METHOD FOR THE PRODUCTION OR RESTORATION OF WORKING ROLLS FOR HOT ROLLING OF METALLIC FLAT PRODUCTS

摘要

The invention relates to a method for the production or restoration of working rolls for hot rolling metallic flat products, in particular for shaping steel slabs to pre-strips on broad strip mills, wherein the improvement resides in that the central circumferential zone of the roll body is provided with a greater coarseness than the two marginal zones. With this process it is possible to employ rolls with great hardness and yet obtain an excellent roll bite, so that the efficiency is greatly enhanced.