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Introduction to Silicon Carbide Tube

 

Silicon Carbide Tube Overview

Silicon carbide tube has the advantages of high strength, high hardness, good wear resistance, high temperature resistance, corrosion resistance, good thermal shock resistance, high thermal conductivity and good oxidation resistance. Silicon carbide tubes are mainly used in intermediate frequency casting, various heat treatment electric furnaces, metallurgy, chemical industry, non-ferrous metal refining and other industries; siliconcarbide protection tubes are widely used in metallurgical sintering furnaces and intermediate frequency heating casting furnaces, and the length can be customized according to the actual needs of the applications.

Characteristics of Silicon Carbide Tubes

Silicon carbide tube is a high-quality product fired at high temperature with silicon carbide as theprimary raw material. It has high temperature resistance, corrosion resistance, fast thermal conductivity, high strength, high hardness, good wear resistance, and good thermal shock resistance, high thermal conductivity and good oxidation resistance and other excellent features. If it is equipped with a special high-temperature resistant insulating sleeve at both ends, the corrosion of the electric heating element (including silicon carbon rod, electric furnace wire, etc.) by the metal solution can be effectively avoided. Various indicators of silicon carbide are better than various graphite products. Silicon carbide tubes are mainly used in non-ferrous metal tempering, intermediate frequency casting, various heat treatment electric furnaces, metallurgy, chemical industry and other industries. Silicon carbide protection tube has excellent thermal conductivity, oxidation resistance, thermal shock resistance, high temperature wear resistance, good chemical stability, strong acid resistance, and does not react with strong acids and alkalis.

Industrialization Development of Silicon Carbide Devices

Silicon carbide JFET has the characteristics of high input impedance, low noise and good linearity, and is one of the fastest growing silicon carbide devices. Compared with MOSFET devices, JFET devices do not have the reliability problems caused by defects in the gate oxide layer and the limitation of low carrier mobility. At the same time, its unipolar working characteristics make it maintain a good high frequency working ability.

In addition, JFET devices have better high temperature operating stability and reliability. The gate junction structure of silicon carbide JFET devices makes the threshold voltage of JFETs mostly negative, that is, normally-on devices, which are extremely unfavorable for power electronics applications and cannot be compatible with current general drive circuits.

Advantages of Silicon Carbide Ceramics

1. The thermal conductivity is good, and the tube wall is thin (only a few millimeters), so the product responds very actively to temperature changes;

2. Not affected by corrosion;

3. It will not melt at high temperature and will not pollute the molten metal;

4. Can be used to melt alloys rich in sodium and strontium;

5. The surface of the product will not adhere to the slag, which is very easy to protect;

6. High temperature resistance (up to 1600℃);

7. Good thermal shock resistance;

8. The product has high hardness and is difficult to break;

9. Cost-effective.

10. The service life is more than half a year.

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