How to distinguish between double headed electric heating tubes

How to distinguish between double headed electric heating tubes

1, Different structures

A single headed electric heating tube is a type of heating tube that has two leads or terminals leading out from one end of the heating tube.

A double headed electric heating tube is a type of heating tube where two leads or terminals are led out from each end of the heating tube.

2, Different power design standards

Single headed electric heating tubes and double headed electric heating tubes have different power designs due to the different wiring methods and the arrangement of internal resistance wires.

The surface load of a single headed electric heating tube is higher than that of a double headed electric heating tube with the same diameter and length.

Price of single head electric heating tube

3, Classification of common single head electric heating tubes and double head electric heating tubes

Knowing the difference between single headed electric heating tubes and double headed electric heating tubes makes it easy to distinguish which ones are single headed electric heating tubes and which ones are double headed electric heating tubes.

The common single head electric heating tubes are mold single head electric heating tubes, threaded single head electric heating tubes, and single head fin electric heating tubes.

1. Uneven hardness of resistance wires used in electric heating tubes

Due to the uneven hardness of the resistance wire material, the pitch of the electric heating wire after winding is uneven. This situation usually occurs when the pulled out electric heating wire is in the recycling process, and the uneven tension between the spiral heating wires can also affect the unevenness between the pitches

2. Improper design of resistance wires for electric heating tubes

In general, the heating wire inside the electric heating tube is spiral, that is, spring shaped. When the ratio of the diameter D of the wire core rod to the diameter D of the heating wire is D/D>8, there will be a sagging phenomenon when adding powder, which is the upper and lower density of the heating wire.

3. Improper operation of electric heating tube process

When adding powder, the exposed rod does not meet the requirements. When the powder is too short and twisted, the powder is pulled out and the tube is pulled out. When the rod is too long, it is compressed when the powder vibrates. When doing so, the heating wire is either too thin or too dense, and even the heating wire and coil are short circuited. Improper operation of the shrink tubing process can also affect the uniformity of the hot wire distribution.

4. The electric heating tube grave filling equipment has defects

For example, the amplitude of the dosing device is unstable, the lifting speed of the guide rod is uneven, and the powder leakage speed is fast but slow. Even if all parameters are normal, magnesium oxide powder is too dense.

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