What is the reason for the slow temperature rise of the experimental resistance furnace?

1. Slow heating may be caused by a problem with the electric furnace wire. Check and repair or replace it in time. If it cannot be repaired, replace it with a new electric furnace wire of the same specification.

2. It may be that the power supply voltage is lower than the normal voltage, and the heating power of the electric furnace is not enough when it is working. The three-phase power supply lacks phase and needs to be adjusted and overhauled.

3. In addition, the power supply voltage may be normal, but the working voltage of the electric furnace is low. This is because the voltage drop of the power supply line is too large or the socket and the control switch are not in good contact. Find the correct reason, and then adjust and replace it.

4. Whether the heating rate of the temperature control system is too small. The disadvantage of a slow heating rate is that it is time-consuming. Too fast a heating rate will cause the sample reaction to be out of sync with the heating rate. Too fast a temperature rise will cause the temperature difference between the surface and the inside to be too large, which will cause excessive internal gravity. There are small cracks.