Efficent use of the backup rolls on cold-reduction and temper-rolling mills for black plate

Abstract

One of the main factors affecting the flatness of cold-rolled strip is the wear of the backup rolls. To determine the effect of the magnitude and character of wear of these rolls on the parameters of cold reduction, we conducted studies on the 1400 six-stand, cold-reduction mill and the 1400 two-stand temper rolling mill at the Karaganda Metallurgical Combine in the rolling of a product 850 mm wide and 0.18-0.5 mm thick~ The initial shape of the top and bottom backup rolls on both mills was cylindrical. The conical chamfers on the edges of the roll bodies on the six-stand cold-reduction mill shortened the interroll contact zone. Two-step grooves were cut into the backup rolls on the temper-rolling millo