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Reaction-sintered silicon carbide, silicon carbide nozzles, radiation tubes, burners, heat-exchange tubes, silicon carbide furnace tubes, burners, silicon carbide plates
How are silicon carbide furnace tubes manufactured?
Release time:
2022-05-30
How to produce and manufacture Silicon carbide furnace tube First, we need to confirm that silicon carbide is the primary raw material. After being subjected to high temperatures, silicon carbide transforms into a specific substance. The resulting material 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 excellent oxidation resistance.
Once equipped with a specially designed, high-temperature-resistant insulating cover, the device prevents corrosion of the heating elements by molten metals, thereby safeguarding their integrity. Its performance metrics surpass those of silicon carbide furnace tubes made from various graphite products, while also boasting excellent thermal conductivity and oxidation resistance. By refining the manufacturing process of zirconia-based electrolyte membranes, experts have succeeded in lowering both the operating temperature and production costs of these materials, paving the way for industrial-scale production—a promising and innovative new direction for silicon carbide in the future. Thanks to their high ionic conductivity, outstanding chemical stability, and structural robustness, zirconia ceramics have been successfully researched and widely adopted as electrolyte materials.
About Silicon carbide furnace tube An introduction to the performance characteristics and sintering methods of silicon carbide furnace tubes. Silicon carbide furnace tubes not only exhibit high-temperature strength and creep resistance but also possess excellent wear resistance, low friction coefficient at room temperature, and corrosion resistance. They can operate reliably at temperatures up to 1600°C and are known for their excellent oxidation resistance among existing materials. Despite their high brittleness and relatively low fracture toughness, these drawbacks can be mitigated during subsequent manufacturing processes by incorporating fibers, whiskers, and particles, which help enhance both toughness and strength.
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, various sintering methods are available—low-temperature sintering, high-temperature sintering, and closed-system sintering—allowing us to select the most appropriate method based on the specific processing environment to enhance efficiency. Hot pressing and high-temperature isostatic pressing can produce materials with high density. Silicon carbide furnace tube The sintering temperature ranges between 150 and 2100℃. It is difficult to manufacture silicon carbide products with complex shapes and high costs. Reaction-sintered silicon carbide is produced by heating a green body composed of silicon and graphite powder in a specific ratio, resulting in the formation of SiC. This method operates at a relatively low sintering temperature, making it suitable for producing silicon carbide. However, some free silicon remains in the green body; therefore, lining manufacturers believe this limits the material's high-temperature mechanical performance as well as its applicability in strong acids and strong bases.
About Silicon carbide furnace tube After the silicon carbide furnace tubes are produced, moving them out of the process tank presents yet another challenging problem. How can we ensure their integrity under such conditions? To address this, we place the freshly produced silicon carbide furnace tubes into tube slots at the front end of a counterweight plate and secure them in place using straps and buckles. The removed fasteners are then attached to other compression plates for further stabilization. At the bottom end of the rope, a fixing clip is connected to a dedicated slot on the surface of the counterweight plate. By operating a switch, the pulley system lifts the tubes to an appropriate height, and then the locking rod—located at the front end of the electrical control box—is inserted through the connection. Once the counterweight plate is securely fixed onto the support pillar, it becomes possible to transport even more furnace tubes, doubling the overall efficiency. This method is highly convenient; by setting up multiple sets of durable plates equipped with tube slots, we can efficiently load and transport a greater number of furnace tubes, significantly boosting throughput. Additionally, anti-slip pads can be installed within the tube slots to provide extra protection for the furnace tubes.
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