Vacuum furnace with gas cooling under pressure of 15 BAR and vacuum nitriding option LPN TYPE 15.0 VPT-4035/36LPN
General Information:
/ Vacuum furnace with gas cooling under a pressure of 15 bar with vacuum nitriding function
/ Manufacturer SECO/WARWICK
/ Year of production 2015
/ Location – Northern Poland
/ The condition of the furnace was checked by the manufacturer in June 2025 – available report
/ Along with the furnace, a complete cooling system with a fan cooler, nitrogen buffer tank, and loading trolley!
/ The furnace has not been used, except for initial startup!
/ We offer relocation and installation of the device at the destination!
Technical Data
| Working zone – Useful dimensions (W x H x L) | 600 x 600 x 900 mm |
| Maximum load gross weight | 800 kg |
| Temperature | |
| Nominal temperature | 1300°C |
| Temperature uniformity: | |
| – from 150°C up to 750°C in convection gas ± 5°C | |
| – from 600°C up to 1150°C in vacuum ± 5°C | |
| Vacuum | |
| Operating vacuum | 5×10-2 mbar |
| Ultimate vacuum (clean, dry, outgassed, cold and empty furnace) | 1×10-2 mbar |
| Leak rate (clean, dry, outgassed, cold and empty furnace) | <3×10-3 mbar_l/s |
| Partial pressure control range | 10-1 ÷ 10 mbar |
| Hot zone | |
| Structure material mild steel | |
| Thermal insulation 40 mm thick CFC-faced hard felt graphite boards backed by 10 mm thick soft graphite | |
| Heating system | |
| Heating elements low-voltage graphite bands | |
| Heating elements distribution all around workload | |
| Heating power | 150 kW |
| Number of heating control zones | 1 |
| Heating power control mode variable frequency drive | |
| Convection heating | |
| Convection atmosphere (gas / pressure) | Nitrogen / 1÷3 bar abs. |
| Convection fan | 2,2 kW |
| Motor control mode variable frequency drive | |
| Vacuum pumping system | |
| Rough vacuum pump SV300 Oerlikon Leybold | nominal pumping speed 280 m3/h |
| Root’s pump WH700 Oerlikon Leybold | nominal pumping speed 1500 m3/h |
| Furnace vessel | |
| Material mild | steel |
| Volume | 5,5 m3 |
| Door locking mechanism Third clamping ring operated by electrical linear motor | |
| Gas cooling system | |
| Quenching gas nitrogen | |
| Max. quenching pressure | 15 bar abs. |
| Blower motor 2SKPW250-2A | |
| motor power S2=180 kW; S1=110 kW | |
| control mode variable frequency drive | |
| Cool gas inflow nozzles all around the load and front door | |
| Hot gas outflow window in rear wall | |
| Instrumentation | |
| Control and over-temperature thermocouples | 1 off, double, type S |
| Load thermocouples | 2 off, type N |
| Fine vacuum transmitter | TTR-91S / Oerlikon Leybold |
| High vacuum transmitter (OPTIONAL) | PTR-90 / Oerlikon Leybold |
| Control system | |
| PLC S7-1500 / Siemens | |
| Operator’s interface | Siemens TP1500 |
| 15” Touch screen | |
| Over temperature controller | 3216i Eurotherm |
| Variable frequency drives Danfoss | |
