| 摘要 |
PROBLEM TO BE SOLVED: To provide a silicon carbide heating element that can improve the temperature distribution inside a furnace that is required for a heat treatment furnace or relax its load and can effectively heat the furnace by changing the temperature on the surface of the heating part of the heating element. SOLUTION: By arbitrarily varying the diameter of a heat generation part of a heating element, surface load density is varied and the surface temperature of the heat generation part 2 is changed. By reducing the diameter of the heat generating part on the terminal sides, the temperature of the terminal sides 1 is set high, so that heat loss from the terminal sides is reduced and the temperature distribution inside a furnace is improved. On the contrary, by increasing the diameter of the heat generating part on the terminal sides 1, the temperature of the terminal sides is set low, so that metal fittings of terminal parts can be protected.
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