In the daily use of electric heating tube, there will be switching problems.

1. The heating wire material of the cartridge heater is inferior

Many manufacturers in order to save costs, the use of small processing plants to buy heating wire, this heating wire has no quality assurance, made into finished products after 1-2 months to burn, some even a few days to break.

2. Uneven winding of cartridge heater

When the magnesium rod of the cartridge heater is wound around the wire, some of the wires wound by the wire winding machine are easy to cross, so that the wires are not separated from the wires when the magnesium oxide powder is filled, which is extremely easy to burn the cartridge heater.

3. Improper process operation of cartridge heater

The service life of cartridge heater will also be affected by improper tube shrinking process operation, improper specification of magnesium head and magnesium base when making core and fitting tube.

4. Uneven powder addition of cartridge heater

For example, when filling magnesium powder, the vibration is not uniform, resulting in thin magnesium oxide powder under dense, or left thin and right thick, at this time, the heating area is not uniform in the work of the cartridge heater, and it is easy to burst the tube.

5. Not enough baking time

After the cartridge heater is done, it needs to be baked in the oven for 2-4 hours. The oven temperature is set at about 120-150 degrees. If the baking time is not enough, it will lead to insulation but eventually lead to electricity leakage.