Hitachi 6-Hi reversing mill
Built: 1976 Shut down: 2014
Revamped: 2010 Control system – changed DC to AC motors
Load cells were replaced in March 2005 & thickness gauge in March 2009
Roll coolant cooler was replaced in July 2009
Control boards of hydraulic screw down & electromagnetic valves were replaced in 2009.
Input Steel coil width: 610 – 1330 mm
Thickness Entry: 1.6-4.5 mm Exit: 0.15 – 2.3 mm
Price: Asking
Coil weight: 21 Ton Entry Coil ID: 550-630 mm Exit Coil ID: 610/508 mm
Coil OD: 2050/2050 mm Capacity: 31,000 t/month
Roll diameters: Work rolls: 405-440 mm Length: 1420 mm
Intermediate rolls: 460-510 mm Length: 1395 mm
Back-up rolls: 1220 – 1345 mm Length: 1420 mm
Ordinary rolling load: 20 MN
Mill motor AC New in 2010 Power: 5000 kW, 1160/430 RPM Gear ratio: 1:1
Response capability of mill motor: 10 rad/sec.
Type of mill drive Single drive
Pay off reel Single type mandrel Power: 450 kW, 850/310 RPM Gear ratio: 2.2:1
Entry tension reel Single type mandrel Power: 2900 kW, 840/235 RPM Gear ratio: 1:1
Delivery tension reel Single type mandrel Power: 2900 kW, 840/235 RPM Gear ratio: 1:1
Entry guide Vertical roller
Screw down Hydraulic type Mill modulus: 4707 kN/mm Response capability: 25 Hz
Bearings Work & Intermediate rolls: Taper rolling bearings Lubrication: Oil mist
Back-up rolls: Roller bearings Lubrication: Oil mist
Roll changing type: Hydraulic drives
Roll bending Work rolls Max. load of INC and DEC 255(INC), 0(DEC) kN/chock
Intermediate rolls Max. load of INC 0 kN/chock
Intermediate shift
Pressure gauge Mfc.: ABB Type: Load Cell
Thickness gauge Mfc.: Toshiba Type: X-ray Location: Entry
Control system Mfc.: Hitachi Type: R700
Rolling oil System: recirculation Density measurement: Supersonic Wave Method
Roll coolant Dirty tank: 22 m³ Clean tank: 42 m³
Pump capacity Max. pressure: 0.8 MPa Discharge volume: 2.8 m³/min.
Installed 3 pumps Operating 2 Filter Type: Magnetic Separator
Exhaust fan Motor power: 300 kW 2500 m³/min
Cellar ventilation fan Motor power: 30 kW 600 m³/min.
Fire fighting Cellar Type: Carbon dioxide, sprinkler Mill Type: sprinkler (water)
Available Rolls and Chocks
Roll total Chocks SET
Roll (2 pcs/set) Chock (4 pcs/set)
WR 30 8 15 sets 2 sets
IMR 11 8 5 sets 2 sets
BUR 6 8 3 sets 2 sets
Spare parts: Large amount of spare parts
photo
６hirolling mill
If you are interested in this plant, please contact us by email or Whatupp/wichat
email : papillonkitano@outlook.jp
whatupp/wechat : 81-80-8537-9518
Takashi Kitano
Papillon Co Ltd.
