HIGH TEMPERATURE MICROWAVE FURNACE

HIGH TEMPERATURE MICROWAVE FURNACE
HIGH TEMPERATURE MICROWAVE FURNACE
LABOTRONTM HTE M30K B or M60K B
The LabotronTM HTE M60K B or M30K B is a microwave-assisted high performance furnace designed for
elevated temperature processing (e.g. sintering) and can be used both for laboratory & industrial
applications.
LABOTRON’s high performance is assured by the choice of aluminium as wall-material (reminder:
aluminium has over 10 times higher electric conductivity than stainless steel) and by the integrated
impedance tuner, i.e. E/H tuner with magic-T. Due to this, the LABOTRON HTE M60K B or M30K B can
equally treat high microwave absorbing materials as well as very low absorbing ones, ex. ceramics, glass
etc. The homogeneity of the treatment is guaranteed by two main construction features:
- ‘Mirror polishing’ finish of the internal walls allowing for the irradiated heat by the sample to return to
the sample itself thus, increasing the efficiency of the heating process (90% IR reflexion);
- Turning table with alternate rotation.
In addition, the integrated microwave generator allows microwave treatment in continuous wave (CW) or
in controlled pulsed regime.
12 porte du Grand Lyon, 01702 Neyron Cedex, France, www.sairem.com
 : +33 (0)4 72 01 81 60,  : +33 (0)4 72 01 81 79, E-mail : commercial@sairem.com
The Labotron HTE can be used for the treatment of high volume samples, significant for scaling-up.
Equally, when used adequately, the system allows for very fast rate of heating.
REF.
HMI Control
Microwave cavity
Temperature measurement/control
Heating rate
Vacuum/Pressure treatment
Microwave generator
(switch mode power supply, magnetron head
and isolator)
Windows/Ports
Turn table
Gas inlets/outlets
Impedance matching
Safety
Mains
Microwave generator cooling
Sample thermal insulation (option)
Dimensions, weight
OBSERVATION
LABOTRONHTEM60KB with max. 6 kW microwave
LABOTRONHTEM30KB with max. 3 kW microwave
Coloured touch screen digital display 7.5’’
Data loading in csv files, USB, RJ45
Programming: power, temperature, time, microwave pulse, incident
& reflected power etc.
Aluminium, internal size 427x427x488 mm (V = 88 L), 30 mm
thick walls, inside-wall mirror polishing, turn table, hand-operated
door
Standard: from oven’s top central port via 2 infra-red
thermometers: 1st from 50 to 400 0C, 2nd from 400 to 1800 0C,
regulation and steps temperature control.
When microwaves are applied, the product to be heated increases
its temperature depending on its thermal properties (Cp)
For 6 kW microwave power transferred in to product, the heating
rate is 30 0C/s for 1 kg sample, with average Cp = 2 Jg-1K-1 (before
heat loss overcomes the heating rate). P=m*CP*Δ/t
Integrated DN25 flange for primary vacuum (vacuum pump not
supplied).
Maximum dif. pressure: 0.5 bar (safety release valve)
2450 MHz, adjustable power from 600 to 6000 W or from 0 to
3000 W, continuous wave & pulsed operation.
Low-ripple reducing the risks of arcing/plasma inside the oven
when operating at high electric field, low pressure and high
temperature
Quartz, microwave sealed on the front door.
Diameter 330 mm, thickness 2 mm, continue or alternative rotation
Material of construction Micalite
Standard: 5 gas connections 3/8 G (1 off on the bottom side, 1 off at
the rear, 1 off on the left panel, 2 off on the upper panel),
manometer from 30 mm Hg vac to 150 psi, safety release valve (1.8
bar)
Manual E/H impedance tuner & magic T reducing the reflected
power level even in case of high power density (small load inside
the cavity).
Field density measurement
Safety interlock connected to the microwave generator to avoid
running the oven with the door open.
On-screen sample temperature warning when furnace’s door opens
(to avoid wrong manipulation when sample temperature > 60 0C)
3 x 400 V + earth, 11 kVA
By water, min. flow 6 L/min, min. 3 bar. Quick release connectors
mounted on water inlet and outlet
Two models of insulation ‘cage’ can be ordered, 1 L and 8 L; the
cage consists of six independent solid walls arranged over the
sample like Lego, no screws or other fixing required. The insulating
material is made out of pressed silica fibre (max temperature 1200
°C, IR reflexion > 90% between 300 et 2500 μm).
An upper aperture (diam. ~ 50 mm) will allow temperature
measurement via the 2 IR thermometers.
Inside cage dimensions: 1 L model 100 x 100 x 100 mm, 8 L model
200 x 200 x 200 mm, or other sizes on request.
For accurate dimensions see attached drawings, 260 kg (with
support)
Min. sample diam. 30 mm, max. processing T = 1800 0C
12 porte du Grand Lyon, 01702 Neyron Cedex, France, www.sairem.com
 : +33 (0)4 72 01 81 60,  : +33 (0)4 72 01 81 79, E-mail : commercial@sairem.com
12 porte du Grand Lyon, 01702 Neyron Cedex, France, www.sairem.com
 : +33 (0)4 72 01 81 60,  : +33 (0)4 72 01 81 79, E-mail : commercial@sairem.com
12 porte du Grand Lyon, 01702 Neyron Cedex, France, www.sairem.com
 : +33 (0)4 72 01 81 60,  : +33 (0)4 72 01 81 79, E-mail : commercial@sairem.com
12 porte du Grand Lyon, 01702 Neyron Cedex, France, www.sairem.com
 : +33 (0)4 72 01 81 60,  : +33 (0)4 72 01 81 79, E-mail : commercial@sairem.com
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