Experimental Method of Stress Simulation of Rolling and Continuously Cast Slab by Plasticine

Abstract

A new experimental method for stress analysis of a steel slab in hot rolling or continuously cast slab by plasticine is developed. When plasticine is used for simulation of steel in high temperature, it is thought that not only the simulation of deformation, which has been made conventionally, but also the simulation of stress and force is capable. First, many kinds of stress detectors-miniature pressure cell, miniature frictional stress cell, and internal stress cell- are developed with success. Then an apparatus of simulation with 2 stand rolls equipped with above detectors is made, and it is possible to measure the following items:
(i) Distribution of stresses (pressure, circular frictional stress and axial frictional stress) on thesurface of a roll.
(ii) Distribution of internal stress (direction and magnitude of principal stress) in a workpiece.
(iii) Deformation of workpiece and load or torque acting on a roll.
Finally an experiment of rolling by single stand is made as an example. Deformation, load and torque, distributions of many kinds of stresses are clarified and the precision of the experimental method is confirmed.