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Problems of Reconstructing Mechatronic Systems of a Plate Mill During Implementing Shaped Slabbing Technology

The paper emphasizes the relevance of reconstructing plate mill 2800 in order to implement the shaped slabbing technology. It was shown that the largest reserves for reducing metal losses caused by side and end (butt) cutoff can be ensured by forming a double conical shape on metal ends. Such rolling is performed in separate runs during broaching and width breakdown. The major problems of implementation are related to equipping the stand with hydraulic screwdown devices. This paper presents the general provisions of the developed method for computation of the performance of screwdown devices during shaped rolling, considering the change in elastic properties of metal during deformation. Also, the paper suggests using combined screwdown devices with overmounted hydraulic cylinders. The developed method and metal shape control system versus the rolled metal length are presented.