Nabertherm High-Temperature Vacuum Furnaces
Cold-Wall Retort Furnaces up to 2200 °C
The compact retort furnaces of the VHT product line are available as electrically heated chamber furnaces with graphite, molybdenum, tungsten or MoSi2 heating. A wide variety of heating designs as well as a complete range of accessories provide for optimal retort furnace configurations even for sophisticated applications.
The vacuum-tight retort allows heat treatment processes either in protective and reaction gas atmospheres or in a vacuum, subject to the individual furnace specs to 10-5 mbar. The basic furnace is suited for operation with non-flammable protective or reactive gases or under vacuum.
Alternative Heating Specifications
In general the following variants are available wit respect to the process requirements:
VHT ../..-GR with Graphite Insulation and Heating
- Suitable for processes under protective and reaction gases or under vacuum
- Tmax 1800 °C or 2200 °C (2400 °C as additional equipment)
- Max. vacuum up to 10-4 mbar depending on pump type used
- Graphite felt insulation
VHT ../..-MO or VHT ../..-W with Molybdenum or Tungsten Heating
- Suitable for high-purity processes under protective and reaction gases or under high vacuum
- Tmax 1200 °C, 1600 °C or 1800 °C
- Max. vacuum up to 10-5 mbar depending on pump type used
- Insulation made of molybdenum rsp. tungsten radiation sheets
VHT ../..-KE with Fiber Insulation and Heating through Molybdenum Disilicide Heating Elements
- Suitable for processes under protective and reaction gases, in air or under vacuum
- Tmax 1800 °C
- Max. vacuum up to 10-2 mbar (up to 1300 °C) depending on pump type
- Insulation made of high purity aluminum oxide fiber
Basic version
- Standard furnace sizes 8 - 500 liters
- A water-cooled stainless steel process reactor sealed with temperature-resistant o-rings
- Frame made of stable steel profiles, easy to service due to easily removable stainless steel panels
- Housing of the VHT 8 model on castors for easy repositioning of furnace
- Cooling water manifold with manual stopcocks in supply and return lines, automatic flowmeter monitoring, openloop cooling water system
- Adjustable cooling water circuits with flowmeter and temperature indicator and overtemperature fuses
- Switchgear and controller integrated in furnace housing
- H 700 process control with clearly laid out 7'' touchpanel control for program entry and display, 10 programs each with 20 segments
- Over-temperature limiter with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2
- Manual operation of the process gas and vacuum functions
- Manual gas supply for one process gas (N2 , Ar or non-flammable forming gas) with adjustable flow
- Bypass with manual valve for rapid filling or flooding of furnace chamber
- Manual gas outlet with overflow valve (20 mbar relative) for over-pressure operation
- Single-stage rotary vane pump with ball valve for pre-evacuating and heat treatment in a rough vacuum to 5 mbar
- Pressure gauge for visual pressure monitoring
- Defined application within the constraints of the operating instructions
- NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
Controller: H 700
Information: Additional equipment on request please
Shipment
Benefit from reliable delivery options
Every day, we ship our laboratory equipment throughout Nigeria and internationally. We work with trusted and experienced logistics and courier partners to ensure safe and timely delivery. Shipping costs and delivery times depend on the items ordered and the recipient’s location. Alternatively, you may arrange to collect your order in person by appointment. Below is an overview of our shipping options and policies.
Shipping within Nigeria
All goods are insured as standard up to a value of ₦ equivalent of €25,000. Shipping costs are calculated based on the weight, dimensions, value of the shipment, and delivery destination within Nigeria. For detailed shipping information, please contact us directly—we will be happy to assist.
International shipping
For accurate international shipping costs, we require details of the specific product(s) you wish to order.
Please contact us by telephone or email for a tailored quotation.
Freight forwarding, sea or air freight
For large, heavy, or specialized equipment, we provide personalised quotations for road freight, sea freight, or air freight. Taking current logistics conditions into account, we aim to offer the best possible price-to-performance ratio.
Incoterms 2020
All shipments are handled in accordance with Incoterms® 2020 (ICC). Please contact us to confirm and agree on your preferred delivery terms.
Self-collection
If required, you may collect your goods in person by prior appointment. Please note that pricing and availability may vary between Nigeria and other countries.
Standard deliveries
Standard shipments within Nigeria are handled by reputable courier and logistics providers. Upon request, we can also arrange alternative carriers to meet specific delivery requirements.
Insurance
All deliveries are insured up to a maximum value of ₦ equivalent of €25,000. If the value of your goods exceeds this amount, we will contact you to arrange additional insurance coverage.
Delivery time
Delivery times depend on product availability and order volume. High-demand items may be subject to delays beyond our control. If you require urgent delivery, please inform us in advance, and we will do our best to accommodate your request.
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