Material : AD140I
Weight: 2158 KG
Thickness of working layer : above 220mm
Hardness of roll surface: 40--45 HSD, Surface hardness univormity less than 5 HSD
Such casting defections as blowhole, air pocket, contraction cavity and impurity inside the rolls is not allowed.
Surface of roll should be smooth without groove, impact or the defections which will influence life.
Smoothness and clearness in the transition part of fillet should be ensured.