Products

Yongxing - container ship, Croatia (5 116 tons of plates with a thickness of 8 – 40 mm)

Yongxing - container ship, Croatia (5 116 tons of plates with a thickness of 8 – 40 mm)

History

The history of VÍTKOVICE STEEL, a.s. started with the first heat of ductile iron, tapped in Rudolf's smelter, VÍTKOVICE's early predecessor, in 1830.

As steel production was developing, the company built its own rolling mills. The predecessors of the currently operated mills were commissioned in 1911.

Rolling Mills

Rolled products also have a long tradition in VÍTKOVICE. For example, VÍTKOVICE's first award product was steel rail produced by puddling which earned its manufacturer a silver medal from the 1839 Vienna exhibition.

Rolling mills emerged as the steelmaking continued expanding. Bellow are some historic data about VÍTKOVICE's current rolling mills:

  • heavy section mill, since 1913
  • billet mill 1, since 1913
  • 3.5 Four-High mill, since 1971

The installations went through numerous revamps and general overhauls over the years. Some of them are enlisted further below.

Cost Center 230 – Sections Rolling Mill

1913 Simultaneous launch of the blooming mill, rail mill, and billet mill as well as the finishing shops
1956 New HRW section straightener is built
1963 Billet mill II commenced following the heavy mill shutdown
1964 MONTBARD hyperbolic straightener commenced
1965 Walking beam cooling furnace is built
1968 Rail train receives the reducing mill, heating furnace is built
1971 Billet rolling mill revamp
1975 NORTON scalping machine commenced
1978 Major overhaul of heavy section mill, revamp of finishing shops
1985 CIRKOFLUX round billet inspection machine installed
1989 NORITAKE grinding machine completed
1991 Stand 3 and 4 upgrade to improve precision
1992 Stand 2 of the heavy section mill receives computer-controlled motor-driven roll adjustment; revamp of heating furnace
1994 Revamp of stand 4 with new pinion stand; stand 4 is now a universal stand with computer-controlled motor-driven roll adjustment; pile plank rolling mill upgraded for 600 mm wide products
1997 Blooming mill I shutdown; billet mill becomes part of the heavy section train; new MESSER concast slab longitudinal flame cutter installed.
Pile plank & lock matching line installed
2000 Heavy section rolling mill stand 4 receives new computer control
2005 Reconstruction of the TPT furnace
2005 Reconstruction of the TPT hall
2005 Commencing of roll turning hall operation

 

Cost Center 260 – 3.5 Four-High Rolling Mill

1971 3.5 Two-High Rolling Mill commenced
1975 Automatic cutting line commenced
1978 Dispatch hall No. IV opened
1984 Straightening line with dispatch pocket commenced
1986 Stage-by-stage commencement of 3.5 Four-High mill, part II (cooling bed II, double-edge power shears, sheet stamping, walking beam furnace, cutting shears DN 2, two dispatch pockets
1988 Hall V - concast slab flame-cutting
1989 Ultrasound line commenced
1992 Length-cutting power shears commenced
1995 Connection between continuous caster and 3.5 Four-High mill hall V established
1998-1999 Major overhaul and upgrade of hot part of the 3.5 Four-High mill including new heating furnace and transversal crane runway
2001 Completion of 230bar pressure washer iron scale
2003 Completion of MORGOIL hydrostatic lubricating ballast
2005 Renovation of UZ lines
2005 Opening of new testing hall
2006 Termination and liquidation of 4.5 DUO rolling mill
2006 Launched bending hydraulic cylinder operatio
2006 Renovation of 3rd level KSUP rolling mill equipment hall

 

The latest technical upgrades extended the rolling mills' capabilities:

  • The 3.5 Four-High mill substantially improved geometrical quality of rolled plates, the mill can produce wedge-shaped plates, the mill reduced yield/loss ratio, the mill expanded the product range, etc.
  • The heavy section mill can produce product range with better dimensional precision. At present the mill manufactures sheet piles with construction width of 600 mm.