CN107022723A - The big big substance 12Cr2Mo1VR steel plates of specification and its production method - Google Patents
The big big substance 12Cr2Mo1VR steel plates of specification and its production method Download PDFInfo
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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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
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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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0257—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with diffusion of elements, e.g. decarburising, nitriding
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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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
- 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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
Abstract
The invention discloses the big substance 12Cr2Mo1VR steel plates of big specification and its production method, the steel plate main alloy element and weight/mass percentage composition are：C：0.10 0.16%, Si≤0.1%, Mn：0.27 0.63%, Cr：1.95 2.6%, Mo：0.87 1.13%, V：0.25‑0.35%；Harmful element chemical composition and weight/mass percentage composition are：S≤0.002%, P≤0.005%, As≤0.006%, Sb≤0.001%, Sn≤0.003%, surplus is Fe and inevitable impurity element.Production method includes steel-making, heating rolling, heat treatment step, continuous casting billet is gone out using electric arc furnaces or pneumatic steelmaking+continuous casting during steel-making, continuous casting billet is made electrode and the obtained ESR ingot of secondary remelting is carried out in electroslag refining furnace, and ESR ingot passes through cogging, slow cooling, rolling and normalizing（Accelerate cooling）The 12Cr2Mo1VR steel plates of+tempering heat treatment process production most weigh 36t, and thickness maximum reaches 162mm, for up to 15600mm.Steel plate inspection meets I grade of NB/T47013.3, and surface quality is good, and performance is better than standard requirement.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, and in particular to the big big substance 12Cr2Mo1VR steel plates of specification and its production
Method.
Background technology
12Cr2Mo1R steel plates are the current strong heat resisting steel of heat widely used in the world and resistant to hydrogen steel, with good height
Warm mechanical property, high temperature oxidation resistance, corrosion resistance, good toughness and solderability.But with use condition increasingly
Harshness, 12Cr2Mo1R can not meet demand in the use of some equipment.Add V modified Cr-Mo steel 12Cr2Mo1VR
It is the high-temperature high-voltage reaction equipment material that newly-developed gets up in the world, in intensity, resistant to hydrogen performance, anti-temper embrittlement ability, resistant to hydrogen
Cause all to be significantly improved compared with 12Cr2Mo1R steel in terms of stripping ability.The size of order of 12Cr2Mo1VR steel gradually increases, and it is advised
Lattice and quality requirement also gradually increase, in order to produce bigger specification and higher-quality 12Cr2Mo1VR steel plates, continuous casting billet and steel
Ingot is become a useful person can not meet production requirement, therefore produce the big big substance 12Cr2Mo1VR steel plates of specification as research using ESR ingot
Difficult point.
The content of the invention
The technical problems to be solved by the invention are to provide the big substance 12Cr2Mo1VR steel plates of big specification；Big rule are provided simultaneously
The production method of the big substance 12Cr2Mo1VR steel plates of lattice.
In order to solve the above technical problems, the technical solution used in the present invention is：The big substance 12Cr2Mo1VR steel of big specification
Plate, the steel plate main alloy element and weight/mass percentage composition are：C：0.10-0.16%, Mn：0.27-0.63%, Si≤0.1%,
Cr：1.95-2.6%, Mo：0.87-1.13%, V：0.25-0.35%；Harmful element and weight/mass percentage composition are：S≤0.002%, P
≤ 0.005%, As≤0.006%, Sb≤0.001%, Sn≤0.003%, surplus are Fe and inevitable impurity element；Steel plate head
Tail composition gap is little.
Steel plate weight≤36t of the present invention, thickness≤162mm, length≤15600mm.
Steel plate yield strength >=470MPa of the present invention, elongation percentage >=18%, ballistic work >=169J, grain size >=5.5.
Tensile strength 600-730MPa of the present invention.
The present invention also provides a kind of production method of the above-mentioned big big substance 12Cr2Mo1VR steel plates of specification, and methods described includes
Steel-making, heating rolling, heat treatment step.
Steel making working procedure of the present invention, using electric arc furnaces or pneumatic steelmaking, carries out refining and application of vacuum in refining furnace,
Continuous casting billet is processed into electrode after pulling out continuous casting billet, electrode is carried out into secondary remelting in electroslag refining furnace is made ESR ingot, electricity
Slag system is five yuan of slag systems during slag remelting, and it is 1000-1500kg/h to melt speed, and smelting temperature is 1600-1630 DEG C.
Steel making working procedure of the present invention, main alloy element and weight/mass percentage composition control are as follows when continuous casting billet is smelted：C：
0.14-0.15%, Si：0.05-0.07%, Mn：0.56-0.60%, Cr：2.47-2.53%, Mo：1.05-1.10%, V：0.31-
0.35%, other elements are controlled by standard regulation.
Heating rolling process of the present invention, ESR ingot, which is put into soaking pit, carries out heating and thermal insulation, turns steel billet after cogging
Burial pit carries out expansion hydrogen annealing, and annealing terminates rear steel billet band temperature and clear up and fill continuous oven hot rolling directly to become a useful person, and stacking processing, plus
Hot rolling temperature is 1200-1250 DEG C, and it is 600-650 DEG C to expand hydrogen annealing temperature.
Heat treatment step of the present invention, the steel plate after rolling accelerates cooling after double normalizing, and one time normalizing temperature is
930-950 DEG C, secondary normalizing temperature is 920-940 DEG C.
Heat treatment step of the present invention, tempered processing finished product steel plate, temperature is 680-710 DEG C, in stove
Time 470-490min.
The big big substance 12Cr2Mo1VR plate properties examination criteria reference of specification：GB713-2014.
It is using the beneficial effect produced by above-mentioned technical proposal：1st, the 12Cr2Mo1VR steel of ESR ingot production of the present invention
Plate most weighs to 36t, and thickness is up to 162mm, most long 15600mm.2nd, present invention production steel plate inspection meets NB/
I grade of T47013.3, yield strength >=470MPa, elongation percentage >=18%, ballistic work >=169J, grain size >=5.5, tensile strength
600-730MPa.Plate surface quality is good, and performance is better than standard requirement.
Embodiment
With reference to specific embodiment, the present invention is further detailed explanation.
Embodiment 1
This 12Cr2Mo1VR steel plates weight is 35t, and thickness is 160mm, length 15000mm.
This 12Cr2Mo1VR steel plates chemical composition and weight/mass percentage composition are：C：0.15%, Si：0.04%, Mn：0.54%,
Cr：2.36%, Mo：1%, V：0.31%, P：0.005%, S：0.001%, As：0.006%, Sn：0.001%, Sb：0.001%.
This 12Cr2Mo1VR Plate Productions method includes steel-making, heating rolling, heat treatment step.Comprise the following steps that：
1）Steel making working procedure：Using electric-arc furnace steelmaking, carry out refining and application of vacuum in refining furnace, be made into after pulling out continuous casting billet
Electrode, carries out secondary remelting in electroslag refining furnace by electrode and ESR ingot is made, and slag system is five yuan of slag systems during electroslag remelting, melts speed
For 1250kg/h, smelting temperature is 1610 DEG C；Chemical composition and weight/mass percentage composition control are as follows when continuous casting billet is smelted：C：
0.15%, Si：0.05%, Mn：0.56%, Cr：2.47%, Mo：1.06%, V：0.314%, P：0.004%, S：0.002%, As：
0.005%, Sn：0.001%, Sb：0.001%.
2）Heating rolling process：ESR ingot, which is put into soaking pit, carries out heating and thermal insulation, and heating rolling temperature is 1250 DEG C；Open
Steel billet is turned into burial pit after base and carries out expansion hydrogen annealing, it is 620 DEG C to expand hydrogen annealing temperature, and annealing terminates rear steel billet band temperature and clears up and fill
Continuous oven hot rolling is directly become a useful person, and is not watered after rolling, and stacking is handled.
3）Heat treatment step：Steel plate after rolling accelerates cooling after double normalizing, and a normalizing temperature is 950 DEG C, two
Secondary normalizing temperature is 940 DEG C；Through temper finished product steel plate after cooling, temperature is 680 DEG C, and time inside furnace is
485min。
This 12Cr2Mo1VR plate property indexs are shown in Table 1.
Embodiment 2
This 12Cr2Mo1VR steel plates weight is 36t, and thickness is 162mm, length 15600mm.
This 12Cr2Mo1VR steel plates chemical composition and weight/mass percentage composition are：C：0.10%, Si：0.1%, Mn：0.27%, Cr：
1.95%, V：0.25%, Mo：0.87%, P：0.005%, S：0.002%, As：0.006%, Sn：0.003%, Sb：0.001%.
This 12Cr2Mo1VR Plate Productions method includes steel-making, heating rolling, heat treatment step.Comprise the following steps that：
1）Steel making working procedure：Using pneumatic steelmaking, carry out refining and application of vacuum in refining furnace, electricity is made into after pulling out continuous casting billet
Pole, carries out secondary remelting in electroslag refining furnace by electrode and ESR ingot is made, and slag system is five yuan of slag systems during electroslag remelting, and molten speed is
1000kg/h, smelting temperature is 1600 DEG C；Chemical composition and weight/mass percentage composition control are as follows when continuous casting billet is smelted：C：0.14%,
Si：0.06%, Mn：0.56%, Cr：2.47%, Mo：1.05%, V：0.31%, P：0.005%, S：0.002%, As：0.006%, Sn：
0.003%, Sb：0.001%.
2）Heating rolling process：ESR ingot, which is put into soaking pit, carries out heating and thermal insulation, and heating rolling temperature is 1200 DEG C；Open
Steel billet is turned into burial pit after base and carries out expansion hydrogen annealing, it is 600 DEG C to expand hydrogen annealing temperature, and annealing terminates rear steel billet band temperature and clears up and fill
Continuous oven hot rolling is directly become a useful person, and is not watered after rolling, and stacking is handled.
3）Heat treatment step：Steel plate after rolling accelerates cooling after double normalizing, and a normalizing temperature is 930 DEG C, two
Secondary normalizing temperature is 920 DEG C；Through temper finished product steel plate after cooling, temperature is 685 DEG C, and time inside furnace is
490min。
This 12Cr2Mo1VR plate property indexs are shown in Table 1.
Embodiment 3：
This 12Cr2Mo1VR steel plates weight is 31t, and thickness is 161mm, length 15500mm.
This 12Cr2Mo1VR steel plates chemical composition and weight/mass percentage composition are：C：0.16%, Si：0.04%, Mn：0.63%,
Cr：2.6%, V：0.35%, Mo：1.13%, P：0.005%, S：0.002%, As：0.005%, Sn：0.001%, Sb：0.001%.
This 12Cr2Mo1VR Plate Productions method includes steel-making, heating rolling, heat treatment step.Comprise the following steps that：
1）Steel making working procedure：Using electric-arc furnace steelmaking, carry out refining and application of vacuum in refining furnace, be made into after pulling out continuous casting billet
Electrode, carries out secondary remelting in electroslag refining furnace by electrode and ESR ingot is made, and slag system is five yuan of slag systems during electroslag remelting, melts speed
For 1500kg/h, smelting temperature is 1630 DEG C；Chemical composition and weight/mass percentage composition control are as follows when continuous casting billet is smelted：C：
0.14%, Si：0.06%, Mn：0.60%, Cr：2.53%, Mo：1.10%, V：0.35%, P：0.004%, S：0.001%, As：
0.005%, Sn：0.002%, Sb：0.001%.
2）Heating rolling process：ESR ingot, which is put into soaking pit, carries out heating and thermal insulation, and heating rolling temperature is 1245 DEG C；Open
Steel billet is turned into burial pit after base and carries out expansion hydrogen annealing, it is 650 DEG C to expand hydrogen annealing temperature, and annealing terminates rear steel billet band temperature and clears up and fill
Continuous oven hot rolling is directly become a useful person, and is not watered after rolling, and stacking is handled.
3）Heat treatment step：Steel plate after rolling accelerates cooling after double normalizing, and a normalizing temperature is 950 DEG C, two
Secondary normalizing temperature is 930 DEG C；Through temper finished product steel plate after cooling, temperature is 680 DEG C, and time inside furnace is
470min。
This 12Cr2Mo1VR plate property indexs are shown in Table 1.
Embodiment 4：
This 12Cr2Mo1VR steel plates weight is 32t, and thickness is 152mm, length 15400mm.
This 12Cr2Mo1VR steel plates chemical composition and weight/mass percentage composition are：C：0.14%, Si：0.05%, Mn：0.54%,
Cr：2.39%, V：0.3%, Mo：1.01%, P：0.005%, S：0.002%, As：0.004%, Sn：0.001%, Sb：0.001%.
This 12Cr2Mo1VR Plate Productions method includes steel-making, heating rolling, heat treatment step.Comprise the following steps that：
1）Steel making working procedure：Using pneumatic steelmaking, carry out refining and application of vacuum in refining furnace, electricity is made into after pulling out continuous casting billet
Pole, carries out secondary remelting in electroslag refining furnace by electrode and ESR ingot is made, and slag system is five yuan of slag systems during electroslag remelting, and molten speed is
1210kg/h, smelting temperature is 1615 DEG C；Chemical composition and weight/mass percentage composition control are as follows when continuous casting billet is smelted：C：0.15%,
Si：0.05%, Mn：0.56%, Cr：2.48%, Mo：1.07%, V：0.32%, P：0.005%, S：0.001%, As：0.005%, Sn：
0.001%, Sb：0.001%.
2）Heating rolling process：ESR ingot, which is put into soaking pit, carries out heating and thermal insulation, and heating rolling temperature is 1250 DEG C；Open
Steel billet is turned into burial pit after base and carries out expansion hydrogen annealing, it is 630 DEG C to expand hydrogen annealing temperature, and annealing terminates rear steel billet band temperature and clears up and fill
Continuous oven hot rolling is directly become a useful person, and is not watered after rolling, and stacking is handled.
3）Heat treatment step：Steel plate after rolling accelerates cooling after double normalizing, and a normalizing temperature is 950 DEG C, two
Secondary normalizing temperature is 935 DEG C；Through temper finished product steel plate after cooling, temperature is 690 DEG C, and time inside furnace is
490min。
This 12Cr2Mo1VR plate property indexs are shown in Table 1.
Embodiment 5
This 12Cr2Mo1VR steel plates weight is 33t, and thickness is 160mm, length 15100mm.
This 12Cr2Mo1VR steel plates chemical composition and weight/mass percentage composition are：C：0.13%, Si：0.06%, Mn：0.51%,
Cr：2.41%, V：0.31%, Mo：1.0%, P：0.004%, S：0.002%, As：0.004%, Sn：0.001%, Sb：0.001%.
This 12Cr2Mo1VR Plate Productions method includes steel-making, heating rolling, heat treatment step.Comprise the following steps that：
1）Steel making working procedure：Using electric-arc furnace steelmaking, carry out refining and application of vacuum in refining furnace, be made into after pulling out continuous casting billet
Electrode, carries out secondary remelting in electroslag refining furnace by electrode and ESR ingot is made, and slag system is five yuan of slag systems during electroslag remelting, melts speed
For 1300kg/h, smelting temperature is 1620 DEG C；Chemical composition and weight/mass percentage composition control are as follows when continuous casting billet is smelted：C：
0.14%, Si：0.07%, Mn：0.57%, Cr：2.48%, Mo：1.09%, V：0.33%, P：0.005%, S：0.001%, As：
0.005%, Sn：0.001%, Sb：0.001%.
2）Heating rolling process：ESR ingot, which is put into soaking pit, carries out heating and thermal insulation, and heating rolling temperature is 1250 DEG C；Open
Steel billet is turned into burial pit after base and carries out expansion hydrogen annealing, it is 630 DEG C to expand hydrogen annealing temperature, and annealing terminates rear steel billet band temperature and clears up and fill
Continuous oven hot rolling is directly become a useful person, and is not watered after rolling, and stacking is handled.
3）Heat treatment step：Steel plate after rolling accelerates cooling after double normalizing, and a normalizing temperature is 950 DEG C, two
Secondary normalizing temperature is 940 DEG C；Through temper finished product steel plate after cooling, temperature is 710 DEG C, and time inside furnace is
480min。
This 12Cr2Mo1VR plate property indexs are shown in Table 1.
Each embodiment product normalizing+tempering of table 1+simulation postwelding mechanical property table
Above example is only used to illustrative and not limiting technical scheme, although entering with reference to above-described embodiment to the present invention
Go detailed description, it will be understood by those within the art that：Still the present invention can be modified or equally replaced
Change, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover will in right of the invention
Ask among scope.
Claims (10)
1. the big big substance 12Cr2Mo1VR steel plates of specification, it is characterised in that the steel plate main alloy element and quality percentage contain
Measure and be：C：0.10-0.16%, Si≤0.1%, Mn：0.27-0.63%, Cr：1.95-2.6%, Mo：0.87-1.13%, V：0.25-
0.35%；Harmful element and weight/mass percentage composition are：S≤0.002%, P≤0.005%, As≤0.006%, Sb≤0.001%, Sn≤
0.003%, surplus is Fe and inevitable impurity element.
2. the big substance 12Cr2Mo1VR steel plates of big specification according to claim 1, it is characterised in that the steel plate weight≤
36t, thickness≤162mm, length≤15600mm.
3. the big substance 12Cr2Mo1VR steel plates of big specification according to claim 1 or 2, it is characterised in that the steel plate is bent
Take intensity >=470MPa, elongation percentage >=18%, ballistic work >=169J, grain size >=5.5.
4. the big substance 12Cr2Mo1VR steel plates of big specification according to claim 1 or 2, it is characterised in that the steel plate resists
Tensile strength 600-730MPa.
5. based on the production method of the big substance 12Cr2Mo1VR steel plates of big specification described in claim 1-4 any one, it is special
Levy and be, methods described includes steel-making, heating rolling, heat treatment step.
6. the production method of the big substance 12Cr2Mo1VR steel plates of big specification according to claim 5, it is characterised in that described
Steel making working procedure, using electric arc furnaces or pneumatic steelmaking, carries out refining and application of vacuum in refining furnace, pulls out continuous casting after continuous casting billet
Base is processed into electrode, and electrode is carried out into secondary remelting in electroslag refining furnace is made ESR ingot, and slag system is five yuan during electroslag remelting
Slag system, it is 1000-1500kg/h to melt speed, and smelting temperature is 1600-1630 DEG C.
7. the production method of the big substance 12Cr2Mo1VR steel plates of big specification according to claim 5, it is characterised in that described
Steel making working procedure, main alloy element and weight/mass percentage composition control are as follows when continuous casting billet is smelted：C：0.14-0.15%, Si：0.05-
0.07%, Mn：0.56-0.60%, Cr：2.47-2.53%, Mo：1.05-1.10%, V：0.31-0.35%.
8. the production method of the big substance 12Cr2Mo1VR steel plates of big specification according to claim 5-7 any one, it is special
Levy and be, the heating rolling process, ESR ingot, which is put into soaking pit, carries out heating and thermal insulation, and steel billet is turned into burial pit after cogging enters
Row expands hydrogen annealing, and annealing terminates rear steel billet band temperature and clear up and fill continuous oven hot rolling directly to become a useful person, and stacking processing, heating rolling temperature
Spend for 1200-1250 DEG C, it is 600-650 DEG C to expand hydrogen annealing temperature.
9. the production method of the big substance 12Cr2Mo1VR steel plates of big specification according to claim 5-7 any one, it is special
Levy and be, the heat treatment step, the steel plate after rolling accelerates cooling after double normalizing, a normalizing temperature is 930-950
DEG C, secondary normalizing temperature is 920-940 DEG C.
10. the production method of the big substance 12Cr2Mo1VR steel plates of big specification according to claim 5-7 any one, it is special
Levy and be, the heat treatment step, tempered processing finished product steel plate, temperature is 680-710 DEG C, time inside furnace 470-
490min。
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| CN108660358A (en) * | 2018-06-08 | 2018-10-16 | 本钢板材股份有限公司 | A kind of production technology of boiler heat resisting structural steel 12Cr1MoV |
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| CN109355579A (en) * | 2018-12-25 | 2019-02-19 | 南阳汉冶特钢有限公司 | A kind of high temperature pressure vessel super-thick steel plate 12Cr2Mo1VR and its production technology |
| CN110512089A (en) * | 2019-08-20 | 2019-11-29 | 舞阳钢铁有限责任公司 | The preparation method of high temperature resistant 3Cr-1Mo-0.25V alloy-steel plate |
| CN111020142A (en) * | 2019-12-23 | 2020-04-17 | 舞阳钢铁有限责任公司 | Cogging and slow cooling process for Cr-Mo steel blank |
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| CN109355579A (en) * | 2018-12-25 | 2019-02-19 | 南阳汉冶特钢有限公司 | A kind of high temperature pressure vessel super-thick steel plate 12Cr2Mo1VR and its production technology |
| CN110512089A (en) * | 2019-08-20 | 2019-11-29 | 舞阳钢铁有限责任公司 | The preparation method of high temperature resistant 3Cr-1Mo-0.25V alloy-steel plate |
| CN110512089B (en) * | 2019-08-20 | 2021-06-22 | 舞阳钢铁有限责任公司 | Preparation method of high-temperature-resistant 3Cr-1Mo-0.25V alloy steel plate |
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| CN112981232A (en) * | 2021-01-21 | 2021-06-18 | 江阴兴澄特种钢铁有限公司 | 12Cr2Mo1VR steel plate with low compression ratio and high flaw detection quality requirement for continuous casting billet finished product and production process thereof |
| CN112981232B (en) * | 2021-01-21 | 2022-09-30 | 江阴兴澄特种钢铁有限公司 | 12Cr2Mo1VR steel plate with low compression ratio and high flaw detection quality requirement for continuous casting billet finished product and production process thereof |
| CN115852266A (en) * | 2022-12-12 | 2023-03-28 | 湖南华菱湘潭钢铁有限公司 | Production method for improving low-temperature impact toughness and high-temperature performance of ultra-thick hydrogen steel plate |
| CN115852266B (en) * | 2022-12-12 | 2023-09-05 | 湖南华菱湘潭钢铁有限公司 | Production method for improving low-temperature impact toughness and high-temperature performance of ultra-thick hydrogen-bonded steel plate |
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