Non-oriented electrical steel plate and production method thereof

Abstract

The invention relates to a non-oriented electrical steel plate Which comprises the following components in percentage by mass: less than or equal to 0.0060 percent of C, 0.60 to 0.80 percent of Si, 0.20 to 0.40 percent of Mn, less than or equal to 0.10 percent of P, less than or equal to 0.0080 percent of S, 0.015 to 0.025 percent of Als, 0.001 to 0.002 percent of B, and the balance of Fe and unavoidable impurity elements. The production method comprises the following steps of smelting in a converter, argon blowing to steel ladle, RH vacuum treatment, refining of an LF furnace, continuous casting of a sheet billet, heat equalizing through a tunnel, fine rolling, cooling, coiling, acid pickling, cold rolling and continuous annealing. Compared with the prior art, the method is high in magnetic induction and low in iron loss. A manufacturing process for producing the non-oriented electrical steel plate by continuously casting and continuously rolling the sheet billet is provided for the first time, and the technical support is provided for production of a novel non-oriented electrical steel hot-rolling raw material with excellent environmental-protection performance by utilizing a sheet billet continuous-casting and continuous rolling production line.

Description

technical field [0001] The method relates to an electrical steel plate and a production method thereof, in particular to a non-oriented electrical steel plate and a method for producing the electrical steel plate by using a thin slab continuous casting and rolling process. Background technique [0002] Thin slab continuous casting and rolling process, as one of the new manufacturing processes of plate and strip products in the iron and steel industry, has developed rapidly at home and abroad in recent years. However, due to reasons such as equipment configuration and immature technology, the thin slab continuous casting and rolling production line has no precedent for producing this type of electrical steel, and cannot provide a large amount of this type of electrical steel plate that is urgently needed by the market. Contents of the invention [0003] The purpose of this method is to overcome the shortcomings of the above-mentioned prior art, provide a non-oriented electr...

AI Technical Summary

Problems solved by technology

However, due to reasons such as equipment configuration and immature technology, the thin slab continuous casting and rolling production line has no precedent for producing this type of electrical steel, and cannot provide a large amount of this type of electrical steel plate that is urgently needed by the market.