METHOD AND DEVICE FOR COLD ROLLING OF METALLIC STRIP HAVING HIGH SURFACE LUSTER

摘要

PURPOSE:To obtain a metallic strip having high surface luster with high efficiency by subjecting the metallic strip to reversible rolling at a high speed by using large-diameter rolls then to reversible rolling at a low speed by using small- diameter rolls. CONSTITUTION:The metallic strip is passed through the 1st reversible rolling mill 1 having large-diameter work rolls 14. A soluble type lubricating oil is supplied from the 1st lubricating oil tank 9 to the mill and the strip is rolled up to the intermediate pass under a high draft at a high speed. The strip is then passed through the 2nd reversible rolling mill 2 having the small-diameter work rolls 15 and a straight type lubricating oil is supplied to the mill from the 2nd lubricating oil tank 11. The strip is rolled up to the finish pass at a low speed so that the high metallic luster is generated on the metallic strip. Coiling reels 4, 5 positioned between both mills 1 and 2 are provided on a revolving drum 7 and the coil is transferred between both mills 1 and 2 by the 180 deg. rotation of the drum 7.