Introduction of Different Furnace
Silicon Carbide Heating Element/SiC Heating Element manufacturers introduce a variety of electric furnace. Different heat transfer conditions and gas flow conditions in the furnace are different, directly affecting the temperature uniformity of the furnace. In order to obtain the ideal high temperature zone, fully meet the technical requirements, it is best based on the structural characteristics of the furnace reasonable distribution of electric furnace power. The electric heating group, partition layout, respectively, temperature control.
Van and trolley resistance furnace: For small electric furnace and furnace length of not more than 1m of the furnace, the power can be evenly distributed in the furnace wall and bottom. In a large box-type electric furnace, you must consider the heat in the large section of the appropriate increase in power, in a small place where the heat, the power will be reduced. For example, large or furnace longer box resistance furnace, the furnace near the furnace full length of 1/4 ~ 1/3, the power can be increased to the average power of 15% to 25%. Sometimes the heating body is also arranged on the door. In the allocation of power, the furnace wall unit load should take a reasonable range, usually 20-25kW / m².
Pit type resistance furnace: the mouth of this type of resistance furnace part of the mouth due to the lax of the seal or the thinner heat dissipation and the various components of the heat short circuit and other reasons, great heat loss. Mouth part of the furnace due to gas floating and heat, the temperature is often low. Therefore, there is no mechanical ventilation of the well resistance furnace, should be in the furnace and the bottom of the site to increase the appropriate power. In the power distribution, one or several heating zones are divided according to the shape and size of the furnace (the ratio of the furnace depth H to the effective diameter D). The principle of power distribution is usually: the power of each heating zone or a single heating zone of each phase power should be the same, but the area or the phase in the furnace depth of the high degree of difference.