VERTICAL VACUUM FURNACE

Key Components & Features:
Vertical vacuum furnace design.
12 bar cooling pressure capability.
Vacuum and convection heating operation.
Three heating zones with heating element distribution all around workload.
Low-voltage heating bands and tubes.
Convection heating fan.
Nozzle gas inflow system around load and from furnace bottom.
Top hot gas outflow.

Manufacturer: SECO/WARWICK
Model No.: 12.0 VVPT-EH-32/48N
Year: 2004
Location: Southern Italy

Capacity / Output:
Useful dimensions: 800 mm diameter × 1200 mm high
Maximum hearth load: 800 kg

Maximum Temperature:
1350°C
Working temperature, vacuum heating: 600–1320°C
Working temperature, convection heating: 150–750°C
Temperature uniformity: ±5°C

Vacuum System:
Ultimate vacuum: < 5 × 10⁻² torr
Maximum leak rate: 1 × 10⁻³ mbar × l/s
Rotary piston pump: 600 m³/h
Root’s pump: 2000 m³/h
Vacuum valve: KWW DN100
Vacuum transmitter: TTR 216S Leybold-Vacuum
Vacuum measuring range: 1 × 10⁻³ to 1 × 10³ mbar
Partial pressure control range: 10⁻² to 1 mbar

Cooling System:
Maximum cooling gas pressure: 12 bar absolute
Maximum gas pressure during convection heating: 4 bar absolute
Gas blower motor: 3000/1500 rpm; 110/37 kW
Convection heating fan: 2 kW; 1500 rpm

Construction:
Vacuum chamber material: mild steel
Vacuum chamber volume: 6.5 m³
Cover locking: third clamping flange
Hot zone structure: mild steel
Thermal insulation: hard graphite felt boards and graphite foam
Heating elements: graphite
Heating power: 180 kW (3 × 60 kW)

Controls:
Programmable logic controller: Siemens S7-315
Operator panel: Siemens 477D
Temperature controller/programmer in PLC
Over-temperature controller: UDC 100L Honeywell
Heating element power control: continuous

Instrumentation:
Thermocouples: Type S (1 control + 1 safety)
Thermocouples: Type K (2 isothermal quench)

Weight:
Approx. 12,000 kg