Development of Advanced 20-High Split-Housing ZR-Mill (HZ-Mill)

摘要

As a heavy reduction cold rolling of hard materials such as stainless steel and electrical steel, there has been a growing trend that using the Advanced 20Hi Split Housing ZR-Mill (HZ-Mill) which was developed as a 20Hi Cluster mill with a split inner housing, replacing the conventional large-scale mono-block type 20Hi ZRM. In the HZ-Mill, workability can be improved by increasing a roll clearance between the work rolls, and the structure has been optimized to sufficiently secure the required rigidity. In addition, this mill is equipped with a high response hydraulic screw-down system and Double AS-U mechanism, thereby expanding functions of thickness and shape control.