How to make the most suitable hole for cartridge electric heating tube?

- Dec 24, 2020-

How to make the most suitable hole for cartridge electric heating tube?

We have met such a customer before and ordered a batch of cartridge heating tubes back. During the installation, they found that the flanged electric heating tube could not be inserted into the mounting hole, or it was tight or loose after installation.Customers who know the cartridge electric heating tube should know, this is actually the relationship between the diameter and the aperture of the cartridge electric heating tube. So how to make a suitable hole for installing a cartridge electric heating tube? The following editor of Jaye Heater will introduce to you

We know that air has an obstructive effect on heat conduction, so the gap between the tube wall of the cartridge electric heating tube and the hole wall of the mold cannot be too large. If it is too large, the temperature of the electric heating tube cannot be transmitted in time, So the surface temperature of electric heating tube will increase, and the internal temperature of the electric heating tube will also increase. When the internal temperature of the electric heating tube is high to a certain level, the resistance wire will burn out, and the electric heating tube will burn out at this time.

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At the same time, the gap between the pipe wall of the cartridge electric heating tube and the hole wall of the mold cannot be too small, because the diameter of the electric heating tube will become thicker due to thermal expansion and contraction after the electric heating tube is energized and heated. When the electric heating tube is out of use, it cannot be pulled out when I want to replace it.

Therefore, the difference between the diameter of the cartridge electric heating tube and the installation hole diameter must be within a certain range. According to Jaye Heater's years of production experience, their value is appropriate to be 0.1-0.2mm.

Such a value can not only ensure that the heat of the electric heating tube is transferred to the mold in time, but also enable the electric heating tube to be smoothly taken out after energization and heating. Therefore, it is necessary to confirm the diameter of the cartridge electric heating tube before ordering. Then confirm the installation hole diameter of the cartridge electric heating pipe according to the pipe diameter. Similarly, if the hole has been drilled, the diameter of the cartridge electric heating tube must be confirmed according to the hole diameter.

Through the above introduction, we know that the hole diameter of the cartridge electric heating tube is 0.1-0.2mm larger than the tube diameter is the most suitable. Customers who don’t understand the relationship between the diameter and diameter of the cartridge electric heating tube can be used as a reference.

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