4-HI Reversing Cold Rolling Mill (Used)
Specifications
| Manufacturer | L W NASH |
| Model | 4-Hi reversing cold rolling mill |
| Condition | Used |
| Stock Number | VX-17560 |
| Material | high carbon, stainless steel, copper alloys, etc. |
| Rolling speed | 300 m/min |
| Threading speed | 15 m/min. |
| Speed up/down time | 25 sec. |
| Coil width | max 500 mm (19.7") |
| Coil max. diameter | 750 mm (29.5") |
| Coil weight | max. 6 tons |
| Rolling force | 500 tons hydraulic servo cylinder push down type |
| Back-up roll | roll face 610 mm (24"), dia. 524 mm (20.6") |
| Work roll | roll face 635 mm (25"), dia.175 mm (6.9") |
| Thickness measuring | Gamma-ray thickness gauge |
| Mill power | main power AC 220 V & 440 V-60 Hz, 3 Ph |
| Mill housing | 1 lot |
| Universal joint | 2 sets |
| Pinion stand | 1 unit |
| Pay off reel | 1 unit |
| Tension reel with gear box | 2 units |
| Payoff off reel gear box | 1 unit |
| Payoff reel coil car | 1 unit |
| Tension reel coil car | 2 units |
| Roll force hydraulic unit | 1 lot |
| Normal hydraulic unit | 1 lot |
| Lubrication circulation unit | 1 lot |
| Roll coolant tank (clean/dirty) | 13 m³ each |
| Pump units (roll coolant) | 1 lot |
| Temperature control unit (roll coolant) | 1 lot |
| Hoffman type filter unit (roll coolant) | 1 lot |
| Oil mist system | 1 lot |
| Electric control system | 1 lot |
| Backup roll | several lots |
| Mill motor | DC 500 V, 450 kW, 500/1000 RPM x 2 units 440 V |
| Pay off reel motor | DC 500 V, 75 kW, 500/1500 RPM, 440V |
| Tension reel motor | DC 500 V, 300 kW, 440V |
Description
Built: 1976, Full revamped in 2012 - new electric system & drive system Input thickness: max. 7 mm (.276"), Exit thickness: min. 0.3 mm (.012") New AGC & Isotope AM241 1Ci (Gamma ray) thickness gauge - Pauly GmbH - 2012 Thickness control: AGC FB, FF and mas flow, Mfc.: Pauly GmbH Cooling water: max 2 kg/cm2, (max.32 C degree), Air: max 5 kg/cm2 Mechanical units: Emulsion type filter Paper type filter without precoat Work roll: several lots Electric system: Manufacturer: Mitsubishi Melsec Type: Q3 PLC system, HMI SPC (Statistical Process Control) New ABB DC motor drive system - 2012 - DCS800-S2 The roll bending is positive and negative function with PQ valve (Moog GmbH). Roll force hydraulic unit, Normal hydraulic unit, Lubrication circulation unit Revamped in 2012: Revamped and Reused items: housing, various backup, work rolls with chocks, payoff reel with coil feeder, tension reels, coil cars, motors, spindle and Hoffman type filter Newly attached items: clean/dirty tank, electric control/ABB drive system, AGC/gamma ray thickness gauges, HMI, servo hydraulic system, main roll force cylinder, positive/negative bending, normal hydraulic system, shear, left/right side guides with wiper, left/right reel out board bearings. New foundation drawing, cabling and piping. Pump unit (coolant, Oil mist