Nabertherm Protective Gas Retort Furnace
Hot-Wall Retort Furnaces up to 1100 °C
These gas tight retort furnaces are equipped with direct or indirect heating depending on temperature. They are perfectly suited for various heat treatment processes requiring a defined protective or a reaction gas atmosphere. These compact models can also be laid out for heat treatment under vacuum up to 600 °C. The furnace chamber consists of a gas tight retort with water cooling around the door to protect the special sealing.
Different model versions are available depending on the temperature range required for the process:
Models NRA ../06 with Tmax 650 °C
- Heating elements located inside the retort
- Temperature uniformity up to +/- 5 °C inside the work space
- Retort made of 1.4571
- Gas circulation fan in the back of the retort provides for optimal temperature uniformity
Models NRA ../09 with Tmax 950 °C
- Outside heating with heating elements around the retort
- Temperature uniformity up to +/- 5 °C inside the work space
- Retort made of 1.4841
- Fan in the back of the retort provides for optimal temperature uniformity
Models NR ../11 with Tmax 1100 °C
- Outside heating with heating elements around the retort
- Temperature uniformity up to +/- 5 °C inside the work space
- Retort made of 1.4841
Basic version
- Compact housing in frame design with removable stainless steel sheets
- Controls and gas supply integrated in the furnace housing
- Welded charging supports in the retort or air-baffle box in the furnace with atmosphere circulation
- Swivel door hinged on right side with open cooling water system
- Depending on furnace volume for 950 °C- and 1100 °C-version the control system is divided in one or more heating zones
- Temperature control as furnace control with temperature measurement outside the retort
- Gas supply system for one non-flammable protective or reaction gas with flow meter and manual valve
- Port for vacuum pump for cold evacuation
- Operation under vacuum up to 600 °C with optional single-stage rotary vane pump
- Defined application within the constraints of the operating instructions
- NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
Information: Additional equipment on request please
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Width inside (oven):
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225 mm325 mm450 mm590 mm720 mm870 mm
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Height inside (oven):
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225 mm325 mm450 mm590 mm720 mm870 mm
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Stove appliance type:
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retort furnace
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Oven volume:
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17 l25 l50 l75 l150 l200 l300 l400 l500 l700 l1000 l
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Oven temperature max.:
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650°C950°C1100°C
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Depth inside (oven):
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350 mm475 mm500 mm700 mm750 mm900 mm1000 mm1250 mm1350 mm
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