The basic structure of the heating tube

The stainless steel electric heating tube is a metal tube as the shell, and the spiral electric heating alloy wires (nickel-chromium, iron-chromium alloy) are evenly distributed along the central axis of the tube. The gaps are filled and compacted with magnesia sand with good insulation and thermal conductivity. Both ends of the tube mouth are used. Sealed with silicone or ceramic, this metal-clad electric heating element can heat air, metal molds and various liquids.

 

     According to the different use status, safety and installation needs of the electric heating tube, the electric heating tube will also include other structures such as the sealing structure, the structure of the terminal part, the flange, the temperature control or the fuse.

 

Flange heating tube Electric heating tube Heating tube performance:

 

The stainless steel electric heating tube is made by placing electric heating elements in the metal tube, and densely filled with crystalline magnesium oxide powder with good heat resistance, thermal conductivity and insulation in the gap part, and processed by other processes. It has the characteristics of simple structure, high mechanical strength, high thermal efficiency, safety and reliability, easy installation and long service life. It is widely used in all kinds of saltpeter tanks, water tanks, oil tanks, acid-base tanks, fusible metal melting furnaces, air heating furnaces, drying furnaces, drying ovens, hot press molds and other devices.

Flange heating tube electric heating tube heating tube use precautions

 

1. The components should be stored out of dryness. If the insulation resistance drops below 1 megohm due to long-term storage, they can be dried in an oven at about 200°C for several hours (or pass the components under low pressure for several hours), or restore the insulation. resistance.

 

2. When carbon buildup is found on the surface of the tube, it must be removed before use, so as not to reduce the efficiency or even burn out the components.

 

3. When melting bitumen, paraffin and other solid oils, the voltage should be lowered for use, and then the voltage should be increased to the rated voltage after melting. To prevent the power concentration from reducing the service life of the components