CHARACTERISTICS
Spheroidal Graphite rolls are structurally
characterised by nodular graphite as against flake
graphite in the normal cast iron rolls. The matrix
is pearlitic in nature. Different levels of hardness
are obtained by varying the alloy additions and
controlling the cementite in the matrix
These rolls are excellent substitutes for many
conventional steel and cast iron rolls due to a
combination of superior strength, good wear
resistance and resistance to spalling & fire
cracking.
Adequate water cooling is desirableAPPLICATION
Roughing and Intermediate rolls for blooming,
slabbing and wire rod mills. Roughing ,Intermediate
and Finishing rolls for rail and structural mills.
Finishing rolls for sheets and plate mills.
Skin-pass and Scale Breaker rolls for hot strip
mills. |
Hs 60-65 °Sh-C x 100 |
