segregation |
| CN114134407A (en) * | 2021-06-04 | 2022-03-04 | 江阴兴澄特种钢铁有限公司 | Easy-to-weld steel plate with excellent low-temperature toughness at core for volute and manufacturing method thereof |
| CN113549846A (en) * | 2021-07-13 | 2021-10-26 | 鞍钢股份有限公司 | 550 MPa-grade marine steel with excellent low-temperature performance and manufacturing method thereof |
| CN114875308A (en) * | 2022-04-08 | 2022-08-09 | 鞍钢股份有限公司 | Steel for thin-gauge high-strength nuclear reactor containment vessel and manufacturing method thereof |
| CN114892082A (en) * | 2022-04-28 | 2022-08-12 | 湖南华菱湘潭钢铁有限公司 | Large-thickness 460 MPa-grade steel plate for ocean engineering and production method thereof |
| CN114921711A (en) * | 2022-05-25 | 2022-08-19 | 湖南华菱湘潭钢铁有限公司 | Production method of Q620-level high-corrosion-resistance high-strength offshore structure steel |
| CN114921711B (en) * | 2022-05-25 | 2023-10-24 | 湖南华菱湘潭钢铁有限公司 | Production method of Q620-grade high-corrosion-resistance high-strength offshore structural steel |
| CN115029633A (en) * | 2022-06-21 | 2022-09-09 | 湖南华菱湘潭钢铁有限公司 | Multi-process adaptive Q550 medium-thickness steel plate and production method thereof |
| CN114959495A (en) * | 2022-06-25 | 2022-08-30 | 湖南华菱湘潭钢铁有限公司 | Marine climate resistant Q690qE bridge structural steel and production method thereof |
| CN115074602A (en) * | 2022-07-28 | 2022-09-20 | 湖南华菱湘潭钢铁有限公司 | Production method of quenched and tempered steel plate for Q500-grade high-corrosion-resistance high-strength offshore structure |
| CN115094218A (en) * | 2022-07-28 | 2022-09-23 | 湖南华菱湘潭钢铁有限公司 | Production method of Q550-grade high-corrosion-resistance high-strength quenched and tempered steel plate for offshore structure |
| CN115094298A (en) * | 2022-07-28 | 2022-09-23 | 湖南华菱湘潭钢铁有限公司 | Production method of 600 MPa-grade low-carbon equivalent hydroelectric steel |
| CN115141968A (en) * | 2022-07-28 | 2022-10-04 | 湖南华菱湘潭钢铁有限公司 | Production method of quenched and tempered steel plate for Q620-level high-corrosion-resistance high-strength offshore structure |
| CN115141969A (en) * | 2022-07-28 | 2022-10-04 | 湖南华菱湘潭钢铁有限公司 | Production method of 800MPa grade hydropower steel |
| CN115216609A (en) * | 2022-07-28 | 2022-10-21 | 湖南华菱湘潭钢铁有限公司 | Production method of quenched and tempered steel plate for Q460 grade high-corrosion-resistance high-strength offshore structure |
| CN115216608A (en) * | 2022-07-28 | 2022-10-21 | 湖南华菱湘潭钢铁有限公司 | Production method of Q420 grade high-corrosion-resistance high-strength quenched and tempered steel plate for offshore structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102337460B (en) | 2013-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102337460B (en) | Ultrahigh-strength structural steel board for ocean engineering and production method thereof | |
| CN102534383B (en) | High-tenacity steel plate for oceengineering and manufacturing method thereof | |
| CN101613828B (en) | Super-thick steel plate for low yield ratio buildings with 460 MPa grade yield strength and manufacturing method | |
| CN105463324B (en) | A kind of thick-specification high-tenacity pipe line steel and its manufacture method | |
| CN103938110B (en) | The strong super-thick steel plate of oceanographic engineering FQ70 level superelevation and manufacture method thereof | |
| CN103014541A (en) | 690MPa thick steel plate for ocean engineering and manufacturing method of steel plate | |
| CN106636961B (en) | One kind mutually strengthens easily welding steel and preparation method containing Cu nanometers | |
| WO2016045266A1 (en) | High-toughness hot-rolling high-strength steel with yield strength of 800 mpa, and preparation method thereof | |
| CN103276312B (en) | High-strength steel plate having extra thickness of 80-120mm and method for producing same from continuous casting billet | |
| CN103225047B (en) | The X80 pipeline steel of thickness >=26.5mm and production method thereof | |
| CN102400036B (en) | Twin crystal induced plasticity steel with high elongation and high hole expansion rate and manufacturing method thereof | |
| CN105803334B (en) | Tensile strength 700MPa level hot rolling Multiphase Steels and its production method | |
| CN102400054A (en) | X80 pipeline steel for straight-seam electric resistance welding pipe and method for manufacturing hot-rolled coil thereof | |
| CN103276314A (en) | X80 pipeline steel plate with low yield ratio and high toughness and manufacturing method thereof | |
| CN102877007A (en) | Steel plate for low-crack sensitivity pressure container with thickness being more than or equal to 80mm and manufacture method of steel plate | |
| CN106756612B (en) | A kind of easy laser welding hull plate steel of bainite/martensite/austenite high-ductility and manufacture method | |
| CN102691018A (en) | Low-compression ratio super-strength steel plate for ocean engineering and manufacturing method thereof | |
| CN105950984B (en) | Tensile strength 650MPa level hot rolling Multiphase Steels and its production method | |
| CN110284066B (en) | Thin-gauge low-yield-ratio pipeline steel and manufacturing method thereof | |
| CN104372257A (en) | Low-alloy high-strength middle-thickness plate capable of utilizing self-tempering waste heat to improve toughness and preparation method of low-alloy high-strength middle-thickness plate | |
| CN103451520A (en) | Q345 engineering steel and production method thereof | |
| CN102676933A (en) | Low-alloy super-strength high-toughness steel plate and production method thereof | |
| CN102304668A (en) | Preparation method of high performance ultra-thick steel plate | |
| CN103276315B (en) | 900MPa-level ultrahigh-tenacity high-toughness pipeline steel plate and manufacturing method thereof | |
| CN109112429A (en) | FH550 grade thick plate with excellent low-temperature toughness and manufacturing method thereof |
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: Capital Iron & Steel General Company |