500mm Nash 4-Hi Reversing Cold Mill: RM-445

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Description

Manufacture: - Nash / New 1976 - Fully revamped 2012 (new electric system & drive system) Mill Type: 4-Hi Reversing Cold Rolling Mill Material: High-carbon steel, stainless steel, copper alloys, etc. Strip Width: - 500mm max (20") Strip Thickness: - 7.0mm max entry down to 0.3mm min exit (.276" - .012") Line Speed: - 300 mpm (984 fpm) - 15 mpm threading speed (49 fpm) Coil Size: - OD max - 1750mm (69") - Weight - 6 mtons (13,200 lbs) Rolling force: - 500 tons hydraulic servo cylinder push down type Equipment: UNCOILER - Mandrel type - 1 x 75 kW, 500 V DC, 500/1500 rpm, 440V - Coil car, gearbox MILL - Work rolls - 635mm face x 175mm diameter - Backup rolls - 610mm face x 524mm diameter - In-foundation roll change sled - Gauge Control: 1. New AGC & Isotope AM241 1Ci (Gamma ray) thickness gauge (new 2012) 2. AGC FB, FF and mass flow - Roll Bending: 1. Positive and negative function with PQ valve (Moog GmbH) - Motor/Drive: 1. New ABB DC motor drive system – 2012 – DCS800-S2 2. 2 x 450 kW, 500 V DC, 500/1000 rpm - Cooling water: max 2 kg/cm2, (max.32 C degree) - Air: max 5 kg/cm2 - Pinion Stand - Gearbox - 2 Universal joints - Roll force hydraulic unit - Normal hydraulic unit - Roll coolant tank (clean/dirty): 13 m³ each / pumps / temperature control unit - Filter - Hoffman type unit / Oil mist system / Emulsion type filter (paper type filter without precoat) RECOILER - 2 mandrel type units - 2 coil cars - Motor - DC 500 V, 300 kW, 440V ELECTRICS - Manufacturer: Mitsubishi Melsec - Type: Q3 PLC system - HMI - SPC (Statistical Process Control) 2012 Revamping Notes: - 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 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, drawing and manuals

Specifications

ManufacturerNash
Year1976
ConditionUsed
Stock NumberRM-445