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Introduction to the Performance Characteristics of Silicon Carbide Furnace Tubes
Release time:
2022-04-12
Silicon carbide furnace tube It boasts excellent properties such as high strength, high hardness, excellent wear resistance, high-temperature resistance, corrosion resistance, good thermal shock resistance, high thermal conductivity, and excellent oxidation resistance. It is primarily used in industries including medium-frequency casting, various heat-treatment electric furnaces, metallurgy, chemical engineering, and nonferrous metal processing. Now let’s take a closer look at the performance characteristics of silicon carbide furnace tubes.
Characteristics of Silicon Carbide Furnace Tubes
Silicon carbide furnace tube This is a high-quality silicon carbide product made primarily from silicon carbide and produced through high-temperature firing. It boasts excellent properties, including high-temperature resistance, rapid thermal conductivity, high strength, high hardness, excellent wear resistance, good thermal shock resistance, superior thermal conductivity, and strong oxidation resistance. Both ends are fitted with special high-temperature-resistant insulating covers that effectively prevent corrosion of the heating elements by molten metals. All its performance indicators surpass those of conventional silicon carbide furnace tubes widely used in various graphite products, and it exhibits outstanding thermal conductivity and oxidation resistance.
Silicon carbide is an excellent corrosion-resistant material, and we can use it to manufacture products such as furnace tubes. When silicon carbide is used to make furnace tubes, there are various sintering methods available; the most suitable method can be selected based on the specific processing environment to enhance efficiency.
Hot-pressing and high-temperature isostatic pressing can be used to fabricate high-density silicon carbide furnace tubes, with sintering temperatures ranging from 150 to 2100°C. As a result, silicon carbide lining manufacturers find it challenging to produce products with complex shapes at reasonable costs.
Silicon carbide reaction sintering involves a green body composed of SiC and graphite powder mixed in a specific ratio. After heating, the green body reacts with liquid or gaseous silicon to form additional SiC. This method features a relatively low sintering temperature (1400–1600°C) and enables the production of complex-shaped components. However, 8% to 20% of free silicon remains in the green body, which manufacturers of lining materials consider as a limitation on high-temperature mechanical performance and restricts their application in environments involving strong acids and strong bases.
Silicon carbide furnace tube It not only boasts high room-temperature strength, corrosion resistance, wear resistance, and a low coefficient of friction, but also exhibits superior high-temperature strength and creep resistance. Its service temperature can reach up to 1600°C, making it the material with the highest known high-temperature oxidation resistance.
Silicon carbide furnace tubes have high brittleness and low fracture toughness. The addition of fibers, whiskers, and particles can enhance both toughness and strength.
The above is an introduction to the performance characteristics and sintering methods of silicon carbide furnace tubes. In fact, the silicon carbide furnace tubes to be produced are placed in tube slots at the front end of the weight plate. The furnace tubes are secured by connecting them via straps and buckles. The fixing device at the lower end of the rope is connected to a fixing groove on the surface of the weight pan. By operating the switch, the winch is raised to the appropriate height, and the locking lever at the front end of the electrical box is removed. The locking lever then passes through the first locking hole and connects to the second locking hole, thereby securing the weight plate onto the upright column. The removed fixing devices are subsequently connected to the fixing grooves on other compression plates, enabling the transport of additional furnace tubes and enhancing overall transportation efficiency. Furthermore, by utilizing the tube slots on the compression plates, it becomes possible to load more furnace tubes, significantly increasing both the quantity and efficiency of their transportation.
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Shandong Huamei New Materials Technology Co., Ltd.
Address: Middle section of Cuifang Street, Fangzi District, Weifang City