Method for preparing low-cost oriented silicon steel by utilization of continuous annealing

The invention provides a method for preparing low-cost oriented silicon steel by utilization of continuous annealing, wherein the technological line comprises the following steps of smelting and casting, hot rolling, primary cold rolling, intermediate annealing, secondary cold rolling and continuous annealing. According to the method provided by the invention, a normalizing working procedure is eliminated on the premise of heating the oriented silicon steel at low temperature, and meanwhile the slow heating and high-temperature long-time annealing in the traditional technology is replaced by the continuous annealing, so that the production period is greatly reduced, and the purposes of reducing cost and improving efficiency are achieved. The magnetic performance of a finally prepared product is much higher than that of traditional non-oriented silicon steel, and is slightly lower than that of commercial oriented silicon steel. In some fields that the oriented silicon steel and the non-oriented silicon steel can be used in common, a better effect can be realized.