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How are silicon carbide furnace tubes manufactured?

Release time:

2022-07-26

　　How are silicon carbide furnace tubes produced? First, we need to confirm... Silicon carbide furnace tube The primary raw material is silicon carbide. Silicon carbide is formed after being subjected to high temperatures. The resulting material exhibits excellent properties, including superior wear resistance, good thermal shock resistance, excellent thermal conductivity, strong antioxidant capability, high-temperature resistance, rapid heat conduction, high strength, and high hardness.

　　Once a special high-temperature insulating cover is installed, the electric heating elements can be protected against corrosion by passing through a molten metal solution; their performance metrics all surpass those of silicon carbide furnace tubes made from various graphite products. Experts are working hard to lower the operating temperature and manufacturing costs of these materials by improving the fabrication process of zirconia-based electrolyte membranes, thereby paving the way for industrial-scale production. This represents a new and important direction for the future development of silicon carbide. Meanwhile, Silicon carbide furnace tube Excellent thermal conductivity and antioxidant properties significantly enhance the value and service life of silicon carbide furnace tubes.

　　Silicon carbide furnace tubes not only exhibit high-temperature strength and creep resistance, but also boast excellent wear resistance, room-temperature strength, low coefficient of friction, and corrosion resistance. These properties enable silicon carbide furnace tubes to operate reliably at temperatures up to 1600°C and give them superior oxidation resistance among known materials. However, silicon carbide furnace tubes have the drawbacks of high brittleness and low fracture toughness. In subsequent manufacturing processes, these properties can be improved by adding fibers, whiskers, and particles to enhance both toughness and strength. At the same time, silicon carbide is an outstandingly corrosion-resistant material, making it ideal for fabricating furnace tubes and other products. When producing silicon carbide furnace tubes, various sintering methods are available, including low-temperature sintering, high-temperature sintering, and closed-system sintering, among others. The appropriate method can be selected based on the specific processing environment to optimize efficiency. For example, high-density silicon carbide furnace tubes can be manufactured using hot pressing or high-pressure isostatic pressing techniques. The sintering temperature typically ranges from 150°C to 2100°C. Nevertheless, it remains challenging to produce silicon carbide components with complex shapes and high costs through conventional methods. One such approach is reaction sintering, in which a green body composed of silicon and graphite powder is heated according to a specific ratio to form silicon carbide. This method allows for the production of silicon carbide at relatively low sintering temperatures. However, some free silicon often remains in the green body, which leads lining manufacturers to believe that this limits the material's high-temperature mechanical performance as well as its applicability in strong acids and strong bases.

　　As for the process movement of silicon carbide furnace tubes, if the silicon carbide furnace tubes are removed from the process tank after production, that presents yet another challenging issue. How can we ensure their integrity in such an environment? The solution is as follows:

　　1. The products manufactured Silicon carbide furnace tube Placed in the tube groove at the front end of the counterweight plate, the furnace tube is secured by a belt and buckle.

　　2. Attach the removed fasteners to the fasteners on other compression plates, and connect the mounting plate at the lower end of the rope to the mounting groove provided on the surface of the counterweight plate. 3. By operating the switch, raise the pulley to the appropriate height, remove the locking rod from the front of the electrical box, pass the sliding rod through the connector, and secure it onto the upright post on the counterweight plate, thereby enabling the conveyance of more furnace tubes and doubling the efficiency. In this way, not only is the operation simple, but multiple sets of durable plates can also be installed.

　　In addition, the furnace tubes can be loaded through tube slots provided on the durable plate, which increases both the throughput and handling capacity of the furnace tubes. Anti-slip pads placed within the tube slots serve to protect the furnace tubes.

What is the primary function of a silicon carbide furnace tube?

Silicon carbide nozzles are now essential products in the automotive industry.