1. Choose the quality of insulation materials
You need to check the temperature required for your experiment. For example, the commonly used temperature in the experiment is 1500℃, then the insulating material of the box-type resistance furnace must be able to withstand the high temperature of 1600℃-1700℃, that is, the temperature of the electric furnace can reach 1600-1700℃. This can meet your experimental requirements and achieve the longest possible service life under normal use without abnormal conditions. Similarly, the commonly used experimental furnace with a temperature of 1700°C needs to select an insulation layer of 1800°C before it can be used. Conducive to experimentation.
2. The quality of the heating element of the high temperature experimental electric furnace is good or bad
It is not difficult to see that the heating elements selected within a certain range are different, so how to judge the quality of the box-type resistance furnace heating element? First, select a suitable heating element for the experiment. For example, the common temperature is 100°C. You can choose resistance wire or silicon carbide rod as the heating element, but silicon molybdenum rod cannot be used as the heating element. However, considering the price, the choice of resistance wire is of course cost-effective. The good working range of silicon molybdenum rod is 1200-1700°C, and the temperature below 1100°C has an impact on the life of silicon molybdenum rod.
3. Selection of shell material and quality:
Box-type resistance furnace manufacturers said that everyone should choose furnaces with good materials, similar to the metal of this carbon steel plate, and resolutely resist furnaces made of iron sheet, because the life of the furnace has a lot to do with the material of the shell. The stove is very hot, and the thin iron sheet is not safe.
