The microwave vacuum high-temperature sintering furnace burned material to absorb microwave energy so that its temperature rises purpose of sintered high-speed rotation of the polarization in the microwave field. Compared with the traditional sintering furnace has the following advantages: 1. Greatly shorten the sintering time than the conventional furnace sintering. 2. Shorten the processing time, energy costs are greatly reduced. 3. The overall volumetric heating, rapid heating, heating uniformity, fine texture high quality sintered function, electronic structure of ceramic; magnetic materials as well as powder metallurgy materials. 4. Small footprint, excellent working environment, easy automatic control, save manpower. Abroad since the late 1990s due to the obvious advantages of the new technology to get the very rapid development. From the early 1990s to the present, has always insisted on the research and development of this new technology, programmable microwave source to solve a series of high stability microwave high temperature ceramic sintering technology; package of high-performance microwave transmission system; single-mode and the large volume of multi-mode microwave cavity CAD preferably; key technical issues of the sintered sample temperature measurement and control technology, has developed several sets of Wuhan University of Technology, Tsinghua University, Sun Yat-sen University, Southwest University for Nationalities, Wuhan Institute of Chemical Technology institutes 5kw/2450mhz test, experiment room microwave sintering system, metal oxides, ceramics, phosphor and a variety of materials such as high-temperature sintering, has achieved good results.
Microwave temperature vacuum sintering furnace technical requirements
1. The material is calcium salt, specific gravity of 1.4 g / cc, the material itself absorb microwave performance is not good.
2. Sintering temperature: 1100 ° C, holding a certain time;
3. The devices require the production of not less than 600 kg / h.
Equipment for continuous production, stable and reliable, easy to operate.
Microwave temperature vacuum sintering furnace design
Microwave vacuum high-temperature sintering furnace according to the principle of microwave sintered at high temperature insulating material, although it belongs to absorb microwave poor material, but as long as the purpose of the proper absorption of microwave fine materials in connection with the mixed in appropriate proportions can also achieve high-temperature calcination, select toner or silicon carbide material powder evenly mixed and heated, many trials to obtain good results as a basis for the proposed design as follows: The system consists of microwave power and transmission system; multimode the rectangular microwave heating cavity; microwave with infrared insulation section; material handling systems; temperature measurement and control systems and system control cabinet and rack components. By technology and production requirements at the same time, preliminary calculation 220kw microwave power, we compare several programs may be implemented, to ensure performance requirements, technical difficulty, manufacturing and operating costs and other factors to consider using the following preferred embodiment: tube microwave power combiner; multi-stage multi-mode the rectangular microwave heating chamber series combination; design and selection of metal plate conveyor, frequency control transmission end of the to add infrared radiation auxiliary heating and insulation; the designed import and export two-stage microwave suppressor to ensure that the microwave leakage safety standards; system; material temperature control; total control of the whole plc.
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