Tube furnaces

Tube furnaces are mainly used because their cylindrical working space enables the samples to be heated on all sides, uniform gas supply, and they are stable against external and internal pressure. They are space-saving and can be adapted to individual customer requirements in a variety of ways.

To furnace inquiry

Tube furnace type LOBA

(Laboratory Oven/Furnace for Broad Applications)

A characteristic feature of the LOBA tube furnace is its simple and robust construction with many design and equipment variants. It is versatile and can be operated vertically, inclined and swivelled. In addition, it has adaptable fastening options that allow it to be integrated into larger devices. This furnace type is also stackable. Different materials are available for insulation, if required and agreed upon, also those which are free of aluminium silicate fibres.

Short description:

Temperatures up to 1200 °C
Atmospheres: oxidizing, reducing, inert and vacuum
Tube diameter: 4 to approx. 250 mm
Heated length: 10 to 1500 mm
Control unit separated from furnace
Integratable in complex devices
Power range up to maximum 3 x 12 kW

Heating system:

Single-zoned
Multi-zoned
Dual zone for adjustable gradients
Gradients determined by heating coil

Equipment features:

Frame for holding the furnace in different working positions
Insert working tube with gas-tight end caps (for working in defined atmospheres and vacuum)
Sample thermocouples
Viewing window
Charging systems
Dropping devices
Weighing device
Crucibles and boats
Gas supply units
Afterburner
Wide range of control units with and without PC interfaces
Software for program and gas control

Applications:

Melting
Calcination
Pyrolysis
Debinding
Sintering
Degassing
Vacuum tempering
Crystal Growing
Transport tests
Contact angle measurements
Fibre treatment
Physical experiments
Quenching tests
Solid state chemical analyses
Thermochromatography

Tube furnace type LOSA

(Laboratory Oven/Furnace for Stand Apparatuses)

Type LOSA is an inexpensive and space-saving tube furnace for chemical laboratories with integrated power supply,
prepared for mounting on tripods.

Short description:

Temperatures up to 650 °C
Atmospheres: ambient atmosphere only
Tube diameter up to approx. 40 mm
Heated length: 160 mm when closed on one side, 220 mm when open on both sides
Control unit incorporated in the furnace
Can be integrated in complex devices
Power range up to maximum 1 kW

Heating system:

Single-zoned

Equipment features:

Crucibles and boats

Applications:

Melting
Calcination
Degassing

Tube furnace type LORA

(Laboratory Oven/Furnace for Reducing Atmospheres)

This high temperature furnace with working tube accessible from both sides is called type LORA. It is particularly suitable for work in defined atmospheres. It is available in many design and equipment variants. Requirement: The heating conductor chamber must be constantly purged with a small amount of protective gas (< 1 l/min). Special feature: Even at the highest temperatures there is no permeation of oxygen through the tube wall into the working chamber.

Short description:

Temperatures up to 1750 °C
Atmospheres: inert, oxidizing and reducing
Working position: horizontal, vertical and swivel
Tube diameter: maximum up to 100 mm (optimum 40 mm)
Heated length: 300 to 1000 mm
Control unit separated from furnace
Can be integrated in complex devices
Power range up to maximum 3 x 6 kW

Heating system:

Single-zoned
Multi-zoned
Gradients determined by heating coil

Equipment features:

Frame for holding the furnace in different working positions
Insert working tube with gas-tight end caps (for working in defined atmospheres and vacuum)
Sample thermocouples
Viewing window
Charging systems
Dropping devices
Weighing device
Crucibles and boats
Gas supply units
Afterburner
Wide range of control units with and without PC interfaces
Software for program and gas control

Applications:

Melting
Calcination
Pyrolysis
Debinding
Sintering
Degassing
Crystal Growing
Thermochromatography
Contact angle measurements
Fibre treatment
Vacuum tempering
Quenching tests
Investigation of reaction kinetics in downdraft
Viscosity measurements of melts
Physical experiments
Solid state chemical analyses
Gas chromatography

Tube furnace type LORA-G

(Laboratory Oven/Furnace for Reducing Atmospheres – G (Shortcut for word closed in German)

The type LORA-G is a cold wall version of the type LORA and its working tube is only accessible from one side. Due to both characteristics this furnace is suitable for work in combination with gloveboxes. Special feature: It is possible to equip the furnace with an evacuable housing, which allows a very defined setting of the atmosphere in the vicinity of the working chamber. Requirement: The heating conductor chamber must be constantly purged with a small amount of protective gas (< 0.021 l/min).

The furnace can be operated very well in or from gloveboxes. For oxygen-free gloveboxes, the heating conductor compartment can be connected to the glovebox. A separate protective gas supply for the heating conductor is then not necessary.

Short description:

Temperatures up to 1800 °C
Atmospheres:
– Old construction: ambient atmosphere only
– New design: inert, oxidizing and reducing
Standard tube diameter up to 60 mm
Heated length: 200 mm
Control unit separated from furnace
Fits through glovebox locks (outer diameter < 250 mm)
Can be flanged to glovebox walls
Power range up to approx. 3 kW
Wall temperature below 40 °C (with cooling)

Heating system:

Single-zoned

Equipment features:

Vacuum pump with measuring device and inert gas dosing device for stand-alone operation
Rack for furnace use in changing working positions
Ampoule with a maximum inner diameter of 50 mm (for work in all atmospheres and vacuum)
Lifting floor for easy loading from a glovebox from below
Charging device for easy charging in a horizontal arrangement
Sample basket for loading the top-loader version
Rotating device for powder treatment at maximum temperatures
Gas supply units
Sample thermocouples
Observation window
Adapter flanges for easy mounting on glovebox walls
Fibre channel for transporting fibres from a glove box through the furnace to the outside or into a second glove box
Crucibles and boats
Sample rack
Wide range of control units with and without PC interfaces
Software for program and gas control

Applications:

Physical experiments
Solid state chemical analyses
Melting
Calcination
Pyrolysis
Tempering of SiC wafers
MOx Synthesis
Sintering
Vacuum tempering in ampoule
Degassing
Fibre treatment

Tube furnace type LOSiC

(Laboratory Oven/Furnace with SiC heating elements)

LOSiC describes a high-temperature tube furnace with SiC heating elements and working tube accessible from both sides, for temperatures up to 1500 °C with many equipment variants. It is preferably used at high temperatures for non-reducing atmosphere. The heating elements work in air.

Short description:

Temperatures up to 1500 °C
Atmospheres: all gases (depending on pipe material)
Tube diameter: 50 to 200 mm
Heated length up to 1200 mm
Control unit separated from furnace
Can be integrated in complex devices
Power range up to maximum 10 kW

Heating system:

Single-zoned
Multi-zoned

Equipment features:

Insert working tube with gas-tight end caps (for working also in oxygen-free atmospheres)
Charging systems
Sample thermocouples
Observation window
Frame for holding the furnace in different working positions
Crucibles and boats
Gas supply units
Afterburner
Weighing equipment
Wide range of control units with and without PC interfaces
Software for program and gas control

Applications:

Melting
Calcination
Pyrolysis
Vacuum tempering
Debinding
Sintering
Degassing
Crystal Growing
Thermochromatography
Gas chromatography
Contact angle measurements
Fibre treatment
Quenching tests
Investigation of reaction kinetics in downdraft

Tube furnace type LOMOS

(Laboratory Oven/Furnace with MOSi2 heating elements)

LOMOS is a high-temperature tube furnace with MoSi₂ heating elements and a horizontal working tube accessible from both sides, for temperatures up to 1800 °C with many equipment variants. It is also preferably used at high temperatures for non-reducing atmospheres and its heating elements work in air.

Short description:

Temperatures up to 1800 °C
Atmospheres: all gases and vacuum (depending on pipe material)
Tube diameter: 50 to 100 mm
Heated length up to 1500 mm
Can be integrated in complex devices
Power range up to maximum 20 kW

Heating system:

Single-zoned
Multi-zoned

Equipment features:

Insert working tube with gas-tight end caps (for working also in low-oxygen atmospheres)
Charging systems
Sample thermocouples
Observation window
Maximum temperature window for gas sensing elements (the transparent medium is at furnace temperature)
Crucibles and boats
Gas supply units
Afterburner
Wide range of control units with and without PC interfaces
Software for program and gas control

Applications: