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    PRODUCTS Current position:HOME > PRODUCTS > 8.Vacuum Muffle Furnace

Horizontal vacuum furnace with quartz chamber(Tmax 1200℃)

Release time:2020-11-02  viewed:122

Equipment Profile:
VAH vacuum furnace is used for heating all kinds of materials in a clean environment.
The product adopts annular electric heating wire to evenly heat the high-purity quartz vacuum chamber in vitro, with high thermal efficiency, fast heating speed and good temperature uniformity.
Uniform circulation inside the protective atmosphere, high temperature resistant sealing rings are used in the sealing parts, and the water-cooled stainless steel sealing system is safe and reliable.
The equipment has a complete automatic touch screen operation performance, and has the function of over-temperature, broken couple and low water pressure alarm.










Configuration details


        Equipment features:
Double layer insulation structure with air-cooled interlayer;
High purity Al2O3 fiber refractory insulation material, maximum energy saving;
High purity alumina coating on refractory furnace can prolong service life.
High purity quartz furnace plug helps you create a custom temperature gradient in the tube.
Perfect over - temperature, short - even, off cooling water protection measures, safe!
Thermometers and observation Windows are interchangeable (single option)



Electrical specifications

AC220V   4KW


11500 ℃ (<1hour)

Tmax of working

≦1100 ℃ 

heating rate

≤  20 ℃/min

heating zone siza

Ø190mm *200

Diaphragm chamber


Temperature field distribution


As shown in the figure: This is the temperature area curve of the equipment for reference only

control system


1. 15 temperature curves can be stored in advance to avoid the trouble caused by repeated setting of different experimental processes;
2. The experiment process is more intuitive and the operation is more convenient;
3. Nbd-101e embedded operating system graphical interface in English and Chinese, 7-inch true color touch screen input, intelligent man-machine dialogue mode, nonlinear style temperature correction;

4. Overtemperature alarm, couple breaking prompt, cooling water breaking, leakage protection, etc.;

 temperature precision

+/- 1 ℃

 heating element 


Annular heating of Mo-doped FE-Cr-Al alloy heater has uniform and reliable temperature field

sealing system 




  • Vacuum degree: ≤10Pa (mechanical pump)

  • Air supply system and pressure measurement


Mechanical pressure gauge with damping oil and 1 way small flow high precision float flowmeter

net weight



1. When the equipment is in use, the pressure inside the furnace shall not exceed 0.15mpa (absolute pressure) to prevent the equipment from being damaged due to excessive pressure;
2. When used under vacuum, the operating temperature of the equipment shall not exceed 1000℃.
3. There is a high pressure inside the gas supply cylinder, and when the gas is pumped into the furnace tube, the pressure reducing valve must be installed on the cylinder. It is suggested that the small pressure reducing valve should be selected for the test, and the range of the pressure reducing valve is 0.01Mpa-0.15mpa, which will be more accurate and safe when used.
4. When the furnace temperature is higher than 1000℃, the furnace tube can not be in a vacuum state, the furnace tube air pressure and atmospheric pressure should be equal, keep in the state of atmospheric pressure, to prevent cavity damage;
5. The operating temperature of the high-purity quartz tube under normal pressure for a long time is not less than 1150℃;
6. During heating and sintering, the valve at the exhaust end should be opened to avoid the cavity rupture caused by the increase of cavity pressure during heating.
If the air valve needs to be closed to heat the sample, it is necessary to always pay attention to the number of the pressure gauge. The pressure of the barometer should be within the safe range shown. If the absolute reverse pressure is ≤ 0.05mpa, or the forward pressure ≥ 0.15mpa, the valve of the exhaust end must be opened immediately to prevent accidents (such as cavity rupture).
7. For high-temperature sintering, the equipment must be connected with a water cooler to avoid melting of the sealing silicone ring at high temperature.
8. Carefully sintering materials containing alkaline ions, alkaline ions will cause crystal loss or cavity.

after-sales service 

2 years warranty, lifetime support (warranty does not cover consumable parts, such as quartz cavity and O-ring)


This site product introduction content (including product pictures, product description, technical parameters, etc.), for reference only.
There may be some difference between the content and the actual situation due to the late update, please contact the customer service staff of the company for confirmation.
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