Experiments study on the rolling process for heavy disk

Roll forming is a flexible and low-cost technique for manufacturing axisymmetric parts. The disk-rolling process using the revamped radial–axial ring rolling mill has been developed from the radial–axial ring rolling process. This paper introduces the disk-rolling process in detail. Experiments of rolling process for heavy hollow disks were carried out on the revamped Wagner RAW500/400 ring rolling mill. Qualified heavy disks of Q235 steel and 0Cr11Ni2MoVNb steel were successful rolled. The interrelations of billets and disks dimensions were researched on these experiments. It was found that all the qualified disks have a big section spread. Furthermore, the expansion of the inner hole diameter and the outer diameter of the disk during the rolling process were studied. The result indicates that, in order to roll a qualified disk, there must be enough section spread deformation for the billet.