Cold-rolled strip according to the size of the surface roughness can be divided into two kinds of facial hair and light rolling

1)rolls material is tool steel

2)Composite casting, the outer layer to add more amount of Cr and V and other alloying elements to enhance yield strength at high temperature rolling conditions, the low probability of thermal cracks, effectively improve the resistance to thermal fatigue. Improved casting, heat treatment process to improve the overall performance of rolls

3)And because of Cr added to the product, enhance the hardenability of the material, so you can rolls over up 65HSD high hardness, improved wear resistance