DAVY

Consists of: Single Slab Reheat Furnace • Type: Walking Beam • Manufacturer: Davy • Capacity: 150 t/h • Inside Refractory Width: 8,35 m • Effective Length: 32,6 m • Slab Thickness: 160 mm • Slab Maximum Length: 7,5 m • Primary Fuel: mixed BFG and COG • Alternate Fuel: N°6 Fuel Oil • Commissioned in 1995 Water Descalers • Primary descaler at slab reheat furnace run out table • Front and back 3 Hi Rougher Mill descalers. • Finishing Mill descaler at run-in table. Water Descaling Pumps • Manufacturer: Union Pump Company • N° of Pumps: Two (one operating, one stand by.) • Power: 5.000 HP (3.730 kW) • Pump Speed: 4.500 rpm • Discharge Pressure: 127 barg (1.840 psig) Rougher Mill • Type: 3 Hi, one stand 22" x 34" x 100" Reversing Mill • Manufactured by Blow-Knox in 1923. • Main Motor : Synchronous type • Main Motor Power: 6000 HP • Motor Speed: 250 rpm • Maximum Rolling Force: 700 t • Maximum Edger Force: 100 t • Edger Motor Power: 300 HP (224 kW) • Transfer Bar Speed: 2,9 m/s Crop Shear • Drum Type Rotary Crop Shear • Manufacturer: United • Maximum Transfer Bar Section: 32 x 1575 mm at 940 °C, 0,4%C Carbon Steel • Maximum Transfer Bar Speed: 2.5 m/s Finishing Mill • Type: 4 Hi 6 Stands • Mechanical Manufacturer: United • Electrical Manufacturer: General Electric • Roll Barrel: 1.727 mm (68”) • Work Rolls Diameter: 699 mm (27,5”) • Back-Up Roll Diameter: 1.380 mm (54”) • Maximum Rolling Force Stands 1 to 4: 2.400 t • Maximum Rolling Force Stand 5: 2.000 t • Maximum Rolling Force Stand 6: 1.600 t • Electromechanical Screw down Stands 1 to 4 • Electromechanical Screw down & hydraulic capsules in Stands 5 & 6. • 40 t per chock work roll bending per stand. • Main Drives Stands 1 and 2: 6.000 HP (4.476 kW) • Main Drives Stands 3 to 5: 5.000 HP (3.730 kW) • Main Drive Stan 6: 4.000 HP (2.984 kW) • All main drives are DC with thyristor speed control. • Maximum Finishing Speed: 830 m/min • Two X-Ray Gages • Commissioned in 1970 (Stands 3 to 6) and revamped in 1995 (Adding Stands 1 & 2) Laminar Cooling • Seven Cooling Sections                     • Three Control Zones • Total Water Flow: 5.270 m³/h • Upper Face Cooling: 4.100 m³/h • Bottom Face Cooling: 1.170 m³/h • Water Pressure: 2,5 barg Single Downcoiler • Two Wrapper Rolls pneumatically activated. • Maximum Coil Width: 1.575 mm (62”) • Maximum Coil Weight: 20 t • Maximum Coil Diameter: 1.727 mm (68”) • Mandrel Diameter: 724 mm (28.5“) • Strip Thickness: 1,8 to 12,7 mm