Improved wire rod properties resulting from controlled cooling In modern water box and Stelmor~R Conveyor Cooling Systems

摘要

Technical developments to the Water Boxes and Stelmor~R Controlled Cooling Conveyors on Modern Wire Rod Mill installations have resulted in practices for producing superior wire rod properties. The effectiveness of the Stelmor conveyor cooling is closely coupled with the temperature uniformity and controlled rolling conditions prior to the conveyor. When a properly cooled product with uniform Austenite grain size is then introduced onto the Stelmor Conveyor, the rod will undergo further controlled cooling, either retarded or fast depending on the grade, to determine the final as-rolled properties. The design of the Stelmor Conveyor has undergone various developments to improve both the level and uniformity of properties. Many of the latest systems are in continuous use on new high speed rod mills and in modernized mills. The mechanical property results for wire rod products from several of these systems are presented and compared.