What is the material of the electric heating tube, what are the main technical difficulties and characteristics?

- Jun 24, 2019-

The electric heating tube is a tubular electric heating element, which is composed of a metal tube spiral resistance wire and crystalline magnesium oxide powder. The high-temperature resistance wire is evenly distributed in the stainless steel seamless tube, and the crystalline magnesium oxide powder having good thermal conductivity and insulation performance is filled in the void portion, and the structure is not only advanced, but also has high thermal efficiency and uniform heat generation, and when a current flows through the high-temperature resistance wire, it is generated. The heat is diffused to the surface of the metal tube by the magnesium oxide powder, and then transferred to the heated member or the air to achieve the purpose of heating.

Main technical difficulty: Although the stainless steel electric heating body is a relatively mature technology, the material of stainless steel has its particularity and the welding process is also complicated. Therefore, when designing the structure of the heating body, special attention should be paid to the uneven heat transfer of stainless steel. The internal stress caused by this is focused on making some special flexible designs in this area. At the same time, relevant tests must be done to verify the reliability of the design, so as to ensure the use of the product and take advantage of the stainless steel heating tube.


1. Most of the hot air circulates in the tank, which has high thermal efficiency and saves energy.

2. Using forced ventilation, the box is equipped with an adjustable air distribution plate, and the material is evenly dried. The heat source can be selected from steam, hot water, electricity, and far infrared.

3. The whole machine has low noise and stable operation. Temperature control, easy installation and maintenance.

4, a wide range of applications, can dry a variety of materials, is a general drying equipment.