CN114101328A - Secondary cold rolling method for oriented silicon steel laboratory rolling mill - Google Patents
Secondary cold rolling method for oriented silicon steel laboratory rolling mill Download PDFInfo
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- CN114101328A CN114101328A CN202111183528.3A CN202111183528A CN114101328A CN 114101328 A CN114101328 A CN 114101328A CN 202111183528 A CN202111183528 A CN 202111183528A CN 114101328 A CN114101328 A CN 114101328A
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- silicon steel
- oriented 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
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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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses a secondary cold rolling method for an oriented silicon steel laboratory rolling mill, which comprises the steps of sampling → sample preparation → establishment of cold rolling procedures → secondary cold rolling of an experimental rolling mill. The invention aims to solve the technical problem of providing a secondary cold rolling method for an oriented silicon steel laboratory rolling mill.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a secondary cold rolling method for an oriented silicon steel laboratory rolling mill.
Background
Oriented silicon steel belongs to ferrite steel, is an important soft magnetic material applied to the manufacture of transformer cores, and is widely applied to the electronic and electric power industry. The market has been increasingly demanding in recent years, and its quality is also increasingly demanding. The high-quality oriented silicon steel is mainly characterized by excellent magnetic performance, in particular to two performance parameters of iron loss and magnetic induction intensity. Therefore, the ability to produce oriented silicon steels with lower core loss and higher magnetic induction is a hot spot of interest to the industry.
The silicon element content of the oriented silicon steel is basically between 2.9% and 3.5%, and the magnetic induction intensity of the oriented silicon steel is only related to the {110} <001> crystal orientation degree or the {110} <001> orientation deviation angle. <001> has a clear relationship with the average off-angle of the rolling direction and the magnetic induction intensity.
The production flow of the oriented silicon steel is long, the process is complex, and the process of each step has important influence on the final performance. The production efficiency and the product quality of the oriented silicon steel are improved, and a new process for developing high-efficiency, energy-saving and high-performance products becomes important work for developing the oriented silicon steel. Two cold rolling processes are needed in the production process of the CGO oriented silicon steel. The secondary cold rolling process of the oriented silicon steel is to roll the oriented silicon steel strip with the thickness of 0.63mm after decarburization annealing into a thin strip with the thickness of 0.27mm, and because the Si content is high and the steel strip is narrow, strip breakage is easy to occur during laboratory rolling. The method provided by the invention is used for developing the secondary cold rolling procedure of the oriented silicon steel narrow strip by using a cold rolling mill in a laboratory, and provides a material for the research of the subsequent oriented silicon steel high-temperature annealing process.
Disclosure of Invention
The invention aims to provide a secondary cold rolling method for an oriented silicon steel laboratory rolling mill, which provides more reliable samples and conditions for developing follow-up research.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a secondary cold rolling method for an oriented silicon steel laboratory rolling mill, which mainly comprises the following steps: sampling → sample preparation → establishment of cold rolling schedule → secondary cold rolling of an experimental rolling mill;
1) sampling
The experimental material is a CGO oriented silicon steel sample with the thickness of 0.63mm after decarburization and annealing
2) Sample preparation
The sample is sheared by a special oriented silicon steel plate shearing machine, and the target size of the sample is 650mm (rolling direction) multiplied by 30 mm. And lightly coating rolling oil on the surface layer of the sample to prepare for carrying out a secondary cold rolling experiment.
3) The cold rolling schedule is set up as follows:
compared with the prior art, the invention has the beneficial technical effects that:
the secondary cold-rolled sample of the oriented silicon steel prepared by the method provided by the invention meets the requirement of subsequent processing, and provides more reliable conditions for the laboratory research on the subsequent annealing process of the oriented silicon steel.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1(a) is a microstructure of an oriented silicon steel of example 1 of the present invention after secondary cold rolling;
FIG. 1(b) is a microstructure of an oriented silicon steel of example 2 of the present invention after secondary cold rolling;
FIG. 1(c) shows the microstructure of the oriented silicon steel of example 3 of the present invention after the secondary cold rolling.
Detailed Description
Example 1
The invention provides a secondary cold rolling method for an oriented silicon steel laboratory rolling mill, which mainly comprises the following steps: sampling → sample preparation → establishment of cold rolling schedule → secondary cold rolling of an experimental rolling mill;
1) sampling
The experimental material is a CGO oriented silicon steel sample with the thickness of 0.63mm after decarburization and annealing
2) Sample preparation
The sample is sheared by a special oriented silicon steel plate shearing machine, and the target size of the sample is 650mm (rolling direction) multiplied by 30 mm. And lightly coating rolling oil on the surface layer of the sample to prepare for carrying out a secondary cold rolling experiment.
3) Cold rolling schedule establishment
TABLE 2 Cold Rolling schedule
| Pass of rolling | Thickness before rolling (mm) | Post-rolling thickness (mm) | Reduction ratio (%) |
| 1 | 0.63 | 0.40 | 36.5 |
| 2 | 0.40 | 0.20 | 50.0 |
Example 2
The invention provides a secondary cold rolling method for an oriented silicon steel laboratory rolling mill, which mainly comprises the following steps: sampling → sample preparation → establishment of cold rolling schedule → secondary cold rolling of an experimental rolling mill;
1) sampling
The experimental material is a CGO oriented silicon steel sample with the thickness of 0.63mm after decarburization and annealing
2) Sample preparation
The sample is sheared by a special oriented silicon steel plate shearing machine, and the target size of the sample is 650mm (rolling direction) multiplied by 30 mm. And lightly coating rolling oil on the surface layer of the sample to prepare for carrying out a secondary cold rolling experiment.
3) Cold rolling schedule establishment
TABLE 3 Cold Rolling schedule
| Pass of rolling | Thickness before rolling (mm) | Post-rolling thickness (mm) | Reduction ratio (%) |
| 1 | 0.63 | 0.45 | 28.6 |
| 2 | 0.45 | 0.35 | 22.2 |
| 3 | 0.35 | 0.28 | 20.0 |
| 4 | 0.28 | 0.23 | 17.9 |
Example 3
The invention provides a secondary cold rolling method for an oriented silicon steel laboratory rolling mill, which mainly comprises the following steps: sampling → sample preparation → establishment of cold rolling schedule → secondary cold rolling of an experimental rolling mill;
1) sampling
The experimental material is a CGO oriented silicon steel sample with the thickness of 0.63mm after decarburization and annealing
2) Sample preparation
The sample is sheared by a special oriented silicon steel plate shearing machine, and the target size of the sample is 650mm (rolling direction) multiplied by 30 mm. And lightly coating rolling oil on the surface layer of the sample to prepare for carrying out a secondary cold rolling experiment.
3) Cold rolling schedule establishment
TABLE 3 Cold Rolling schedule
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 (1)
1. A secondary cold rolling method for an oriented silicon steel laboratory rolling mill is characterized by comprising the following steps: sampling → sample preparation → establishment of cold rolling schedule → secondary cold rolling of an experimental rolling mill; the method specifically comprises the following steps:
1) sampling
The experimental material is a CGO oriented silicon steel sample with the thickness of 0.63mm after decarburization and annealing
2) Sample preparation
The size of the sample is 650mm multiplied by 30mm in rolling direction; lightly coating rolling oil on the surface layer of the sample to prepare for carrying out a secondary cold rolling experiment;
3) the cold rolling schedule is as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111183528.3A CN114101328A (en) | 2021-10-11 | 2021-10-11 | Secondary cold rolling method for oriented silicon steel laboratory rolling mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111183528.3A CN114101328A (en) | 2021-10-11 | 2021-10-11 | Secondary cold rolling method for oriented silicon steel laboratory rolling mill |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534158A (en) * | 2012-02-03 | 2012-07-04 | 无锡华精新型材料有限公司 | Production process of high-precision cold-rolled oriented silicon steel strips |
| CN103741031A (en) * | 2013-12-27 | 2014-04-23 | 钢铁研究总院 | Thin slab casting and rolling process-based vanadium-containing ordinary oriented silicon steel and manufacturing method thereof |
| CN104726667A (en) * | 2013-12-23 | 2015-06-24 | 鞍钢股份有限公司 | Production method of medium thin slab continuous casting and continuous rolling low-temperature oriented silicon steel |
| CN104846177A (en) * | 2015-06-18 | 2015-08-19 | 北京科技大学 | Method for preparing low-cost oriented silicon steel by utilization of continuous annealing |
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2021
- 2021-10-11 CN CN202111183528.3A patent/CN114101328A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534158A (en) * | 2012-02-03 | 2012-07-04 | 无锡华精新型材料有限公司 | Production process of high-precision cold-rolled oriented silicon steel strips |
| CN104726667A (en) * | 2013-12-23 | 2015-06-24 | 鞍钢股份有限公司 | Production method of medium thin slab continuous casting and continuous rolling low-temperature oriented silicon steel |
| CN103741031A (en) * | 2013-12-27 | 2014-04-23 | 钢铁研究总院 | Thin slab casting and rolling process-based vanadium-containing ordinary oriented silicon steel and manufacturing method thereof |
| CN104846177A (en) * | 2015-06-18 | 2015-08-19 | 北京科技大学 | Method for preparing low-cost oriented silicon steel by utilization of continuous annealing |
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