Several major factors of uneven heating of single-head electric heating tube

Several major factors of uneven heating of single-head electric heating tube
1. The hardness of the resistance wire of the single-head electric heating tube is uneven
Due to the uneven hardness of the resistance wire, the spiral pitch of the wound heating wire is uneven after being stretched. This situation generally occurs when the drawn heating wire adopts a well-type return process. When winding the spiral heating wire, the uneven tension can also affect the unevenness of the spiral pitch.
2. Improper design of single-head electric heating tube resistance wire
Generally, the heating wire in the heating tube is designed in a spiral shape, that is, a spring shape. If the ratio of the diameter D of the winding core rod to the diameter d of the heating wire is D/d>8, sagging will occur when powder is added. This is the winding pitch of the heating wire, which is thinner and denser.
3. Improper process operation of single-head electric heating tube
When adding powder, the lead rod is exposed and does not meet the requirements. When it is too short, vibrate and add powder while tapping the tube to stretch the heating wire lead rod, or when it is too long, press the lead rod while vibrating and adding powder while tapping the tube. Doing so will cause the heating wire to be too thin or too dense, or even short circuit between the heating wire coil and the coil. Improper operation of the shrinking tube process will also affect the uniformity of the heating wire distribution.
4. Single-head electric heating tube powder adding equipment is defective
For example, the amplitude of the scoring equipment is unstable, the lifting speed of the guide rod is uneven, and the powder leakage speed is fast or slow. Even if the various parameters are normal, the magnesium oxide powder is thinner and denser.

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