continuThe productivity of roll has increase greatly The cold-olled products has devehigh-precision, high-quality and multi model. The quality of cold-rolled workingthe surface quality of plate material, the qualified rate and operating rate of mill.cold-rolled working roll is very important The basic requirement includes:
- High and even hardness in rllbody,
- b. Deep hardness layer,
- High abrasion resistance;
- d. Better spalling resistance;
- e. Excellent mechanic property.
As the mill is imported and reformed, new technology and new processplate material is developed and the quality of plate matenial
improves, the requof toll has developed in individual direction