Silicon carbide is divided into black silicon carbide and green silicon carbide, with the latter having higher purity and commonly used in the abrasive industry and electrical engineering. The production of silicon carbide heating elements, such as silicon carbon rods, utilizes the properties of silicon carbide being conductive, thermally conductive, stable in nature, and having a long service life. Silicon carbon rods do not react with any acids. However, at around 1300 degrees Celsius, they can undergo chemical reactions with alkalis and alkaline oxides.

 Silicon carbon rods have a certain degree of oxidation resistance. When the rod temperature reaches 800 degrees Celsius, an oxidation reaction begins on the surface. As the temperature continues to rise, the silicon carbon rod forms a protective layer of SiO2 with the air, which prevents further oxidation of the rod and extends its service life. The protective layer of silicon dioxide has a specific melting point; when the rod temperature exceeds 1600°C, the protective layer may be damaged or peel off, causing the silicon carbon rod to continue oxidizing. Continued use will regenerate the protective film. Therefore, it is recommended to use silicon carbon rod elements continuously and avoid excessively high rod temperatures. Proper design of the electric furnace and silicon carbon rod parameters, along with correct usage, are key to maximizing the lifespan of silicon carbon rods.

 The typical furnace temperature for silicon carbon rod heating elements is between 1000°C and 1350°C. Hollow silicon carbon rods are more commonly used because they do not require specific molds, have low production costs, and are simple and convenient to manufacture, with a wide range of available lengths and diameters. Solid silicon carbon rods, on the other hand, are limited by mold constraints and have fewer specifications, but they offer a longer service life. They also have advantages in terms of heating speed and temperature resistance.

 U-shaped silicon carbon rods are commonly used in production. They feature single-end wiring for convenient use and are often applied in experimental furnaces, roasting furnaces, Jianzhan kilns, metal melting furnaces, glass melting furnaces, crucible furnaces, and other types of kilns. They come in various diameters and lengths. Dengfeng Minghui High-Temperature Components Co., Ltd. offers custom-made products with stable quality and uniform heating. Each rod undergoes strict testing and is certified before leaving the factory. For custom silicon carbon rods, please feel free to call us. We will calculate based on parameters and provide a reasonable quotation.