Hot Rolled Steel Plate

By definition, the ingot or billet is difficult to deform at room temperature, not easy to process, generally heated to 1100 ~ 1250℃ for rolling, this rolling process is called hot rolling. The temperature of hot rolled plate is high, so the deformation resistance is small, and large deformation can be achieved. Taking the rolling of steel plate as an example, the thickness of the general continuous casting billet is about 230mm, and after rough rolling and finishing rolling, the final thickness is 1-20mm. At the same time, due to the small width/thickness ratio of the steel plate, the dimensional accuracy requirement is relatively low, and the plate shape problem is not easy to appear, so the convexity is mainly controlled. For the requirements of the structure, it is generally achieved by controlling the rolling and cooling, that is, controlling the opening rolling temperature, the finishing rolling temperature and the coiling temperature to control the microstructure and mechanical properties of the strip steel.