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        How to extend the service life of equal diameter silicon carb

        The silicon carbide rods of equal diameter will gradually oxidize to form silicon dioxide when used in an oxidizing atmosphere, and the resistance will gradually increase, leading to the aging of the silicon carbide rods. In addition, the following factors are related. Let's take a detailed look:
          1. Impact, etc The factors of the service life of the diameter silicon carbide rod generally include: the use temperature, the surface load density, the atmosphere and material of the furnace treatment, the furnace operation mode, and the wiring method are different.
          2. The higher the temperature of the carbon rod, the shorter the life, especially after the furnace temperature exceeds 1400°C (SH and SL type, while the spiral rod is at 1600°C), the oxidation speed will increase and the life of the carbon rod will be shorter, so please try not To make the surface temperature of the carbon rod too high, it is necessary to reduce the difference between the furnace temperature and the temperature of the carbon rod.
          3. The surface load density refers to the allowable rated power per unit surface area of the heating part of the rod. Surface load density = rated power (W)/heating part surface area (cm2). Practice has proved that the larger the load density, the surface temperature of the heating element and the furnace temperature The difference is also large. If the load density is large, the surface temperature of the rod body will be high, the resistance will increase quickly, and the life of the SIC rod will be short. Therefore, the surface temperature load density, furnace atmosphere and temperature of the equal diameter silicon carbide rod are directly proportional to the aging speed of the SIC rod. The life of the SIC rod is inversely proportional.
          From the above introduction, we can see that there are many factors that affect the quality and performance of the same diameter silicon carbide rods. Therefore, if you want to improve the efficiency of the carbon rods and extend their service life, you must pay attention to the above points in use. factor!
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