Production method of non-oriented electrical steel coating semi-processed product
A technology of oriented electrical steel and production method, which is applied in the field of electrical steel production, can solve problems such as inability to obtain excellent electromagnetic properties, and achieve the effects of retaining excellent characteristics, continuous and efficient production, and saving energy consumption
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[0010] The present invention will be further described in the following examples.
[0011] The chemical composition of the cold rolled non-oriented silicon steel in the embodiment of the present invention is: C: 0.004%, Si: 1.14%, Mn: 0.33%, P: 0.12%, S: 0.002%, Als: 0.28%. The main production process flow is: converter smelting, RH vacuum refining, the billet is heated at 1120℃ and then rolled into a 2.2mm thick hot-rolled plate, the coiling temperature of the hot-rolled plate is 710℃, the hot-rolled plate is cold-rolled to 0.5mm, and the cold-rolled plate Annealed at 910℃×2min. The yield strength of the finished plate is 260Mpa, and the width of the finished plate is 1030mm. In the embodiment of the present invention, a set of five-roller tension-straightening device is added between the uncoiling and coiling process sections on the recoiling line, and the tension F applied to the finished steel plate satisfies: S×Rp 0.2 ≤F≤1.2×S×Rp 0.2 , As in Example 1, the tensile force F=1...
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