Development and application of new work rolls for high-strength steel cold rolling

In order to meet the needs of rolling high-strength steel and ultra-high-strength steel,a new type of cold work roll was developed by the alloy composition design and manufacturing process optimization.Wear resistance of the working layer and strength-toughness of the roll body have been significantly improved.The application results at the work site show that the average rolling tonnage in a single-cycle increased by about 40%,and the grinding depth after serving was reduced by about 7%.Its performance is better than that of the imported cold work roll of the same type.The new work roll can meet the demand of rolling high strength automobile steel,and it also has a broad application prospect in cold rolling of silicon steel,stainless steel and other steel sheets which are difficult to be rolled.