ROLLING METHOD FOR CLAD METALLIC MATERIAL

摘要

PURPOSE:To decrease the difference in the elongation between the two layers of a clad metallic material and the camber in a rolling direction by disposing a material having the poor elongatability to a small diameter roll side and supplying a lubricating oil to alargediameter roll side at a rate lower than to the small-diameter roll side. CONSTITUTION:The material 21 on the side of the poor elongatability of a rolling stock 20 for the clad metallic material is rolled by a small-diameter roll 11 and the material 22 on the side of the good elongatability is rolled by a large-diameter roll 12. The rate of the oil to be supplied from a lubricating oil supplying device 16 on the large-diameter roll 12 side is made lower than the rate of the lubricating oil to be supplied from a lubricating oil supplying device 15 on the small-diameter roll 11 side. The camber in the rolling direction is thereby decreased and the rolling difference between the two layers of the materials is decreased. The clad metallic material having decreased surface defects is thus obtd.