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Rotary microwave heating furnace

Release time:2022-08-18  Number of views:839


Equipment introduction:

NBD-WBM1700 series microwave high temperature furnace is a fine type of furnace body, electrical control in a cabinet microwave high temperature sintering equipment. The system uses 1700℃ insulation material, high temperature absorption material up to 1600℃ microwave sintering and high temperature microwave synthesis equipment, it has the characteristics of fast heating speed, high efficiency, good material consistency and so on.

It is suitable for experimental study of synthesis, ashing, expansion, heat treatment, roasting, calcination, sintering and other processes under air atmosphere. In addition to the advantages of high temperature microwave oven and sintering technology, such as "high, low, fast and low", the furnace also has a wide range of applications, easy operation and good equipment stability. The furnace is especially suitable for experimental research and development of new materials, which can achieve high quality and efficient firing of small batch products.



Technical features:

1) Rotate the sample table to ensure uniform heating of the sample;

2) Safe and reliable full microwave shielding cavity design;

3) Equipped with continuous adjustable high stability long life dedicated industrial microwave source;

4) With a simple operation control system;

5) Beautiful appearance, compact and compact mechanism, easy to use and maintain;

6) Touch screen operation, intuitive display of temperature curve.

application area

1. Inorganic powder synthesis

3 Electronic ceramic powder: barium titanate, barium strontium titanate, strontium titanate, barium zirconate titanate, etc.

4 Lithium ion battery cathode materials: lithium cobalt, lithium manganese, etc.

5 All kinds of colors, glazes, inorganic pigments, etc.

6 Other inorganic powders: manganese tetroxide, lithium yttrium, zinc ferrite, tricolor phosphor red powder, glass, cement, etc.

2) Sintering of electronic ceramics  Varistor, thermistor, piezoelectric ceramics, microwave dielectric ceramics, etc.

3) Sintering of oxide ceramics and refractory materials 

Alumina, zirconia, magnesium oxide and other oxide composite materials.

4) Sintering of magnetic materials Ni-Zn ferrite, gyromagnetic ferrite, etc.

5) Ash, incineration, burning experiment.



work environment

1) With AC 220V±10V, 50Hz stable power supply;
2) Clean water source;
3) Environment type: Temperature: 5 ~ 40℃ Humidity: 5 ~ 85%

specimen rotating holder

Sample table rotation rate


Speed regulation mode

Touch speed control

Electrical Spec




Thermocouple type

Infrared thermometer 300--1800℃

Air intake specifications

Φ6.35 PTFE pipe with sleeve adapter

output power

0.2 ~ 1.4kW continuously adjustable

Microwave output frequency

2.45 GHz±25MHz

Microwave leakage rate


type of cooling

Water cooling (water cooling in tank)

 boundary dimension


Reaction cavity size


Control system


NBD-101P embedded operating system;

1. Use a special industrial microwave source to ensure the continuous and stable operation of the equipment for a long time;

2. It can achieve ultra-fast heating, greatly shorten the holding time, and double the experimental efficiency;

3. Microwave output power is stepless adjustable to achieve accurate temperature control curve;

4. Adopt imported high-precision infrared thermometer to measure the sample temperature directly;

5. Provide manual, automatic, constant temperature three operating modes and can be freely switched;

6. Can set and store multiple temperature control curves, automatic storage of operation records, compatible with printers; Real-time temperature control curve display, realize the dynamic monitoring of heating process.

Structure display





1. The microwave source equipment works under high voltage and has high requirements for the working environment, so it should be avoided in places with large humidity and dust.

2. If the microwave source equipment is operated improperly, it may be harmed by high voltage electric shock and microwave radiation. The high pressure of microwave sources can be deadly, therefore, the use of microwave source equipment operators must be strictly trained personnel, while having relevant knowledge and experience.

3. When maintaining the high-voltage power supply, the residual voltage is maintained in the device even if the power switch is turned off. If necessary, short-circuit the high-voltage capacitor.

4. Every time a microwave source is used, all safety systems must be properly in place and working properly.

5. Detection of microwave leakage must be mandatory and frequent, at 5 cm from the measurement point, and under normal operating conditions, the microwave leakage should not be greater than 5 MW /cm3. If the value exceeds the specified value, troubleshooting should be carried out according to the description in the manual.

6. The microwave source equipment must be checked and ensured that the water cooling circulation system is turned on and in normal working state before being turned on each time, otherwise it must not be turned on to avoid damage to the microwave source.

Seven. The cooling circulating water used by the microwave source should meet the requirements of the relevant water quality in GB10067.1-88, the total hardness (CaO mg equivalent) is less than 10, the inlet temperature is 5-30℃, the outlet temperature is less than 50℃, and the working pressure is 0.06 ~ 0.12MPa. The cooling water should be cleaned regularly (it is recommended to clean once every three months), if the cooling water is blocked, it will cause the magnetron to overheat, shorten the service life, and even be burned.

8. Microwave sources are vulnerable to damage under any of the conditions of overcurrent, overvoltage, overpower and poor cooling, especially the magnetron, its core component, which is very delicate and expensive. Therefore, the anode current should be controlled below the rated value in the long-term operation of the equipment to ensure the service life of the magnetron.

9. The cavity of the microwave sintering furnace must be cleaned frequently to remove all sediment, including the waveguide window; Remove the mixed metal and other foreign matter that may cause arc, and the sediment at the waveguide window, blind plate, etc., should be cleaned frequently with alcohol and kept clean. If the waveguide window is polluted, the microwave energy will be blocked and cannot enter the sintering furnace, or strong heat will be generated on the surface, and even high frequency ignition phenomenon will damage the microwave source in serious cases.

10. When sintering volatile and corrosive materials, the impact of materials on equipment and protective measures should be fully considered; Special attention should be paid to the effect of material volatilization on the waveguide window, observation window, blind plate and temperature measuring window during sintering.


1 year warranty with lifetime support (warranty does not cover consumable parts such as saggar and seals). 


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