The electric heating tube is made by inserting electric heating wire into the seamless metal tube (carbon steel tube, titanium tube, stainless steel tube, copper tube), and the open space is filled with magnesium oxide powder with excellent thermal conductivity and insulation, and then shrinked, and then processed into Various shapes required by users.
It has simple structure, high thermal efficiency, good mechanical strength, and has excellent habituation to harsh environments. Electric heating tubes can be used for heating various liquids and acid-base salts, and are also used to heat and melt metals with low melting points.
From a physical point of view, the heat is generated by the thermal effect of the current. When the current passes through the resistor, the resistor will heat up and convert the electrical energy into heat energy. This appearance is called the thermal effect of the current.
The principle of current thermal effect: electrons are accelerated in the electric field, gain kinetic energy, have speed, and then bump other particles (atoms, molecules, etc.) to make other particles gain kinetic energy, resulting in an increase in uniform kinetic energy and a rise in temperature.
From the point of view of processing technology, the heating tube is to process the resistance wire according to the requirements, the winding wire is evenly distributed in the metal tube in a spiral shape, and the space between the resistance wire and the metal tube is tightly filled with heat transfer function and High temperature resistant magnesium oxide powder with excellent insulating properties.
When the current passes through the resistance wire, heat is generated, and the heat is transferred to the external metal pipe through the magnesium oxide powder, and then the heat is supplied to the outside through the electric heating pipe.
