CN114807742B - High-alloy non-oriented electrical steel and preparation method and application thereof - Google Patents
High-alloy non-oriented electrical steel and preparation method and application thereof 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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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
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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
- C21D8/12—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
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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
- C21D8/12—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
- C21D8/1233—Cold 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
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
-
- 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
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1266—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest between cold rolling steps
-
- 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
Abstract
The application relates to the technical field of non-oriented steel, in particular to high-alloy non-oriented electrical steel and a preparation method and application thereof; the method comprises the following steps: obtaining a casting blank; heating a casting blank before rolling, hot rolling, pickling, first cold rolling, trimming, intermediate annealing, second cold rolling and finished product annealing to obtain non-oriented electrical steel without edge cracking; wherein the speed of the edge cutting is 100-500 m/min; the electrical steel is prepared by the method; the application comprises the following steps: the electrical steel is used for preparing a driving motor of a new energy automobile; by changing the production process, the casting blank is hot-rolled to form a steel plate, the normalizing process steps are saved, the toughness of the sample steel plate before cold rolling can be improved, the steel plate after hot rolling and cold rolling is subjected to edge cutting, the thickness of the steel plate after hot rolling and cold rolling is obviously reduced, the difficulty of edge cutting is reduced, the problems of edge cutting knife breakage and edge cutting cracking can be prevented under the action of high-speed shearing, and the edge cracking of electrical steel is avoided.
Description
Technical Field
The application relates to the technical field of non-oriented steel, in particular to high-alloy non-oriented electrical steel and a preparation method and application thereof.
Background
With the gradual implementation of relevant policies of energy conservation and environmental protection, the new energy automobile industry will enter a vigorous development stage, and the driving motor is one of the core components of the new energy automobile, the quality of the driving motor determines the quality of the new energy automobile, and the demand of high-quality non-oriented electrical steel, which is one of the raw materials of the driving motor, is significantly increased by the high-quality driving motor, wherein the high-quality non-oriented electrical steel needs to have the characteristics of low loss and high strength, and the high-alloy electrical steel can have the advantages, so that the high-alloy electrical steel becomes the choice of more and more electrical steel manufacturing enterprises.
The raw material components of the current high-alloy non-oriented electrical steel are limited to 3.3 to 5.5 mass percent of Si and 0.5 to 1.6 mass percent of Al, and the main production mode is as follows: steel making → hot rolling → trimming → acid pickling normalizing → cold rolling → annealing, but the hot rolled steel coil has trimming difficulty and is easy to be unqualified in trimming; the normalized pickling after the edge cutting leads to the edge cracking of the electrical steel and influences the use of the steel.
Therefore, how to avoid the edge cracking of the electrical steel is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The application provides a high-alloy non-oriented electrical steel, and a preparation method and application thereof, which aim to solve the technical problem that edge cracking of the electrical steel in the prior art cannot be effectively avoided.
In a first aspect, the present application provides a method of making a high alloy, non-oriented electrical steel, the method comprising:
obtaining a casting blank;
heating a casting blank before rolling, hot rolling, acid washing, first cold rolling, trimming, intermediate annealing, second cold rolling and finished product annealing to obtain non-oriented electrical steel without edge cracking;
wherein the speed of the edge cutting is less than or equal to 500m/min.
Optionally, the final rolling thickness of the second cold rolling is 0.20mm to 0.35mm.
Optionally, the temperature of the intermediate annealing is 900 ℃ to 1020 ℃.
Optionally, the transmission speed of the intermediate annealed steel plate is 50-120 m/min.
Optionally, the final rolling thickness of the first cold rolling is 0.5mm to 0.8mm.
Optionally, the hot rolling end point rolling thickness is 1.5 mm-2.6 mm, and the hot rolling end point temperature is 700-1000 ℃.
Optionally, the annealing temperature of the finished product is 900-1050 ℃, and the transmission speed of the steel plate for annealing the finished product is 50-120 m/min.
In a second aspect, the present application provides a high alloy non-oriented electrical steel prepared by the method of any one of claims 1 to 7.
Optionally, the chemical composition of the electrical steel comprises, by mass fraction: si:3.3% -5.5%, al:0.5% -1.6%, mn:0.10 to 0.90 percent of the total weight of the alloy, less than or equal to 0.02 percent of P, less than or equal to 0.003 percent of N, less than or equal to 0.003 percent of Ti, and the balance of Fe and inevitable impurities.
In a third aspect, the present application provides a use of a high alloy non-oriented electrical steel, the use comprising: the electrical steel of the second aspect is used for preparing a driving motor of a new energy automobile.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the embodiment of the application provides a preparation method of high alloy non-oriented electrical steel, through changing production technology, the casting blank forms the steel sheet through the hot rolling, save the normalizing process step simultaneously, can improve the toughness of cold rolling former appearance steel sheet, through cold rolling back side cut again, because the steel sheet thickness through hot rolling and cold rolling is showing and is reducing, thereby the degree of difficulty of side cut has been reduced, under the effect of high-speed shearing, can prevent that the side cut from collapsing the sword and the problem of side cut limit fracture, thereby the fracture of electrical steel limit portion has been avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a method provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In one embodiment of the present application, as shown in fig. 1, there is provided a method of making a high alloy, non-oriented electrical steel, the method comprising:
s1, obtaining a casting blank;
s2, heating a casting blank before rolling, hot rolling, pickling, first cold rolling, trimming, intermediate annealing, second cold rolling and finished product annealing to obtain non-oriented electrical steel without edge cracking;
wherein the speed of the edge cutting is less than or equal to 500m/min.
In the application, the reason that the trimming speed is less than or equal to 500m/min is that 500m/min is the capacity limit of the existing equipment.
In some alternative embodiments, a second cold rolling is included between the trim and the finish annealing;
the final rolling thickness of the second cold rolling is 0.20-0.35 mm.
In the application, the positive effect that the final rolling thickness of the second cold rolling is 0.20-0.35 mm is that the electromagnetic performance of the product can be better ensured within the range of the final rolling thickness; when the thickness is less than the end value of the range, namely when the thickness is less than 0.20mm, the rolling reduction rate is larger, and when the thickness is greater than the end value of the range, namely when the thickness is more than 0.35mm, the rolling reduction rate is too small, and the larger or smaller rolling reduction rate is unfavorable for the electromagnetic performance.
In some alternative embodiments, the temperature of the intermediate annealing is 900 ℃ to 1020 ℃. In the application, the positive effect that the temperature of the intermediate annealing is 900-1020 ℃ is that the smooth generation of the oriented steel finished product can be ensured in the range.
In some alternative embodiments, the transmission speed of the intermediate annealed steel plate is 50m/min to 120m/min. In the application, the positive effect that the transmission speed of the steel plate for intermediate annealing is 50-120 m/min is to ensure that the intermediate annealing of the steel plate is more sufficient.
As an alternative embodiment, the final rolling thickness of the first cold rolling is 0.5mm to 0.8mm.
In the application, the positive effect that the final rolling thickness of the first cold rolling is 0.5 mm-0.8 mm is that within the thickness range, the efficiency of trimming and the quality of trimming can be ensured; when the thickness value is larger than the maximum value of the end point of the range, the adverse effect is that the thickness is too large, the tearing area is large in the trimming process, and the trimming quality is not stable enough; when the thickness value is smaller than the minimum value of the end point of the range, the adverse effect is that the thickness is too thin, and under the same coil weight, the length of the steel coil is too long, so that the trimming efficiency is low.
As an alternative embodiment, the final rolling thickness of the hot rolling is 1.5mm to 2.6mm, and the final temperature of the hot rolling is 700 ℃ to 1000 ℃.
In the application, the positive effect that the final rolling thickness of the hot rolling is 1.5 mm-2.6 mm is that the hot rolling can be fully ensured within the thickness range.
The positive effect of the end temperature of the hot rolling being 700 ℃ to 1000 ℃ is that the steel can be ensured to be fully hot rolled within the temperature range.
As an optional implementation mode, the annealing temperature of the finished product is 900-1050 ℃, and the transmission speed of the steel plate for annealing the finished product is 50-120 m/min.
In the application, the annealing temperature of the finished product is 900-1050 ℃, and the positive effect is that the rolled and formed steel product can be completely annealed in the temperature range.
The transmission speed of the finished product annealed steel plate is 50-120 m/min, and the positive effect is that the complete annealing of the rolled and formed steel product can be ensured within the transmission speed range.
In one embodiment of the present application, a high alloy, non-oriented electrical steel is provided that is produced by the method.
As an alternative embodiment, the chemical composition of the electrical steel comprises, in mass fraction: si:3.3% -5.5%, al:0.5% -1.6%, mn:0.10 to 0.90 percent of the total weight of the alloy, less than or equal to 0.02 percent of P, less than or equal to 0.003 percent of N, less than or equal to 0.003 percent of Ti, and the balance of Fe and inevitable impurities.
The positive effect of the mass fraction of Si being 3.3-5.5% is that when the silicon content is in a higher range, the process of edge cutting production is needed, i.e. when the silicon content is higher than 3.3%, the cold rolling process before edge cutting is usually adopted, and when the silicon content is higher than 5.5%, the industrial cold rolling production is basically difficult to realize.
The positive effect of the mass fraction of Al being 0.5-1.6% is that the basic performance of the electrical steel can be ensured within the mass fraction range.
The positive effect that the mass fraction of Mn is 0.10-0.90% is that the basic performance of the electrical steel can be ensured within the mass fraction range.
The positive effect that P is less than or equal to 0.02 percent is that the content of harmful element P can be ensured to be small enough in the range.
The positive effect of N less than or equal to 0.003 percent is that the content of harmful element N can be ensured to be small enough in the range.
The positive effect of Ti less than or equal to 0.003 percent is that the content of harmful element Ti can be ensured to be small enough in the range.
In one embodiment of the present application, there is provided a use of a high alloy non-oriented electrical steel, the use comprising: the electrical steel is used for preparing a driving motor of a new energy automobile.
Example 1
A method of making a high alloy non-oriented electrical steel, the method comprising:
s1, obtaining a casting blank;
s2, heating a casting blank before rolling, hot rolling, pickling, first cold rolling, trimming, intermediate annealing, second cold rolling and finished product annealing to obtain non-oriented electrical steel without edge cracking;
wherein the speed of the edge cutting is less than or equal to 500m/min.
The final rolling thickness of the second cold rolling is 0.35mm.
The temperature of the intermediate annealing is 1000 ℃. The transmission speed of the intermediate annealed steel plate is 100m/min.
The final rolling thickness of the first cold rolling is 0.80mm.
The hot rolling end point rolling thickness is 2.0mm, and the hot rolling end point temperature is 800 ℃.
The annealing temperature of the finished product is 1000 ℃, and the transmission speed of the steel plate for annealing the finished product is 100m/min.
A high alloy, non-oriented electrical steel having a chemical composition comprising, in mass fractions: si:3.8%, al:0.8%, mn:0.6 percent of the total weight of the alloy, less than or equal to 0.02 percent of P, less than or equal to 0.003 percent of N, less than or equal to 0.003 percent of Ti, and the balance of Fe and inevitable impurities.
Example 2
Comparing example 2 with example 1, example 2 differs from example 1 in that:
the final rolling thickness of the second cold rolling is 0.20mm.
The temperature of the intermediate annealing is 900 ℃.
The transmission speed of the intermediate annealed steel plate is 50m/min.
The final rolling thickness of the first cold rolling is 0.50mm.
The hot rolling end point rolling thickness is 1.5mm, and the hot rolling end point temperature is 700 ℃.
The annealing temperature of the finished product is 900 ℃, and the transmission speed of the steel plate for annealing the finished product is 50m/min.
A high alloy, non-oriented electrical steel having a chemical composition comprising, in mass fractions: si:3.3%, al:0.5%, mn:0.10 percent of the total weight of the alloy, less than or equal to 0.02 percent of P, less than or equal to 0.003 percent of N, less than or equal to 0.003 percent of Ti, and the balance of Fe and inevitable impurities.
Example 3
Comparing example 3 with example 1, example 3 differs from example 1 in that:
the final rolling thickness of the second cold rolling is 0.25mm.
The temperature of the intermediate annealing was 1020 ℃.
The transmission speed of the intermediate annealed steel plate is 120m/min.
The final rolling thickness of the first cold rolling is 0.65mm.
The hot rolling end point rolling thickness is 2.6mm, and the hot rolling end point temperature is 1000 ℃.
The annealing temperature of the finished product is 1050 ℃, and the transmission speed of the steel plate for annealing the finished product is 120m/min.
Comparative example 1
Comparative example 1 is compared to example 1, and comparative example 1 differs from example 1 in that:
the mass fraction of Si was 5.6%.
Comparative example 2
Comparative example 2 was compared with example 1, and comparative example 2 and example 1 differed in that:
the mass fraction of Si was 3.2%.
The method adopts a process route without trimming, and comprises the following specific steps:
s1, obtaining a casting blank;
s2, heating the casting blank before rolling, hot rolling, normalizing pickling, cold rolling and annealing the finished product to obtain the non-oriented electrical steel without edge cracking.
Comparative example 3
Comparative example 3 was compared with example 1, and comparative example 3 and example 1 differed in that:
the adopted process route is as follows:
s1, obtaining a casting blank;
and S2, heating the casting blank before rolling, hot rolling, trimming, normalizing pickling, cold rolling and annealing the finished product to obtain the non-oriented electrical steel without edge cracking.
Comparative example 4
Comparative example 4 was compared with example 1, and comparative example 4 differs from example 1 in that:
the adopted process route is as follows:
s1, obtaining a casting blank;
and S2, heating the casting blank before rolling, hot rolling, trimming, normalizing pickling, cold rolling and annealing the finished product to obtain the non-oriented electrical steel without edge cracking.
Related experiments:
the electrical steels obtained in examples 1 to 3 and comparative examples 1 to 4 were collected, and the properties of each electrical steel were examined, and the results are shown in Table 1.
Test methods of the related experiments:
whether the edge part is cracked: and under the condition of sufficient light, judging by adopting manual visual inspection.
TABLE 1 EXAMPLES AND COMPARATIVE EXAMPLES
Table 1 specific analysis:
by changing the production process route, the casting blank is hot-rolled to form a steel plate, the normalizing process steps are saved, the toughness of the steel plate before cold rolling can be improved, the steel plate after cold rolling is trimmed, the thickness of the steel plate after hot rolling and cold rolling is obviously reduced, the difficulty of trimming is reduced, the problems of edge breakage and edge cracking of the trimmed edge can be prevented under the action of high-speed shearing, and the edge cracking of the electrical steel is avoided.
One or more technical solutions in the embodiments of the present application at least have the following technical effects or advantages:
(1) The method provided by the embodiment of the application is different from the preparation of traditional electrical steel, through omitting normalization, the trimming is arranged after first cold rolling, so that the difficulty of trimming can be reduced, the quality of trimming is improved, the problems of rolling, belt breakage and the like caused by edge cracking in the rolling process are avoided, or secondary trimming is required due to overlarge cracking after rolling, and the material loss is increased.
(2) The method provided by the embodiment of the application can finally obtain the non-oriented electrical steel product with the thickness of 0.20-0.35 mm.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A method of making a high alloy non-oriented electrical steel, the method comprising:
obtaining a casting blank;
heating a casting blank before rolling, hot rolling, pickling, first cold rolling, trimming and intermediate annealing, second cold rolling and finished product annealing to obtain non-oriented electrical steel without edge cracking; wherein the speed of the edge cutting is less than or equal to 500m/min, the final rolling thickness of the hot rolling is 1.5mm to 2.6mm, the final rolling thickness of the first cold rolling is 0.5mm to 0.8mm, the final rolling thickness of the second cold rolling is 0.20mm to 0.35mm, and the chemical components of the electrical steel comprise: si:3.8% -5.5%, al:0.5% -1.6%, mn:0.10 to 0.90 percent of the total weight of the alloy, less than or equal to 0.02 percent of P, less than or equal to 0.003 percent of N, less than or equal to 0.003 percent of Ti, and the balance of Fe and inevitable impurities.
2. The method of claim 1, wherein the temperature of the intermediate anneal is from 900 ℃ to 1020 ℃.
3. The method according to claim 1, wherein the transmission speed of the intermediate annealed steel sheet is 50m/min to 120m/min.
4. The method of claim 1, wherein the hot rolling has an end point temperature of 700 ℃ to 1000 ℃.
5. The method of claim 1, wherein the temperature of the finished product annealing is 900 ℃ to 1050 ℃, and the steel plate transmission speed of the finished product annealing is 50m/min to 120m/min.
6. A high alloy non-oriented electrical steel, characterized in that it is produced by the method according to any one of claims 1-5.
7. Use of a high alloy non-oriented electrical steel, characterized in that the use comprises: the electrical steel according to claim 6 is used for preparing a driving motor of a new energy automobile.
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| JPH0686626B2 (en) * | 1989-10-23 | 1994-11-02 | 新日本製鐵株式会社 | Method for manufacturing hot rolled sheet for high-grade non-oriented electrical steel sheet |
| CN1258608C (en) * | 2003-10-27 | 2006-06-07 | 宝山钢铁股份有限公司 | Method for manufacturing cold-rolled orientation-free electrical sheet |
| CN103510012A (en) * | 2012-06-28 | 2014-01-15 | 宝山钢铁股份有限公司 | Manufacturing method of secondary-cold-rolling shadow mask strip steel in thin specification |
| KR101977510B1 (en) * | 2017-12-26 | 2019-08-28 | 주식회사 포스코 | Non-oriented electrical steel sheet having exelleant magnetic properties low deviation of thickness and method of manufacturing the same |
| CN109825775B (en) * | 2019-04-04 | 2020-03-27 | 中山市中圣金属板带科技有限公司 | Cold-rolled non-oriented electrical steel 35WD1900 and production method thereof |
| CN110565022B (en) * | 2019-10-15 | 2021-06-01 | 马鞍山钢铁股份有限公司 | Method for manufacturing high-grade non-oriented electrical steel |
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