Ways to improve the processes of longitudinal rolling on a pipe rolling plant with a plug mill to reduce metal consumption and increase production output

The paper describes the results of implementing modified designs of the working tools of a plug rolling mill. The plug design is modified to improve the rolling of the pipe wall thickness. The design of the bottom guide tool (the inlet trough of the mill) is improved to eliminate metal ruptures at the rear ends of thin-walled pipes, as well as to reduce downtime and rejection as unfinished products. The economic indicators of the proposed designs implemented in the longitudinal rolling process are presented.