RD—15HAMicrowave sintering equipment

　　Main technical parameters：

　　1Product model：RD—15HA

　　2Power input： Three-phase380±10% ,50HZ;

　　3working frequency： 2450MHz±50MHz

　　4Rated input apparent power：≤22KVA

　　5Output microwave power：≤15KW（Adjustable power）

　　6Overall dimensions (L * w * h)：1450×1250×2100 mm

　　7Internal diameter of rotary table：Φ900×1700mm(Dial two)

　　8Drying efficiency: 15Kg per hour

　　9Time controller, "hours, minutes, seconds" arbitrary adjustable

　　10Control: ordinary button control, temperature control, monitoring device

　　11Microwave leakage: according to the national GB10436-89 standard (GB = 5mw/cm2) with GB 5226 electrical safety standard

　　12Working environment: 5~40 C, relative humidity is less than or equal to 80% surrounding non corrosive gas and conductive dust and explosive gas

　　Applicable to chemical materials in the range of 400~1500 DEG C for curing, sintering, shaping, calcination. Microwave sintering device mainly used in all kinds of high quality ceramic sintering, activated carbon, manganese sulfate, nanometer material, silicon nitride, silicon carbide, alumina, aluminum nitride, zirconia ceramic; sintering electronic devices: PZT piezoelectric ceramic varistor resistance, and so on.

　　The microwave sintering or microwave combustion synthesis refers to the heat source by microwave irradiation instead. The blank materials are uniformly mixed or pre press molding by oneself to microwave energy absorption (or dissipation) reaches a certain temperature, causing the combustion reaction or complete sintering process. Because it is compared with conventional technologies. Belonging to two different heating modes. Therefore, microwave sintering has its own characteristics. The principle of microwave dielectric heating, chemical raw materials once placed in a microwave field, the polar molecules and nonpolar molecules caused by polarization, into a dipole. According to the directional electric field direction, because the electric field belongs to alternating electric field, so the dipole with the electric field changes caused by rotation and vibration, such as frequency is 2450MHZ, 250 million times per second the rotation and vibration produced similar to the molecular friction between. Should be, to absorb the energy of the electric field and heating, the object itself becomes the heating element. When using the traditional way of heating, ignited always start from the sample surface, burning from the surface to the propagation inside the sample completed the final sintering reaction. By microwave radiation, the situation is different. By microwave has strong penetrability, it can go deep into the sample, first to the center of the sample temperature increased rapidly to reach ignition point and trigger combustion synthesis. The sintering wave along the radial direction from the inside outward, it will make the whole sample is almost uniformly heated, the final completion of the sintering reaction.

　　Microwave ignition ignition temperature gradient generated in the sample (dT/dt) method is much smaller than conventional ignition in other words, microwave sintering process than the traditional wave propagation sintering heating more uniform. The metal tantalum by using microwave irradiation heating to 1300-2000 DEG C high temperature sintered. Experiments show that when pressed high density samples the combustion rate, wave propagation caused by the traditional heating mode is greatly reduced, even for "self extinguishing" can ignite. However, if by microwave irradiation, due to the increase in temperature is the reaction material itself (or diffusion) microwave energy absorption results, as long as the microwave source continuously supplied to energy, the temperature of the sample will soon reach ignition temperature (T1) reaction. Once the cause of the heat, to further increase the combustion temperature reached the temperature of the sample (T2), the sample absorption capacity of microwave radiation also increases, which would guarantee The reaction can be maintained at a high enough temperature (T3, T1) were, until the reaction is complete. Microwave combustion or microwave sintering synthesis is a controlled process. That is to say, we can according to the nature of the product requirements, through a series of parameters adjustment, artificially control the combustion wave propagation. Is a significant advantage compared with the traditional microwave combustion technology. Microwave power regulation, can be directly used microwave source with adjustable power to control the sample of microwave energy absorption (or dissipation), product performance more in line with our requirements.