CN114107639A - Preparation method of common-grade rare earth oriented silicon steel - Google Patents
Preparation method of common-grade rare earth oriented silicon steel Download PDFInfo
- Publication number
- CN114107639A CN114107639A CN202111412556.8A CN202111412556A CN114107639A CN 114107639 A CN114107639 A CN 114107639A CN 202111412556 A CN202111412556 A CN 202111412556A CN 114107639 A CN114107639 A CN 114107639A
- Authority
- CN
- China
- Prior art keywords
- rolling
- silicon steel
- oriented silicon
- common
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- 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
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1222—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/34—Blowing through the bath
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
The invention discloses a preparation method of common-grade rare earth oriented silicon steel, which improves the magnetic performance of finished products, namely reduces iron loss and improves magnetic induction by adding rare earth elements and utilizing the effect of a second phase on a casting blank structure, a hot rolling structure, primary recrystallized grains and secondary recrystallized grains.
Description
Technical Field
The invention relates to a preparation method of common-grade rare earth oriented silicon steel.
Background
At present, the document of application number 2011110273632.1 discloses a full process for producing low-temperature oriented silicon steel, which aims to solve the technical problems of high slab heating temperature, short service life of a heating furnace, energy waste and the like of the traditional cold-rolled oriented silicon steel, but introduces less specific processes. The method has the advantages that the production process of the oriented silicon steel is introduced in detail, and the casting blank structure, the inclusion and the magnetic property are improved after the rare earth is added.
The document of application No. 201010597255.2 discloses a method for preparing ordinary oriented silicon steel, which is characterized in that a hot rolled plate is pretreated in a cold continuous rolling mode to improve the structure of the hot rolled plate, and the pretreatment of the hot rolled plate is matched with a normalizing process to improve the magnetic property of a product. The patent introduces the process and simultaneously analyzes the influences of rare earth on the improvement of the isometric crystal proportion of a casting blank, the refining and denaturation of inclusions, hot rolling tissues and the magnetic performance of a finished product.
The patent of application No. 201510845174.2 discloses a method for producing a copper-containing low-temperature high-magnetic-induction oriented silicon steel, which obtains more inhibitors by controlling the content of Als and N, Sn elements in raw material components, realizes the effect of improving secondary recrystallization, and thus improves the magnetic performance, but introduces less introduction to a hot rolling process. The method has the advantages that the casting blank structure is refined, the hot rolling recrystallization structure is increased, the primary recrystallization grains are refined, and the growth of the secondary recrystallization grains with the Gaussian texture is promoted through the second phase action of the rare earth.
Disclosure of Invention
The invention aims to provide a preparation method of common-grade rare earth oriented silicon steel, which improves the magnetic property of finished products, namely reduces iron loss and improves magnetic induction by adding rare earth elements and utilizing the effect of a second phase on a casting blank structure, a hot rolling structure, primary recrystallized grains and secondary recrystallized grains.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a preparation method of common-grade rare earth oriented silicon steel, which comprises the following steps:
(1) pretreating molten iron: after the molten iron is subjected to desulfurization pretreatment, the content of S is less than or equal to 0.003 percent;
(2) converter steelmaking: the converter adopts the whole process of bottom blowing nitrogen, low-sulfur steel scrap and adding alloys such as copper plates, and the tapping temperature is more than or equal to 1620 ℃;
(3) RH refining: nitrogen is circulated in the whole process, and meanwhile, silicon-manganese nitride alloy is added according to the in-place nitrogen sample; the vacuum treatment time is more than or equal to 25min, and the pure degassing time is more than or equal to 5 min;
(4) continuous casting: electromagnetic stirring and soft reduction are adopted, the pulling speed is controlled at 0.85m/min, and the isometric crystal proportion of the casting blank is ensured;
(5) a heating process: the heating stage II comprises 40min of heating, 1290 +/-5 ℃, 50min of soaking time, 1300 +/-5 ℃, 240 min-320 min of in-furnace time and 1300 +/-10 ℃ of out-furnace temperature;
(6) the hot rolling process comprises the following steps: the thickness of the hot-rolled intermediate billet is 40mm, the first-pass rolling reduction of rough rolling is more than 50mm, the F1 rolling reduction is more than or equal to 50%, the outlet temperature of rough rolling R2 is more than or equal to 1100 ℃, the finish rolling temperature is 950 +/-15 ℃, and the coiling temperature is 550 +/-15 ℃;
(7) acid washing: controlling the temperature of the acid liquor to be 80-85 ℃, and the speed of the process section to be 50-70 m/min;
(8) primary cold rolling: carrying out primary cold rolling on a twenty-high rolling mill until the rolling thickness is 0.63mm, wherein the reduction rate is 72.6 percent, and the rolling is carried out for 4 times in total;
(9) decarburization and annealing: the content of C element in steel is reduced to below 30 ppm;
(10) secondary cold rolling: carrying out secondary cold rolling on a twenty-high rolling mill until the thickness of a finished product is 0.27mm, wherein the reduction rate is about 57%, and carrying out rolling for 2 times;
(11) coating: coating MgO separant on the surface of the steel strip;
(12) high-temperature annealing: maintaining the temperature at 1200 ℃ for purification annealing;
(13) leveling, stretching and annealing: adding proper tension, flattening, stretching and annealing at 800 ℃.
Further, the chemical components in percentage by mass comprise: c: 0.025 to 0.040 percent, and Si: 3.00% -3.25%, Mn: 0.15% -0.25%, P: less than or equal to 0.015 percent, S: 0.006% -0.011%, Als: 0.010% -0.020%, Cu: 0.45-0.55%, N: 0.0080-0.0110%, and the rest is Fe and inevitable impurities.
Further, the chemical components in percentage by mass comprise: c: 0.032%, Si: 3.12%, Mn: 0.195%, P: 0.012%, S: 0.0073%, Als: 0.0194%, Cu: 0.52%, N: 0.0085%, and the balance of Fe and inevitable impurities.
Further, the chemical components in percentage by mass comprise: c: 0.035%, Si: 3.22%, Mn: 0.20%, P: 0.013%, S: 0.0068%, Als: 0.0201%, Cu: 0.48%, N: 0.0082%, and the balance of Fe and inevitable impurities.
Further, the chemical components in percentage by mass comprise: c: 0.029%, Si: 3.25%, Mn: 0.22%, P: 0.011%, S: 0.0078%, Als: 0.0203%, Cu: 0.50%, N: 0.0089%, and the balance of Fe and inevitable impurities.
The principle of decarburization is H2O+C＝H2+ CO, the decarburizing atmosphere is a wet ammonia decomposition gas, the decarburizing being to ensure a single alpha phase at the time of the subsequent high temperature annealing. The addition of the rare earth increases the degree of disappearance of fibrous structures of the silicon steel after primary annealing, the proportion of fine grains is increased, the structures are in a fine and uniform state, convenient conditions are provided for the growth of Gaussian texture in the high-temperature annealing process, the magnetic characteristics are favorably improved, and the iron loss is reduced. The coating is to coat MgO separant on the surface of the steel strip to prevent the steel strip from being bonded during coiling and high-temperature annealing; during high-temperature annealing, MgO reacts with the SiO2 oxide film on the surface of the steel strip to form a magnesium silicate bottom layer, and during high-temperature purification annealing, desulfurization and deoxidation reactions are promoted. High-temperature annealing is carried out at 1200 ℃ for heat preservation and purification annealing, sulfur and nitrogen in steel are removed, and meanwhile secondary grains are swallowed and dispersed to form residual primary grains, so that the secondary grain structure is more complete, and grain boundaries are flatter. After rare earth is added, small crystal grains are gradually reduced after high-temperature annealing, the size of the crystal grains is gradually increased, the magnetic property is favorably improved, and the iron loss is reduced. After coiling and high-temperature annealing, the steel strip is deformed and bulged in the width direction under the action of thermal stress, so that flattening, stretching and annealing are required, proper tension is added, flattening, stretching and annealing are carried out at 800 ℃, and the insulating coating is well sintered.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention adopts reasonable components and process design, and improves the magnetic property of the silicon steel by the action of the rare earth elements.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 shows a rare earth-added casting blank structure;
FIG. 2 shows a hot rolled structure with rare earth added;
FIG. 3 shows the morphology and elemental composition of rare earth precipitates;
fig. 4 is a rare earth textured.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
The embodiment comprises the following chemical components in percentage by weight: c: 0.025 to 0.040 percent, and Si: 3.00% -3.25%, Mn: 0.15% -0.25%, P: less than or equal to 0.015 percent, S: 0.006% -0.011%, Als: 0.010% -0.020%, Cu: 0.45-0.55%, N: 0.0080-0.0110%, and the balance of Fe and inevitable impurities, wherein the mass fraction is 100%. The specific process comprises the following steps:
pretreating molten iron: after the molten iron desulphurization pretreatment, the S content is less than or equal to 0.003 percent.
Converter steelmaking: the converter adopts the whole process of bottom blowing nitrogen, low-sulfur steel scrap, adding copper plate and other alloys, and the tapping temperature is more than or equal to 1620 ℃.
RH refining: and circulating nitrogen in the whole process, and adding the silicon-manganese nitride alloy according to the in-place nitrogen sample. The vacuum treatment time is more than or equal to 25min, and the pure degassing time is more than or equal to 5 min.
Continuous casting: electromagnetic stirring and soft reduction are adopted, the pulling speed is controlled at 0.85m/min, and the isometric crystal proportion of the casting blank is ensured.
A heating process: the heating time of the second heating stage is 40min, the second heating degree is 1290 +/-5 ℃, the soaking time is 50min, the soaking temperature is 1300 +/-5 ℃, the in-furnace time is 240 min-320 min, and the out-furnace temperature is 1300 +/-10 ℃.
The hot rolling process comprises the following steps: the thickness of the hot-rolled intermediate billet is 40mm, the first-pass rolling reduction of rough rolling is more than 50mm, the F1 reduction rate is more than or equal to 50%, the outlet temperature of rough rolling R2 is more than or equal to 1100 ℃, the finish rolling temperature is 950 +/-15 ℃, and the coiling temperature is 550 +/-15 ℃.
Acid washing: the temperature of the acid liquor is controlled to be 80-85 ℃, and the speed of the process section is 50-70 m/min.
Primary cold rolling: the cold rolling is carried out on a twenty-high rolling mill for 4 times in total until the rolling diameter is 0.63mm and the reduction rate is about 72.6%.
Decarburization and annealing: the content of C element in the steel is reduced to below 30 ppm.
Secondary cold rolling: and (3) carrying out secondary cold rolling on a twenty-high rolling mill until the thickness of a finished product is 0.27mm, wherein the reduction rate is about 57%, and carrying out rolling for 2 times.
Coating: coating MgO separant on surface of steel strip
High-temperature annealing: and (4) keeping the temperature at 1200 ℃ for purification annealing.
Leveling, stretching and annealing: adding proper tension, flattening, stretching and annealing at 800 ℃.
The chemical composition content of each example is shown in table 1; the heating process parameters are shown in Table 2; the hot rolling process parameters are shown in Table 3; the pickling parameters and the carbon content left after decarburization are shown in Table 4; the magnetic properties of the finished product are shown in Table 5.
TABLE 1 chemical composition of the smelt (wt%)
TABLE 2 heating Process parameters
TABLE 3 Hot Rolling Process parameters
| Examples | Rough rolling R2 temperature DEG C | The final rolling temperature is DEG C | Coiling temperature C |
| 1 | 1105 | 948 | 562 |
| 2 | 1108 | 953 | 558 |
| 3 | 1102 | 956 | 549 |
TABLE 4 Pickling Process parameters and decarburization carbon residue
| Examples | Acid liquor temperature C | Speed m/min of process section | The rest of carbon content% |
| 1 | 82 | 65 | 0.0023 |
| 2 | 85 | 62 | 0.0025 |
| 3 | 83 | 66 | 0.0019 |
TABLE 5 magnetic Properties of the finished products
| Examples | Average iron loss P (W/kg) | Average magnetic induction J (T) |
| 1 | 1.123 | 1.887 |
| 2 | 1.136 | 1.881 |
| 3 | 1.127 | 1.882 |
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (5)
1. A preparation method of common-grade rare earth oriented silicon steel is characterized by comprising the following steps:
(1) pretreating molten iron: after the molten iron is subjected to desulfurization pretreatment, the content of S is less than or equal to 0.003 percent;
(2) converter steelmaking: the converter adopts the whole process of bottom blowing nitrogen, low-sulfur steel scrap and adding alloys such as copper plates, and the tapping temperature is more than or equal to 1620 ℃;
(3) RH refining: nitrogen is circulated in the whole process, and meanwhile, silicon-manganese nitride alloy is added according to the in-place nitrogen sample; the vacuum treatment time is more than or equal to 25min, and the pure degassing time is more than or equal to 5 min;
(4) continuous casting: electromagnetic stirring and soft reduction are adopted, the pulling speed is controlled at 0.85m/min, and the isometric crystal proportion of the casting blank is ensured;
(5) a heating process: the heating stage II comprises 40min of heating, 1290 +/-5 ℃, 50min of soaking time, 1300 +/-5 ℃, 240 min-320 min of in-furnace time and 1300 +/-10 ℃ of out-furnace temperature;
(6) the hot rolling process comprises the following steps: the thickness of the hot-rolled intermediate billet is 40mm, the first-pass rolling reduction of rough rolling is more than 50mm, the F1 rolling reduction is more than or equal to 50%, the outlet temperature of rough rolling R2 is more than or equal to 1100 ℃, the finish rolling temperature is 950 +/-15 ℃, and the coiling temperature is 550 +/-15 ℃;
(7) acid washing: controlling the temperature of the acid liquor to be 80-85 ℃, and the speed of the process section to be 50-70 m/min;
(8) primary cold rolling: carrying out primary cold rolling on a twenty-high rolling mill until the rolling thickness is 0.63mm, wherein the reduction rate is 72.6 percent, and the rolling is carried out for 4 times in total;
(9) decarburization and annealing: the content of C element in steel is reduced to below 30 ppm;
(10) secondary cold rolling: carrying out secondary cold rolling on a twenty-high rolling mill until the thickness of a finished product is 0.27mm, wherein the reduction rate is about 57%, and carrying out rolling for 2 times;
(11) coating: coating MgO separant on the surface of the steel strip;
(12) high-temperature annealing: maintaining the temperature at 1200 ℃ for purification annealing;
(13) leveling, stretching and annealing: adding proper tension, flattening, stretching and annealing at 800 ℃.
2. The method for preparing common-grade rare-earth oriented silicon steel according to claim 1, wherein the common-grade rare-earth oriented silicon steel comprises the following chemical components in percentage by mass: c: 0.025 to 0.040 percent, and Si: 3.00% -3.25%, Mn: 0.15% -0.25%, P: less than or equal to 0.015 percent, S: 0.006% -0.011%, Als: 0.010% -0.020%, Cu: 0.45-0.55%, N: 0.0080-0.0110%, and the rest is Fe and inevitable impurities.
3. The method for preparing common-grade rare-earth oriented silicon steel according to claim 2, wherein the common-grade rare-earth oriented silicon steel comprises the following chemical components in percentage by mass: c: 0.032%, Si: 3.12%, Mn: 0.195%, P: 0.012%, S: 0.0073%, Als: 0.0194%, Cu: 0.52%, N: 0.0085%, and the balance of Fe and inevitable impurities.
4. The method for preparing common-grade rare-earth oriented silicon steel according to claim 2, wherein the common-grade rare-earth oriented silicon steel comprises the following chemical components in percentage by mass: c: 0.035%, Si: 3.22%, Mn: 0.20%, P: 0.013%, S: 0.0068%, Als: 0.0201%, Cu: 0.48%, N: 0.0082%, and the balance of Fe and inevitable impurities.
5. The method for preparing common-grade rare-earth oriented silicon steel according to claim 2, wherein the common-grade rare-earth oriented silicon steel comprises the following chemical components in percentage by mass: c: 0.029%, Si: 3.25%, Mn: 0.22%, P: 0.011%, S: 0.0078%, Als: 0.0203%, Cu: 0.50%, N: 0.0089%, and the balance of Fe and inevitable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111412556.8A CN114107639A (en) | 2021-11-25 | 2021-11-25 | Preparation method of common-grade rare earth oriented silicon steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111412556.8A CN114107639A (en) | 2021-11-25 | 2021-11-25 | Preparation method of common-grade rare earth oriented silicon steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114107639A true CN114107639A (en) | 2022-03-01 |
Family
ID=80372905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111412556.8A Withdrawn CN114107639A (en) | 2021-11-25 | 2021-11-25 | Preparation method of common-grade rare earth oriented silicon steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114107639A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959175A (en) * | 2022-06-13 | 2022-08-30 | 包头钢铁（集团）有限责任公司 | Method for smelting acid-soluble aluminum and nitrogen narrow components in Hi-B steel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3522110A (en) * | 1966-02-17 | 1970-07-28 | Nippon Steel Corp | Process for the production of coldrolled steel sheets having excellent press workability |
| JP2011080140A (en) * | 2009-09-14 | 2011-04-21 | Nippon Steel Corp | Thin cast slab for non-oriented silicon steel sheet excellent in magnetic characteristic, and method for manufacturing non-oriented silicon steel sheet |
| CN102560048A (en) * | 2010-12-17 | 2012-07-11 | 鞍钢股份有限公司 | Preparation process of common oriented silicon steel |
| CN103695619A (en) * | 2012-09-27 | 2014-04-02 | 宝山钢铁股份有限公司 | Manufacturing method of high-magnetic-induction common-oriented silicon steel |
| CN103882289A (en) * | 2014-03-25 | 2014-06-25 | 新万鑫（福建）精密薄板有限公司 | Production method for manufacturing cold-rolled oriented silicon steel with high magnetic strength by using generally oriented steel raw material |
| CN110777299A (en) * | 2019-11-21 | 2020-02-11 | 安徽工业大学 | Ce-containing high-magnetic-induction non-oriented silicon steel and preparation method thereof |
| CN111560554A (en) * | 2020-05-06 | 2020-08-21 | 包头钢铁（集团）有限责任公司 | Preparation method of rare earth non-oriented silicon steel |
-
2021
- 2021-11-25 CN CN202111412556.8A patent/CN114107639A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3522110A (en) * | 1966-02-17 | 1970-07-28 | Nippon Steel Corp | Process for the production of coldrolled steel sheets having excellent press workability |
| JP2011080140A (en) * | 2009-09-14 | 2011-04-21 | Nippon Steel Corp | Thin cast slab for non-oriented silicon steel sheet excellent in magnetic characteristic, and method for manufacturing non-oriented silicon steel sheet |
| CN102560048A (en) * | 2010-12-17 | 2012-07-11 | 鞍钢股份有限公司 | Preparation process of common oriented silicon steel |
| CN103695619A (en) * | 2012-09-27 | 2014-04-02 | 宝山钢铁股份有限公司 | Manufacturing method of high-magnetic-induction common-oriented silicon steel |
| CN103882289A (en) * | 2014-03-25 | 2014-06-25 | 新万鑫（福建）精密薄板有限公司 | Production method for manufacturing cold-rolled oriented silicon steel with high magnetic strength by using generally oriented steel raw material |
| CN110777299A (en) * | 2019-11-21 | 2020-02-11 | 安徽工业大学 | Ce-containing high-magnetic-induction non-oriented silicon steel and preparation method thereof |
| CN111560554A (en) * | 2020-05-06 | 2020-08-21 | 包头钢铁（集团）有限责任公司 | Preparation method of rare earth non-oriented silicon steel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959175A (en) * | 2022-06-13 | 2022-08-30 | 包头钢铁（集团）有限责任公司 | Method for smelting acid-soluble aluminum and nitrogen narrow components in Hi-B steel |
| CN114959175B (en) * | 2022-06-13 | 2024-03-08 | 包头钢铁（集团）有限责任公司 | Method for smelting narrow components of acid-soluble aluminum and nitrogen in Hi-B steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112609130B (en) | High-grade non-oriented silicon steel and production method thereof | |
| CN103695619B (en) | A kind of manufacture method of high magnetic strength common orientation silicon steel | |
| CN101545072B (en) | Method for producing oriented silicon steel having high electromagnetic performance | |
| CN106167875B (en) | A kind of strength and ductility product is more than 20GPa% economical high strength cold-rolled TRIP steel and preparation method thereof | |
| CN112143974B (en) | Production method of non-oriented silicon steel and non-oriented silicon steel | |
| CN101845582B (en) | Production method of high magnetic induction oriented silicon steel | |
| CN107502819B (en) | A kind of 600MPa grades of 0.6mm or less thin gauge cold-rolled biphase steel and preparation method thereof | |
| CN111455282B (en) | Quenching distribution steel with tensile strength more than or equal to 1500MPa produced by adopting short process and method | |
| JP2021502489A (en) | Non-oriented electrical steel sheet with excellent magnetic properties and its manufacturing method | |
| CN116791009B (en) | Large-thickness steel plate suitable for ultra-large heat input welding and production method thereof | |
| CN113755750B (en) | Production method of phosphorus-containing high-magnetic-induction non-oriented silicon steel | |
| CN114000064B (en) | Ultrahigh-strength hot-rolled steel strip with thickness less than 4mm and production method thereof | |
| CN108504952B (en) | The method of thin slab continuous casting and rolling production new-energy automobile non-oriented electrical steel | |
| CN114107639A (en) | Preparation method of common-grade rare earth oriented silicon steel | |
| CN115522129B (en) | 330 MPa-level wide-width thin-specification high-quality hot rolled enamel steel and production method thereof | |
| CN111334653A (en) | High magnetic induction oriented silicon steel and preparation method thereof | |
| CN111057828B (en) | High-oxygen enamel steel and production method thereof | |
| CN109136761A (en) | A kind of 980MPa grades high ductility low-density automobile austenitic steel and preparation method thereof | |
| JP3448454B2 (en) | High-strength cold-rolled steel sheet with excellent surface properties and formability, and method for producing the same | |
| CN115369329B (en) | Wide-width thin-specification high-surface-quality hot-rolled deep-drawn enamel steel and production method thereof | |
| CN116377320B (en) | Ultrahigh-strength steel with high strength and plastic product for cold rolling automobile and manufacturing method thereof | |
| CN109082596B (en) | Non-oriented silicon steel with low iron loss and high magnetic polarization strength and preparation method thereof | |
| JP7392849B2 (en) | Method for producing grain-oriented electrical steel sheets and rolling equipment for producing electrical steel sheets | |
| CN115478209B (en) | Hot-rolled pickled enamel steel with good drawing performance and production method thereof | |
| CN117230289A (en) | Non-oriented silicon steel and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220301 |