Method for manufacturing oriented silicon steel
A production method, the technology of oriented silicon steel, applied in the field of iron and steel metallurgy, can solve the problems of increased production time and cost, reduced yield, and no research, etc., and achieve the effects of reduced high-temperature annealing time, reduced production time, and improved production efficiency
Active Publication Date: 2011-09-28
ANGANG STEEL CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The main reason may be that the production of oriented silicon steel by the three-time cold rolling method will lengthen the process, the process is complicated, the production time and cost will increase, and the yield will decrease. Considering the cost performance, there is no further research on the production of oriented silicon steel by the three-time cold rolling method
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] The technological process of the present invention is: smelting→slab→heating→hot rolling→first cold rolling→first intermediate annealing→secondary cold rolling→second intermediate annealing→three times cold rolling→MgO coating→high temperature annealing.
[0024] The specific method is to carry out vacuum smelting according to the components required by conventional oriented silicon steel, and cast it into a slab. After cooling to normal temperature, the surface treatment of the slab is carried out. The treated slab is put into a heating furnace for high temperature heating. Rolling and low-temperature coiling, which are characterized in that the rolling and treatment process adopts three cold rolling, two intermediate annealing, and one MgO coating production process, and the first intermediate annealing is used after the first cold rolling; the first intermediate annealing eliminates processing Stress and partial decarburization, the second intermediate annealing is pe...
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
Login to View More Abstract
The invention discloses a method for manufacturing directional silicon steel. The method is characterized in that a rolling and treating process adopts a manufacture process of triple cold rolling, twice intermediate annealing, and once MgO coating, and finally carrying out high temperature annealing. One-pass roll separating force in the triple rolling is reduced, the internal tissue of the steel is uniform, so the time for high temperature annealing is reduced by 20 to 30 percent, and a product with strong (110)[001] structure is finally obtained. The method not only can obviously improve the electromagnetic performance (iron loss reduces but magnetic induction increases), ensures that the iron loss P1.7 is reduced by about 0.08W / kg, ensures the magnetic induction B8 is improved by about 0.07T, not only ensures that the product is improved from half to one grade, but also ensures that the total production time is obviously reduced, the total production time is remarkably shortened, thereby improving the manufacture efficiency of the directional silicon steel.
Description
technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, and relates to a production method of silicon steel, in particular to a production method for improving the performance of oriented silicon steel. Background technique [0002] Oriented silicon steel can be divided into two types according to the cold rolling process and electromagnetic properties: ordinary magnetic induction oriented silicon steel (GO steel) and high magnetic induction oriented silicon steel (Hi-B steel). GO steels (with MnS as inhibitor) are usually produced by secondary medium reduction cold rolling. Hi-B steel usually adopts a large reduction ratio cold rolling method, which has high and stable magnetic properties (with AlN as an inhibitor); Hi-B steel can also be produced by a secondary medium reduction ratio cold rolling method, but has low magnetic properties. And unstable (with MnSe (or MnS) + Sb as inhibitor). [0003] At present, there is no report o...
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
Login to View More Patent Type & AuthorityPatents(China)
IPC IPC(8): C21D8/12C21D1/26C21D1/68
Inventor蒋奇武金文旭付勇军游清雷张静庞树芳张海利王晓达
OwnerANGANG STEEL CO LTD