Properties
The shell has a remarkable mechanical performance. With virtually no fall off in hardness due to the quantity of graphite remains basically unchanged throughout the working layer. The hardness of roll depends mainly on the type of matrix, namely sorbite or martensite.
 
Mechanical properties
|
Hardness of shell |
HSD60-83 |
|
Hardness of core |
HSD35-55 |
|
Tensile Strength of core |
¡Ý450MPa |
Chemical analysis
|
Grade |
C |
Si |
Mn |
Ni |
Cr |
Mo |
|
Indefinite I |
2.9/3.6 |
0.6/1.2 |
0.4/1.2 |
0.7/1.2 |
0.5/1.0 |
0.2/0.6 |
|
IndefiniteII |
2.9/3.6 |
0.6/1.2 |
0.4/1.2 |
1.0/2.0 |
0.5/1.0 |
0.2/0.6 |
|
IndefiniteIII |
2.9/3.6 |
0.6/1.2 |
0.4/1.2 |
2.0/3.0 |
0.7/1.2 |
0.2/1.0 |
|
IndefiniteIV |
2.9/3.6 |
0.6/1.2 |
0.4/1.2 |
3.0/4.8 |
1.0/2.0 |
0.2/1.0 |
Applications
For the finishing stands of continuous rolling mill of strip and bar, the pre-finishing stands of high speed wire, the intermediate and the front of finishing stands of small section, also utilized as thin plate and straightening roll. |
