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Back-up rolls / Work rolls / Ingot

• Ingot

  Key Facilities - Ingot:
  • 100 tonne Birlec Electric Arc Furnace (EAF) equipped with Sliding Gate Tap Hole (for slag free tapping)
  • 100 tonne Finkl Vacuum Argon Degassing Unit (VAD)
  • 90 tonne Vacuum Oxygen Decarburising Unit (VOD)
  • Vacuum Tanks for stream degassing ingots up to 285 tonnes
  • Casting bay with shallow pit, deep pit, air cast and argon shroud facilities
  • Hot Boxes, fully insulated for slow cooling ingots after teeming
  • Annealing furnaces for annealing of ingots

 

 

• Back-up rolls

  • Production of forged steel back up rolls ranging from 5 to 170 tonnes finished weight.
  • Leading supplier of rolls for use in ferrous and non ferrous applications; both hot and cold rolling.
  • Typical roll materials are 3%, 4% and 5% CrMoV steels. These are differentially or conventionally hardened and supplied in the turned and finish ground condition.
  • Neck rings and bearing sleeves can be fitted where required.
  • Production of back up rolls with a maximum barrel diameter of 2.2 metres and a maximum overall length of 20 metres can be achieved.
  • Tandem mill rolls can be produced up to a maximum weight of 60 tonnes. The maximum finished weight limit for plate mill rolls is 170 tonnes.
  • Tandem mill back-up roll can be supplied with barrel hardness levels within the range 55 to 75 Shore C. Surface hardness is constant throughout the working life of the roll.
  • Plate mill back-up roll can be supplied with barrel hardness levels within the range 50 to 55 Shore C. Surface hardness is constant throughout the working life of the roll.
  • The tempered bainitic shell on Selas treated tandem mill back-up rolls offers high wear resistance with the pearlitic core giving improved ductility.

 

 

• Work rolls

  • Work rolls are supplied finish machined and hardened to customer specification.
  • Rolls can be manufactured in 3-5%Cr in both ESR and air-melt qualities.
  • Work rolls are hardened on a computer controlled progressive dual frequency induction hardening machine. This provides accurate control over the hardening process resulting in consistent hardness profiles from roll to roll.
  • Sub-zero cryogenic treatment completes the hardening process maximising the depth of hardness and reducing retained austenite to minimum levels.
  • A full range of ancillary services is available such as roll re-hardening, conversion and renovation.
  • An after sales service is provided to ensure customers maximise productivity from back up and work rolls.
  • Work, intermediate and small back-up rolls up to 12 Tonnes finished weight are produced in a dedicated manufacturing facility.
  • Work rolls with up to 100mm working life on diameter can be supplied.
  • Post forge heat treatment ensures maximum texturing response for all known texturing processes.
  • Rolls up to 12 tonnes can be supplied with a maximum diameter of 860mm and a maximum overall length of 5350mm.
 
 
 
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Sun Hau Industrial Co., Ltd. ©     Taipei - TEL:+886-2-26276508   FAX:+886-2-27995659      Kaohsiung - TEL:+886-7-3318087   FAX:+886-7-3318127