CN105648329A - Control rolling and high strength ship-plate steel and producing method thereof - Google Patents
Control rolling and high strength ship-plate steel and producing method thereof Download PDFInfo
- Publication number
- CN105648329A CN105648329A CN201610134021.1A CN201610134021A CN105648329A CN 105648329 A CN105648329 A CN 105648329A CN 201610134021 A CN201610134021 A CN 201610134021A CN 105648329 A CN105648329 A CN 105648329A
- Authority
- CN
- China
- Prior art keywords
- slab
- steel
- ship
- technique
- controlled rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
Abstract
The invention belongs to the field of structural steel technology used for ship and ocean engineering, in particular to a control rolling and high strength ship-plate steel and a producing method thereof. The thickness specification of the ship-plate steel is 6-30mm. The ship-plate steel comprises the following chemical components, in percentage by mass, 0.10-0.18% of C, 0.10-0.40% of Si, 1.20-1.60% of Mn, not higher than 0.012% of P, not higher than 0.005% of S, 0.015-0.055% of Als, and 0.005-0.020% of Ti, with the balance being inevitable impurities. The method produces 355Mpa class high strength ship-plates by using Al+Ti refining grain elements, 230mm thick continuous casting slabs and control rolling processes, so that the production cost is low and the mechanical property is stable.
Description
Technical field
The invention belongs to boats and ships and ocean engineering structural steel technical field, particularly to a kind of controlled rolling high-strength ship plates and production method thereof.
Background technology
Since new century, domestic boats and ships development of manufacturing is rapid, and all position is at the forefront in the world for many years for accomplished shipbuilding, the newly amount of receiving orders, hand-held order volume, and the demand of the deck of boat is in higher level all the time.
Being affected by economic crisis in recent years, the demand of the deck of boat is reduced by shipping industry to some extent, and simultaneously that deck of boat prescription is more and more higher, the deck of boat market competition is fiercer.
In this context, the research and development of the high quality and low cost deck of boat and popularization are trends of the times.
Application number be 201010264387.3 patent application disclose a kind of controlled rolling type super-thick high-strength ship plate steel and preparation method thereof, it is characterized in that, the chemical composition mass percentage content controlling steel is: C0.11%-0.16%, Si0.30%-0.50%, Mn1.40%-1.60%, Als0.025%-0.055%, Nb0.030%-0.050%, V0.030%-0.05%, Ti0.010%-0.020%, P < 0.020%, S < 0.012%, surplus is Fe. This patent adds the V of Nb and the 0.030%-0.05% of 0.030%-0.050%, smelts and controls difficulty greatly, and cost of alloy is higher, it is difficult to adapt to the needs of current deck of boat market competition situation.
Summary of the invention
For overcoming above technical problem, the invention provides a kind of controlled rolling high-strength ship plates and production method thereof, adopting Al+Ti crystal grain thinning element, 230mm thickness continuous casting billet, controlled rolling process to produce the 355MPa grade high-strength deck of boat firm, production cost is low, stable mechanical property.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of controlled rolling high-strength ship plates, described ship steel thickness specification is 6��30mm, ship steel chemical composition mass percent is: C0.10��0.18%, Si0.10��0.40%, Mn1.20��1.60%, P��0.012%, S��0.005%, Als0.015��0.055%, Ti0.005��0.020%, surplus is Fe and inevitable impurity.
As preferably, described ship steel chemical composition mass percent is: C0.16%, Si0.25%, Mn1.51%, P0.011%, S0.004%, Als0.032%, Ti0.016%.
A kind of determination of each alloying component of controlled rolling high-strength ship plates of the present invention:
Carbon: C is the intensified element that ferrous materials is traditional, economic, and the intensity of steel, toughness, plasticity, welding etc. are of great impact.With the increase of carbon content, intensity improves, and impact flexibility is then decreased obviously, and welding performance is had a negative impact. Consider from economy and properties of product angle, it is preferable that C content controls 0.10��0.18%.
Silicon: Si is the main deoxidant element of steel-making, for reach sufficient deoxidation effect Si content should more than 0.05%, if but too high, the toughness of mother metal and welding position can be reduced. It is preferred to Si content is 0.10��0.40%.
Manganese: Mn is to ensure that the intensity of steel and the essential elements of toughness, is also good deoxidizer, but the too high meeting of Fe content causes, and Banded Structure of Steel Plate is serious, toughness reduces and the problem such as anisotropy, and the welding performance of steel plate is had a negative impact. It is preferred to Mn content is 1.2��1.60%.
Phosphorus: P is the harmful element causing the more serious segregation of steel, increases the fragility of steel, and especially black brittleness, On Impact Toughness brings adverse effect, and the P content of the present invention controls below 0.012%.
Sulfur: S remains in one of harmful element in steel, can increase the red brittleness of steel, reduces ductility and the toughness of steel, welding is also had adverse effect. The S content of the present invention controls below 0.005%.
Aluminum: Al is a kind of strong deoxidizer, and can refine the crystal grain of steel, improves steel toughness at low temperatures, but easily produces blank hot crackle during more than 0.08%, and the toughness of steel reduces simultaneously. It is preferred to Al content is 0.015��0.055%.
Titanium: Ti can not only improve the intensity of steel, crystal grain thinning, reduction aging sensitivity and cold brittleness, and a small amount of titanium can also improving welding property. Ti plays a role so that TiN form exists, and during less than 0.005%, effect is little, is easily formed bulky grain TiN and loses effect during more than 0.04%. It is preferred to Ti content is 0.005��0.020%.
A kind of production method of controlled rolling high-strength ship plates, the technological process of production is: roll off the production line stacking slow cooling �� slab cleaning �� slab of blast-melted �� molten iron pre-desulfurization �� converter smelting �� deoxidation alloying �� LF refine �� VD/RH refine �� sheet billet continuous casting �� slab reheats �� 3500 milling train controlled rollings �� steel plate air cooling �� finished product pick test �� warehouse-in, controlling described ship steel chemical composition mass percent is: C0.10��0.18%, Si0.10��0.40%, Mn1.20��1.60%, P��0.012%, S��0.005%, Als0.015��0.055%, Ti0.005��0.020%, surplus is Fe and inevitable impurity, wherein,
Described blast-melted chemical composition mass percent meets P��0.12%, Cr��0.06%;
In described molten iron pre-desulfurization technique, weight/mass percentage composition��0.003% of sulfur in desulfurized molten iron;
In described converter smelting process, smelting molten steel in 120 tons of converters, the weight/mass percentage composition of terminal C is not less than 0.05%;
In described LF refinery practice, carry out making white slag and process, it is ensured that submerged arc is respond well;
In described VD/RH refinery practice, molten steel carries out VD or RH application of vacuum, vacuum��150Pa;
In described sheet billet continuous casting technique, molten steel casting becoming 230mm heavy slab, roll off the production line stacking slow cooling, and strand low power reaches center segregation C class 1.5, center porosity 0.5;
The cleaning of described slab, slab reheat in technique, shove charge heating after slab inspection cleaning, heat time heating time 0.9��1.0min/mm;
Described 3500 milling train controlled rolling process include rough rolling step and finish rolling stage, and described rough rolling step ensures have more than 2 reduction in pass >=30mm, the thickness of workpiece thickness >=2 times finished steel plate;The described finish rolling stage ensures that finishing temperature control is at 840 �� 10 DEG C;
Described steel plate air cooling technique, has rolled rear steel plate air and has been cooled to room temperature.
As preferably, in described VD/RH refinery practice, molten steel carries out VD or RH application of vacuum, vacuum dwell time >=15min.
As preferably, in described deoxidation alloying process, argon blowing time >=10min (containing tapping argon blowing time).
As preferably, described slab rolls off the production line in stacking slow cooling technique, stacking temperature more than 650 DEG C.
As preferably, described slab rolls off the production line in stacking slow cooling technique, and slow cooling is to less than 300 DEG C.
As preferably, the cleaning of described slab, slab reheat in technique, shove charge heating, tapping temperature 1050��1150 DEG C after slab inspection cleaning.
The invention has the beneficial effects as follows: compared with documents, steel plate composition of the present invention eliminates relatively costly Nb and V, under the premise reducing production cost, but the mechanical property that fully meet each classification society standard-required suitable with the steel plate in documents has been reached: upper yield strength 360��430MPa, tensile strength 500��570MPa, elongation after fracture 24��33%, at-20 DEG C the summer than V-type impact of collision merit on average at more than 150J, Z-direction Tensile fracture shrinkage factor is on average more than 40%, and therefore the ship steel of the present invention substantially increases the market competitiveness. Production technology of the present invention adopts High Clean Steel Melts smelting technique, high-quality continuous casting billet production technology, the maximum gauge that can produce steel plate is 30mm, Al+Ti crystal grain thinning element, 230mm thickness continuous casting billet, controlled rolling process is adopted to produce 355MPa grade high-strength ship steel, the steel plate composition produced can control: N��30ppm, O��20ppm, H��1.5ppm, it is ensured that N, O, H can control at relatively low content, thus ensureing that steel plate has higher quality.
Detailed description of the invention
In order to be more fully understood that the present invention, describe technical scheme in detail with instantiation below, but the invention is not limited in this.
Embodiment 1
Process conditions according to chemical composition provided by the invention, technological process and regulation, smelting molten steel in 120 tons of converters, molten steel casting is become 230mm heavy slab, 3500mm heavy and medium plate mill rolls 6mm steel plate. Its technological process of production is:
Roll off the production line stacking slow cooling �� slab cleaning �� slab of blast-melted �� molten iron pre-desulfurization �� converter smelting �� deoxidation alloying �� LF refine �� VD/RH refine �� sheet billet continuous casting �� slab reheats �� 3500 milling train controlled rollings �� steel plate air cooling �� finished product pick test �� warehouse-in, controlling steel plate chemical composition mass percent is: C0.10��0.18%, Si0.10��0.40%, Mn1.20��1.60%, P��0.012%, S��0.005%, Als0.015��0.055%, Ti0.005��0.020%, surplus is Fe and inevitable impurity, wherein
The weight/mass percentage composition of described blast-melted middle P is 0.12%, and the weight/mass percentage composition of Cr is 0.06%;
In described molten iron pre-desulfurization technique, in desulfurized molten iron, the weight/mass percentage composition of sulfur is 0.003%;
In described converter smelting process, smelting molten steel in 120 tons of converters, the weight/mass percentage composition of terminal C is 0.05%;
In described deoxidation alloying process, argon blowing time is 10min (containing tapping argon blowing time);
In described LF refinery practice, carry out making white slag and process, it is ensured that submerged arc is respond well;
In described VD/RH refinery practice, molten steel carries out VD or RH application of vacuum, and vacuum is 140Pa, and the vacuum dwell time is 16min;
In described sheet billet continuous casting technique, molten steel casting becoming 230mm heavy slab, roll off the production line stacking slow cooling, and strand low power reaches center segregation C class 1.5, center porosity 0.5;
Described slab rolls off the production line in stacking slow cooling technique, stacking temperature 650 DEG C, and slow cooling is to less than 300 DEG C;
The cleaning of described slab, slab reheat in technique, shove charge heating after slab inspection cleaning, heat time heating time 0.9min/mm �� 230mm=3.5 hour, tapping temperature 1100 DEG C;
Described 3500 milling train controlled rolling process include rough rolling step and finish rolling stage, and described rough rolling step ensures have more than 2 reduction in pass >=30mm, the thickness of workpiece thickness >=2 times finished steel plate; The described finish rolling stage ensures that finishing temperature control is at 845 DEG C;
Described steel plate air cooling technique, has rolled rear steel plate air and has been cooled to room temperature.
The chemical composition mass percent of steel plate is: C0.16%, Si0.25%, Mn1.51%, P0.011%, S0.004%, Als0.032%, Ti0.016%, and surplus is ferrum and inevitable impurity.
Production technology of the present invention adopts High Clean Steel Melts smelting technique, high-quality continuous casting billet production technology, the steel plate composition produced can control: N content is 30ppm, and O content is 20ppm, and H content is 1.5ppm, ensure that N, O, H can control at relatively low content, thus ensureing that steel plate has higher quality.
The behavior pattern of steel plate is in Table 1.
The behavior pattern of table 1 steel plate
As can be seen from the above table, the high-strength ship plates that prepared by the present invention fully meets each classification society standard-required.
Embodiment 2
Process conditions according to chemical composition provided by the invention, technological process and regulation, smelting molten steel in 120 tons of converters, molten steel casting is become 230mm heavy slab, 3500mm heavy and medium plate mill rolls 30mm steel plate. Its technological process of production is:
Roll off the production line stacking slow cooling �� slab cleaning �� slab of blast-melted �� molten iron pre-desulfurization �� converter smelting �� deoxidation alloying �� LF refine �� VD/RH refine �� sheet billet continuous casting �� slab reheats �� 3500 milling train controlled rollings �� steel plate air cooling �� finished product pick test �� warehouse-in, controlling steel plate chemical composition mass percent is: C0.10��0.18%, Si0.10��0.40%, Mn1.20��1.60%, P��0.012%, S��0.005%, Als0.015��0.055%, Ti0.005��0.020%, surplus is Fe and inevitable impurity, wherein
The weight/mass percentage composition of described blast-melted middle P is 0.11%, and the weight/mass percentage composition of Cr is 0.05%;
In described molten iron pre-desulfurization technique, in desulfurized molten iron, the weight/mass percentage composition of sulfur is 0.003%;
In described converter smelting process, smelting molten steel in 120 tons of converters, the weight/mass percentage composition of terminal C is 0.06%;
In described deoxidation alloying process, argon blowing time is 15min (containing tapping argon blowing time);
In described LF refinery practice, carry out making white slag and process, it is ensured that submerged arc is respond well;
In described VD/RH refinery practice, molten steel carries out VD or RH application of vacuum, and vacuum is 150Pa, and the vacuum dwell time is 15min;
In described sheet billet continuous casting technique, molten steel casting becoming 230mm heavy slab, roll off the production line stacking slow cooling, and strand low power reaches center segregation C class 1.5, center porosity 0.5;
Described slab rolls off the production line in stacking slow cooling technique, stacking temperature 650 DEG C, and slow cooling is to less than 300 DEG C;
The cleaning of described slab, slab reheat in technique, shove charge heating after slab inspection cleaning, heat time heating time 1.0min/mm �� 230mm=3.8 hour, tapping temperature 1050 DEG C;
Described 3500 milling train controlled rolling process include rough rolling step and finish rolling stage, and described rough rolling step ensures have more than 2 reduction in pass >=30mm, the thickness of workpiece thickness >=2 times finished steel plate; The described finish rolling stage ensures that finishing temperature control is at 840 DEG C;
Described steel plate air cooling technique, has rolled rear steel plate air and has been cooled to room temperature.
The chemical composition mass percent of steel plate is: C0.16%, Si0.25%, Mn1.51%, P0.011%, S0.004%, Als0.032%, Ti0.016%, and surplus is ferrum and inevitable impurity.
Production technology of the present invention adopts High Clean Steel Melts smelting technique, high-quality continuous casting billet production technology, the steel plate composition produced can control: N content is 30ppm, and O content is 20ppm, and H content is 1.5ppm, ensure that N, O, H can control at relatively low content, thus ensureing that steel plate has higher quality.
The behavior pattern of steel plate is in Table 2.
The behavior pattern of table 2 steel plate
As can be seen from the above table, the high-strength ship plates that prepared by the present invention fully meets each classification society standard-required.
Claims (8)
1. a controlled rolling high-strength ship plates, it is characterized in that: described ship steel thickness specification is 6 ~ 30mm, ship steel chemical composition mass percent is: C0.10 ~ 0.18%, Si0.10 ~ 0.40%, Mn1.20 ~ 1.60%, P��0.012%, S��0.005%, Als0.015 ~ 0.055%, Ti0.005 ~ 0.020%, surplus is Fe and inevitable impurity.
2. a kind of controlled rolling high-strength ship plates as claimed in claim 1, it is characterised in that: described ship steel chemical composition mass percent is: C0.16%, Si0.25%, Mn1.51%, P0.011%, S0.004%, Als0.032%, Ti0.016%.
3. the production method of a kind of controlled rolling high-strength ship plates as described in any one of claim 1 ~ 2, it is characterized in that, the technological process of production is: roll off the production line stacking slow cooling �� slab cleaning �� slab of blast-melted �� molten iron pre-desulfurization �� converter smelting �� deoxidation alloying �� LF refine �� VD/RH refine �� sheet billet continuous casting �� slab reheats �� 3500 milling train controlled rollings �� steel plate air cooling �� finished product pick test �� warehouse-in, controlling described ship steel chemical composition mass percent is: C0.10 ~ 0.18%, Si0.10 ~ 0.40%, Mn1.20 ~ 1.60%, P��0.012%, S��0.005%, Als0.015 ~ 0.055%, Ti0.005 ~ 0.020%, surplus is Fe and inevitable impurity, wherein,
Described blast-melted chemical composition mass percent meets P��0.12%, Cr��0.06%;
In described molten iron pre-desulfurization technique, weight/mass percentage composition��0.003% of sulfur in desulfurized molten iron;
In described converter smelting process, smelting molten steel in 120 tons of converters, the weight/mass percentage composition of terminal C is not less than 0.05%;
In described LF refinery practice, carry out making white slag and process, it is ensured that submerged arc is respond well;
In described VD/RH refinery practice, molten steel carries out VD or RH application of vacuum, vacuum��150Pa;
In described sheet billet continuous casting technique, molten steel casting becoming 230mm heavy slab, roll off the production line stacking slow cooling, and strand low power reaches center segregation C class 1.5, center porosity 0.5;
The cleaning of described slab, slab reheat in technique, shove charge heating after slab inspection cleaning, heat time heating time 0.9 ~ 1.0min/mm;
Described 3500 milling train controlled rolling process include rough rolling step and finish rolling stage, and described rough rolling step ensures have more than 2 reduction in pass >=30mm, the thickness of workpiece thickness >=2 times finished steel plate; The described finish rolling stage ensures that finishing temperature control is at 840 �� 10 DEG C;
Described steel plate air cooling technique, has rolled rear steel plate air and has been cooled to room temperature.
4. the production method of a kind of controlled rolling high-strength ship plates as claimed in claim 3, it is characterised in that in described VD/RH refinery practice, molten steel carries out VD or RH application of vacuum, vacuum dwell time >=15min.
5. the production method of a kind of controlled rolling high-strength ship plates as claimed in claim 3, it is characterised in that in described deoxidation alloying process, argon blowing time >=10min(is containing tapping argon blowing time).
6. the production method of a kind of controlled rolling high-strength ship plates as claimed in claim 3, it is characterised in that described slab rolls off the production line in stacking slow cooling technique, stacking temperature more than 650 DEG C.
7. the production method of a kind of controlled rolling high-strength ship plates as claimed in claim 3, it is characterised in that described slab rolls off the production line in stacking slow cooling technique, and slow cooling is to less than 300 DEG C.
8. the production method of a kind of controlled rolling high-strength ship plates as claimed in claim 3, it is characterised in that the cleaning of described slab, slab reheat in technique, shove charge heating, tapping temperature 1050 ~ 1150 DEG C after slab inspection cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134021.1A CN105648329A (en) | 2016-03-09 | 2016-03-09 | Control rolling and high strength ship-plate steel and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134021.1A CN105648329A (en) | 2016-03-09 | 2016-03-09 | Control rolling and high strength ship-plate steel and producing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105648329A true CN105648329A (en) | 2016-06-08 |
Family
ID=56493341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610134021.1A Pending CN105648329A (en) | 2016-03-09 | 2016-03-09 | Control rolling and high strength ship-plate steel and producing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105648329A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119691A (en) * | 2016-08-11 | 2016-11-16 | 山东钢铁股份有限公司 | A kind of ocean structure steel plate and manufacture method thereof |
| CN106148815A (en) * | 2016-08-30 | 2016-11-23 | 山东钢铁股份有限公司 | A kind of thin brilliant Strengthening and Toughening steel plate for L245 pipe line steel and preparation method thereof |
| CN106756542A (en) * | 2016-12-09 | 2017-05-31 | 南京钢铁股份有限公司 | A kind of low cost production thereof of high-strength shipbuilding section |
| CN108342665A (en) * | 2018-03-22 | 2018-07-31 | 武汉钢铁有限公司 | A kind of fixed marine drilling platform steel and production method |
| CN110157986A (en) * | 2019-06-14 | 2019-08-23 | 武汉钢铁集团鄂城钢铁有限责任公司 | A kind of ship steel and its manufacturing method that high nitrogen low-alloy low-temperature flexibility is strong |
| CN112126847A (en) * | 2020-07-31 | 2020-12-25 | 天津钢铁集团有限公司 | Large-thickness Q420FTE high-strength steel plate for wind tower structure and production method thereof |
| CN112779456A (en) * | 2020-12-01 | 2021-05-11 | 广西柳钢华创科技研发有限公司 | Method for manufacturing steel plate SM490B for welded structure |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294257A (en) * | 2007-04-23 | 2008-10-29 | 株式会社神户制钢所 | Rolled steel with excellent toughness of sparkling heat effect section and manufacturing method thereof |
| CN101333628A (en) * | 2008-07-29 | 2008-12-31 | 湖南华菱湘潭钢铁有限公司 | Bridge structural steel plate and producing method thereof |
| CN101397626A (en) * | 2007-12-07 | 2009-04-01 | 江苏沙钢集团有限公司 | High intensity and high-toughness hot-rolled steel sheet and method for producing the same |
| CN102251173A (en) * | 2010-05-17 | 2011-11-23 | 宝山钢铁股份有限公司 | High-strength and high-toughness steel plate for low-cost and high linear energy welding |
| CN102345061A (en) * | 2011-06-28 | 2012-02-08 | 南阳汉冶特钢有限公司 | Q690D quality structural medium steel plate and production method thereof |
| CN102433498A (en) * | 2011-06-29 | 2012-05-02 | 南阳汉冶特钢有限公司 | Q550 D high-quality structural iron medium and heavy plate and production method thereof |
| CN102766807A (en) * | 2012-07-31 | 2012-11-07 | 内蒙古包钢钢联股份有限公司 | Boron contained bainite steel plate and manufacturing method thereof |
| CN102839320A (en) * | 2011-06-24 | 2012-12-26 | 宝山钢铁股份有限公司 | High-heat input steel plate for welding and manufacturing method thereof |
| CN103725975A (en) * | 2013-12-30 | 2014-04-16 | 南阳汉冶特钢有限公司 | Novel low-cost high-strength Q500 series steel plate and production method thereof |
| CN104726772A (en) * | 2015-04-03 | 2015-06-24 | 首钢总公司 | Continuously hot-galvanized high-strength steel and production method thereof |
| CN105039866A (en) * | 2015-09-15 | 2015-11-11 | 山东钢铁股份有限公司 | 1400 MPa super-high strength alloy steel and manufacturing method thereof |
-
2016
- 2016-03-09 CN CN201610134021.1A patent/CN105648329A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294257A (en) * | 2007-04-23 | 2008-10-29 | 株式会社神户制钢所 | Rolled steel with excellent toughness of sparkling heat effect section and manufacturing method thereof |
| CN101397626A (en) * | 2007-12-07 | 2009-04-01 | 江苏沙钢集团有限公司 | High intensity and high-toughness hot-rolled steel sheet and method for producing the same |
| CN101333628A (en) * | 2008-07-29 | 2008-12-31 | 湖南华菱湘潭钢铁有限公司 | Bridge structural steel plate and producing method thereof |
| CN102251173A (en) * | 2010-05-17 | 2011-11-23 | 宝山钢铁股份有限公司 | High-strength and high-toughness steel plate for low-cost and high linear energy welding |
| CN102839320A (en) * | 2011-06-24 | 2012-12-26 | 宝山钢铁股份有限公司 | High-heat input steel plate for welding and manufacturing method thereof |
| CN102345061A (en) * | 2011-06-28 | 2012-02-08 | 南阳汉冶特钢有限公司 | Q690D quality structural medium steel plate and production method thereof |
| CN102433498A (en) * | 2011-06-29 | 2012-05-02 | 南阳汉冶特钢有限公司 | Q550 D high-quality structural iron medium and heavy plate and production method thereof |
| CN102766807A (en) * | 2012-07-31 | 2012-11-07 | 内蒙古包钢钢联股份有限公司 | Boron contained bainite steel plate and manufacturing method thereof |
| CN103725975A (en) * | 2013-12-30 | 2014-04-16 | 南阳汉冶特钢有限公司 | Novel low-cost high-strength Q500 series steel plate and production method thereof |
| CN104726772A (en) * | 2015-04-03 | 2015-06-24 | 首钢总公司 | Continuously hot-galvanized high-strength steel and production method thereof |
| CN105039866A (en) * | 2015-09-15 | 2015-11-11 | 山东钢铁股份有限公司 | 1400 MPa super-high strength alloy steel and manufacturing method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119691A (en) * | 2016-08-11 | 2016-11-16 | 山东钢铁股份有限公司 | A kind of ocean structure steel plate and manufacture method thereof |
| CN106148815A (en) * | 2016-08-30 | 2016-11-23 | 山东钢铁股份有限公司 | A kind of thin brilliant Strengthening and Toughening steel plate for L245 pipe line steel and preparation method thereof |
| CN106756542A (en) * | 2016-12-09 | 2017-05-31 | 南京钢铁股份有限公司 | A kind of low cost production thereof of high-strength shipbuilding section |
| CN108342665A (en) * | 2018-03-22 | 2018-07-31 | 武汉钢铁有限公司 | A kind of fixed marine drilling platform steel and production method |
| CN110157986A (en) * | 2019-06-14 | 2019-08-23 | 武汉钢铁集团鄂城钢铁有限责任公司 | A kind of ship steel and its manufacturing method that high nitrogen low-alloy low-temperature flexibility is strong |
| CN112126847A (en) * | 2020-07-31 | 2020-12-25 | 天津钢铁集团有限公司 | Large-thickness Q420FTE high-strength steel plate for wind tower structure and production method thereof |
| CN112779456A (en) * | 2020-12-01 | 2021-05-11 | 广西柳钢华创科技研发有限公司 | Method for manufacturing steel plate SM490B for welded structure |
| CN112779456B (en) * | 2020-12-01 | 2021-12-10 | 广西柳钢华创科技研发有限公司 | Method for manufacturing steel plate SM490B for welded structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105803330B (en) | A kind of normalizing hull structural steel and iron and preparation method thereof | |
| CN105648329A (en) | Control rolling and high strength ship-plate steel and producing method thereof | |
| CN104674117B (en) | A kind of 420MPa grades of steel plate for ocean engineering and its manufacture method | |
| CN105779865B (en) | A kind of Thin Specs steel plate for ocean engineering and preparation method thereof | |
| CN101921953A (en) | Production method of anti-corrosion and high strength ultra-thick steel plates | |
| CN103740990A (en) | Aluminum alloy strip for automobile heat insulation cover and manufacturing method thereof | |
| CN112662933A (en) | Preparation method of low-temperature impact toughness-resistant wind power steel | |
| WO2022022066A1 (en) | Steel board for polar marine engineering and preparation method therefor | |
| CN102912221A (en) | Large-thickness structural steel plate for high-rise building and production method thereof | |
| CN103695775B (en) | 345MPa level high building structure steel plate and production method thereof | |
| CN105239003A (en) | Thick gauge steel plate for offshore platform and production method of thick gauge steel plate | |
| CN107557690B (en) | The super-thick steel plate and its manufacturing method of a kind of low temperature resistant and anti-lamellar tearing | |
| WO2022022040A1 (en) | Low temperature-resistant hot-rolled h-type steel for 355mpa marine engineering and preparation method therefor | |
| WO2023097979A1 (en) | Corrosion-resistant high-strength steel sheet weldable with high heat input and used for ocean engineering, and preparation method therefor | |
| CN110607476A (en) | Manufacturing method of cold-rolled hot-galvanized high-strength structural steel with yield strength of 350MPa | |
| CN113025909A (en) | Hot-rolled pickled plate for refrigerator compressor shell and production method thereof | |
| CN106834923A (en) | A kind of big thickness ocean structure steel plate and its production method | |
| CN116791009B (en) | Large-thickness steel plate suitable for ultra-large heat input welding and production method thereof | |
| CN108796365B (en) | 360 MPa-grade high-toughness steel plate for ship structure and low-cost manufacturing method | |
| CN114622135A (en) | Micro-niobium alloyed Q355B low-alloy high-strength structural steel plate and manufacturing method thereof | |
| CN111172455B (en) | Carbon steel 45Mn hot-rolled pickled plate and production method thereof | |
| CN111286673B (en) | High-formability boron-containing steel with tensile strength of more than or equal to 320MPa and production method thereof | |
| CN113151739B (en) | 540 MPa-grade VL4-4MOD ship steel plate and manufacturing method thereof | |
| CN114875330B (en) | High-strength and high-toughness steel plate with uniform performance and excellent performance in thickness direction and production method thereof | |
| CN113174537B (en) | Large-thickness FH40 shipbuilding steel plate 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160608 |
|
| RJ01 | Rejection of invention patent application after publication |