CN102286693B - Thick ship plate steel and preparation method thereof - Google Patents
Thick ship plate steel and preparation method thereof Download PDFInfo
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Abstract
The invention provides thick ship plate steel and a preparation method thereof. The thick ship plate steel comprises the following components in percentage by weight: 0.09 to 0.14 percent of C, 0.15 to 0.40 percent of Si, 1.00 to 1.45 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.010 percent of S, 0.020 to 0.045 percent of Nb, 0.010 to 0.025 percent of Ti, 0.020 to 0.045 percent of V, 0.20 to 0.45 percent of Ni, 0.10 to 0.30 percent of Cu, 0.020 to 0.050 percent of Al and the balance of Fe and inevitable impurities. The ship plate steel produced by the method has stable performance; moreover, the production cost is low and the production efficiency is high.
Description
Technical field
The present invention relates to steel and preparation field thereof, relate in particular to a kind of thick specification ship steel and preparation method thereof.
Background technology
Ship structure steel plate is one of maximum, various in style steel grade of shipbuilding industry consumption.Along with the development of global economy, the integration process gradually deeply, the world shipping industry to be to develop rapidly, the positive increasing year by year of large-tonnage ships demand, high-level ship steel demand is more and more.It is high that ship steel has requirement, checks the characteristics such as strict, is one of high added value steel products.Each large manufacturer is put into an important position to ship steel production.
Traditional production technique is produced high-level ship steel and substantially be divided into two stage rolling in rolling, i.e. recrystallization zone rolling and the rolling of non-recrystallization district, the especially thick specification deck of boat.After needing the roughing rolling to complete, need to before finish rolling, wait the preceding paragraph time starting the finish rolling rolling, the waiting time, the purpose of wait was to have had a strong impact on rolling rhythm and production efficiency in order to eliminate interior roughing rolling basically about 1000 seconds.
Chinese invention patent CN101701326A discloses a kind of super-thick high-level boat plate steel and production technique thereof in 2010.05.05 day, relate to the thick steel of a kind of spy and heating process thereof, a kind of super-thick high-level boat plate steel and normalizing process thereof, comprise by mass percentage following component: C:0.06%～0.18%, Mn:1.00%～1.60%, P :≤0.015%, S :≤0.005%, Si :≤0.35%, Ni:0.03%～0.30%, Cr:0.03%～0.20%, Cu:0.02%～0.25%, Al:0.020%～0.050%, Nb:0.010%～0.040%, V:0.003%～0.060%, all the other are Fe content.The normalizing temperature interval is 880～940 ℃, and the soaking time interval range is 0.8H～1.5H minute, and H is steel plate thickness, and speed of cooling is 1～5 ℃/S.This invention eliminates by normalizing some that special heavy plate produces in the operation of rolling inside and outside tissue odds even, the defect such as performance inconsistency is obvious, improve quality product, the competitive power of raising product, eliminated super-thick high-level boat plate steel and organized some defects.But this steel has added the alloys such as Cr, has increased production cost, the soaking time of normalizing simultaneously is also relatively long, and production efficiency is lower.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of thick specification ship steel and preparation method thereof, has reduced production cost, has improved production efficiency.
In order to solve the prior art problem, the invention provides a kind of thick specification ship steel and preparation method thereof, by weight percentage, comprise following component: C 0.09～0.14%; Si 0.15～0.40%; Mn 1.00～1.45%; P≤0.015%; S≤0.010%; Nb 0.020～0.045%; Ti 0.010～0.025%; V 0.020～0.045%; Ni 0.20～0.45%; Cu 0.10～0.30%; Al 0.020～0.050%; And the Fe of surplus and inevitable impurity.
The present invention also provides a kind of thick specification ship steel and preparation method thereof, the steel plate that the thickness that uses above-mentioned ship steel to obtain after roughing rolling and finish rolling rolling is 40～80mm.
The present invention also provides a kind of thick specification ship steel and preparation method thereof, comprising:
A) according to component, raw material is smelted and obtained the first intermediates;
B) described the first intermediates are rolled, obtain the second intermediates;
C) described the second intermediates are obtained to deck of boat steel plate after 885～905 ℃ of lower normalizings.
Preferably, described step a) is specially:
A1) in the molten iron after desulfurization, add silicomanganese, middle manganese, aluminium manganese titanium, Nb iron to carry out converter smelting;
A2) molten steel after converter smelting is entered to refining furnace, adopt the white slag method to carry out concise, adopt ferromanganese, ferrosilicon, ferro-niobium, nickel plate alloy, titanium wire, aluminum steel to carry out trimming, obtain the first intermediate product.
Preferably, step b) be specially: the first intermediates that b1) step a) obtained after smelting carry out continuous casting;
B2) steel billet obtained after continuous casting is carried out to the roughing rolling;
B3) steel billet after the roughing rolling is carried out to the finish rolling rolling at once, obtain the second intermediates.
Preferably, the start rolling temperature of described roughing rolling is 1100～1180 ℃.
Preferably, the start rolling temperature of described finish rolling rolling is that 1080～1160 ℃, finishing temperature are 1030～1140 ℃.
Preferably, step c) be specially:
Described the second intermediates, at 885～905 ℃ of lower normalizing 20～30min, are obtained to deck of boat steel plate after cooling.
The sulphur content of the molten iron preferably, step a1) after desulfurization is less than 0.020wt%.
Preferably, also comprised before normalizing described the second intermediate product is carried out to the water-cooled operation.
The invention provides a kind of thick specification ship steel and preparation method thereof, comprise by weight percentage, comprise following component C 0.09～0.14%; Si 0.15～0.40%; Mn 1.00～1.45%; P≤0.015%; S≤0.010%; Nb 0.020～0.045%; Ti 0.010～0.025%; V 0.020～0.045%; Ni 0.20～0.45%; Cu 0.10～0.30%; Al 0.020～0.050%; ; And the Fe of surplus and inevitable impurity.Do not contain Cr in ship steel provided by the invention, reduced the cost of product.
The present invention also provides a kind of thick specification ship steel and preparation method thereof, the steel plate that the thickness that uses above-mentioned ship steel to obtain after roughing rolling and finish rolling rolling is 40～80mm.Ship steel plate thickness provided by the invention is moderate, as the deck of boat, uses anti-corrosion capability strong, owing to being soft steel, contains again the elements such as Ti, Si, Al in composition, makes steel plate light weight and intensity high.
The present invention also provides a kind of thick specification ship steel and preparation method thereof, comprising: a) according to component, raw material is smelted and obtained the first intermediates; B) described the first intermediates are rolled, obtain the second intermediates; C) described the second intermediates are obtained to deck of boat steel plate after 885～905 ℃ of lower normalizings.Preparation method provided by the invention carries out the finish rolling rolling after the roughing rolling when rolling, has saved the time at once; The soaking time of normalizing simultaneously is 20～30min, and uses prior art to want 32～120min.Improve production efficiency, reduced cost, be applicable to large-scale industrial production.
The accompanying drawing explanation
The surperficial metallographic structure figure of the ship steel that Fig. 1 embodiment of the present invention 1 provides;
The metallographic structure figure of heart section of the ship steel that Fig. 2 embodiment of the present invention 1 provides.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment, the preferred embodiments of the invention are described, but should be appreciated that these are described is the restriction for further illustrating the features and advantages of the present invention rather than patent of the present invention being required.
The invention provides a kind of thick specification ship steel and preparation method thereof, by weight percentage, comprise following component: C 0.09～0.14%; Si 0.15～0.40%; Mn 1.00～1.45%; P≤0.015%; S≤0.010%; Nb 0.020～0.045%; Ti 0.010～0.025%; V 0.020～0.045%; Ni 0.20～0.45%; Cu 0.10～0.30%; Al 0.020～0.050%; And the Fe of surplus and inevitable impurity.
The prior art of comparing, the invention provides in the ship steel component and do not contain Cr, reduced the cost of ship steel.And described ship steel is soft steel, wherein contains the elements such as Ti, Si, Al, makes steel plate light weight and intensity high.
The present invention also provides a kind of thick specification ship steel and preparation method thereof, the steel plate that the thickness that uses above-mentioned ship steel to obtain after roughing rolling and finish rolling rolling is 40～80mm.The thickness of deck of boat steel plate provided by the invention is 40～80mm, and preferably minute >=40～60mm and >=60～80mm are two kinds.
The present invention also provides a kind of thick specification ship steel and preparation method thereof, comprising:
A) according to component, raw material is smelted and obtained the first intermediates;
B) described the first intermediates are rolled, obtain the second intermediates;
C) described the second intermediates are obtained to deck of boat steel plate after 885～905 ℃ of lower normalizings.
Preparation method and the machined parameters of deck of boat steel plate provided by the invention are specially:
At first carry out hot metal pretreatment, hot metal pretreatment is in iron ladle, to adopt magnesium granule blowing to carry out desulfurizing iron, and the content of Sulfur Content in Hot Iron is controlled at below 0.020%, and temperature is not less than 1250 ℃, the complete slag that scratches clean the molten iron surface of desulfurization.
Then carry out converter smelting, pretreated molten iron enters converter smelting, and slag material adds in terminal in first 3 minutes.Terminal is controlled: C<0.10%, S<0.010%.(before converter tapping, at first at Ladle Bottom, add the 800kg synthetic slag.Adopt the deoxidation of aluminium manganese titanium, consumption 2kg/t molten steel, putting steel four/for the moment, add silicomanganese, middle manganese, aluminium manganese titanium, Nb iron, preferably go out to 3/4ths o'clock to add at molten steel.
The LF ladle refining: the molten steel after converter smelting enters refining furnace, adopts the operation of white slag method to carry out concise, and the white slag hold-time is greater than 12 minutes.Feed again 500m～700m SiCa line in molten steel after refining and carry out calcification processing, and soft blow argon gas 10～20 minutes improves Cleanliness of Molten Steel to remove being mingled with in steel.Adopt ferromanganese, ferrosilicon, ferro-niobium, nickel plate alloy to carry out trimming, guarantee that composition meets internal control; Adjusted the Ti composition with titanium wire; Adjusted the Al composition with aluminum steel.
The white slag method is mainly after the slag fusing forms, and adds the CaSi powder and makes slag have reductibility, progressively makes slag bleach.Refining slag, containing CaO>50%, in making the white slag processing, in order to accelerate the slag deoxidation, also can be taked to add appropriate aluminum shot and carry out deoxidation.The white slag slag of making is uniform vesicle end, and with slag rod dry slag, slag blanket is even, the cooling rear surface roe shape that is white in color, and section white band grey or fine rule, and loose porous, can automatic efflorescence become white powder after cooling.This is optimal white slag.White slag can effectively be removed steel inclusion.
Be more than the preparation process of ship steel, then carry out continuous casting and start to prepare deck of boat steel plate.
Continuous casting: the whole process protection cast, covering slag adopts the medium carbon steel covering slag.For guaranteeing continuous casting billet quality, reduce crackle, two cold employings are weak cold, and the specific water takes 0.9～1.2L/Kg.This steel grade contains alloy element Nb, and crack sensitivity increases, and pays special attention to the evenly cooling of strand, and the difference that the control strand goes out straightening machine width surface temperature and leptoprosopy temperature is less than 40 ℃.
Rolling: adopt Stand Mill four roll reversing rollers to carry out respectively roughing and finish rolling:
In the roughing operation, 1100～1180 ℃ of start rolling temperatures, carry out 4～7 passage rollings, as finished product thickness: >=40～60mm, workpiece thickness is finished product thickness 2.5 times; As finished product thickness: >=60～80mm, workpiece thickness is finished product thickness 2.0 times; Needless to say warm after rolling, directly enter the finish rolling milling train and be rolled;
In the finish rolling operation, after roughing finishes, directly enter the finish rolling mill milling, carry out 4～7 passage rollings, as finished product thickness: >=40～60mm, the finish rolling start rolling temperature is at 1060～1150 ℃, 1030～1120 ℃ of finishing temperatures; As finished product thickness: >=60～80mm, the finish rolling start rolling temperature is at 1080～1160 ℃, 1050～1140 ℃ of finishing temperatures;
Directly carry out water-cooled after finish rolling finishes: when finished product thickness: during >=40～60mm, opening cold temperature is 1000 ℃～1100 ℃, and final cooling temperature is 620～680 ℃, and speed of cooling is 6～8 ℃/s; As finished product thickness: >=60～80mm, opening cold temperature is 1040 ℃～1130 ℃, and final cooling temperature is 620～680 ℃, and speed of cooling is 5～7 ℃/s.
Finally heat-treat, as finished product thickness: >=40～60mm, normalizing temperature is 900 ± 5 ℃, normalizing soaking time 20min; As finished product thickness: >=60～80mm, normalizing temperature is 890 ± 5 ℃, normalizing soaking time 30min.
Ship steel of the present invention is a kind of low alloy steel, is applicable to boats and ships, offshore platform manufacture.Innovative point of the present invention has been to capture the technical barrier such as the rhythm of production of thick intensity high-toughness ship plate steel plate with a high standard is slow, mechanical property is unstable and thickness direction tissue odds is even.
High-intensity high-tenacity ship steel steel plate prepared by the present invention is got horizontal sample along head 1/2 thickness place, on the microscopic test machine of laboratory along the pre-grinding of rolling direction face, polishing, corrode and make metallographic specimen with nitric acid, in optical microphotograph Microscopic observation and mensuration grain fineness number, the steel matrix homogeneous microstructure is tiny, grain fineness number is 9 grades of left and right, V, Nb, Ti[C, N that disperse distributes] compound controls desirable; Get horizontal sample along steel plate head 1/2 thickness place and be processed into the bar-shaped sample of surveying society's requirement standard, on 100 tons of tensile testing machines, carry out tension test, steel plate stretching performance (in Table 1) is stable; On the 450J trier, to according to surveying society, requiring the impact specimen of processing to be tested, impelling strength value stabilization and surplus capacity be large (in Table 1), meets each surveying society's standard-required fully.And product Chemical Composition of the present invention is reasonable in design, controlling of production process is simple, and production efficiency is high, quality product, stable performance.
Compared with prior art beneficial effect of the present invention is as follows:
The rolling rhythm of the thick specification deck of boat of high-intensity high-tenacity of the present invention steel plate is compared and has greatly been improved production efficiency with common controlled rolling mode; More accurate C, P, S span of control is provided on Composition Design, Als also done to detailed requirement simultaneously; The STEELMAKING PRODUCTION cost of alloy is lower, and production process is stable control easily, and chemical composition is easily stable control also.This invention, owing to having added the Ni element, has good low temperature resistant toughness, and this invention makes the alloying element that steel plate needs reduce owing to adopting the fast cold mode of water to carry out further refinement steel plate crystal grain, and carbon equivalent is low, thereby improves welding property; The steel plate that this invention is produced simultaneously has good mechanical property, and its yield strength, tensile strength, unit elongation are all higher than currently available products.
Embodiment 1:80mmEH36 industry rolling
1, chemical component weight per-cent is as follows:
All the other are Fe and trace impurity for C:0.10%, Si:0.27%, Mn:1.42%, S:0.004%, P:0.011%, Nb:0.030%, Ti:0.016%, V:0.045%, Ni:0.028%, Cu:0.17, Al:0.022%.
2, the manufacture method of EH36 high-intensity high-tenacity ship steel, the technological process of production comprises hot metal pretreatment, combined blown converter smelting, LF ladle refining, soft blow argon, sheet billet continuous casting, rolling.Operation steps is as follows:
In iron ladle, adopt magnesium granule blowing to carry out desulfurizing iron, molten iron sulphur is controlled at below 0.020%, and temperature is not less than 1250 ℃, the complete slag that scratches clean the molten iron surface of desulfurization.Pretreated molten iron enters converter smelting, and slag material adds in terminal in first 3 minutes.Terminal is controlled: C:0.09%, S:0.008%.At first add the 800kg synthetic slag at Ladle Bottom before converter tapping.Adopt the deoxidation of aluminium manganese titanium, consumption 2kg/t, putting steel four/for the moment, add silicomanganese, middle manganese, aluminium manganese titanium, Nb iron, and molten steel goes out to 3/4ths o'clock to add.Molten steel after converter smelting enters concise stove, adopts the operation of white slag method to carry out concise, 14 minutes LF white slag hold-times.In molten steel after refining, feeding 550m Si～Ca line carries out calcification processing, and soft blow argon gas 14 minutes.Adopt ferromanganese, ferrosilicon, ferro-niobium, nickel plate alloy to carry out trimming, guarantee that composition meets internal control; Adjusted the Ti composition with titanium wire; Adjusted the Al composition with aluminum steel.Sheet billet continuous casting is poured into a mould by the continuous caster whole process protection.Two cold employings are weak cold, and the specific water takes 1.05L/Kg.The difference that the control strand goes out straightening machine width surface temperature and leptoprosopy temperature is less than 40 ℃.
The continuously cast bloom specification is that 300mm * 1800mm * 3200mm Finished Steel specification is: 80mm*2500mm*L
Heating temperature is 1200 ℃, 4.5 hours heat-up times.Steel billet is come out of the stove, and enters roughing mill and be rolled after pre-scale breaker de-scaling, and 1170 ℃ of start rolling temperatures, carried out 5 passage rollings, every time draft is respectively: 10.7%, 8.8%, 8.5%, 13.8%, 17.3%, total draft is 46.7%, and workpiece thickness is 160mm.Roughing is directly sent into finishing mill after finishing, and the finish rolling start rolling temperature is 1057 ℃, has carried out altogether 4 passage rollings, and every time draft is respectively: 11.4%, 11.1%, 10.7%, 10.3%, and total draft is 37.5%.After rolling finishes, steel plate carries out water-cooled, opens 1097 ℃ of cold temperature, 655 ℃ of final cooling temperatures, speed of cooling is 7.5 ℃/s, finally is transported to heat treatment department and carries out normalizing thermal treatment, normalizing temperature is 888 ℃, and the normalizing soaking time is 30 minutes, finally makes the thick high strength steel plate for ship building of 80mm.
The rigidity of this enforcement can be listed in table 1.Performance test methods adopts international method.
Embodiment 2:60mmEH36 industry rolling
1, the chemical component weight per-cent of high-intensity high-tenacity ship steel is as follows:
All the other are Fe and trace impurity for C:0.14%, Si:0.35%, Mn:1.35%, S:0.002%, P:0.008%, Nb:0.035%, Ti:0.018%, V:0.041%, Ni:0.032%, Cu:0.22, Al:0.032%.
The manufacture method of high-intensity high-tenacity ship steel, the technological process of production comprises hot metal pretreatment, combined blown converter smelting, LF ladle refining, soft blow argon, sheet billet continuous casting, rolling.Operation steps is as follows:
In iron ladle, adopt magnesium granule blowing to carry out desulfurizing iron, molten iron sulphur is controlled at below 0.01%, and temperature is not less than 1250 ℃, the complete slag that scratches clean the molten iron surface of desulfurization.Pretreated molten iron enters converter smelting, and slag material adds in terminal in first 3 minutes.Terminal control and other process are with embodiment 1.
The continuously cast bloom specification is that 300mm * 1800mm * 3200mm Finished Steel specification is: 60mm*2500mm*L
Heating temperature is 1203 ℃, 4.5 hours heat-up times.Steel billet is come out of the stove, and enters roughing mill and be rolled after pre-scale breaker de-scaling, and 1172 ℃ of start rolling temperatures, carried out 4 passage rollings, every time draft is respectively: 12.63%, 11.63%, 18.59%, 20.82%, total draft is 50%, and workpiece thickness is 150mm.Roughing is directly sent into finishing mill after finishing, and the finish rolling start rolling temperature is 1047 ℃, has carried out altogether 6 passage rollings, and every time draft is respectively: 12.79%, 14.41%, 14.56%, 14.64%, 14.41%, 13.12% total draft is 56.3%.After rolling finishes, steel plate carries out water-cooled, opens 1011 ℃ of cold temperature, 645 ℃ of final cooling temperatures, speed of cooling is 7.3 ℃/s, finally is transported to heat treatment department and carries out normalizing thermal treatment, normalizing temperature is 901 ℃, and the normalizing soaking time is 24 minutes, finally makes the thick high strength steel plate for ship building of 60mm.
The rigidity of this enforcement can be listed in table 1.Performance test methods adopts international method.
Table 1: the mechanical property of the thick high-strength ship plates of spy prepared by the embodiment of the present invention
As can be seen from the above table, the thick high-strength ship plates of spy that prepared by the present invention meets each surveying society's standard-required fully; From the thick rolling of the 60mm deadline, to recently, this rolling technology is significantly smaller than controlled rolling steel plate rolling time used, improves the rolling rhythm successful.
From metallographic structure, tissue after thermal treatment is sago cycas body+perlite, textura epidermoidea is also retaining the tissue topography after the hot rolling water-cooled, abnormal grain growth does not occur and manifests in explanation in heat treatment process, crystal grain is comparatively tiny, for intensity and the toughness that guarantees steel plate provides good organization foundation.
Above a kind of thick specification ship steel provided by the invention and preparation method thereof is described in detail; having applied specific case herein sets forth principle of the present invention and embodiment; the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (4)
1. the preparation method of a thick specification ship steel, is characterized in that, comprising:
A) raw material is smelted and obtained the first intermediates;
B) described the first intermediates are rolled, obtain the second intermediates;
C) described the second intermediates are obtained to deck of boat steel plate after 885～905 ℃ of lower normalizings;
Wherein, described step a) is specially
A1) in the molten iron after desulfurization, add silicomanganese, middle manganese, aluminium manganese titanium, Nb iron to carry out converter smelting;
A2) molten steel after converter smelting is entered to refining furnace, adopt the white slag method to carry out concise, adopt ferromanganese, ferrosilicon, ferro-niobium, nickel plate alloy, titanium wire, aluminum steel to carry out trimming, obtain the first intermediate product;
Described step b) is specially:
B1) the first intermediates that obtain after the step a) smelting are carried out to continuous casting;
B2) steel billet obtained after continuous casting is carried out to the roughing rolling; 1100～1180 ℃ of the start rolling temperatures of described roughing rolling, carry out 4～7 passage rollings, when finished product thickness is greater than 40mm～60mm, workpiece thickness is finished product thickness 2.5 times; When finished product thickness is greater than 60mm～80mm, workpiece thickness is finished product thickness 2.0 times; Needless to say warm after rolling, directly enter the finish rolling milling train and be rolled;
B3) steel billet after the roughing rolling is carried out to the finish rolling rolling at once, obtain the second intermediates; The passage of described finish rolling rolling is 4～7 roads, and when 40mm≤finished product thickness≤60mm, the finish rolling start rolling temperature is at 1060～1150 ℃, 1030～1120 ℃ of finishing temperatures; When 60mm<finished product thickness≤80mm, the finish rolling start rolling temperature is at 1080～1160 ℃, 1050～1140 ℃ of finishing temperatures;
Described raw material comprises following component:
C：0.10%～0.14%；
Si：0.27%～0.35%；
Mn：1.35%～1.42%；
S：0.002%～0.004%；
P：0.008%～0.011%；
Nb：0.030%～0.035%；
Ti：0.016%～0.018%；
V：0.041%～0.045%；
Ni:0.028% or 0.032%;
Cu：0.17%～0.22%；
Al:0.022%～0.032%; And the Fe of surplus and inevitable impurity.
2. preparation method according to claim 1, is characterized in that, step c) is specially:
Described the second intermediates, at 885～905 ℃ of lower normalizing 20～30min, are obtained to deck of boat steel plate.
3. preparation method according to claim 1, is characterized in that, step a1) in the sulphur content of molten iron after desulfurization be less than 0.020wt%.
4. preparation method according to claim 1, is characterized in that, also comprised before normalizing described the second intermediate product is carried out to the water-cooled operation.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705439A (en) * | 2009-12-18 | 2010-05-12 | 江苏省沙钢钢铁研究院有限公司 | Low-temperature high-toughness F460 grade super strength steel plate for building ship and manufacturing method thereof |
| CN101781742A (en) * | 2009-12-31 | 2010-07-21 | 江苏省沙钢钢铁研究院有限公司 | Medium-thickness ship plate steel with ultrahigh intensity and low-temperature impact toughness and manufacturing method thereof |
| CN101928885A (en) * | 2009-06-26 | 2010-12-29 | 上海梅山钢铁股份有限公司 | Hydrothion corrosion resistant pipe steel 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 |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928885A (en) * | 2009-06-26 | 2010-12-29 | 上海梅山钢铁股份有限公司 | Hydrothion corrosion resistant pipe steel and production method thereof |
| CN101705439A (en) * | 2009-12-18 | 2010-05-12 | 江苏省沙钢钢铁研究院有限公司 | Low-temperature high-toughness F460 grade super strength steel plate for building ship and manufacturing method thereof |
| CN101781742A (en) * | 2009-12-31 | 2010-07-21 | 江苏省沙钢钢铁研究院有限公司 | Medium-thickness ship plate steel with ultrahigh intensity and low-temperature impact toughness and manufacturing 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 |
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Effective date of registration: 20220610 Address after: 250000 Shuangquan Road, Gangcheng District, Jinan City, Shandong Province Patentee after: LAIGANG GROUP YINSHAN SHAPED STEEL Co.,Ltd. Address before: Friendship Street 271104 Shandong province Laiwu City Gangcheng District No. 38 Patentee before: LAIWU STEEL Group Ltd. |