Casting/Forged steel mill work rolls backup roller
manufacturing for hot rolled metal sheet and billet mill usage
Specification
Dimension | 891086076133159mm |
Shaft diameter | 1902403053756007509501150mm |
Material | stainless steel,carbon steel,sus ect. |
Diameter(stock) | 202530mm |
Diameter(process customization) | 607689108133159mm |
thickness of pipe | 33.544.55 |
Scope of application | Conveying equipment, belt conveyor, mine, cement plant, power
plant, wharf, coal mine, metallurgy, chemical industry and so on. |
Rolling mill for hot rolled or cold rolling metal sheet or billets
etc.
Different functions of rolls rollers for steel mills:
Work rolls
Backup rolls - are intended to provide rigid support required by
the working rolls to prevent bending under the rolling load.
Rolling balance system - to ensure that the upper work and back up
rolls are maintained in proper position relative to lower rolls.
Roll changing devices - use of an overhead crane and a unit
designed to attach to the neck of the roll to be removed from or
inserted into the mill.
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 housing
Roll cooling and lubrication systems.
Pinions - gears to divide power between the two spindles, rotating
them at the same speed but in different directions.
Gearing - to establish desired rolling speed.
Drive motors - rolling narrow foil product to thousands of
horsepower.
Electrical controls - constant and variable voltages applied to the
motors.
Coilers and uncoilers - to unroll and roll up coils of metal.
Slabs are the feed material for hot strip mills or plate mills and
blooms are rolled to billets in a billet mill or large sections in
a structural mill. The output from a strip mill is coiled and,
subsequently, used as the feed for a cold rolling mill or used
directly by fabricators. Billets, for re-rolling, are subsequently
rolled in either a merchant, bar or rod mill. Merchant or bar mills
produce a variety of shaped products such as angles, channels,
beams, rounds (long or coiled) and hexagons.
DESCIPTION of Work Rolls or Backup Roller:
1) Material: Alloy Steel, Alloy Iron, Ductile Iron namely 9Cr3Mo,
70NiMoV etc.
2) Standard: GB, AISI, SAE, ASTM/ASME, EU, AS/NZS etc
3) Size: According to clients' drawing or design needs
4) Hardness: based on design specification
5) Chemical Composition and mechanical property: as specified.
we can do various customized work rolls ranging in different sizes
and processes. please feel free to make any enquiries accordingly.