Furnaces

Product Details:

 

Rotary Tube Furnaces for Continuous Processes up to 1300 °C

The RSRC rotary tube furnaces are particularly suitable for processes where continuously running batch material is heated for a short time.

 

The rotary tube furnace is positioned slightly inclined heated-up to the target temperature. The material is then continuously supplied at the upper end of the tube. It passes through the heated area of the tube and falls on the lower end out of the tube. The time of heat treatment results from the inclination angle, the rotational speed and the length of the working tube, as well as from the flow properties of the batch material.

 

Equipped with the optional closed loading system for 5 liter charge material incl. receptacle, the rotary tube furnace can also be used for processes under protective gas or vacuum.

Depending on process, charge and required maximum temperature, different working tubes made of quartz glass, ceramics or metal to be used (see page 42). This rotary tube furnace is therefore highly adaptable for different processes.

• Tmax 1100 °C
  • Working tube made of quartz glass open at both sides
  • Thermocouple type K
• Tmax 1300 °C
  • Open tube made of ceramics C 530
  • Thermocouple type S
• Heating elements on support tubes provide for free radiation
• Housing made of sheets of textured stainless steel
• Adjustable drive of approx. 2-45 rpm
• Digital display unit for the tilting angle of the rotary tube furnace
• Beltless drive and split-type furnace housing (opening temperature < 180 °C) provide for very easy tube removal
• Compact system, rotary tube furnace positioned on a base frame with
  • Manual spindle drive with crank to preset the tilting angle
  • Switchgear and controls integrated
  • Castors
• Defined application within the constraints of the operating instructions
• NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

• Three-zone control for the optimization of temperature uniformity
• Temperature display unit in the working tube with measurement by means of an additional thermocouple
• Charge control by means of an additional thermocouple in the working tube
• Different gassing systems with good flushing of the charge with process gas in counterflow (only in combination with feeding system below)
• Check valve at gas outlet avoids intrusion of false air
• Vacuum design, up to 10-2 mbar depending on the applied pump
• Charging system for continuous material transport, consisting of:
  • Stainless steel funnel incl. electric vibration generator to optimize the material feeding into the working tube
  • Electrically driven screw-conveyor at the inlet of the working tube with 10, 20 or 40 mm pitch and adjustable speed between 0.28 and 6 revolutions per minute, different gear transmissions for other speeds on request
  • Collecting bottle made of laboratory glass at the outlet of the working tube
  • Suitable for operation in gas atmosphere or vacuum
• Working tubes made of differents materials
• Quartz glass batch reactors, Tmax 1100 °C
• Higher temperatures up to 1600  °C available on request
• Digital display unit for the tilting angle of the furnace
• Electric linear drive for the adjustment of the tilting angle
• PLC controls for temperature control and the control of connected aggregates such as gearshift and speed of the screw-conveyor, speed of the working tube, switching of the vibration generator, etc.
• Process control and documentation via VCD software package or Nabertherm Control Center (NCC) for monitoring, documentation and control

Additional Information:

• Delivery Time: 1 week
• Packaging Details: Box

Product Details:

These compact melting furnaces for the melting of non-ferrous metals and alloys are one of a kind and have a number of technical advantages. Designed as tabletop models, they can be used for many laboratory applications. The practical counter balanced hinge with shock absorbers and the spout (not for KC) on the front of the furnace make exact dosing easy when pouring the melt. The melting furnaces are available for furnace chamber temperatures of 1000, 1300, or 1500 °C. This corresponds to melt temperatures of about 80 °C - 110 °C lower.

• Tmax 1000 °C, 1300 °C, or 1500 °C, with melt temperature about 80 °C - 110 °C lower
• Crucible sizes of 0,75, 1,5 or 3 liters
• Crucible with integrated pouring spout of iso-graphite included with delivery
• Additional spout (not for KC), mounted at the furnace for exact pouring
• Compact bench-top design, simple emptying of crucible by tiltiing system with gas damper
• Crucible for heating up of melting furnace insulated with a hinged lid, lid opened when pouring
• Defined application within the constraints of the operating instructions

Additional equipment

• Other crucible types available, e.g. steel
• Design as bale-out furnace without tilting device, e.g. for lead melting
• Over-temperature limiter for the furnace chamber with automatic reset to protect against overtemperature. The limit controller switches off the heating when the pre-set limit temperature has been reached and does not switch it on again until the temperature falls below the setting again.
• Observation hole for melt

Additional Information:

• Delivery Time: 1 week
• Packaging Details: Box

Product Details:

Gradient 96 Well Thermal Cycler produces consistent, reliable results while making gradient technology affordable. This unit is extremely simple to program, compact in design and built to perform.

PRECISION THERMAL CONTROL: Rapid heating and cooling of the precision machined sample block is achieved by six Peltier modules. Temperature sensors across the block feed data to the microprocessor to control operation of the system and ensure accuracy and uniformity. Two types of temperature control are selectable. The first option is block control, which uses the actual temperature of the block to adjust heating and cooling input. THe second option is tube control, which uses a sophisticated algorithm program that calculates sample temperature based on volume and triggers heating and cooling accordingly to provide quick temperature change in the sample and minimize over- and undershoot.

Additional Information:

• Delivery Time: 1 week

Product Details:

Furnaces for Annealing, Hardening and Brazing

To withstand harsh use in the laboratory, e.g. when heat-treating metals, robust insulation with light refractory bricks is necessary. The chamber furnaces N 7/H - N 87/H are a perfect fit to solve this problem. The furnaces can be extended with a variety of accessories, like annealing boxes for operation under protective gas, roller guides, or a cooling station with a quench tank. Even high-performance applications like the annealing of titanium in medical applications can be implemented without the use of expensive and complicated annealing systems.

• Tmax 1280 °C
• Three-sided heating from both sides and the bottom
• Heating elements on support tubes ensure free heat radiation and a long service life
• Bottom heating protected by heat-resistant SiC plate
• Low energy consumption due to multi-layer insulation
• Exhaust opening in the side of the furnace, or on back wall of chamber furnace for model N 31/H and higher
• Base frame included in the delivery, N 7/H - N 17/HR designed as table-top model
• Parallel guided downward swinging door (user protected from heat radiation)
• Gas spring dampers provide for easy door opening and closing
• Defined application within the constraints of the operating instructions
• NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional Information:

• Delivery Time: 1 week
• Packaging Details: box

Product Details:

High-Temperature Furnaces with SiC Rod Heating up to 1600 °C

These powerful laboratory muffle furnaces are available for temperatures up to 1400 °C, 1500 °C, 1550 °C or 1600 °C. The durability of the SiC rods in periodic use, in combination with their high heating speed, make these high-temperature furnaces to all-rounders in the laboratory. Heating times of 40 minutes to 1400 °C can be achieved, depending on the furnace model and the conditions of use.

• Tmax 1400 °C, 1500 °C, 1550 °C or 1600 °C
• Working temperature 1500 °C (for high-temperature furnaces HTC ../16), increased wear and tear must be expected in case of working at higher temperatures
• Furnace chamber lined with first-class, long-life fiber material, unclassified
• Housing made of sheets of textured stainless steel
• Dual shell housing for low external temperatures and high stability
• Optional flap door (HTC) which can be used as work platform or lift door (HTCT) with hot surface facing away from the operator (High-temperature furnace HTCT 01/16 only with lift door)
• Switching system with solid-state-relays, power tuned to the SiC rods
• Easy replacement of heating rods
• Adjustable air inlet opening, exhaust air opening in the roof
• Defined application within the constraints of the operating instructions
• NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

• Over-temperature limiter with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
• Square saggar for charging of up to three layers
• Lid for top saggar
• Manual or automatic gas supply system
• Process control and documentation via VCD software package for monitoring, documentation and control

Product Details:

High-Temperature Tube Furnaces with SiC Rod Heating Gas Atmosphere or Vacuum

These compact tube furnaces with SiC rod heating and integrated switchgear and controller can be used universally for many processes. With an easy to replace working tube as well as additional standard equipment options, these furnaces are flexible and can be used for a wide range of applications. The high-quality fiber insulation ensures fast heating and cooling times. The SiC heating rods installed parallel to the working tube ensure excellent temperature uniformity. The price-performance ratio for this temperature range is unbeatable.

• Tmax 1500 °C
• Housing made of sheets of textured stainless steel
• High-quality fiber insulation
• Active cooling of housing for low surface temperatures
• Type S thermocouple
• Solid state relays provide for low-noise operation
• Prepared for assembly of working tubes with water-cooled flanges
• Ceramic tube, C 799 quality
• Defined application within the constraints of the operating instructions
• NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

• Over-temperature limiter with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
• Charge control with temperature measurement in the working tube and in the furnace chamber outside the tube
• Fiber plugs
• Check valve at gas outlet avoids intrusion of false air
• Working tubes for operation with water-cooled flanges
• Display of inner tube temperature with additional thermocouple
• Alternative gas supply systems for protective gas or vacuum operation
• Process control and documentation via VCD software package for monitoring, documentation and control

Product Details:

High-Temperature Tube Furnaces - Gas Atmosphere or Vacuum

High-Temperature Tube Furnaces for Horizontal and Vertical Operation up to 1800 °C Gas Atmosphere or Vacuum

The high-temperature tube furnaces are available in either horizontal (type RHTH) or vertical (type RHTV) designs. High-quality insulation materials made of vacuum-formed fiber plates enable energy-saving operation and a fast heating time due to low heat storage and heat conductivity. By using different gas supply systems, operations can be performed under non-flammable or flammable protective or reactive gases or under vacuum.

• Tmax 1600 °C, 1700 °C, or 1800 °C
• MoSi2 heating elements, mounted vertically for easy replacement
• Insulation with vacuum-formed ceramic fiber plates
• Rectangular outer housing with slots for convection cooling
• Tube furnaces RHTV with frame for vertical operation
• Housing made of sheets of textured stainless steel
• Ceramic working tube made of material C 799 incl. fiber plugs operation under air
• Type B thermocouple
• Power unit with low-voltage transformer and thyristor
• Over-temperature limiter with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load and with selectable maximum temperature gradient as tube protection
• Switchgear and control unit separate from furnace in separate floor standing cabinet
• Defined application within the constraints of the operating instructions
• NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

• Charge control with temperature measurement in the working tube and in the furnace chamber outside the tube
• Display of inner tube temperature with additional thermocouple
• Gas tight flanges for protective gas and vacuum operation
• Manual or automatic gas supply system
• Three-zone control for optimization of temperature uniformity (only tube furnaces RHTH)
• Check valve at gas outlet avoids intrusion of false air

Product Details:

H2 Version for Operation with Flammable Process Gases

When a flammable process gas like hydrogen is used, the retort furnace is additionally equipped with the required safety technology. Only certified and industry proven safety sensors are used. The furnace is controlled by a fail-safe PLC control system (S7- 300F/safety controller).

• Supply of flammable process gas at controlled overpressure of 50 mbar relative
• Certified safety concept
• Process control H3700 with PLC controls and graphic touch panel for data input
• Redundant gas inlet valves for hydrogen
• Monitored pre-pressures of all process gases
• Bypass for safe flushing of furnace chamber with inert gas
• Torch for thermal post combustion of exhaust gases
• Emergency flood container for purging the furnace in case of failore

Product Details:

Weighing Furnace incl. Scale and Software for Determination of Combustion Loss

This weighing furnace with integrated precision scale and software, was designed especially for combustion loss determination in the laboratory. The determination of combustion loss is necessary, for instance, when analyzing sludges and household garbage, and is also used in a variety of technical processes for the evaluation of results. The difference between the initial total mass and the combustion residue is the combustion loss. During the process, the software included records both the temperature and the weight loss.

 

Product Details:

Muffle Furnaces with Flap Door or Lift Door

The muffle furnaces L 1/12 - LT 40/12 are the right choice for daily laboratory use. These models stand out for their excellent workmanship, advanced and attractive design, and high level of reliability. The muffle furnaces come equipped with either a flap door or lift door at no extra charge.

• Tmax 1100 °C or 1200 °C
• Heating from two sides by ceramic heating plates (heating from three sides for muffle furnaces L 24/11 - LT 40/12)
• Ceramic heating plates with integral heating element which is safeguarded against fumes and splashing, and easy to replace
• Insulation made of non-classified fiber material
• Housing made of sheets of textured stainless steel
• Dual shell housing for low external temperatures and high stability
• Optional flap door (L) which can be used as work platform or lift door (LT) with hot surface facing away from the operator
• Adjustable air inlet integrated in door (see illustration)
• Exhaust air outlet in rear wall of furnace
• Solid state relays provide for low-noise operation
• Defined application within the constraints of the operating instructions
• NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

• Chimney, chimney with fan or catalytic converter (not for L 1)
• Over-temperature limiter with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
• Protective gas connection to purge with non-flammable protective or reaction gases (not available in combination with chimney, chimney with fan or catalytic converter)
• Manual or automatic gas supply system
• Process control and documentation via VCD software package for monitoring, documentation and control

Product Details:

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. Equipped with the corresponding safety technology, retort furnaces are also suitable for applications under reaction gases, such as hydrogen or, in combination with the IDB package, for inert debinding or for pyrolysis processes.

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

Product Details:

The furnace chamber of the gradient furnace GR 1300/13 is divided in six control zones of equal length. The temperature in each of the six heating zones is separately controlled. The gradient furnace is usually charged from the side through the parallel swivel door. A maximum temperature gradient of 400 °C can then be stabilized over the heated length of 1300 mm. On request the furnace also is designed as a lab strand annealing furnace with a second door on the opposite side. If the included fiber separator are used charging is carried-out from the top.

• Tmax 1300 °C
• Heated length: 1300 mm
• Heating elements on support tubes providing for free heat radiation in the kiln chamber
• Charging from the top or through the right side door
• Gas damper suspension of the lid
• 6-zone control
• Separate control of heating zones (each 160 mm long)
• Temperature gradient of 400 °C over the entire length of the kiln chamber, each zone can individually be controlled
• Fiber separators dividing the chamber in six equally sized chambers
• Defined application within the constraints of the operating instructions

Additional equipment

• Up to ten control zones
• Second parallel swivel door for use as lab strand annealing furnace
• Vertical instead of horizontal strand furnace
• Process control and documentation via Nabertherm Control Center (NCC) for monitoring, documentation and control

Additional Information:

• Delivery Time: 1 week
• Packaging Details: Box

Product Details:

Ashing Furnaces with Flap Door or Lift Door

The ashing furnaces LV 3/11 - LVT 15/11 are especially designed for ashing in the laboratory. A special air intake and exhaust system allows air exchange of more than 6 times per minute. Incoming air is preheated to ensure a good temperature uniformity.

• Tmax 1100 °C
• Heating from two sides
• Ceramic heating plates with integral heating element which is safeguarded against fumes and splashing, and easy to replace
• Air exchange of more than 6 times per minute
• Good temperature uniformity due to preheating of incoming air
• Insulation made of non-classified fiber material
• Housing made of sheets of textured stainless steel
• Dual shell housing for low external temperatures and stability
• Optional flap door (LV) which can be used as work platform or lift door (LVT) with hot surface facing away from the operator
• Solid state relays provide for low­noise operation
• Defined application within the constraints of the operating instructions
• NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

• Over-temperature limiter with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
• Process control and documentation via VCD software package for monitoring, documentation and control

Product Details:

The gas-fired high-temperature furnaces of the HTB product line are specially developed for applications requiring fast heating up ramps. Gas-fired furnaces are preferred also if inflammable gases are produced in large amounts during the process. A large content of the gas emissions are already burned in the furnace chamber, so that downstream equipment like thermal and catalytic exhaust cleaners can accordingly be downsized. The furnaces are insulated with highly heat-resistant and long-life lightweight refractory brick insulation or fiber materials.

• Tmax 1600 °C
• Powerful, sturdy high-speed burners with pulse control and special flame guidance in the furnace chamber provide for good temperature uniformity
• Operation with natural gas, propane or liquified gas
• Fully automatic PLC control of the temperature, including monitoring of the burner function
• Gas fittings according to DVGW (German Technical and Scientific Association for Gas and Water) with flame monitoring and safety valve
• Reduction-resistant fiber insulation with low heat storage provides for short heating and cooling times
• Dual shell housing provides for low outside temperatures
• Exhaust hood with fittings for further discharge of the exhaust gases
• PLC control with touch panel as user interface
• Defined application within the constraints of the operating instructions

Additional equipment

• Automatic lambda control to set the furnace atmosphere
• Exhaust air and exhaust gas piping
• Recuperator burners
• Thermal or catalytic exhaust cleaning systems
• Process control and documentation via VCD software package or Nabertherm Control Center (NCC) for monitoring, documentation and control