carbon heating element
A carbon heating element and heating element technology, applied in the direction of electric heating device, ohmic resistance heating, heating element shape, etc., can solve the problems of blocking radiated light and reducing the radiation efficiency of the oven, so as to increase the life, improve the degree of freedom, and prevent insulation effect of destruction or sparks
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[0141] A four-component system (Quaternary) composition was prepared, which was 50 wt. % to 75 wt. % (hereinafter, referred to as % or wt. %) of silicon carbide in the inorganic powder components of Table 1 above. (SiC), additionally containing 24 wt. % or less of silicon oxide (SiO 2 ) as a resistivity modifier, in such an inorganic powder, 15 wt.% to 30 wt.% of novolak resin is contained as a binder, and 0.1 to 10 wt.% of graphite is contained as a lubricant. The number average molecular weight of the novolak resin used in the examples of the present invention is preferably in the range of 1,000 to 10,000, and more preferably in the range of 3,000 to 7,000.
[0142] According to as Figure 4 In the method shown, the prepared four-component system composition is firstly mixed uniformly through the raw material mixing step, and then extruded, and then, after the stabilization heat treatment process and the first carbonization heat treatment process to the third carbonization ...
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