1994 Volume 80 Issue 8 Pages 635-640
In the previous paper, the author has reported that the surface brightness is expressed as three functions of the inlet oil film thickness and the surface brightnesses of roll and sheet before rolling, and a system for estimating and controlling the surface brightness before rolling can be constructed by using this relation. In this paper, a new system for estimating the surface brightness after each pass in actual mill for cold rolling of stainless steel is proposed by developing this relation. In the new system, the estimation is carried out as follows: (1) Preparation of as hot rolled specimen, (2) Input of rolling conditions at each pass in actual mill, (3) Calculation of the inlet oil film thickness at each pass, (4) Determination of rolling conditions at each pass in laboratory mill, (5) Rolling in laboratory mill and measurement of surface properties of rolled specimen, (6) Surface brightness after final pass.
By using the new estimating system, the surface properties after each pass are measured and it is seen that the system is able to estimate the surface brightness after each pass in actual mill.
