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What materials are the electric heating tubes made of?

Aug 20, 2021

What materials are in the electric heating tube, how the electric heating tube is produced, and what is the production process of the electric heating tube. For these customers who will definitely have a lot of questions, what materials are in the electric heating tube can actually be known based on the introduction of the knowledge of the electric heating tube.


 The electric heating tube is a (tubular electric heating element) with a metal tube as the shell (including stainless steel electric heating tube, copper tube electric heating tube), and spiral electric heating alloy wires (nickel-chromium, iron-chromium alloy) are uniformly distributed along the central axis of the tube, and the gaps are filled and compacted Magnesium oxide sand with good insulation and thermal conductivity, both ends of the nozzle are sealed with silica gel. This metal-clad electric heating element can heat air, metal molds and various liquids.


Thus we know the material of the electric heating tube. It is magnesia sand (powder) that determines the quality of the electric heating tube.


The production process of the electric heating tube is basically carried out according to this step.

Cutting: stainless steel cutting by cutting machine;

Wire winding: automatic motor winding electric heating wire;

Powder adding: the powder filling machine puts the electric heating wire and powder into the steel pipe;

Shrinking pipe: pipe shrinking machine compresses steel pipe;

Pipe cutting: remove the process plug at both ends of the small lathe;

Annealing: heat treatment in an electric annealing furnace;

Digging: Digging machine digs out the magnesium powder in the mouth;

Cutting rod: the small punch makes the two terminals the same length;

Intermediate inspection 1: the high-voltage value, resistance and size of the high-voltage meter, resistance meter, and tape measure tube;

Oven or electric oven high temperature exhaust, small lathe for car tube head;

Polishing machine polishes both ends;

Intermediate inspection 2: Check the polishing quality;

Welding: argon arc welding machine welding pipes and casings (fasteners);

Tube bending: tube bending machine forms;

The oven drains moisture, and the insulation meter detects the insulation performance;

Polishing machine polishing;

Welding inserts for electric welding machines;

Sealing, moisture-proof;

Final inspection: full electrical, appearance, and size inspection for high-voltage instrument, insulation meter, resistance meter, tape measure, and caliper;

Finished product packaging.

The above is the entire production process of the electric heating tube. Of course, there are slight changes in the process of specific specifications.


The electric heating tube is an electric heater that specializes in converting electrical energy into heat. Because of its low price, simple structure, high mechanical strength, high thermal efficiency, safety and reliability, easy installation, long service life, and pollution-free characteristics, it is widely used in various Heating occasion


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