DANIELI BELL ANNEALING FURNACES, (5) AVAILABLE WITH ANCILLARY EQUIPMENT

HEAT TREATMENT: BELL ANNEALING FURNACES WITH HYDROGEN (H2) ATMOSPHERENR. 5 BELL HEATING FURNACESNR. 10 BASES - DANIELI SUPPLIED IN 2017NR. 10 INNER COVERSNR. 3 COOLING BELLSNR. 40 SEPARATORSPRODUCTION DIMENSIONS Material steel grade: CQ, DQ, DDQ, EDDQMaterial steel grade: NGO highperm 1%Coil size:ID 620mmOD 900 - 1,950 mmWidth 900 - 1,270 mmStrip Thickness 0.35 - 1.6 mmCOIL DIMENSIONSID 620mmOD 1,908 mmWidth 1,250 mmStrip thickness 0.8 mmWeight 25 tonCOIL WEIGHTMax 20 kg/mmNo. of coils per stack: 4 WORKBASE LOADSWorkbase max 105 MTNet charge max 100 MTWorkload space:Diameter 2,000 mmPilling height 5,300 mm (assuming intermediate & top convector)OPERATING CHARACTERISTICSHeatingNo. of Burners: 8 / furnaceUnitary power: 170 kW/burner (146.200 kcal/h /burner)Install thermal power: 1,360 kW/furnace (1,169,600 kcal/h /each)5,440 kW tot (4,678,400 kcal/h tot)Operating temperature: Max 850 oCHeating chamber temperature: Max 1000 oCCombustible type: NG (natural gas)Combustion air fan power: 7.5 kW/eachCombustion air flow: 1,600 Nm3/h /eachRECIRCULATING FANCoupling: directSpeed: Variable by inverter from 500 up to 2000 RPMFlow rate: up to 80,000 m3/hPower: 25 kW/eachCooling: air and water (flow rate 0.7 m3/h approx.)Thermal protection: 3 PTC sensors inside the windingsSpecial: process gas flows through the motor.COOLING HOODCooling fan air flow: 3 x 12,000 Nm3/h /eachCooling fan electrical power: 3 x 2.2 kW/eachPURGING PROCESS GAS Atmosphere: Nitrogen (N2)ANNEALING PROCESS GASAtmosphere: Hydrogen (H2) / Nitrogen (N2)PLANT LAYOUT Area capacity: 10 bases, 6 heating bells and 4 cooling hoodsPlant length: abt. 40,800 mmPlant width: abt 13,000 mmPlant height: abt 8,000 mm (over lev.0.00)Plant overall height: abt. 16,800 mm (for furnace hoisting by crane)Foundation deep: + 800 mm UTILITIES FUEL Fuel type: Natural GasPURGING GAS (Nitrogen)Maximum oxygen (02) content: 10 ppmHYDROGEN ATMORPHEREMaximum oxygen (02) content: 10 ppmCOOLING WATER FOR: Motor fan and base gasketCooling hoodELECTRICITY Voltage: 380V +/-10%3 phase ACFrequency: 50 Hz +/- 1 HzActuators, auxiliary equipment and instruments: 110 V ACLimit switches, lamps, push buttons and PLC in/out cards: 24 V DCLUBRICANTS Type: ESSO UNIREX 4 or similar