INFRASTRUCTURE

 

Structural Mill

The Mill is designed to produce 7,00,000 tones per year of structural section in straight length in approximately 3733 rolling hours and 8,50,000 tones per year of structural sections in straight length in approximately within 4533 rolling hours.an input of Continuous cast cold bloom of 200 mm x 200 mm x 12 m and weighing approximately 3760 kgs.

Facilities

  • Walking beam re-heating furnace, 200 tph capacity with cold storage charge, and relevant charging and discharging services.
  • Furnace exit area with pinch roll and high pressure water static descaler.
  • Exit furnace table for the feeding of continuous rolling mill.
  • Continuous rolling mill composed of 17 rolling stand "housing less type" namely
    1. Roughing mill composed of 7 stands arrange in H-V disposition.
    2. Intermediate mill composed of 5 stands arranged either in H or H/V/U or H/U disposition.
    3. Finishing mill composed of 5 stands arranged either in H or H/V/U or H/U or H/V disposition.
  • A crop type start/stop crank shear arranged after stand no. 7.
  • A crop type start/stop rotary shear arranged after stand no. 12.
  • Dividing shear for multiple length cut after stand 17.
  • Double sided 90 m long cooling bed.
  • Straightening machine.
  • 84 m long batching area.
  • Three saw for cutting to length in each line.
  • Stacking, strapping, weighting and collection stations.

Salient Features

  • Continuous Mill consisting of 17 stands of housing-less design.
  • Mode Optimization for cut length of bars.
  • On line automatic measuring gauge for better quality control.
  • Automatic bar bundling & strapping machines for packaging of finished products.
  • Basalt Rock Liner in the scale Flume tunnel to prevent wear out of the base of the tunnel.
  • Minimum tension control and tension free (loop) control.
  • Optimized roll pass design for all product.
  • Start/Stop type flying shears along the mill for emergency chopping of rolled stock.

Capacity

  • Mills: 0.70 MT per annum. The enhanced production capacity is 0.85 MT per annum.

Starting Material

  • Continuous cast cold bloom : 200 x 200 x 12,000mm - weight 3,760 kg

Product Mix

  • Beams       : ISMB 100,125,150 mm; ISJB 150, 175 mm; ISLB 100, 125, 150 mm.
  • Channels   : ISMC 75, 100, 125, 150, 175 mm; ISJC 100, 125, 150, 175 mm.
  • Angles        : 55, 60, 65, 75, 80, 90, 100 mm.
  • Flat               : 70 to 180 mm (thickness: 8 to 30 mm).
  • Special sections like

    Round : 45 to 95 mm
    Squares : 45 to 80 mm
    HE (columns with parallel flanges) : 100 to 120 mm
    IPN (Beams with tapered Flanges) : 100 to 180 mm
    IPE (Beams with parallel flanges) : 100 to 180 mm
    TEE : 60 x 60 x 7 mm
    Unequal angles : 80 x 50, 90 x 60, 125 x 75 mm

Commissioning Dates

  • Mill: Hot trial commissioning on 30.04.2015 and production commencing from 15.02.2016.