How to choose the resistance wire diameter of the electric heating element during production?

- Dec 15, 2020-

How to choose the resistance wire diameter of the electric heating element during production?


How to choose the resistance wire diameter of the electric heating element during production, too thick or too thin will affect the use effect and life of the heating element.

 

The most important basis for determining the diameter of the resistance wire of an electric heating element is the maximum heating temperature of the actual heating element. We do not consider the material of the heating wire. The maximum temperature of resistance wires of different wire diameters is required.

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Below we enumerate the requirements for the diameter of the resistance wire in the heating rod under different temperatures:

A.0.4mm Maximum operating temperature: 950—1000℃

B.0.3mm Maximum operating temperature: 900—950℃

C.0.2mm Maximum operating temperature: 850—900℃

D.0.15mm Maximum operating temperature: 820—850℃

 

The above is to select different wire diameters of resistance wires according to the temperature. First of all, according to the temperature requirements, the wire diameter should be determined according to the thick wire of the diameter of the heating element diameter. If the diameter of the electric heating element is too small, choose too thick resistance wire, the insulation layer will inevitably be insufficient, which will affect the withstand voltage and service life of the heating element. Depending on the diameter of the tube, the minimum insulation thickness of the insulation layer must be greater than or equal to 1.5mm, so that the pressure resistance of the heating element will be guaranteed!

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