Envirotech

　Microwave firing Feature

Dielectric materials exhibit self-heating when subjected to microwave radiation. Rapid and uniform firing is achieved for ceramics and other materials by exploiting these characteristics, and environmental effects can therefore be reduced by reducing energy consumption.


Conventional firing (material heated externally by radiation)		Microwave firing (material itself, and suscepter, generate heat)

Materials are conventionally heated externally. Microwave firing can shorten the firing period, particularly in large products, by leveraging the self-heating characteristics of microwaves. Microwave firing does rely on heat-transfer from the surface to the core as in conventional firing.

IIn microwave firing, the surface temperature becomes lower than the core due to self-heating characteristics. We have solved this problem by introducing a suscepter (a special refractory material able to generate heat from microwave radiation). Products can therefore be fired using microwave radiation much more uniformly by heating them internally and externally, and firing of the products under precise firing control is achieved at maximum firing speed.

Effects of self-heating by microwave radiation allow lower firing temperatures and reduced firing times due to the uniform temperature distribution in each product. Accordingly, higher strength is achieved by restraining grain growth, and quality is improved by minimizing evaporation of high vapor pressure elements within the products.

Microwave firing reduces environmental load by shortening firing period and lowering temperature.

*Depending on the fired material, microwave firing may have no effect.
*Trial firings are available on request to confirm heating characteristics of the fired material.

　Continuous Microwave Kiln

Continuous microwave kiln using travelling wave

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