Experiment on the influence of the inner roller profile of the furnace bottom roller on the bending tension of the strip steel

This study mainly analyzes the influence of factors such as the crown of the furnace roller, the length of the middle platform area of ​​the furnace roller, and the roughness of the roller surface on the buckling of the strip when heat treating thin strip in a continuous annealing furnace. The rotating furnace roller produces a compression effect on the width direction of the strip, which will cause the strip to bend and wrinkle. The wrinkles may cause thermal buckling after passing through the furnace roller. A formula for calculating the critical tension of buckling is derived. The formula shows that the critical buckling stress is proportional to [(strip thickness × yield strength)/(furnace roller crown × friction factor)]2.