Rolling Mill for High-Grade Steels

Rolling Mill for High-Grade Steels

Technical data

Starting stock Billets 50 x 100 x 10,000 mm
Billets 125 x 125 x 11,400 mm
Finished product Rod 5,5 – 13,5 mm
Bars Ø 11 – 57 mm
Flads 22 – 120 mm, 5 – 12 mm dick
Bundle/stack 3 – 8,5 m
Bundle/stack weight 0,5 – 3 (5) t
Furnace capacity bis 60 t/a
Material grades High-grade structural steels
34 Cr 4, 60 SiMn7, 42 CrMo4
Antifriction bearing steels
100 Cr 6, 100 Cr 2, 100 CrMo 7 3Tool steels
X 210 Cr 12, X 38 CrMoV 5 1, 55
CrNiMoVS 4 2 4
Acid-resistant and heat-resistant steels
X 5 CrNiMo 18 11, X 2 CrNiMo 19 13,
X 20 CrNiSi 25 4
High-speed steels
X 79 Wco 18 5, X 82 W Mo 6 5 5
Special alloys
X 55 CrMnNiN 20 8
X 45 CrSi 9 3
X 3 CrNiMoNbN 23 17

The complete range of steel grades includes approx. 300 different grades

Furnace group:

  • Charging grate, cross transfers, weighscale, descaler (2x), heat- holding tunnel

Mill train

  • Single strand, H/V – arrangement
  • Roughing train: PSW and 6 x Model 440
  • Intermediate train: 4 x Model 440, 2 x Model 340
  • Finishing train: 4 x Model 340
  • Kocks-block
  • 8-stand wire rod block for high grade steels 3 x 215/ 5 x 170
  • Associated shears
  • Loopers: 7 x vertical, 1 x horizontal

Cooling bed group

  • Water cooling line, pinch roll unit
  • Cooling bed shear
  • Cooling bed 57 x 5 m

Continuous finishing shop

  • Abrasive cutting machine
  • Piling and stacking facilities (non-magnet type)
  • Tying machines: 1 x fixed, 1 x movable
  • various associated equipment, e.g. stoppers, chain transfers, roller tables etc.

Rod finishing equipment

  • Water cooling and equalizing sections, pinch roll unit, laying head
  • Ring conveyor for retarded and accelerated cooling, reforming tub
  • Pallet-type coil handling system, compacting & tying units, weighscale, unloading station

Reel plant

  • Water cooling and equalizing sections,
  • Pinch roll units,
  • Bar reels: 2 x,
  • Transfer equipment to pallet-type coil handling system