Centrifugal composite semi-steel and graphite steel roll and roll ring
Specification: centrifugal composite steel and graphite steel
Applications: it is mainly used in section mills, finish rolling front frames of hot-rolled strip as well as rough rolling and intermediate rolling frames for rod and wire
Product character: For graphite steel roll, its microstructure consists matrix and carbide and its carbide rate is between 1.3% to 2.6%. With different alloy element and heat treatment method, the matrix is pearlite and bainite. As we know that the Cr element can stable the carbide, V element can improve the high temperature property, Ni can strengthening matrix. Semi-steel has the character of small hardness drop, good wear resistance, good high temperature resistance and over-loading character.
Material mechanical properties
Mechanical properties | Data |
Roller surface hardness | HSD 48~70 |
Roll neck hardness | HSD 35~50 |
Core tensile strength | ≥400MPa |
Material chemical composition
C | Si | Mn | Ni | Cr | Mo |
1.1~2.4 | 0.34~0.8 | 0.6~1.4 | ≥0.3 | 0.8~1.5 | 0.2~0.8 |