Silicon carbide furnace tube has high strength, high hardness, good wear resistance, high temperature resistance, corrosion resistance, good heat resistance and shock resistance, large thermal conductivity, good oxidation resistance and other excellent functions, mainly used in medium frequency casting, various heat treatment furnace, metallurgy, chemical industry, non-ferrous metal exercise and other occupations.
Characteristics of silicon carbide furnace tubes
Silicon carbide furnace tube is silicon carbide as the main raw material, excellent silicon carbide products made by high temperature firing, with high temperature resistance, fast thermal conductivity, high strength, high hardness, good wear resistance, good heat resistance and earthquake resistance, good thermal conductivity, good oxidation resistance and other excellent functions at both ends of the installation of special high temperature insulation cover. It can effectively avoid the corrosion of metal solution on electric heating elements (including silicon rods, electric heating furnace wires, etc.), and the main application of silicon carbide protective tubes with various indicators better than those of various graphite products has thermal conductivity, oxidation resistance, heat shock resistance, and high temperature resistance
Manufacturing technology of silicon carbide furnace tube
The product is silicon carbide as the main raw material, through the special process of high temperature roasting of excellent silicon carbide products, the length standard can be customized according to the actual needs of customers.
The first use of silicon carbide furnace tubes
Widely used in non-ferrous metal training, aluminum products degassing system, printing and dyeing machinery, zinc and aluminum training and product processing and other occupations.
Industrial development of silicon carbide furnace tube
Silicon carbide furnace tube has the characteristics of high input impedance, low noise, good linearity, etc. It is one of the fast developing silicon carbide devices at present, and it has been commercialized first. Compared with MOSFET components, JFET components do not have the reliability problems caused by gate oxygen layer defects and the limitation of low carrier mobility, and maintain good high frequency operation capability due to unipolar operating characteristics. In addition, JFET devices have good operating stability and reliability at high temperatures. Due to the structure of the gate electrode of the silicon carbide JFET device, the threshold voltage of the JFET is usually negative, that is, there are more common devices, which is extremely unfavorable to its application in the field of power electronics, and is incompatible with the current universal drive circuit. By introducing the device technology of groove injection or mesa groove structure, the enhanced device with normal operating state is developed. However, since the enhanced devices are mostly formed at the cost of a certain front-end resistance characteristics, it is easy to achieve higher power density and current capacity of the constant-break (depletion type) JFET, and the method of connecting the depletion type JFET devices to the cascaded upper chain is achieved by connecting low-voltage Si class MOSFETs in series. The drive circuit of a cascaded JFET device is naturally compatible with the drive circuit of a general-purpose silicon device. The cascade structure is very suitable for high voltage and high output situations, rather than traditional silicon IGBT devices, directly avoiding the compatibility problem of the drive circuit.
The advantages of silicon carbide are as follows.
1, the heat transfer function is good, the tube wall is thin (only a few millimeters), the product temperature change response is very warm;
2, not affected by corrosion
3, high temperature does not dissolve, metal liquid pollution-free;
4, can be used to dissolve sodium and strontium rich alloy;
5, the appearance of the product is not attached to the slag, the protection is very simple;
6, high temperature resistance 1600;
7. Strong thermal shock resistance
8, high hardness, not easy to break
9 Cost-effective, life in more than half a year.
The above is the performance characteristics of silicon carbide furnace tube, if you need to know more, you can feel free to contact us!
Post time: Aug-24-2023