Rolls are the primary tool for shaping the material, setting the roll final dimensions, surface finish and mechanical properties.
Depending on the service conditions, the strength of backup rolls is achieved thanks to complex alloying using chromium, molybdenum, vanadium, etc.
The roll metal quality is inspected by means of ultrasonic flaw detectors at all main manufacturing stages.
Design features
Carbon steels, high-carbon tool steels and alloyed steels are used to ensure high hardness and wear-resistance of rolls
All backup rolls are made of vacuum degassed steel.
Guaranteed features of solid-forged backup rolls for cold- and hot-rolling mills
High and uniform hardness after power current hardening (within 1-2 HSD over the barrel)
Effective layer depth is min. 40–100mm over the radius
High strength of the roll material combined with ductility
No tendency towards cracking or barrel surface spalling
Absence of metallurgical and structural defects
Minimal level of residual stress
No design flaws impairing the roll performance
Specification
Item | MC3 forged work roller steel rolling mill |
Handcrafte | furnace rolls are comprised of statically cast trunions (ends) welded to a centrifugally cast roll body with our unique locking mechanism. |
Temperture | can perform in high temperture |
Advantage | Our dry rolls are comprised of statically cast trunions (ends) welded to a centrifugally cast roll body used in a tunnel furnace |
our dry rolls will provide abundant fuel savings through reduced heat loss in the furnace |
Design features
Carbon steels, high-carbon tool steels and alloyed steels are used to ensure high hardness and wear-resistance of rolls
All backup rolls are made of vacuum degassed steel.
Guaranteed features of solid-forged backup rolls for cold- and hot-rolling mills
High and uniform hardness after power current hardening (within 1-2 HSD over the barrel)
Effective layer depth is min. 40–100mm over the radius
High strength of the roll material combined with ductility
No tendency towards cracking or barrel surface spalling
Absence of metallurgical and structural defects
Minimal level of residual stress
No design flaws impairing the roll performance
Mill protection devices - to ensure that forces applied to the backup roll chocks are not of such a magnitude to fracture the roll necks or damage the mill housingPacking and preservation
Packing and preservation methods depend on the contract conditions and on the climatic zone where the rolls are going to be supplied, as well as on the transportation and storage conditions.
The items ready to be shipped are covered with a preservative coating – several layers of primer and enamel.
The roll necks are wrapped into anticorrosive paper with polyethylene coating and into waterproof paper.