Abstract：Relying on the product development tasks of R2 grade TMBP (tin mill black plate) in a CAPL line, through whole sampling of strip in trial production and off-line measurement of three-dimensional topography on surface, the genetic and change laws of surface roughness in two-stand temper mill rolling were revealed by ways of industrial test methods. The prediction model of genetic and change laws were established by the use of stepwise regression method based on a large number of measured data. According to the variation of strip surface roughness obtained from the experiment and the prediction model, the process strategy, set models and process parameters of roughness control were set up, furthermore a set of roughness control technology of R2 grade TMBP were obtained. Applied the technology to actual production, the R2 grade TMBP was successfully developed at the first time in China. The roughness control accuracy of R grade TMBP was significantly increased, the pass rate which meet the roughness accuracy window [0.37µm,0.47µm] come to 65.33%, color difference after roll spreading was effectively removed, enormous economic and social benefits were created.
2010, Vol. 45 
