CN102653845A - Steel plate for LPG (Liquefied Petroleum Gas) ship storage tank and production method of steel plate - Google Patents

Steel plate for LPG (Liquefied Petroleum Gas) ship storage tank and production method of steel plate Download PDF

Info

Publication number
CN102653845A
CN102653845A CN2012101217399A CN201210121739A CN102653845A CN 102653845 A CN102653845 A CN 102653845A CN 2012101217399 A CN2012101217399 A CN 2012101217399A CN 201210121739 A CN201210121739 A CN 201210121739A CN 102653845 A CN102653845 A CN 102653845A
Authority
CN
China
Prior art keywords
steel plate
storage tank
ship storage
temperature
lpg
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.)
Pending
Application number
CN2012101217399A
Other languages
Chinese (zh)
Inventor
赵文忠
庞辉勇
刘生
车金锋
莫德敏
吴涛
牛红星
张萌
王全胜
宋向前
袁忠业
吴天育
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuyang Iron and Steel Co Ltd
Hebei Iron and Steel Group Co Ltd
Original Assignee
Wuyang Iron and Steel Co Ltd
Hebei Iron and Steel Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuyang Iron and Steel Co Ltd, Hebei Iron and Steel Group Co Ltd filed Critical Wuyang Iron and Steel Co Ltd
Priority to CN2012101217399A priority Critical patent/CN102653845A/en
Publication of CN102653845A publication Critical patent/CN102653845A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a steel plate for an LPG (Liquefied Petroleum Gas) ship storage tank and a production method of the steel plate. The steel plate for the LPG ship storage tank comprises the following components in percentage by weight: 0.14-0.16% of C, 0.20-0.40% of Si, 1.05-1.10% of Mn, not more than 0.012% of P, not more than 0.005% of S, 0.30-0.35% of Cr, 0.40-0.45% of Ni, 0.25-0.30% of Mo, 0.02-0.03% of Nb, 0.035-0.040% of V, 0.01-0.02% of Ti, 0.0015-0.0020% of B, not more than 0.010% of N, not more than 0.20% of Cu, 0.02-0.05% of total Al, the balance of Fe and inevitable impurities. The production method of the steel plate comprises the following steps of: smelting; refining by an LF/VD (Ladle Furnace/Vacuum Degasser); casting; heating; rolling; cooling; thermal refining and obtaining a finished product of steel plate. The steel plate for the LPG ship storage tank has the thickness of 8-50mm, has high compactness and strength, low-temperature impact toughness and excellent lamellar tearing resistance, can satisfy the requirement of the LPG ship storage tank, and is used for storing media such as LPG.

Description

A kind of LPG ship storage tank is with steel plate and working method thereof
Technical field
The present invention relates to the smelting steel technical field, be specifically related to a kind of LPG ship storage tank with steel plate and working method thereof.
Background technology
Along with the development of the development of the national economy, market increases high-yield strength such as other hardening high-strength steel demand of 590MPa higher level day by day, and particularly industry such as LPG ship storage tank has proposed very high requirement to mechanical property, the welding property of steel plate.
LPG ship storage tank is a kind of quenching and tempering type plow-steel with steel.The right loading kind of storage tank: products such as propane, propylene, propane/butane gas mixture, normal butane, Trimethylmethane, butylene, divinyl, vinyl chloride monomer, isoprene, pentane, amylene, dme.Possible H in the goods 2S content: H 2S<10ppm.Do not load the kinds of goods that possibly produce stress corrosion, like anhydrous ammonia (NH 3) etc.
Summary of the invention
The purpose of this invention is to provide a kind of LPG ship storage tank and use steel plate, also relate to a kind of working method of this steel plate simultaneously.
In order to realize above purpose, the technical scheme that the present invention adopted is that a kind of LPG ship storage tank is made up of following components in weight percentage content with steel plate: C:0.14% ~ 0.16%, Si:0.20% ~ 0.40%, Mn:1.05% ~ 1.10%; P≤0.012%, S≤0.005%, Cr:0.30% ~ 0.35%, Ni:0.40% ~ 0.45%; Mo:0.25% ~ 0.30%, Nb:0.02% ~ 0.03%, V:0.035% ~ 0.040%, Ti:0.01% ~ 0.02%; B:0.0015% ~ 0.0020%, N≤0.010%, Cu≤0.20%, Al Always: 0.02% ~ 0.05%, surplus is Fe and unavoidable impurities.
It is 8 ~ 50mm that described LPG ship storage tank uses the thickness of steel plate.
The present invention also aims to provide the working method of a kind of LPG ship storage tank with steel plate, to obtain HS, high low-temperature flexibility, the LPG ship storage tank that anti-lamellar tearing performance is good are used steel plate.
The present invention has adopted the working method of a kind of LPG ship storage tank with steel plate, and concrete steps are following:
(1) smelts: will contain following weight percent C:0.14% ~ 0.16%, Si:0.20% ~ 0.40%, Mn:1.05% ~ 1.10%, P≤0.012%; S≤0.005%, Cr:0.30% ~ 0.35%, Ni:0.40% ~ 0.45%, Mo:0.25% ~ 0.30%; Nb:0.02% ~ 0.03%, V:0.035% ~ 0.040%, Ti:0.01% ~ 0.02%, B:0.0015% ~ 0.0020%; N≤0.010%, Cu≤0.20%, Al Always: the molten steel of 0.02% ~ 0.05% component is sent into the refining of LF refining furnace then and is adjusted composition earlier through electric arc furnace smelting, guarantees in the refining process that refining slag is white, to guarantee deoxidation effect, changes the vacuum-treat of VD vacuum degassing furnace at last over to;
(2) casting: the molten steel after the smelting is cast, and obtains strand, and said strand is a continuously cast bloom;
(3) heating: described continuously cast bloom is at the continuous oven internal heating, and maximum heating temperature is 1220 ~ 1240 ℃, and always be >=12min/mm heat-up time;
(4) rolling: adopt II type controlled rolling process, divide two stages to be rolled, the fs is the austenite recrystallization stage, and rolling temperature is 1050 ~ 1100 ℃, percentage pass reduction>=10%, and the accumulative total draft is 30 ~ 50%; Subordinate phase is the non-recrystallize stage of austenite, start rolling temperature≤920 ℃, and the accumulative total draft is 50 ~ 70%, obtains the work in-process steel plate after rolling;
(5) cooling: the work in-process steel plate adopts water-cooled, and returning red temperature is 700 ± 10 ℃;
(6) modified: adopt quenching+tempering mode to adjust, quenching temperature is 890 ± 10 ℃, soaking time 2.0min/mm, roller speed 3 ~ 7m/min; Pass through tempering after the quenching again, tempering temperature is 640 ~ 660 ℃, and soaking time is 5.5 ~ 7.5min/mm, obtains the finished product steel plate.
When refining, in molten steel, add the Al line described in the step (1), vacuum treated vacuum tightness is≤66Pa that the vacuum hold-time is 15min.
Continuous casting process is adopted in casting described in the step (2), and superheating temperature is 10 ~ 25 ℃, and throwing speed is 0.80 ~ 1.10m/min.
Quenchant described in the step (6) is a water.
LPG ship storage tank of the present invention acting as with each component in the steel plate:
C:0.14%~0.16%, carbon produces remarkably influenced to intensity, low-temperature impact toughness, the welding property of steel; Carbon content is too high, then can influence the welding property and the atmospheric corrosion resistance ability of steel, crosses the low hardening capacity that then reduces steel.
As reductive agent and reductor, combinations such as silicon and molybdenum, chromium have the erosion resistance of raising and oxidation resistant effect in steelmaking process for Si:0.20%~0.40%, silicon; When silicone content is too high, can cause the toughness of steel to descend, reduce the welding property of steel.
Mn:1.05%~1.10%, manganese is with low cost, can increase toughness, intensity and the hardness of steel, improves the hardening capacity of steel, improves the hot workability of steel; But the manganese amount is too high, then can weaken the resistance to corrosion of steel, reduces welding property.
P≤0.012%, S≤0.005%: in the ordinary course of things, p and s all is a harmful element in the steel, increases the fragility of steel; Phosphorus degenerates welding property, reduces plasticity, and cold-bending property is degenerated; Sulphur reduces the ductility and the toughness of steel, is forging and causing when rolling crackle; Therefore should reduce the content of p and s in steel as far as possible.
Ni:0.40%~0.45%, nickel can improve the intensity of steel, improves low-temperature impact toughness and reduces Cold Brittleness Transition Temperature; Nickel has higher corrosion resistance to soda acid, at high temperature has antirust and temperature capacity; Nickel can increase austenitic condensate depression, thereby thinning microstructure is obtained strengthening effect; But nickel belongs to noble metal, and consumption should be got a good trim point between performance and cost.
Cr:0.30%~0.35%, chromium can significantly improve intensity, hardness and the wear resistance of steel, but reduce plasticity and toughness simultaneously.
V:0.035%~0.040%, vanadium are the good reductors of steel; But add vanadium thinning microstructure crystal grain in the steel, improve intensity and toughness; The carbide that vanadium and carbon form can improve anti-hydrogen-type corrosion ability under HTHP.
Nb:0.020%~0.030%; The adding of niobium is in order to promote the grain refining of steel rolling microstructure; Can improve intensity and toughness simultaneously; Under the molybdenum existence condition, niobium can pass through to suppress the effective refinement microstructure of austenite recrystallization in the controlled rolling process, and improves hardening capacity through precipitation strength; Niobium can reduce the superheated susceptivity and the temper brittleness of steel; In the welding process, the alligatoring that gathers and separate out austenite crystal in the time of can hindering heating partially of niobium, boron atom, and guarantee to obtain more tiny heat affected zone tissue after the welding, improve welding property.
Ti:0.010%~0.020% can form carbon, the oxynitride particle of tiny titanium, in slab reheat process, can obtain comparatively tiny austenitic microstructure through the alligatoring that stops austenite crystal; The existence of the nitride particles of titanium can suppress the grain coarsening of welded heat affecting zone; Titanium can improve the low-temperature flexibility of matrix metal and welded heat affecting zone simultaneously, stops the disadvantageous effect of nomadic nitrogen to the hardening capacity generation of steel.
B:0.0015%~0.0020%, the boron that adds trace in the steel can improve the compactness and the hot rolling performance of steel, improves intensity.
Mo:0.25%~0.30%, in boron-containing steel, molybdenum is particularly remarkable to the influence of hardening capacity.When molybdenum and niobium add fashionablely simultaneously, molybdenum can increase the restraining effect to austenite recrystallization in the controlled rolling process, and then promotes the refinement of austenitic microstructure; But the toughness of the heat affected zone that forms when too much molybdenum can damage welding, the weldability and the cost that reduce steel are high.
Al:0.020%~0.050%, aluminium are reductors commonly used in the steel, and add a spot of aluminium in the steel, but crystal grain thinning improves impelling strength; Aluminium also has oxidation-resistance and corrosion resistance, and aluminium and chromium, silicon share, and can significantly improve the high temperature non-scale performance of steel and the ability of high-temperature corrosion resistance, but too high hot workability, welding property and the machinability that then influences steel.
Cu≤0.20%: copper has certain contribution to erosion resistance, the weathering resistance of steel plate, but also can cause the blue shortness phenomenon, carries out ceiling restriction as impurity element here, prevents that the blue shortness phenomenon from producing.
N≤0.010%: nitrogen content has the upper limit to require lower limit not limit, and under the processing unit ability, reduces as far as possible, and steel is pure to reach, the uniform purpose of mechanical property.
Dilivery state of the present invention adds tempering for quenching, adopting quenches adds the thick LPG ship storage tank of 8 ~ 50mm that tempering process produces and obviously improve with the obdurability of steel plate; Owing to adopt II type controlled rolling process, be divided into two stages to be rolled respectively, solve the mill milling insufficient pressure and the thick inequality of crystal grain, the impelling strength that cause lower phenomenon, and increased the thickness specification of steel plate.
LPG ship storage tank of the present invention has the following advantages with steel plate: (1) obdurability coupling is good, ys>=690Mpa, and tensile strength is 770 ~ 940Mpa, A>=14% ,-20 ℃ of transverse impact merit>=100J, the result is intact for cold bending test (D=3a, 180 °); (2) anti-lamellar tearing performance is good, Z>=35%; (3) steel is pure, P≤0.012%, S≤0.005%; (4) steel plate interior solid can satisfy the requirement of JB/T4730.3-2005 I level non-destructive testing standard.
Embodiment
Embodiment 1
The LPG ship storage tank of present embodiment is made up of following components in weight percentage content with steel plate: C:0.15%, Si:0.24%, Mn:1.06%, P:0.009%, S:0.003 %, Mo:0.26%, Ni:0.41%, Cr:0.32%, Nb:0.023%, Ti:0.016%, Al Always: 0.047%, V:0.039%, B:0.0019%, Cu:0.07%, N:0.0065%, surplus is Fe and inevitably is mingled with.It is 0.48% that the LPG ship storage tank of present embodiment uses the Ceq of steel plate, and the thickness of steel plate is 42mm.
The LPG ship storage tank of present embodiment is with the working method of steel plate, and concrete steps are:
(1) smelt: the molten steel that will contain above-mentioned each weight percentage Chemical Composition is smelted in 90 tons of UHP electric furnaces earlier, sends into the refining of LF refining furnace then, feeds 450 meters on Al line, and refining process guarantees that refining slag is white, to guarantee deoxidation effect; Bull ladle VD stove vacuum-treat after refining finishes, vacuum tightness is 65Pa, the hold-time is 15min;
(2) casting: the molten steel after the smelting is cast, and adopts continuous casting process, and superheating temperature is 10 ℃, and throwing speed is 1.05m/min, obtains continuously cast bloom;
(3) heating: continuously cast bloom is put into the continuous oven internal heating, and maximum heating temperature is 1240 ℃, and be 12min/mm total heat-up time;
(4) rolling: adopt II type controlled rolling process, be divided into two stages to be rolled, the fs is the austenite recrystallization stage, and rolling temperature is 1050 ℃, percentage pass reduction 10%, and the accumulative total draft is 30%; Subordinate phase is the non-recrystallize stage of austenite, and rolling temperature is 910 ℃, and the accumulative total draft is 50%, obtains the work in-process steel plate after rolling;
(5) cooling: the work in-process steel plate adopts water-cooled, and returning red temperature is 708 ℃;
(6) modified: it is modified to adopt quenching+tempering mode to carry out, and the heat-eliminating medium of quenching is a water, and quenching temperature is 890 ℃, and soaking time is 2.0min/mm, roller speed 4m/min; Pass through tempering after the quenching again, tempering temperature is 640 ℃, and soaking time is 5.5min/mm, gets the steel plate finished product.
The mechanical property of present embodiment steel plate: ys 779MPa, tensile strength 831MPa, A are 19%;-20 ℃ of ballistic work AKV (laterally) 139J, 129J, 134J, the result is intact for cold bending test (D=3a, 180 °); Z:67%, 71%, 72%.
Embodiment 2
The LPG ship storage tank of present embodiment is made up of following components in weight percentage content with steel plate: C:0.16%, Si:0.26%, Mn:1.06%, P:0.010%, S:0.002 %, Mo:0.27%, Ni:0.41%, Cr:0.32%, Nb:0.023%, Ti:0.016%, Al Always: 0.040%, V:0.038%, B:0.0019%, Cu:0.08%, N:0.0062%, surplus is Fe and inevitably is mingled with.It is 0.49% that the LPG ship storage tank of present embodiment uses the Ceq of steel plate, and the thickness of steel plate is 50mm.
The LPG ship storage tank of present embodiment is with the working method of steel plate, and concrete steps are:
(1) smelt: the molten steel that will contain above-mentioned each weight percentage Chemical Composition is smelted in 90 tons of UHP electric furnaces earlier, sends into the refining of LF refining furnace then, feeds 500 meters on Al line, and refining process guarantees that refining slag is white, to guarantee deoxidation effect; Bull ladle VD stove vacuum-treat after refining finishes, vacuum tightness is 64Pa, the hold-time is 20min;
(2) casting: the molten steel after the smelting is cast, and adopts continuous casting process, and superheating temperature is 15 ℃, and throwing speed is 1.05m/min, obtains continuously cast bloom;
(3) heating: continuously cast bloom is put into the continuous oven internal heating, and maximum heating temperature is 1240 ℃, and be 11min/mm total heat-up time;
(4) rolling: adopt II type controlled rolling process, be divided into two stages to be rolled, the fs is the austenite recrystallization stage, and rolling temperature is 1050 ℃, percentage pass reduction 10%, and the accumulative total draft is 30%; Subordinate phase is the non-recrystallize stage of austenite, and rolling temperature is 915 ℃, and the accumulative total draft is 50%, obtains the work in-process steel plate after rolling;
(5) cooling: the work in-process steel plate adopts water-cooled, and returning red temperature is 702 ℃;
(6) modified: it is modified to adopt quenching+tempering mode to carry out, and the heat-eliminating medium of quenching is a water, and quenching temperature is 890 ℃; Soaking time is 2.0min/mm, and roller speed 3m/min passes through tempering again after the quenching; Tempering temperature is 640 ℃, and soaking time is 4.5min/mm, gets the steel plate finished product.
The mechanical property of present embodiment steel plate: ys 777MPa, tensile strength 829MPa, A are 17%;-20 ℃ of ballistic work AKV (laterally) 131J, 118J, 142J, the result is intact for cold bending test (D=3a, 180 °); Z:65%, 70%, 72%.

Claims (6)

1. a LPG ship storage tank is used steel plate, it is characterized in that, is made up of following components in weight percentage content: C:0.14% ~ 0.16%, Si:0.20% ~ 0.40%, Mn:1.05% ~ 1.10%; P≤0.012%, S≤0.005%, Cr:0.30% ~ 0.35%, Ni:0.40% ~ 0.45%; Mo:0.25% ~ 0.30%, Nb:0.02% ~ 0.03%, V:0.035% ~ 0.040%, Ti:0.01% ~ 0.02%; B:0.0015% ~ 0.0020%, N≤0.010%, Cu≤0.20%, Al Always: 0.02% ~ 0.05%, surplus is Fe and unavoidable impurities.
2. LPG ship storage tank according to claim 1 is used steel plate, it is characterized in that, the thickness of described steel plate is 8 ~ 50mm.
3. a LPG ship storage tank as claimed in claim 1 is characterized in that with the working method of steel plate described concrete steps are following:
(1) smelts: will contain following weight percent C:0.14% ~ 0.16%, Si:0.20% ~ 0.40%, Mn:1.05% ~ 1.10%, P≤0.012%; S≤0.005%, Cr:0.30% ~ 0.35%, Ni:0.40% ~ 0.45%, Mo:0.25% ~ 0.30%; Nb:0.02% ~ 0.03%, V:0.035% ~ 0.040%, Ti:0.01% ~ 0.02%, B:0.0015% ~ 0.0020%; N≤0.010%, Cu≤0.20%, Al Always: the molten steel of 0.02% ~ 0.05% component is sent into the refining of LF refining furnace then and is adjusted composition earlier through electric arc furnace smelting, changes the vacuum-treat of VD vacuum degassing furnace at last over to;
(2) casting: the molten steel after the smelting is cast, and obtains strand;
(3) heating: described strand is at the continuous oven internal heating, and maximum heating temperature is 1220 ~ 1240 ℃, and always be >=12min/mm heat-up time;
(4) rolling: adopt II type controlled rolling process, divide two stages to be rolled, the fs is the austenite recrystallization stage, and rolling temperature is 1050 ~ 1100 ℃, percentage pass reduction>=10%, and the accumulative total draft is 30 ~ 50%; Subordinate phase is the non-recrystallize stage of austenite, start rolling temperature≤920 ℃, and the accumulative total draft is 50 ~ 70%, obtains the work in-process steel plate after rolling;
(5) cooling: the work in-process steel plate adopts water-cooled, and returning red temperature is 700 ± 10 ℃;
(6) modified: adopt quenching+tempering mode to adjust, quenching temperature is 890 ± 10 ℃, soaking time 2.0min/mm, roller speed 3 ~ 7m/min; Pass through tempering after the quenching again, tempering temperature is 640 ~ 660 ℃, and soaking time is 5.5 ~ 7.5min/mm, obtains the finished product steel plate.
4. LPG ship storage tank according to claim 3 is characterized in that with the working method of steel plate, when refining, in molten steel, adds the Al line described in the step (1), and vacuum treated vacuum tightness is≤66Pa that the vacuum hold-time is 15min.
5. LPG ship storage tank according to claim 3 is characterized in that with the working method of steel plate continuous casting process is adopted in the casting described in the step (2), and superheating temperature is 10 ~ 25 ℃, and throwing speed is 0.80 ~ 1.10m/min.
6. LPG ship storage tank according to claim 3 is characterized in that with the working method of steel plate the quenchant described in the step (6) is a water.
CN2012101217399A 2012-04-24 2012-04-24 Steel plate for LPG (Liquefied Petroleum Gas) ship storage tank and production method of steel plate Pending CN102653845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101217399A CN102653845A (en) 2012-04-24 2012-04-24 Steel plate for LPG (Liquefied Petroleum Gas) ship storage tank and production method of steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101217399A CN102653845A (en) 2012-04-24 2012-04-24 Steel plate for LPG (Liquefied Petroleum Gas) ship storage tank and production method of steel plate

Publications (1)

Publication Number Publication Date
CN102653845A true CN102653845A (en) 2012-09-05

Family

ID=46729574

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012101217399A Pending CN102653845A (en) 2012-04-24 2012-04-24 Steel plate for LPG (Liquefied Petroleum Gas) ship storage tank and production method of steel plate

Country Status (1)

Country Link
CN (1) CN102653845A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104131235A (en) * 2014-07-22 2014-11-05 武汉钢铁(集团)公司 LPG boat storage tank steel plate and production method thereof
CN105792982A (en) * 2013-12-06 2016-07-20 Posco公司 Welding joint having remarkable impact resistance and abrasion resistance
CN106282809A (en) * 2016-08-31 2017-01-04 广西盛隆冶金有限公司 The storage tank manufacture method of nickeliferous chromium steel
CN106350644A (en) * 2016-09-30 2017-01-25 秦皇岛首秦金属材料有限公司 Method for producing steel for storage tank by on-line quenching process
CN106636971A (en) * 2016-09-28 2017-05-10 舞阳钢铁有限责任公司 690 MPa-grade hydrogen sulfide corrosion resisting steel plate and production method thereof
CN107177795A (en) * 2017-04-21 2017-09-19 舞阳钢铁有限责任公司 A kind of high tenacity high-ductility pressure vessel storage steel plate for tanks and its production method
CN109811254A (en) * 2019-01-14 2019-05-28 舞阳钢铁有限责任公司 A kind of strong VL 890TM steel plate of superelevation and its production method
CN110172646A (en) * 2019-06-24 2019-08-27 南京钢铁股份有限公司 A kind of storage tank for ship P690QL1 steel plate and manufacturing method
CN111041385A (en) * 2019-12-25 2020-04-21 舞阳钢铁有限责任公司 SA517GrF steel plate for spent fuel storage tank and production method thereof
CN112226677A (en) * 2020-09-11 2021-01-15 南京钢铁股份有限公司 Steel for 540 MPa-grade LPG fuel tank and manufacturing method thereof
CN112226678A (en) * 2020-09-11 2021-01-15 南京钢铁股份有限公司 500MPa grade LPG fuel tank steel and manufacturing method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101451219A (en) * 2007-12-03 2009-06-10 舞阳钢铁有限责任公司 High intensity wear-resistant steel plate and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101451219A (en) * 2007-12-03 2009-06-10 舞阳钢铁有限责任公司 High intensity wear-resistant steel plate and preparation method thereof

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105792982A (en) * 2013-12-06 2016-07-20 Posco公司 Welding joint having remarkable impact resistance and abrasion resistance
CN104131235A (en) * 2014-07-22 2014-11-05 武汉钢铁(集团)公司 LPG boat storage tank steel plate and production method thereof
CN104131235B (en) * 2014-07-22 2016-06-29 武汉钢铁(集团)公司 LPG ship storage steel plate for tanks and production method thereof
CN106282809A (en) * 2016-08-31 2017-01-04 广西盛隆冶金有限公司 The storage tank manufacture method of nickeliferous chromium steel
CN106636971A (en) * 2016-09-28 2017-05-10 舞阳钢铁有限责任公司 690 MPa-grade hydrogen sulfide corrosion resisting steel plate and production method thereof
CN106350644A (en) * 2016-09-30 2017-01-25 秦皇岛首秦金属材料有限公司 Method for producing steel for storage tank by on-line quenching process
CN107177795A (en) * 2017-04-21 2017-09-19 舞阳钢铁有限责任公司 A kind of high tenacity high-ductility pressure vessel storage steel plate for tanks and its production method
CN109811254A (en) * 2019-01-14 2019-05-28 舞阳钢铁有限责任公司 A kind of strong VL 890TM steel plate of superelevation and its production method
CN110172646A (en) * 2019-06-24 2019-08-27 南京钢铁股份有限公司 A kind of storage tank for ship P690QL1 steel plate and manufacturing method
CN111041385A (en) * 2019-12-25 2020-04-21 舞阳钢铁有限责任公司 SA517GrF steel plate for spent fuel storage tank and production method thereof
CN112226677A (en) * 2020-09-11 2021-01-15 南京钢铁股份有限公司 Steel for 540 MPa-grade LPG fuel tank and manufacturing method thereof
CN112226678A (en) * 2020-09-11 2021-01-15 南京钢铁股份有限公司 500MPa grade LPG fuel tank steel and manufacturing method thereof

Similar Documents

Publication Publication Date Title
CN101451212B (en) High intensity steel plate and preparation method thereof
CN102653845A (en) Steel plate for LPG (Liquefied Petroleum Gas) ship storage tank and production method of steel plate
CN100412223C (en) Ultra-high strength steel with excellent corrosion resistance and fatigue resistance and its making process
CN107475620B (en) Low-temperature pressure container quenching and tempering type A537Cl2 steel plate and its production method
CN100372962C (en) Superhigh strength steel plate with yield strength more than 1100Mpa and method for producing same
CN103898418B (en) Large thickness Ni is low-temperature (low temperature) vessel steel plate and production method thereof
CN102400043B (en) Large-thickness steel plate for oceaneering
CN102618799B (en) High-performance quenched and tempered steel plate with 80 kg carbon equivalent and manufacturing method of high-performance quenched and tempered steel plate
CN103266278A (en) Quenching and tempering type pipe line steel plate and production method thereof
CN104131235A (en) LPG boat storage tank steel plate and production method thereof
CN101451220A (en) High-strength abrasion-proof steel plate and method for producing the same
CN102888560B (en) Large-thickness quenched and tempered high-strength steel plate for ocean engineering and production method thereof
CN104911503A (en) Extra-thick tempering EH40 steel for ocean engineering and preparation method thereof
CN101451219A (en) High intensity wear-resistant steel plate and preparation method thereof
CN102345066B (en) Steel used for pressure container and preparation method thereof
CN102181804A (en) Steel plate for Class I nuclear key equipment and manufacturing method thereof
CN102732782A (en) Production method of steel plate for heavy-gauge pressure vessel
CN102400039A (en) Slurry feed line steel with good low-temperature toughness and manufacturing method thereof
CN102876970B (en) Steel with yield strength larger than or equal to 390 MPa for high-rise buildings and production method of steel
CN103014545B (en) High-strength steel plate with 900 Mpa-level yield strength and preparation method of steel plate
CN105385951A (en) NM500 abrasion resisting steel plate with high hardness and high tenacity and production method for NM500 abrasion resisting steel plate
CN103194687A (en) Low-alloy high-strength cast steel for low temperature and preparation method thereof
CN102691018A (en) Low-compression ratio super-strength steel plate for ocean engineering and manufacturing method thereof
CN106636971A (en) 690 MPa-grade hydrogen sulfide corrosion resisting steel plate and production method thereof
CN104674110A (en) Lower temperature steel plate for pressure vessels and production 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
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20120905