Analysis of Causes of Short Circuit of Single Head Tube

A heating tube with a small diameter at one end (single-head electric heating tube) has always been found to have short-circuit, disconnection, and open-circuit heating tube electrodes between the two leads. At present, due to the continuous requirements of the equipment for the small volume and high energy of the heating tube With the improvement, many manufacturers blindly select materials and produce, resulting in the deterioration of the quality of the heating tube, and frequent problems. Many people, when a problem arises, do not analyze and find the problem, but simply go to a conclusion and suspect that the quality of the magnesium oxide core rod of the electric heating tube is defective. Let the manufacturer of the magnesium oxide core rod change the original magnesium oxide with a magnesium content of 95% to 98% or even 99% purity to increase the probability that the two lead wires will not be short-circuited, but this is not the case.

 

So what are the reasons for the short circuit or open circuit of the single-head electric heating tube?

1. The distance between the two holes of the lead wire is too close, causing the single-head electric heating tube to short-circuit.

2. The position of the heating area of ​​the electric heating tube has been moved to the lead-out port, and it is exposed to the air.

3. Too high temperature is a sufficient and necessary condition for short circuit caused by the rated voltage of the second lead wire.

4. When in use, the aperture of the mold hole is horn-shaped. This is due to the defect of the module drilling process, which affects the heat conduction.

5. The nozzle of the warhead electric heating tube appears loose at the end of the lead wire, which affects heat conduction and air breakdown, and causes a short circuit of the single-head electric heating tube.

6. The distance between the inferior sealing silica gel and the first circle of screws at the root of the lead wire is too close, and the production process is produced at this time.

7. Using iron, chromium and aluminum as the excessive resistivity of the lead wire to increase the temperature of the lead wire of the electric heating tube and cause an accident.