These Rolls are special hyper-eutectoid rolls alloyed with Nickle, Chromium & Molybdenum. The extra carbon and special alloys give extra wear resistance and strength.These rolls are statically cast and undergo a special high temperature heat treatment process of double annealing followed by tempering cycles to give a micro structure consisting of fine pearlitic matrix with spherodised/broken carbide.
Applications include:These Rolls are suitable for rolling medium and heavy sections.
These rolls are also used for roughing stands of strip mill.
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| Hardness | C | Mn | Si | Ni | Cr | Mo | UTS Kgf/mm.sq | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40-45 | 1.20/1.40 | 0.60/.1.00 | 0.30/0.60 | 0.80/MAX | 0.80/1.00 | 0.25/0.40 | 55-75 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 45-50 | 1.40/1.60 | 0.60/.1.00 | 0.30/0.60 | 0.80/MAX | 1.00/1.20 | 0.30/0.45 | 55-75 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 50-55 | 1.50/1.90 | 0.60/.1.00 | 0.30/0.60 | 0.80/1.20 | 1.10/1.30 | 0.35/0.50 | 60-75 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||