Treatment of stainless or acid resistant steel - to band structure by cold rolling

摘要

Band structure, ie undulant cracking or ribbing parallel to the direction of rolling in Cr, possibly with Mo contg. steel, is eliminated by cold rolling the previously hot rolled strip. Esp. cold rolling takes place in two or more, pref. three passes, increasing deformation of the strip at each successive pass, and during the last pass the strip thickness is reduced by at least 60%. Each cold rolling pass is followed by reheating to a temp. A, point e.g. 700-920, pfef. 850 degrees C for =15 min.