Non-oriented electrical steel sheet and manufacturing method thereof
An electromagnetic steel plate, non-directional technology, applied in the direction of inorganic material magnetism, metal rolling, etc., can solve the problems of cost increase, alloy cost increase, etc., and achieve the effect of reducing iron loss
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0086] Containing C: 0.0022%, Si: 3.25%, Al: 0.60%, Mn: 0.27%, P: 0.02%, S: 0.0018%, N: 0.0021%, O: 0.0024%, Sn: 0.06%, and the rest A steel slab composed of Fe and unavoidable impurities was melted, heated at 1130° C. for 30 minutes, and then hot-rolled to obtain a hot-rolled steel sheet. The hot-rolled steel sheet was subjected to hot-rolled sheet annealing at 1000° C.×30 sec, and then cold-rolled to finish it into a cold-rolled steel sheet having a thickness of 0.15 to 0.30 mm. For the resulting cold-rolled steel sheet at H 2 :N 2 =30:70, the final annealing was performed at 1000° C.×10 sec in an atmosphere with a dew point of −50° C., and an insulating coating was applied to obtain a product plate.
[0087] Here, by adjusting the surface roughness of the rolling rolls in the final pass of cold rolling, the microroughness of the base steel surface of the product sheet is changed. Take a test piece of 280 mm x 30 mm from the obtained product plate, perform DC magnetic mea...
Embodiment 2
[0089] A steel slab containing the components shown in Table 1 and the balance consisting of Fe and unavoidable impurities was melted, heated at 1100° C. for 30 minutes, and then hot rolled to obtain a hot-rolled steel sheet. This hot-rolled steel sheet was subjected to hot-rolled sheet annealing at 980° C.×30 sec, and then cold-rolled to finish it into a cold-rolled steel sheet having a thickness of 0.15 mm. For the resulting cold-rolled steel sheet at H 2 :N 2 =20:80, the final annealing was performed at 980° C.×10 sec in an atmosphere having a dew point of −40° C., and an insulating coating was applied to form a product plate.
[0090]Here, the microroughness of the base steel surface of the product sheet is changed by adjusting the surface roughness of the rolling rolls in the final pass of cold rolling and performing dry rolling. For No. 2, the rolling temperature was set to 300° C., and the microroughness was further changed. Take a test piece of 280 mm × 30 mm from t...
Embodiment 3
[0094] A steel slab containing the components shown in Table 2 and the balance consisting of Fe and unavoidable impurities was melted, heated at 1100° C. for 30 minutes, and then hot rolled to obtain a hot rolled steel sheet. The hot-rolled steel sheet was annealed at 1000°C×120sec, cold-rolled to No.1 to 0.15mm, cold-rolled to No.2-12 to 0.17mm, and then HF+H 2 o 2 Chemical grinding was carried out in an aqueous solution until the thickness was 0.15 mm, and each was finished into cold-rolled steel sheets with a thickness of 0.15 mm. For the resulting cold-rolled steel sheet at H 2 :N 2 =30:70, the final annealing of 1000 degreeC x 30sec was performed in the atmosphere of dew point -50 degreeC, and the insulation coating was applied and the product plate was produced.
[0095] Take a test piece of 280 mm x 30 mm from the obtained product plate, and perform DC magnetic measurement by Epstein test, and measure hysteresis loss Wh at Bm=1.0T, f=400Hz 10 / 400 . In addition, aft...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More