Method for manufacturing high-silicon steel sheet containing novel composite inhibitors
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A composite inhibitor and high-silicon steel technology is applied in the field of metal material preparation to achieve the effects of excellent surface quality, good application prospects and universal applicability
Inactive Publication Date: 2012-12-19
UNIV OF SCI & TECH BEIJING
View PDF2 Cites 10 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, these technologies are only applied to the production of grain-oriented silicon steel containing 3.5% silicon, an...
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0012] The chemical composition (wt%) of high silicon steel is: Si: 4.5, Nb: 0.1; B: 0.1, Mn: 0.01, S: 0.012, P: 0.015, C: 0.020, Al: 0.003, the rest is Fe and unavoidable inclusions. The high silicon steel hot-rolled plate with a thickness of 3.0mm is heat-treated, kept at 1200°C for 3 hours, oil-cooled; warm-rolled, the rolling temperature is 750°C, the final rolling temperature is 250°C, and a 0.6mm plate is obtained. The warm-rolled sheet was heat-treated at 500° C. for 5 minutes, cooled with salt water, and then cold-rolled to obtain a high-silicon steel cold-rolled sheet with a thickness of 0.6 mm.
Embodiment 2
[0014] The chemical composition (wt%) of high silicon steel is: Si: 6.5, Nb: 0.3; B: 0.2, Mn: 0.01, S: 0.01, P: 0.01, C: 0.02, Al: 0.001, the rest is Fe and unavoidable inclusions. Carry out heat treatment on the high-silicon steel hot-rolled plate with a thickness of 2.0mm, keep it at 1000°C for 2 hours, and cool it in salt water; warm rolling, the starting temperature is 700°C, and the final rolling temperature is 300°C to obtain a 0.2mm thick plate, and the warm-rolled plate is subjected to 30 minutes , heat treatment at 800°C, water cooling, and then cold rolling to obtain a high-silicon cold-rolled sheet with a thickness of 0.05mm.
Embodiment 3
[0016] The chemical composition (wt%) of high silicon steel is: Si: 7.0, Nb: 0.15; B: 0.3, Mn: 0.02, S: 0.01, P: 0.02, C: 0.04, Al: 0.001, the rest is Fe and unavoidable inclusions. Carry out heat treatment on the high-silicon steel hot-rolled plate with a thickness of 4.0mm, keep it at 900°C for 0.5 hours, and water-cool; ℃ heat treatment, salt water cooling, and then cold rolling to a high-silicon cold-rolled sheet with a thickness of 0.3mm.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
Thickness
aaaaa
aaaaa
Thickness
aaaaa
aaaaa
Thickness
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses a method for manufacturing a high-silicon steel sheet containing novel composite inhibitors, and belongs to the field of metal materials. High-silicon steel comprises (by wt%) from 4.5 to 7.0 of Si, from 0.05 to 0.9 of Nb, from 0.05 to 0.3 of B, from 0.01 to 0.05 of Mn, from 0.010 to 0.020 of S, from 0.010 to 0.020 of P, from 0.020 to 0.040 of C, from 0.003 to 0.020 of Al and the balance Fe and inevitable impurities. The method mainly includes adding proper quantities of Nb and B elements to be used as the composite inhibitors for thinning as-cast grains in a vacuum melting stage; then forging to form a sheet blank; carrying out hot rolling for the sheet blank until the thickness of the sheet blank ranges from 1.0mm to 4.0mm; carrying out diffusion annealing for the sheet blank; then carrying out warm-rolling for the sheet blank for 5 to 30 minutes to obtain a sheet with the thickness ranging from 0.2mm to 0.8mm; carrying out heat treatment for the sheet at the temperature ranging from 500 DEG C to 800 DEG C; and carrying out cold rolling to obtain the high-silicon steel sheet with the thickness ranging from 0.05mm to 0.6mm. The Nb and B elements are added to form the inhibitors capable of obviously suppressing the grains from growing in various stages, so that room-temperature brittleness of the high-silicon steel sheet is improved, and cold rolling yield of the high-silicon steel sheet is increased. In addition, productivity is increased on the basis of improving plasticity of materials by the quick heat treatment after the warm-rolling, and the high-silicon steel sheet is finally manufactured by the cold rolling. Besides, the manufactured cold-rolled sheet is excellent in surface quality and good in shape.
Description
technical field [0001] The invention belongs to the technical field of metal material preparation, and relates to a method for preparing a high-silicon steel thin plate added with a novel composite inhibitor. Background technique [0002] Fe-Si alloy has excellent soft magnetic properties. Fe-Si alloy with a silicon content of 6.5% (mass percentage) has excellent soft magnetic properties such as high magnetic permeability, low iron loss, and close to zero magnetostriction coefficient. Wide range of potential uses. [0003] Si in commonly used Fe-Si alloys is less than 3.5%, because with the increase of Si content, especially after more than 4%, due to B2 (FeSi) and D0 3 (Fe 3 With the appearance of ordered phases such as Si), the alloy becomes hard and brittle, which sharply deteriorates the machinability and makes it difficult to process it into thin plates by conventional rolling methods. For a long time, people have been committed to the development of Fe-6.5%Si alloy ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more