1992 Volume 32 Issue 11 Pages 1131-1140
As the fundamental tools in the cold rolling, work rolls have been greatly affected on the quality, production cost and productivity. The issue of the technological innovation about work roll manufacturing have been changed from the original, which was concerned with steel making and ingotting techniques for minimizing inclusions, to the next which cope with maximizing the hardening penetration by improving heat treatment and composition designing. In addition, the trend show that the industry is orienting to produce a high anti-wear rolls by increasing alloying elements.
The improvement of soundness and expansion of hardening depth of roll its self have greatly contributed to the reduction of productivity and production cost of sheet steels by the combination with the innovations of rolling technology such as continuation of tandem mill or hydraulic screw down.
On the other hand, chasing high anti-wear property caused the problem of regrinding of rolls instead.
The task from now shall be oriented to reconsidering the factors which restrict the work roll service life returning back to the fundamentals and seeking for the roll performance which suit to each mills own purpose, at the same time developing a regrinding technology which meet to the high performance rolls should be required.
