1. Product introduction
The stainless steel double-head electric heating tube is made of metal tube, and the spiral electric heating alloy wire (nickel-chromium, iron-chromium alloy) is uniformly distributed along the center of the tube. The gap is filled with magnesia sand with good insulation and thermal conductivity. Sealed with silicone or ceramic, this metal armored heating element heats air, metal molds and various liquids. According to the different use state, safety and installation requirements of the electric heating pipe, the electric heating pipe also includes other structures such as a sealing structure, a structure of a terminal portion, a flange, a temperature control or a fuse.
2, product performance
The stainless steel electric heating tube is formed by placing an electric heating element in a metal tube and closely filling the void portion with crystalline magnesium oxide powder having good heat resistance, thermal conductivity and insulation, and is processed by other processes. The utility model has the advantages of simple structure, high mechanical strength, high thermal efficiency, safety and reliability, simple installation and long service life. Widely used in a variety of saltpeter tanks, water tanks, oil tanks, acid and alkali tanks, fusible metal melting furnaces, air heating furnaces, drying furnaces, drying ovens, hot stamping and other devices.
3, electric heating tube use precautions
1) The components should be stored outside of the dry. If the insulation resistance drops below 1 megohm due to long-term placement, it can be dried in an oven at about 200 °C for several hours (or the component is low pressure for several hours), ie, the insulation is restored. resistance.
2) When it is found that there is carbon deposit on the surface of the pipe, it must be removed after use to avoid reducing the efficiency and even burning the components.
3) When melting solid oil such as asphalt and paraffin, the voltage should be reduced, and then increased to the rated voltage after melting. To prevent power concentration and reduce component life.