Tube rolling using a piercing mill-plug mill-sizing mill sequence

Abstract

In collaboration with the Chelyabinsk Tube-Rolling Mill, the All-Union MachineBuilding Correspondence Institute has developed a rolling technology and made investigations into the efficient redistribution of deformation between the mills when rolling thick-walled tubes in carbon steels on the 140 tube-rolling line. The line includes an annular heating furnace, a piercing mill with mushroom-shaped rollers and axial delivery, an automatic mill, a three-roll plug mill with axial delivery, and a twelvestand sizing and extension mill.