CN113088808A - Carbon-manganese-silicon steel plate for welding pressure vessel and production method thereof - Google Patents

Carbon-manganese-silicon steel plate for welding pressure vessel and production method thereof Download PDF

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Publication number
CN113088808A
CN113088808A CN202110217690.6A CN202110217690A CN113088808A CN 113088808 A CN113088808 A CN 113088808A CN 202110217690 A CN202110217690 A CN 202110217690A CN 113088808 A CN113088808 A CN 113088808A
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steel plate
rolling
manganese
carbon
pressure vessel
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Inventor
李建朝
李样兵
赵国昌
李�杰
袁锦程
吴艳阳
龙杰
庞辉勇
柳付芳
牛红星
尹卫江
侯敬超
王东阳
顾自有
赵紫娟
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Wuyang New Wide Heavy Steel Plate Co ltd
Wuyang Iron and Steel Co Ltd
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Wuyang New Wide Heavy Steel Plate Co ltd
Wuyang Iron and Steel Co Ltd
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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
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

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  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention relates to a carbon-manganese-silicon steel plate for welding a pressure container and a production method thereof, wherein the steel plate comprises the following chemical components in percentage by weight: c: 0.18-0.26%, Si: 0.18-0.65%, Mn: 0.92-1.72%, P is less than or equal to 0.008%, S is less than or equal to 0.002%, Cu: 0.30-0.40%, Ni: 0.25-0.35%, Cr: 0.25-0.35%, Mo is less than or equal to 0.10%, V is less than or equal to 0.10%, B: 0.003-0.005% and the balance of Fe and inevitable impurity elements. The content of the noble alloy elements added into the steel plate is relatively low, the smelting cost and the subsequent production cost are controlled to be low, and the market potential and the competitiveness are great.

Description

Carbon-manganese-silicon steel plate for welding pressure vessel and production method thereof
Technical Field
The invention belongs to the technical field of steel plate production, and particularly relates to a carbon-manganese-silicon steel plate for welding a pressure container and a production method thereof.
Background
The welding pressure vessel in petrochemical, coal chemical, power station, boiler and other industries usually needs to bear medium-high temperature, high pressure or strong corrosive medium, and the steel plate as the raw material must have good toughness matching and various excellent characteristics of high temperature and high pressure resistance, impact resistance, high temperature creep resistance, corrosion resistance and the like. In recent period, on one hand, the monitoring regulations of the pressure vessel in China are increasingly tightened day by day and the security of the pressure vessel equipment is continuously emphasized by the country; on the other hand, the size and complexity of the welding pressure vessel in China are increasing. For the above two reasons, the specifications, dimensions, and performance indexes, particularly low-temperature impact toughness, of steel sheets for pressure vessels are increasingly required by various major design houses and manufacturers. In order to meet the severe requirements of users, the research and development of a new generation of carbon-manganese-silicon series steel plate with high quality and low cost and special performance requirements is very urgent.
Disclosure of Invention
The invention aims to solve the technical problem of providing a carbon-manganese-silicon steel plate for welding a pressure container and a production method thereof.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the carbon-manganese-silicon steel plate for welding the pressure container is characterized by comprising the following chemical components in percentage by weight: c: 0.18-0.26%, Si: 0.18-0.65%, Mn: 0.92-1.72%, P is less than or equal to 0.008%, S is less than or equal to 0.002%, Cu: 0.30-0.40%, Ni: 0.25-0.35%, Cr: 0.25-0.35%, Mo is less than or equal to 0.10%, V is less than or equal to 0.10%, B: 0.003-0.005% and the balance of Fe and inevitable impurity elements.
In the prior art, the invention optimizes the proportion of each element in the steel, adopts multiple elements such as Cu, Ni, Cr, Mo and V for composite reinforcement, adds a small amount of B element capable of enhancing the hardenability of the steel plate, achieves the maximum effect of each element by less content and proportion of alloy elements, and ensures that the steel plate has stable and good performance. The Cr, Mo, Ni and V elements in the invention can enhance the hardenability of the steel and improve the strength, toughness and heat strength of the steel, but the addition of too much Cr, Mo, Ni and V elements can easily increase the alloy cost. The method adopts relatively less precious alloy elements to obtain relatively better internal performance; the prominent effect of adding a small amount of Cu in the steel is to improve the corrosion resistance of the common low alloy steel, and the strength and yield ratio of the steel can be improved by adding the Cu without adverse effect on the welding performance; trace B element can obviously improve the hardenability of the steel and further improve the uniformity of the full thickness performance of the steel plate.
Compared with the conventional production process, the content of the noble alloy elements added into the steel plate is relatively low, the smelting cost and the subsequent production cost are controlled to be low, and the market potential and the competitiveness are great.
Preferably, the weight percentage of Mo is 0.01-0.10%; and/or
The weight percentage content of V is 0.01-0.10%.
A production method of a carbon-manganese-silicon steel plate for welding a pressure container comprises the working procedures of smelting, die casting, steel rolling and heat treatment, and is characterized in that in the steel rolling working procedure, a plate blank is heated to 1255-1298 ℃ in a soaking furnace, the heating time coefficient is 9-13min/cm, and the plate blank is rolled after being heated.
Further, the steel rolling process adopts II-type controlled rolling, the starting rolling temperature of one stage is 1080-1150 ℃, and the reduction of each pass is 25-30 mm; the rolling temperature at the two stages is 940-970 ℃, and the reduction rate of each pass is 8-10%.
Further, in the steel rolling process, the final rolling temperature of the two-stage rolling is more than or equal to 900 ℃, the ACC cooling equipment is adopted for water cooling after the steel is completely rolled, and the temperature of the steel plate for returning red is controlled to be less than or equal to 500 ℃.
Further, the heat treatment process adopts quenching and tempering processes, wherein the quenching temperature is 870-; the tempering temperature is 600 ℃ and 630 ℃, and the total heating time is 3.0-4.0 min/mm.
Further, quenching, after heating the steel plate, cooling the steel plate with water to be less than or equal to 28 ℃.
Further, in the quenching water cooling process, the water quantity of the high-pressure section is 4000-3/h。
Further, in the smelting process, a converter or an electric furnace is adopted for primary smelting of the molten steel, and then refining and VD vacuum treatment are carried out through an LF furnace.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the addition amount of the alloy elements is relatively less, and the smelting cost is relatively lower; in addition, the heat treatment can be produced in various furnace types such as a quenching furnace, a normalizing furnace (with NAC function), a vehicle bottom furnace (with a quenching tank) and the like, and the production is easy to arrange.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to better illustrate the invention, the following examples are given by way of further illustration.
Example 1
A carbon-manganese-silicon steel plate for welding a pressure vessel comprises the following chemical components in percentage by weight: 0.18% of C, 0.18% of Si, 0.92% of Mn, 0.008% of P, 0.002% of S, 0.30% of Cu, 0.25% of Ni, 0.25% of Cr, 0.10% of Mo, 0.10% of V, 0.003% of B, and the balance of Fe and inevitable impurity elements.
The steel plate production process comprises the working procedures of smelting, die casting, steel rolling and heat treatment.
Smelting, wherein the molten steel is smelted by a converter for the first time, and then refined by an LF furnace and subjected to VD vacuum treatment.
Die casting process: and after the molten steel refining treatment is finished, transporting the molten steel to a die casting steel casting platform for casting to obtain a die cast ingot.
A steel rolling process, namely heating the plate blank to 1255 ℃ in a soaking furnace, wherein the heating time coefficient is 9min/cm, rolling after heating, adopting II-type controlled rolling, and rolling at the initial rolling temperature of 1080 ℃ at one stage, wherein the reduction of each pass is 25 mm; the initial rolling temperature of the two stages is 940 ℃, the reduction rate of each pass is 8%, the final rolling temperature of the two stages is 900 ℃, ACC cooling equipment is adopted for water cooling after complete rolling, and the temperature of the steel plate returning red is controlled to be 500 ℃.
The heat treatment process comprises quenching and tempering at 870 deg.C for 2.5min/mm, cooling to 28 deg.C, and quenchingThe water cooling process is carried out, and the water quantity of a high-pressure section is 4000m3H is used as the reference value. The tempering temperature is 630 ℃, and the total heating time is 3.0 min/mm.
Example 2
A carbon-manganese-silicon steel plate for welding a pressure vessel comprises the following chemical components in percentage by weight: 0.20% of C, 0.25% of Si, 1.00% of Mn, 0.007% of P, 0.002% of S, 0.33% of Cu, 0.26% of Ni, 0.27% of Cr, 0.09% of Mo, 0.08% of V, 0.003% of B, and the balance of Fe and inevitable impurity elements.
The steel plate production process comprises the working procedures of smelting, die casting, steel rolling and heat treatment.
Smelting, wherein the molten steel is smelted by a converter for the first time, and then refined by an LF furnace and subjected to VD vacuum treatment.
Die casting process: and after the molten steel refining treatment is finished, transporting the molten steel to a die casting steel casting platform for casting to obtain a die cast ingot.
A steel rolling procedure, namely heating the plate blank to 1260 ℃ in a soaking furnace, wherein the heating time coefficient is 10min/cm, rolling after heating, adopting II-type controlled rolling, and rolling at the beginning temperature of 1095 ℃ at one stage and the reduction of each pass of 26 mm; the initial rolling temperature of the two stages is 945 ℃, the reduction rate of each pass is 8.5 percent, the final rolling temperature of the two stages is 910 ℃, ACC cooling equipment is adopted for water cooling after complete rolling, and the temperature of the steel plate returning red is controlled to be 480 ℃.
The heat treatment process comprises quenching and tempering at 880 deg.C for 2.7min/mm, cooling the steel plate to 27.5 deg.C, and quenching with water at 4080m3H is used as the reference value. The tempering temperature is 625 ℃, and the total heating time is 3.2 min/mm.
Example 3
A carbon-manganese-silicon steel plate for welding a pressure vessel comprises the following chemical components in percentage by weight: 0.23% of C, 0.40% of Si, 1.32% of Mn, 0.006% of P, 0.002% of S, 0.35% of Cu, 0.29% of Ni, 0.30% of Cr, 0.08% of Mo, 0.07% of V, 0.004% of B, and the balance of Fe and inevitable impurity elements.
The steel plate production process comprises the working procedures of smelting, die casting, steel rolling and heat treatment.
Smelting, wherein the molten steel is smelted by a converter for the first time, and then refined by an LF furnace and subjected to VD vacuum treatment.
Die casting process: and after the molten steel refining treatment is finished, transporting the molten steel to a die casting steel casting platform for casting to obtain a die cast ingot.
A steel rolling procedure, namely heating the plate blank to 1277 ℃ in a soaking furnace, wherein the heating time coefficient is 11min/cm, rolling after heating, adopting II-type controlled rolling, and rolling at the starting temperature of 1100 ℃ in one stage and the reduction of each pass of 28 mm; the initial rolling temperature of the two stages is 958 ℃, the reduction rate of each pass is 9 percent, the final rolling temperature of the two stages is 920 ℃, ACC cooling equipment is adopted for water cooling after complete rolling, and the temperature of the steel plate returning red is controlled to be 470 ℃.
The heat treatment process comprises quenching and tempering at 900 deg.C for 2.8min/mm, cooling to 27 deg.C, and quenching with water flow of 4200m at high pressure stage3H is used as the reference value. The tempering temperature is 618 ℃, and the total heating time is 3.5 min/mm.
Example 4
A carbon-manganese-silicon steel plate for welding a pressure vessel comprises the following chemical components in percentage by weight: 0.25% of C, 0.55% of Si, 1.62% of Mn, 0.005% of P, 0.001% of S, 0.38% of Cu, 0.33% of Ni, 0.34% of Cr, 0.07% of Mo, 0.06% of V, 0.0045% of B, and the balance of Fe and inevitable impurity elements.
The steel plate production process comprises the working procedures of smelting, die casting, steel rolling and heat treatment.
Smelting, wherein the molten steel is smelted by a converter for the first time, and then refined by an LF furnace and subjected to VD vacuum treatment.
Die casting process: and after the molten steel refining treatment is finished, transporting the molten steel to a die casting steel casting platform for casting to obtain a die cast ingot.
A steel rolling procedure, namely heating the plate blank to 1289 ℃ in a soaking furnace, wherein the heating time coefficient is 12.5min/cm, rolling after heating, adopting II-type controlled rolling, and rolling at the initial rolling temperature of 1130 ℃ in one stage and the reduction of 29mm in each pass; the initial rolling temperature of the second stage is 965 ℃, the reduction rate of each pass is 9.5 percent, the final rolling temperature of the second stage is 930 ℃, and the temperature of the steel plate is 460 ℃ controlled by adopting ACC cooling equipment for water cooling after complete rolling.
The heat treatment process comprises quenching and tempering at 920 deg.C for 2.9min/mm, and adding steel plateCooling to 26.5 deg.C after heating, quenching with water at high pressure stage with water amount of 4400m3H is used as the reference value. The tempering temperature is 610 ℃, and the total heating time is 3.8 min/mm.
Example 5
A carbon-manganese-silicon steel plate for welding a pressure vessel comprises the following chemical components in percentage by weight: 0.26% of C, 0.65% of Si, 1.72% of Mn, 0.005% of P, 0.001% of S, 0.40% of Cu, 0.35% of Ni, 0.35% of Cr, 0.05% of Mo, 0.05% of V, 0.005% of B, and the balance of Fe and inevitable impurity elements.
The steel plate production process comprises the working procedures of smelting, die casting, steel rolling and heat treatment.
Smelting, namely smelting the molten steel by an electric furnace for the first time, and then refining by an LF furnace and carrying out VD vacuum treatment.
Die casting process: and after the molten steel refining treatment is finished, transporting the molten steel to a die casting steel casting platform for casting to obtain a die cast ingot.
A steel rolling procedure, namely heating the plate blank to 1298 ℃ in a soaking furnace, wherein the heating time coefficient is 13min/cm, rolling after heating, adopting II-type controlled rolling, and rolling at the initial rolling temperature of 1150 ℃ at one stage and the reduction of 30mm per pass; the initial rolling temperature of the two stages is 970 ℃, the reduction rate of each pass is 10 percent, the final rolling temperature of the two stages is 940 ℃, ACC cooling equipment is adopted for water cooling after complete rolling, and the temperature of the steel plate returning red is controlled to be 450 ℃.
The heat treatment process comprises quenching and tempering, wherein the quenching temperature is 930 deg.C, the total heating time is 3.0min/mm, the steel plate is cooled to 25 deg.C after heating, and the water amount in high-pressure section is 4500m3H is used as the reference value. The tempering temperature is 600 ℃, and the total heating time is 4.0 min/mm.
Example 6
A carbon-manganese-silicon steel plate for welding a pressure vessel comprises the following chemical components in percentage by weight: 0.19% of C, 0.20% of Si, 0.97% of Mn, 0.004% of P, 0.002% of S, 0.32% of Cu, 0.28% of Ni, 0.26% of Cr, 0.01% of Mo, 0.01% of V, 0.0033% of B, and the balance of Fe and inevitable impurity elements.
The steel plate production process comprises the working procedures of smelting, die casting, steel rolling and heat treatment.
Smelting, namely smelting the molten steel by an electric furnace for the first time, and then refining by an LF furnace and carrying out VD vacuum treatment.
Die casting process: and after the molten steel refining treatment is finished, transporting the molten steel to a die casting steel casting platform for casting to obtain a die cast ingot.
A steel rolling procedure, namely heating the plate blank to 1263 ℃ in a soaking furnace, wherein the heating time coefficient is 9.4min/cm, rolling after heating, adopting II-type controlled rolling, and rolling at the initial rolling temperature of 1088 ℃ at one stage and the reduction of 27mm in each pass; the initial rolling temperature of the two stages is 952 ℃, the reduction rate of each pass is 8.2 percent, the final rolling temperature of the two stages is 906 ℃, ACC cooling equipment is adopted for water cooling after complete rolling, and the temperature of the steel plate returning red is controlled to be 492 ℃.
The heat treatment process comprises quenching and tempering at 910 deg.C for 2.6min/mm, cooling to 26 deg.C, and quenching with water at high pressure stage of 4130m3H is used as the reference value. The tempering temperature is 605 ℃, and the total heating time is 3.3 min/mm.
Example 7
A carbon-manganese-silicon steel plate for welding a pressure vessel comprises the following chemical components in percentage by weight: 0.24% of C, 0.32% of Si, 1.19% of Mn, 0.007% of P, 0.001% of S, 0.39% of Cu, 0.31% of Ni, 0.31% of Cr, 0.03% of Mo, 0.03% of V, 0.0048% of B, and the balance of Fe and inevitable impurity elements.
The steel plate production process comprises the working procedures of smelting, die casting, steel rolling and heat treatment.
Smelting, namely smelting the molten steel by an electric furnace for the first time, and then refining by an LF furnace and carrying out VD vacuum treatment.
Die casting process: and after the molten steel refining treatment is finished, transporting the molten steel to a die casting steel casting platform for casting to obtain a die cast ingot.
A steel rolling procedure, namely heating the plate blank to 1292 ℃ in a soaking furnace, wherein the heating time coefficient is 11.6min/cm, rolling after heating, adopting II-type controlled rolling, and rolling at the initial rolling temperature of 1142 ℃ in one stage, wherein the reduction of each pass is 26 mm; the initial rolling temperature of the two stages is 968 ℃, the reduction rate of each pass is 9.7 percent, the final rolling temperature of the two stages is 934 ℃, ACC cooling equipment is adopted for water cooling after complete rolling, and the temperature of red returning of the steel plate is controlled to be 473 ℃.
The heat treatment process adopts quenching and tempering processes, the quenching temperature is 890 ℃, and the total temperature isHeating for 2.8min/mm, cooling the steel plate to 24 deg.C, quenching, and cooling with water at high pressure of 4300m3H is used as the reference value. The tempering temperature is 621 ℃, and the total heating time is 3.9 min/mm.
The yield strength, tensile strength, A50 elongation and AKV transverse impact energy at-30 ℃ were measured at 1/2 for the steel sheets produced in examples 1 to 7, and the results are shown in Table 1.
TABLE 1
Figure DEST_PATH_IMAGE002
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.

Claims (9)

1. The carbon-manganese-silicon steel plate for welding the pressure container is characterized by comprising the following chemical components in percentage by weight: c: 0.18-0.26%, Si: 0.18-0.65%, Mn: 0.92-1.72%, P is less than or equal to 0.008%, S is less than or equal to 0.002%, Cu: 0.30-0.40%, Ni: 0.25-0.35%, Cr: 0.25-0.35%, Mo is less than or equal to 0.10%, V is less than or equal to 0.10%, B: 0.003-0.005% and the balance of Fe and inevitable impurity elements.
2. The carbon-manganese-silicon steel plate for welding pressure vessels as claimed in claim 1, wherein the weight percentage of Mo is 0.01-0.10%; and/or
The weight percentage content of V is 0.01-0.10%.
3. The method for producing the carbon-manganese-silicon steel plate for welding the pressure vessel according to any one of claims 1 or 2, wherein the production process comprises the steps of smelting, die casting, steel rolling and heat treatment, and is characterized in that in the steel rolling step, the plate blank is heated to 1255-1298 ℃ in a soaking furnace, the heating time coefficient is 9-13min/cm, and the plate blank is rolled after being heated.
4. The method for producing the carbon-manganese-silicon steel plate for the welded pressure vessel as claimed in claim 3, wherein the steel rolling process adopts type II controlled rolling, the initial rolling temperature of one stage is 1080-1150 ℃, and the reduction of each stage is 25-30 mm; the rolling temperature at the two stages is 940-970 ℃, and the reduction rate of each pass is 8-10%.
5. The production method of the carbon-manganese-silicon steel plate for the welded pressure vessel as claimed in claim 3, wherein in the steel rolling process, the final rolling temperature of the two-stage rolling is not less than 900 ℃, the ACC cooling equipment is adopted for water cooling after the steel plate is completely rolled, and the temperature of the steel plate for red return is not more than 500 ℃.
6. The method for producing the carbon-manganese-silicon steel plate for welding the pressure vessel as claimed in claim 3, wherein the heat treatment process adopts quenching and tempering processes, the quenching temperature is 870-; the tempering temperature is 600 ℃ and 630 ℃, and the total heating time is 3.0-4.0 min/mm.
7. The method for producing the carbon-manganese-silicon steel plate for the welding pressure vessel as claimed in claim 6, wherein the quenching is carried out, and the steel plate is cooled to be less than or equal to 28 ℃ after being heated.
8. The method for producing the C-Mn-Si steel plate for welding the pressure vessel as claimed in claim 7, wherein the water amount in the high pressure section is 4000-4500m in the quenching water cooling process3/h。
9. The method for producing the carbon-manganese-silicon steel plate for the welded pressure vessel as claimed in claim 3, wherein in the smelting process, the molten steel is primarily smelted by a converter or an electric furnace, and then refined by an LF furnace and subjected to VD vacuum treatment.
CN202110217690.6A 2021-02-26 2021-02-26 Carbon-manganese-silicon steel plate for welding pressure vessel and production method thereof Pending CN113088808A (en)

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JP2002294339A (en) * 2001-03-29 2002-10-09 Sumitomo Metal Ind Ltd Method for producing high strength steel tube for air bag
CN107475620A (en) * 2017-07-26 2017-12-15 舞阳钢铁有限责任公司 Low-temperature pressure container quenching and tempering type A537Cl2 steel plates and its production method
US20190024206A1 (en) * 2015-12-23 2019-01-24 Posco Steel material having excellent hydrogen-induced cracking (hic) resistance for pressure vessel and manufacturing method therefor
CN110819878A (en) * 2019-10-23 2020-02-21 舞阳钢铁有限责任公司 Steel plate with excellent low-temperature toughness for explosive cladding and production method thereof
CN110846592A (en) * 2019-10-14 2020-02-28 舞阳钢铁有限责任公司 Molybdenum alloy steel plate for pressure container and production method thereof
CN111041385A (en) * 2019-12-25 2020-04-21 舞阳钢铁有限责任公司 SA517GrF steel plate for spent fuel storage tank and production method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002294339A (en) * 2001-03-29 2002-10-09 Sumitomo Metal Ind Ltd Method for producing high strength steel tube for air bag
US20190024206A1 (en) * 2015-12-23 2019-01-24 Posco Steel material having excellent hydrogen-induced cracking (hic) resistance for pressure vessel and manufacturing method therefor
CN107475620A (en) * 2017-07-26 2017-12-15 舞阳钢铁有限责任公司 Low-temperature pressure container quenching and tempering type A537Cl2 steel plates and its production method
CN110846592A (en) * 2019-10-14 2020-02-28 舞阳钢铁有限责任公司 Molybdenum alloy steel plate for pressure container and production method thereof
CN110819878A (en) * 2019-10-23 2020-02-21 舞阳钢铁有限责任公司 Steel plate with excellent low-temperature toughness for explosive cladding and production method thereof
CN111041385A (en) * 2019-12-25 2020-04-21 舞阳钢铁有限责任公司 SA517GrF steel plate for spent fuel storage tank and production method thereof

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