CN105441793A - High-strength carbon manganese steel plate for extra-wide tank car and production method of steel plate - Google Patents
High-strength carbon manganese steel plate for extra-wide tank car and production method of steel plate Download PDFInfo
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- CN105441793A CN105441793A CN201510848836.1A CN201510848836A CN105441793A CN 105441793 A CN105441793 A CN 105441793A CN 201510848836 A CN201510848836 A CN 201510848836A CN 105441793 A CN105441793 A CN 105441793A
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- 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
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
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- 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
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- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- 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
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- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a high-strength carbon manganese steel plate for an extra-wide tank car and a production method of the steel plate. The steel plate is composed of chemical components including, by weight percent, 0.15% to 0.24% of C, 0.15% of 0.40% of Si, 1.00% to 1.65% of Mn, not larger than 0.025% of P, not larger than 0.015% of S, 0.015% to 0.020% of Nb, 0.15% of 0.35% of Cu, not larger than 0.020% of Ti, not larger than 0.0005% of B, not larger than 0.010% of N, 0.015% to 0.060% of Al, 0.065% to 0.080% of V, and not larger than 0.53% of Ceq. The production method of the steel plate comprises the procedures of smelting, heating, rolling and heat treatment. The steel plate produced with the method has the beneficial effects of being high in purity, uniform in component and compact in interior; and the mechanical property is even, the steel plate completely meets the standard requirement, and the steel plate is suitable for manufacturing a head sealing plate of the oil tank car.
Description
Technical field
The invention belongs to metallurgical technology field, be specifically related to a kind of extra wide tank car high strength carbon manganese steel plate and production method thereof.
Background technology
High strength carbon manganese steel plate is mainly used in the industries such as pressurized vessel, track traffic, metal products, machinofacture, and compared with other materials, have very high cost performance, although have producer to produce abroad, price is high, delivery date is long.
High strength carbon manganese steel plate is used as head plate, higher requirement is had to the performance of steel plate, particularly widen tank automobile steel sheet head plate, this steel plate is as trough truck head plate, demand fulfillment low-temperature high-strength can weld the requirement of pressure vessel steel, but due to the thin wide length of this steel plate specification and thickness deviation is narrow, produces and be difficult to ensure high strength and-45.6 DEG C of low-temperature impacts simultaneously, and easily there is the little and wooden dipper Qu Xianxiang of impact property surplus capacity, the domestic producer that there is no can produce this extra wide steel plate having technical requirements at present.
Summary of the invention
The object of the present invention is to provide a kind of extra wide tank car high strength carbon manganese steel plate and production method thereof, meet the requirement of Different field construction technology condition.
To achieve these goals, technical scheme of the present invention provides a kind of extra wide tank car high strength carbon manganese steel plate, and described steel plate is made up of the chemical composition of following weight percentage: C:0.15 ~ 0.24%, Si:0.15 ~ 0.40%, Mn:1.00 ~ 1.65%, P≤0.025%, S≤0.015%, Nb:0.015 ~ 0.020%, Cu:0.15 ~ 0.35%, Ti≤0.020%, B≤0.0005%, N≤0.010%, Al:0.015 ~ 0.060%, V:0.065 ~ 0.080%, Ceq≤0.53%.
Steel plate of the present invention is made up of the chemical composition of following weight percentage: C:0.2%, Si:0.32%, Mn:1.57%, P:0.014%, S:0.001%, Nb:0.019%, Cu:0.18%, Ti:0.003%, B:0.0001%, N:0.004%, Al:0.036%, V:0.073%, Ceq:0.5%.
Steel plate of the present invention is made up of the chemical composition of following weight percentage: C:0.2%, Si:0.20%, Mn:1.54%, P:0.013%, S:0.002%, Nb:0.017%, Cu:0.17%, Ti:0.001%, B:0.0001%, N:0.004%, Al:0.036%, V:0.070%, Ceq:0.5%.
Steel plate of the present invention is made up of the chemical composition of following weight percentage: C:0.18%, Si:0.30%, Mn:1.50%, P:0.006%, S:0.002%, Nb:0.017%, Cu:0.20%, Ti:0.013%, B:0.0002%, N:0.005%, Al:0.037%, V:0.065%, Ceq≤0.45%.
Meanwhile, technical scheme of the present invention additionally provides a kind of production method of extra wide tank car high strength carbon manganese steel plate, comprising: smelt, heating, rolling, heat treatment step, and concrete steps are as described below:
(1) smelting technology: molten steel, first through electrosmelting, ensures slag free tapping, adds reductor pre-deoxidation with molten steel; Send into the refining of LF refining furnace subsequently, strengthening deoxidation dynamics, ensures white slag hold-time 20 ~ 40min, effective refining total time 40 ~ 60min; Last VD stove vacuum-treat again, below vacuum-treat 66Pa hold-time 15 ~ 30min, obtains steel billet;
(2) heating process: steel billet is put into process furnace and heats, the heating zone temperature of process furnace is 1240 ~ 1260 DEG C, and soaking zone temperature is 1220 ~ 1240 DEG C;
(3) rolling technology: Direct Rolling after roll change, aligning, does not water after rolling and ensures plate shape;
(4) thermal treatment process: normalizing: 880 ~ 930 DEG C, soaking time 1.5 ~ 2.5min/mm, air cooling, obtains qualified steel plate.
Electrosmelting tapping temperature 1580 ~ 1620 DEG C in step of the present invention (1).
In step of the present invention (2), total heat-up time of heating zone and soaking zone is 1.0min/cm, and wherein the soaking zone time is greater than 40min.
Step of the present invention (5) light plate width >=3750mm.
The beneficial effect of the technical program is adopted to be: 1) to have steel purer; 2) tensile strength of steel plate and yield strength good; 3)-46.5 DEG C of low-temperature flexibilities are good; Test-results shows: the steel plate adopting method of the present invention to produce has that purity is higher, the feature of uniform composition, interior solid, and mechanical property is even, meets standard-required completely.After this Plate Production, steel plate object performance reaches technical requirements level, and obtains user's favorable comment, is suitable for manufacturing trough truck head plate.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
Embodiment 1
TC128GrB rolling specs: 14*3850*11550(thickness * width * length)
The actual constituent (by weight percentage) of steel plate is shown in attached table 1:
The production method of the present embodiment is as follows: (1) smelting technology: steel-making step: molten steel, first through electrosmelting, ensures slag free tapping, adds reductor pre-deoxidation, tapping temperature 1620 DEG C with molten steel.Send into the refining of LF refining furnace subsequently, strengthening deoxidation dynamics, ensures white slag hold-time 30min, effective refining total time 40min.Last VD stove vacuum-treat again, below vacuum-treat 66Pa hold-time 15min, obtains steel billet.
(2) heating process: control heating steel billet system during heating well, Heating temperature is the highest 1260 DEG C, and soaking zone temperature is 1240 DEG C; Steel billet total heat-up time is 1.0min/cm, soaking zone time 40min, ensures steel billet temperature uniform well-burnt.
(3) rolling technology: Direct Rolling after roll change, aligning, does not water after rolling and ensures plate shape.
(4) thermal treatment process: normalizing: 880 DEG C, soaking time 2.5min/mm, air cooling, obtains qualified steel plate.
Embodiment 2
TC128GrB rolling specs: 13*3800*7600(thickness * width * length)
The actual constituent (by weight percentage) of steel plate is shown in attached table 1:
The production method of the present embodiment is as follows: (1) smelting technology: steel-making step: molten steel, first through electrosmelting, ensures slag free tapping, adds reductor pre-deoxidation, tapping temperature 1580 DEG C with molten steel.Send into the refining of LF refining furnace subsequently, strengthening deoxidation dynamics, ensures white slag hold-time 40min, effective refining total time 60min.Last VD stove vacuum-treat again, below vacuum-treat 66Pa hold-time 30min, obtains steel billet.
(2) heating process: control heating steel billet system during heating well, Heating temperature is the highest 1240 DEG C, and soaking zone temperature is 1220 DEG C, steel billet 1.0min/cm total heat-up time, soaking zone time 60min, ensures steel billet temperature uniform well-burnt.
(3) rolling technology: Direct Rolling after roll change, aligning, does not water after rolling and ensures plate shape.
(4) thermal treatment process: normalizing: 930 DEG C, soaking time 1.5min/mm, air cooling, obtains qualified steel plate.
Embodiment 3
TC128GrB rolling specs: 13*3750*11250(thickness * width * length)
The actual constituent (by weight percentage) of steel plate is shown in attached table 1:
The production method of the present embodiment is as follows: (1) smelting technology: steel-making step: molten steel, first through electrosmelting, ensures slag free tapping, adds reductor pre-deoxidation, tapping temperature 1600 DEG C with molten steel.Send into the refining of LF refining furnace subsequently, strengthening deoxidation dynamics, ensures white slag hold-time 30min, effective refining total time 50min.Last VD stove vacuum-treat again, below vacuum-treat 66Pa hold-time 20min.
(2) heating process: control heating steel billet system during heating well, Heating temperature is the highest 1250 DEG C, and soaking zone temperature is 1230 DEG C; Steel billet 1.0min/cm total heat-up time, soaking zone time 50min, ensure steel billet temperature uniform well-burnt.
(3) rolling technology: Direct Rolling after roll change, aligning, does not water after rolling and ensures plate shape.
(4) thermal treatment process: normalizing: 900 DEG C, soaking time 2min/mm, air cooling, obtains qualified steel plate.
Embodiment 4
TC128GrB rolling specs: 13*3750*11250(thickness * width * length)
The actual constituent (by weight percentage) of steel plate is shown in attached table 1:
The production method of the present embodiment is as follows: (1) smelting technology: steel-making step: molten steel, first through electrosmelting, ensures slag free tapping, adds reductor pre-deoxidation, tapping temperature 1590 DEG C with molten steel.Send into the refining of LF refining furnace subsequently, strengthening deoxidation dynamics, ensures white slag hold-time 35min, effective refining total time 55min.Last VD stove vacuum-treat again, 25 minutes below vacuum-treat 66Pa hold-times.
(2) heating process: control heating steel billet system during heating well, Heating temperature is the highest 1260 DEG C, and soaking zone temperature is 1235 DEG C; Steel billet 1.0min/cm total heat-up time, soaking zone time 55min, ensure steel billet temperature uniform well-burnt.
(3) rolling technology: Direct Rolling after roll change, aligning, does not water after rolling and ensures plate shape.
(4) thermal treatment process: normalizing: 920 DEG C, soaking time 2.5min/mm, air cooling, obtains qualified steel plate.
Embodiment 5
TC128GrB rolling specs: 13*3750*11250(thickness * width * length)
The actual constituent (by weight percentage) of steel plate is shown in attached table 1:
The production method of the present embodiment is as follows: (1) smelting technology: steel-making step: molten steel, first through electrosmelting, ensures slag free tapping, adds reductor pre-deoxidation, tapping temperature 1610 DEG C with molten steel.Send into the refining of LF refining furnace subsequently, strengthening deoxidation dynamics, ensures white slag hold-time 25min, effective refining total time 50min.Last VD stove vacuum-treat again, 28 minutes below vacuum-treat 66Pa hold-times.
(2) heating process: control heating steel billet system during heating well, Heating temperature is the highest 1255 DEG C, soaking zone temperature is 1225 DEG C; Steel billet 1.0min/cm total heat-up time, soaking zone time 65min, ensure steel billet temperature uniform well-burnt.
(3) rolling technology: Direct Rolling after roll change, aligning, does not water after rolling and ensures plate shape.
(4) thermal treatment process: normalizing: 910 DEG C, soaking time 2.2min/mm, air cooling, obtains qualified steel plate.
Embodiment 1-5 plate property detected result is in table 2.
The steel plate Chemical Composition (%) of table 1 embodiment 1-3
The plate property detected result of table 2 embodiment 1-5
Experiment proves: Plate Production manufacturing process of the present invention is simple, and thermal treatment low-temperature impact toughness is good, and the design requirements of other comprehensive mechanical property also completely satisfied steel, can realize producing in batches.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: still can modify to the present invention or equivalent replacement, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. an extra wide tank car high strength carbon manganese steel plate, is characterized in that, described steel plate is made up of the chemical composition of following weight percentage: C:0.15 ~ 0.24%, Si:0.15 ~ 0.40%, Mn:1.00 ~ 1.65%, P≤0.025%, S≤0.015%, Nb:0.015 ~ 0.020%, Cu:0.15 ~ 0.35%, Ti≤0.020%, B≤0.0005%, N≤0.010%, Al:0.015 ~ 0.060%, V:0.065 ~ 0.080%, Ceq≤0.53%.
2. a kind of extra wide tank car high strength carbon manganese steel plate according to claim 1, it is characterized in that, described steel plate is made up of the chemical composition of following weight percentage: C:0.2%, Si:0.32%, Mn:1.57%, P:0.014%, S:0.001%, Nb:0.019%, Cu:0.18%, Ti:0.003%, B:0.0001%, N:0.004%, Al:0.036%, V:0.073%, Ceq:0.5%.
3. a kind of extra wide tank car high strength carbon manganese steel plate according to claim 1, it is characterized in that, described steel plate is made up of the chemical composition of following weight percentage: C:0.2%, Si:0.20%, Mn:1.54%, P:0.013%, S:0.002%, Nb:0.017%, Cu:0.17%, Ti:0.001%, B:0.0001%, N:0.004%, Al:0.036%, V:0.070%, Ceq:0.5%.
4. a kind of extra wide tank car high strength carbon manganese steel plate according to claim 1, it is characterized in that, described steel plate is made up of the chemical composition of following weight percentage: C:0.18%, Si:0.30%, Mn:1.50%, P:0.006%, S:0.002%, Nb:0.017%, Cu:0.20%, Ti:0.013%, B:0.0002%, N:0.005%, Al:0.037%, V:0.065%, Ceq≤0.45%.
5. the production method of a kind of extra wide tank car high strength carbon manganese steel plate as described in claim 1-4 any one, is characterized in that, comprising: smelt, heating, rolling, heat treatment step, and concrete steps are as described below:
(1) smelting technology: molten steel, first through electrosmelting, ensures slag free tapping, adds reductor pre-deoxidation with molten steel; Send into the refining of LF refining furnace subsequently, strengthening deoxidation dynamics, ensures white slag hold-time 20 ~ 40min, effective refining total time 40 ~ 60min; Last VD stove vacuum-treat again, below vacuum-treat 66Pa hold-time 15 ~ 30min, obtains steel billet;
(2) heating process: steel billet is put into process furnace and heats, the heating zone temperature of process furnace is 1240 ~ 1260 DEG C, and soaking zone temperature is 1220 ~ 1240 DEG C;
(3) rolling technology: Direct Rolling after roll change, aligning, does not water after rolling and ensures plate shape;
(4) thermal treatment process: normalizing: 880 ~ 930 DEG C, soaking time 1.5 ~ 2.5min/mm, air cooling, obtains qualified steel plate.
6. production method according to claim 5, is characterized in that, electrosmelting tapping temperature 1580 ~ 1620 DEG C in described step (1).
7. production method according to claim 5, is characterized in that, in described step (2), total heat-up time of heating zone and soaking zone is 1.0min/cm, and wherein the soaking zone time is greater than 40min.
8. production method according to claim 5, is characterized in that, described step (5) light plate width >=3750mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510848836.1A CN105441793A (en) | 2015-11-30 | 2015-11-30 | High-strength carbon manganese steel plate for extra-wide tank car and production method of steel plate |
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| CN201510848836.1A CN105441793A (en) | 2015-11-30 | 2015-11-30 | High-strength carbon manganese steel plate for extra-wide tank car and production method of steel plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110218941A (en) * | 2019-06-26 | 2019-09-10 | 河南济源钢铁(集团)有限公司 | A kind of process and structural alloy steel reducing alloy structure steel hardenability |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001200334A (en) * | 2000-01-17 | 2001-07-24 | Nkk Corp | 60 kilo class high tensile strength steel excellent in weldability and toughness |
| JP2002047531A (en) * | 2000-05-22 | 2002-02-15 | Nippon Steel Corp | High tensile strength steel for welded structure having excellent fatigue characteristic and its production method |
| CN101451218A (en) * | 2007-12-07 | 2009-06-10 | 舞阳钢铁有限责任公司 | Quenching and tempering type abrasion resistant steel and heat treating method thereof |
| CN104480393A (en) * | 2014-11-26 | 2015-04-01 | 舞阳钢铁有限责任公司 | TC128GrB steel plate for oil bath tank truck and production method of TC128GrB steel plate |
| CN104878294A (en) * | 2015-05-20 | 2015-09-02 | 舞阳钢铁有限责任公司 | P440NL1 steel plate for oil groove tank car and production method of P440NL1 steel plate |
-
2015
- 2015-11-30 CN CN201510848836.1A patent/CN105441793A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001200334A (en) * | 2000-01-17 | 2001-07-24 | Nkk Corp | 60 kilo class high tensile strength steel excellent in weldability and toughness |
| JP2002047531A (en) * | 2000-05-22 | 2002-02-15 | Nippon Steel Corp | High tensile strength steel for welded structure having excellent fatigue characteristic and its production method |
| CN101451218A (en) * | 2007-12-07 | 2009-06-10 | 舞阳钢铁有限责任公司 | Quenching and tempering type abrasion resistant steel and heat treating method thereof |
| CN104480393A (en) * | 2014-11-26 | 2015-04-01 | 舞阳钢铁有限责任公司 | TC128GrB steel plate for oil bath tank truck and production method of TC128GrB steel plate |
| CN104878294A (en) * | 2015-05-20 | 2015-09-02 | 舞阳钢铁有限责任公司 | P440NL1 steel plate for oil groove tank car and production method of P440NL1 steel plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110218941A (en) * | 2019-06-26 | 2019-09-10 | 河南济源钢铁(集团)有限公司 | A kind of process and structural alloy steel reducing alloy structure steel hardenability |
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Application publication date: 20160330 |