Method for preparing medium-high carbon strip steel through semi-endless rolling and medium-high carbon strip steel

The invention provides a method for preparing medium-high carbon strip steel through semi-endless rolling and the medium-high carbon strip steel. The method comprises the steps that medium-high carbon semi-endless steel billets subjected to descaling treatment are provided; carrying out heating treatment for continuous rolling on the medium-high carbon semi-headless steel billet; the semi-headless steel billet subjected to heat treatment is subjected to continuous rolling, the medium-high carbon strip steel is obtained, at least five racks are adopted for continuous rolling in the continuous rolling process, the convexity of a working roller of at least the last rack is-100 microns to 200 microns, and the reduction rate is larger than 10%. According to the method for preparing the medium-high carbon strip steel through semi-endless rolling, the ultra-thin and wide medium-high carbon strip steel can be stably produced, and the medium-high carbon strip steel has the advantages of being good in plate shape, smal