CN108486490A - Big thickness low-temperature high-toughness A633 MOD steel plates and its production method - Google Patents
Big thickness low-temperature high-toughness A633 MOD steel plates and its production method Download PDFInfo
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- CN108486490A CN108486490A CN201810439441.XA CN201810439441A CN108486490A CN 108486490 A CN108486490 A CN 108486490A CN 201810439441 A CN201810439441 A CN 201810439441A CN 108486490 A CN108486490 A CN 108486490A
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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
-
- 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
-
- 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
-
- 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
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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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
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
A kind of big thickness low-temperature high-toughness A633 MOD steel plates and its production method, belong to technical field of steel production.The chemical composition of the steel plate forms and weight percentage is：C：0.13~0.15%, Mn：1.40~1.55%, P≤0.018%, S≤0.005%, Nb：0.028~0.035%, Al：0.025~0.040%, Ni:0.15~0.25%, surplus is Fe and inevitable impurity.The production method includes rolling and Tempering and Quenching process；Rolling process uses II type controlled rolling process；Tempering and Quenching process uses normalizing+tempering process.The present invention ensures that steel plate deformed penetrates into center portion, even tissue is consistent, and overall performance is uniform and stable, and production cost is low using the composition design of low Ni by controlled rolling, heat treatment process.
Description
Technical field
The invention belongs to technical field of steel production, and in particular to a kind of big thickness low-temperature high-toughness A633 MOD steel plates and
Its production method.
Background technology
With the manufacturing fast development of mechanized equipment, especially mine equipment, special Transport Machinery, lifting equipment etc.
High speed development, client are increasingly stringenter the quality requirement of steel plate, the low-alloy steel such as Q345E, A633GrD of general thickness specification
Plate cannot be satisfied the requirement of especially big thickness specification high intensity, high/low temperature toughness.General American Standard standard ASTM A633/A633M-
01 low alloy steel plate maximum gauge specification is 150mm, and yield strength to 150mm steel plates and tensile strength do not require；
Chinese Industrial Standards (CIS) GB/T 1591 requires >=265 MPa, tensile strength to the yield strength of low alloy steel plate Q345E 250mm specifications
450~600MPa.Due to customer requirement 200mm specification steel plates normalizing+tempering delivery, at the same require its yield strength >=
345MPa, tensile strength >=485MPa, elongation percentage >=23%, -60 DEG C of ballistic work >=50J, and above-mentioned performance indicator is apparently higher than U.S.
The requirement of mark and national standard.
Ordinary circumstance is to ensure especially big thickness steel plate plate mechanical property and low-temperature impact toughness, needs that your a large amount of gold is added
Belong to Ni elements and micro- carbide Nb, V element, and use this composition design high expensive, the market competitiveness is low.
Invention content
In order to solve the above technical problems, the present invention provides a kind of big thickness low-temperature high-toughness A633 MOD steel plates, while this
Invention also provides a kind of production method of big thickness low-temperature high-toughness A633 MOD steel plates.Production cost of the present invention is low, gained steel
Plate intensity high and low temperature impact flexibility is good.
Technical solution provided by the invention is：
A kind of big thickness low-temperature high-toughness A633 MOD steel plates, the chemical composition composition and weight percentage of the steel plate are：
C：0.13~0.15%, Mn：1.40~1.55%, P≤0.018%, S≤0.005%, Nb：0.028~0.035%, Al：0.025~
0.040%, Ni:0.15~0.25%, surplus is Fe and inevitable impurity.
Steel plate thickness of the present invention is 180~250mm.
The metallographic structure of steel plate of the present invention is ferrite+tempering bainite.
Steel plate yield strength >=345MPa of the present invention, tensile strength >=485MPa, elongation percentage >=23%, -60 DEG C of longitudinal directions
Ballistic work >=50J.
A kind of production method of big thickness low-temperature high-toughness A633 MOD steel plates, including rolling and Tempering and Quenching process；
The rolling process uses II type controlled rolling process；The Tempering and Quenching process uses normalizing+tempering process.
860~880 DEG C of rolling process two-stage start rolling temperature described in the method for the present invention, 810~820 DEG C of finishing temperature；It dries in the air
Steel thickness >=H+70mm, wherein H are finished steel thickness.
910~920 DEG C of Tempering and Quenching process normalizing temperature, 1.8~2.2min/ of heat insulating coefficient described in the method for the present invention
Mm, water cooling of coming out of the stove to 100 DEG C of surface of steel plate temperature or less.
640~650 DEG C of Tempering and Quenching process temperature, 3.0~4.0min/ of heat insulating coefficient described in the method for the present invention
mm。
Tempering and Quenching process described in the method for the present invention carries out in single-unit furnace.
The big thickness low-temperature high-toughness A633 MOD steel sheet products canonical reference ASTM A633/A633M-01 of the present invention.
It is using advantageous effect caused by above-mentioned technical proposal：1, the present invention uses the composition design of low Ni, in list
Body stove is heated, and carrying out normalizing by reasonable temperature section accelerates cooling and tempering, ensure that the yield strength of steel plate meets
Requirement.2, by reinforcing the controlled rolling process of front, ensure that steel plate deformed penetrates into center portion, then accelerate by suitable normalizing
Cooling+tempering heat treatment process efficiently solves the problems, such as that steel plate toughness under -60 DEG C of low-temperature impacts is difficult to meet the requirements.
3, present invention gained steel plate tissue uniformity, overall performance is uniform and stable, and production efficiency is high, and production cost is low.
Steel plate yield strength >=345MPa produced by the invention, tensile strength >=485MPa, elongation percentage >=23%, -60 DEG C of cross
To ballistic work >=50J.
Description of the drawings
Fig. 1 is 1 surface of steel plate metallographic structure figure of embodiment；
Fig. 2 is 1 steel plate plate thickness of embodiment, 1/4 position metallographic structure figure；
Fig. 3 is 2 surface of steel plate metallographic structure figure of embodiment；
Fig. 4 is 2 steel plate plate thickness of embodiment, 1/4 position metallographic structure figure；
Fig. 5 is 3 surface of steel plate metallographic structure figure of embodiment；
Fig. 6 is 3 steel plate plate thickness of embodiment, 1/4 position metallographic structure figure；
Fig. 7 is 4 surface of steel plate metallographic structure figure of embodiment；
Fig. 8 is 4 steel plate plate thickness of embodiment, 1/4 position metallographic structure figure.
Specific implementation mode
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
The big thickness low-temperature high-toughness A633 MOD steel plate thickness of the present embodiment is 180mm, steel plate chemical composition composition and its
Mass percentage is：C：0.13%, Mn：1.55%, P：0.018%, S：0.005%, Nb：0.035%, Al：0.040%, Ni：
0.15%, remaining is iron and inevitable impurity.
The big thickness low-temperature high-toughness A633 MOD Plate Production methods of the present embodiment include rolling and Tempering and Quenching process,
The Tempering and Quenching process uses normalizing+tempering process.Specific process step is as described below：
（1）Rolling process：Using II type controlled rolling, 880 DEG C of two-stage start rolling temperature, 810 DEG C of finishing temperature, dry in the air steel thickness 250mm；
（2）Tempering and Quenching process：It is carried out in single-unit furnace.920 DEG C of normalizing temperature, heat insulating coefficient 1.8min/mm, heat preservation terminates
Afterwards, surface of steel plate water cooling is to 100 DEG C；650 DEG C of temperature, heat insulating coefficient 3.0min/mm.
Big thickness low-temperature high-toughness A633 MOD mechanical property of steel plate testing results obtained by this implementation are shown in Table 1, surface of steel plate
Metallographic structure is shown in that Fig. 1, the 1/4 position metallographic structure of steel plate plate thickness are shown in Fig. 2.
Ferrite+tempering bainite is organized as by the visible surface of steel plate of Fig. 1, Fig. 2 and 1/4 position of plate thickness, no banded structure,
Ferrite grain size is 20-35 μm, illustrates steel plate even tissue, and performance is uniform, fully meets the property requirement of client.
Embodiment 2
The big thickness low-temperature high-toughness A633 MOD steel plate thickness of the present embodiment is 200mm, steel plate chemical composition composition and its
Mass percentage is：C：0.14%, Mn：1.40%, P：0.013%, S：0.003%, Nb：0.029%, Al：0.027%, Ni：
0.25%, remaining is iron and inevitable impurity.
The big thickness low-temperature high-toughness A633 MOD Plate Production methods of the present embodiment include rolling and Tempering and Quenching process,
The Tempering and Quenching process uses normalizing+tempering process.Specific process step is as described below：
（1）Rolling process：Using II type controlled rolling, 870 DEG C of two-stage start rolling temperature, 820 DEG C of finishing temperature, dry in the air steel thickness 300mm；
（2）Tempering and Quenching process：It is carried out in single-unit furnace.910 DEG C of normalizing temperature, heat insulating coefficient 1.8min/mm, heat preservation terminates
Afterwards, surface of steel plate water cooling is to 50 DEG C；640 DEG C of temperature, heat insulating coefficient 3.5min/mm.
Big thickness low-temperature high-toughness A633 MOD mechanical property of steel plate testing results obtained by this implementation are shown in Table 1, surface of steel plate
Metallographic structure is shown in that Fig. 3, the 1/4 position metallographic structure of steel plate plate thickness are shown in Fig. 4.
Ferrite+tempering bainite is organized as by the visible surface of steel plate of Fig. 3, Fig. 4 and 1/4 position of plate thickness, no banded structure,
Ferrite grain size is 18-25 μm, illustrates steel plate even tissue, and performance is uniform, fully meets the property requirement of client.
Embodiment 3
The big thickness low-temperature high-toughness A633 MOD steel plate thickness of the present embodiment is 220mm, steel plate chemical composition composition and its
Mass percentage is：C：0.15%, Mn：1.50%, P：0.012%, S：0.005%, Nb：0.030%, Al：0.025%, Ni:
0.20%, remaining is iron and inevitable impurity.
The big thickness low-temperature high-toughness A633 MOD Plate Production methods of the present embodiment include rolling and Tempering and Quenching process,
The Tempering and Quenching process uses normalizing+tempering process.Specific process step is as described below：
（1）Rolling process：Using II type controlled rolling, 860 DEG C of two-stage start rolling temperature, 815 DEG C of finishing temperature, dry in the air steel thickness 290mm；
（2）Tempering and Quenching process：It is carried out in single-unit furnace.910 DEG C of normalizing temperature, heat insulating coefficient 2.0min/mm, heat preservation terminates
Afterwards, surface of steel plate water cooling is to 25 DEG C；640 DEG C of temperature, heat insulating coefficient 4.0min/mm.
Big thickness low-temperature high-toughness A633 MOD mechanical property of steel plate testing results obtained by this implementation are shown in Table 1, surface of steel plate
Metallographic structure is shown in that Fig. 5, the 1/4 position metallographic structure of steel plate plate thickness are shown in Fig. 6.
Ferrite+tempering bainite is organized as by the visible surface of steel plate of Fig. 5, Fig. 6 and 1/4 position of plate thickness, no banded structure,
Ferrite grain size is 15-25 μm, illustrates steel plate even tissue, and performance is uniform, fully meets the property requirement of client.
Embodiment 4
The big thickness low-temperature high-toughness A633 MOD steel plate thickness of the present embodiment is 250mm, steel plate chemical composition composition and its
Mass percentage is：C：0.14%, Mn：1.45%, P：0.010%, S：0.004%, Nb：0.032%, Al：0.035%, Ni：
0.25%, remaining is iron and inevitable impurity.
The big thickness low-temperature high-toughness A633 MOD Plate Production methods of the present embodiment include rolling and Tempering and Quenching process,
The Tempering and Quenching process uses normalizing+tempering process.Specific process step is as described below：
（1）Rolling process：Using II type controlled rolling, 860 DEG C of two-stage start rolling temperature, 820 DEG C of finishing temperature, dry in the air steel thickness 320mm；
（2）Tempering and Quenching process：It is carried out in single-unit furnace.920 DEG C of normalizing temperature, heat insulating coefficient 2.1min/mm, heat preservation terminates
Afterwards, surface of steel plate water cooling is to 60 DEG C；640 DEG C of temperature, heat insulating coefficient 3.2min/mm.
Big thickness low-temperature high-toughness A633 MOD mechanical property of steel plate testing results obtained by this implementation are shown in Table 1, surface of steel plate
Metallographic structure is shown in that Fig. 7, the 1/4 position metallographic structure of steel plate plate thickness are shown in Fig. 8.
Ferrite+tempering bainite is organized as by the visible surface of steel plate of Fig. 7, Fig. 8 and 1/4 position of plate thickness, no banded structure,
Ferrite grain size is 15-30 μm, illustrates steel plate even tissue, and performance is uniform, fully meets the property requirement of client.
Embodiment 5
The big thickness low-temperature high-toughness A633 MOD steel plate thickness of the present embodiment is 210mm, steel plate chemical composition composition and its
Mass percentage is：C：0.13%, Mn：1.53%, P：0.004%, S：0.002%, Nb：0.034%, Al：0.038%, Ni：
0.15%, remaining is iron and inevitable impurity.
The big thickness low-temperature high-toughness A633 MOD Plate Production methods of the present embodiment include rolling and Tempering and Quenching process,
The Tempering and Quenching process uses normalizing+tempering process.Specific process step is as described below：
（1）Rolling process：Using II type controlled rolling, 875 DEG C of two-stage start rolling temperature, 817 DEG C of finishing temperature, dry in the air steel thickness 350mm；
（2）Tempering and Quenching process：It is carried out in single-unit furnace.913 DEG C of normalizing temperature, heat insulating coefficient 1.9min/mm, heat preservation terminates
Afterwards, surface of steel plate water cooling is to 100 DEG C；648 DEG C of temperature, heat insulating coefficient 3.7min/mm.
Big thickness low-temperature high-toughness A633 MOD mechanical property of steel plate testing results obtained by this implementation are shown in Table 1.Surface of steel plate
Metallographic structure and 1/4 position metallographic structure of plate thickness are ferrite+tempering bainite, no banded structure, and ferrite grain size is
15-25 μm, illustrate steel plate even tissue, performance is uniform, fully meets the property requirement of client.Metallographic structure figure and implementation
Example 1-4 is similar, therefore omits.
Embodiment 6
The big thickness low-temperature high-toughness A633 MOD steel plate thickness of the present embodiment is 240mm, steel plate chemical composition composition and its
Mass percentage is：C：0.135%, Mn：1.42%, P：0.018%, S：0.001%, Nb：0.028%, Al：0.030%, Ni：
0.16%, remaining is iron and inevitable impurity.
The big thickness low-temperature high-toughness A633 MOD Plate Production methods of the present embodiment include rolling and Tempering and Quenching process,
The Tempering and Quenching process uses normalizing+tempering process.Specific process step is as described below：
（1）Rolling process：Using II type controlled rolling, 865 DEG C of two-stage start rolling temperature, 812 DEG C of finishing temperature, dry in the air steel thickness 350mm；
（2）Tempering and Quenching process：It is carried out in single-unit furnace.918 DEG C of normalizing temperature, heat insulating coefficient 2.2min/mm, heat preservation terminates
Afterwards, surface of steel plate water cooling is to 95 DEG C；645 DEG C of temperature, heat insulating coefficient 3.0min/mm.
Big thickness low-temperature high-toughness A633 MOD mechanical property of steel plate testing results obtained by this implementation are shown in Table 1.Surface of steel plate
Metallographic structure and 1/4 position metallographic structure of plate thickness are ferrite+tempering bainite, no banded structure, and ferrite grain size is
15-28 μm, illustrate steel plate even tissue, performance is uniform, fully meets the property requirement of client.Metallographic structure figure and implementation
Example 1-4 is similar, therefore omits.
Embodiment 7
The big thickness low-temperature high-toughness A633 MOD steel plate thickness of the present embodiment is 180mm, steel plate chemical composition composition and its
Mass percentage is：C：0.145%, Mn：1.40%, P：0.007%, S：0.004%, Nb：0.030%, Al：0.040%, Ni：
0.23%, remaining is iron and inevitable impurity.
The big thickness low-temperature high-toughness A633 MOD Plate Production methods of the present embodiment include rolling and Tempering and Quenching process,
The Tempering and Quenching process uses normalizing+tempering process.Specific process step is as described below：
（1）Rolling process：Using II type controlled rolling, 870 DEG C of two-stage start rolling temperature, 815 DEG C of finishing temperature, dry in the air steel thickness 260mm；
（2）Tempering and Quenching process：It is carried out in single-unit furnace.915 DEG C of normalizing temperature, heat insulating coefficient 2.1min/mm, heat preservation terminates
Afterwards, surface of steel plate water cooling is to 70 DEG C；642 DEG C of temperature, heat insulating coefficient 3.5min/mm.
Big thickness low-temperature high-toughness A633 MOD mechanical property of steel plate testing results obtained by this implementation are shown in Table 1.Surface of steel plate
Metallographic structure and 1/4 position metallographic structure of plate thickness are ferrite+tempering bainite, no banded structure, and ferrite grain size is
10-20 μm, illustrate steel plate even tissue, performance is uniform, fully meets the property requirement of client.Metallographic structure figure and implementation
Example 1-4 is similar, therefore omits.
1. big thickness low-temperature high-toughness A633 MOD mechanical property of steel plate testing results of table
Steel plate yield strength, tensile strength surplus capacity are larger as shown in Table 1, and 23% or more elongation percentage, -60 DEG C of impact flexibility are good,
In 50J or more.
Claims (9)
1. a kind of big thickness low-temperature high-toughness A633 MOD steel plates, it is characterised in that：The chemical composition of the steel plate forms and again
Measuring percentage composition is：C：0.13~0.15%, Mn：1.40~1.55%, P≤0.018%, S≤0.005%, Nb：0.028~
0.035%, Al：0.025~0.040%, Ni:0.15~0.25%, surplus is Fe and inevitable impurity.
2. big thickness low-temperature high-toughness A633 MOD steel plates according to claim 1, it is characterised in that：The steel plate thickness
For 180~250mm.
3. big thickness low-temperature high-toughness A633 MOD steel plates according to claim 1, it is characterised in that：The gold of the steel plate
Phase constitution is ferrite+tempering bainite.
4. big thickness low-temperature high-toughness A633 MOD steel plates according to claim 1, it is characterised in that：The steel plate surrender
Intensity >=345MPa, tensile strength >=485MPa, elongation percentage >=23%, -60 DEG C of impact of collision work(>=50J.
5. the production method of the big thickness low-temperature high-toughness A633 MOD steel plates as described in claim 1-4 any one, special
Sign is that the production method includes rolling and Tempering and Quenching process；The rolling process uses II type controlled rolling process；It is described
Tempering and Quenching process uses normalizing+tempering process.
6. the production method of big thickness low-temperature high-toughness A633 MOD steel plates according to claim 5, which is characterized in that institute
State 860~880 DEG C of rolling process two-stage start rolling temperature, 810~820 DEG C of finishing temperature；Dry in the air steel thickness >=H+70mm, wherein H
For finished steel thickness.
7. the production method of big thickness low-temperature high-toughness A633 MOD steel plates according to claim 5, which is characterized in that institute
State 910~920 DEG C, 1.8~2.2min/mm of heat insulating coefficient of Tempering and Quenching process normalizing temperature, water cooling of coming out of the stove to surface of steel plate
100 DEG C of temperature or less.
8. the production method of big thickness low-temperature high-toughness A633 MOD steel plates according to claim 6, which is characterized in that institute
State 640~650 DEG C of Tempering and Quenching process temperature, 3.0~4.0min/mm of heat insulating coefficient.
9. the production method of the big thickness low-temperature high-toughness A633 MOD steel plates according to claim 5-8 any one,
It is characterized in that, the Tempering and Quenching process carries out in single-unit furnace.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592339A (en) * | 2019-09-18 | 2019-12-20 | 舞阳钢铁有限责任公司 | High-strength and high-toughness lamellar tearing resistance SA299GrA simulation method |
| CN111020377A (en) * | 2019-11-16 | 2020-04-17 | 舞阳钢铁有限责任公司 | Heat treatment method for steel plate for low-temperature pressure container |
| CN114561528A (en) * | 2022-03-01 | 2022-05-31 | 舞阳钢铁有限责任公司 | Low-hardness easy-to-weld die-welding-resistant high-uniformity high-performance super-thick steel plate and production method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104561818A (en) * | 2014-12-31 | 2015-04-29 | 南阳汉冶特钢有限公司 | Super-thick steel plate with thickness of more than 150 mm for boiler drum and production method for super-thick steel plate |
-
2018
- 2018-05-09 CN CN201810439441.XA patent/CN108486490A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104561818A (en) * | 2014-12-31 | 2015-04-29 | 南阳汉冶特钢有限公司 | Super-thick steel plate with thickness of more than 150 mm for boiler drum and production method for super-thick steel plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592339A (en) * | 2019-09-18 | 2019-12-20 | 舞阳钢铁有限责任公司 | High-strength and high-toughness lamellar tearing resistance SA299GrA simulation method |
| CN111020377A (en) * | 2019-11-16 | 2020-04-17 | 舞阳钢铁有限责任公司 | Heat treatment method for steel plate for low-temperature pressure container |
| CN114561528A (en) * | 2022-03-01 | 2022-05-31 | 舞阳钢铁有限责任公司 | Low-hardness easy-to-weld die-welding-resistant high-uniformity high-performance super-thick steel plate and production method thereof |
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Application publication date: 20180904 |