Ceramic industry plays an important role in social construction, national defense science and people’s life. It is not only closely related to human daily life, but also has gone beyond the scope of daily use, construction and general industrial use with the development of science and technology, and is applied to cutting-edge materials such as electronics and atomic energy.

An important process in ceramic production is sintering, which is carried out in the thermal equipment. Here, the thermal equipment refers to the box furnace and its auxiliary equipment. With the development of science and technology, the original materials can not adapt to many situations and need special processing. Its raw materials are mostly high-purity oxides, carbides, nitrides and other high-temperature materials. These modern heat-resistant materials need to be manufactured and inspected at high temperatures. Therefore, new high-temperature equipment has been developed accordingly.

At present, in the production and research of electronic kiln ceramics, high-temperature ceramics and other special ceramics, various electric furnaces emerge in endlessly. Higher and higher requirements are put forward for circuits in terms of high temperature, atmosphere and pressure. Electric tunnel kiln, high temperature hydrogen filament furnace and tungsten rod furnace have been widely used. Compared with flame kilns, electric furnaces have many advantages: they have high thermal efficiency, compact heating space, high space thermal intensity, and can obtain higher temperature, which is difficult for flame kilns to achieve. Moreover, the product quality is good, the atmosphere in the furnace is relatively clean, and the temperature can be controlled abnormally accurately, which is easy to achieve automatic production. Electric furnaces do not need combustion chambers, exhaust fans, or chimneys, with simple structure and small floor space, It can be fired in various artificial atmospheres. Since there is no influence of extremely high temperature combustion chamber and furnace ash, the service life of refractory materials is long.

The box type resistance furnace has a wide range of applications. Different electric heating elements can be used at different temperatures, and the firing range of products is relatively wide. It is also suitable for the production and processing of large, medium and small products. The furnace of the box type resistance furnace is square, and different specifications can be customized according to the size of specific requirements. The box type resistance furnace is economical, simple in manufacturing process, long in service life and cost-effective.