The electric heating tube is formed by installing electric heating wires into seamless metal pipes (carbon steel pipe, titanium pipe, stainless steel pipe and copper pipe), filling the gap with magnesia powder with good thermal conductivity and insulation, and then shrinking the pipe, and then processing it into various shapes required by users. It has the advantages of simple structure, high thermal efficiency, good mechanical strength and good adaptability to harsh environment. The electric heating tube can be used for the heating of various liquids and acid-base salts, and is also suitable for the heating and melting of metals with low melting point.
Features of electric heating tube:
When making the electric heating pipe, the metal electric heating element is used as the heating body. According to the requirements of different heating pipe power and voltage, the resistance wire is made into a spring shape with a winding machine, then the electric heating wire is threaded into the seamless steel pipe, and then the protective sleeve is tightly filled with magnesium oxide powder with good insulation and heat conduction. After that, the pipe diameter is narrowed by the pipe shrinking machine. This manufacturing process can not only make the oxide medium dense, but also ensure that the electric heating wire is isolated from the air, so that it does not offset at the center and touch the pipe wall. Avoid uneven conduction or heating on the surface of the electric heating tube.
1、 From the appearance, we can see that the single head heating pipe is a kind of heating pipe with two terminals at one end and sealed at the other end; The double head heating pipe is a kind of heating pipe with double head outgoing line.
2、 The application range of single head heating pipe and double head heating pipe is different. Single head heating pipe is mainly used in mold heating, plastic packaging, pharmaceutical machinery, laboratory experiment, chemical industry, etc. The double head heating pipe is mainly suitable for heating in air and liquid, such as closed and circulating air heating, special gas heating and heating of water, oil and acid-base liquid.
3、 There are also some differences in power design between the two. Generally, the surface load of single head heating pipe is higher than that of double head heating pipe. Therefore, under the same conditions, the power of single head heating pipe is greater than that of double head heating pipe, and the service life is longer.
4、 The characteristics of the two are also different. The diameter of single head heating pipe is relatively small, which can be 3mm; The length is unlimited, which can be 20-2000mm; The power can be about 2-5 times that of the normal heating tube; The utility model has the advantages of simple structure, high mechanical strength, power saving and energy saving. According to different purposes, the double head heating pipe can be divided into U-shaped heating pipe, double u-flange heating pipe, threaded electric heating pipe, double head fin heating pipe, double head waterproof electric heating pipe, etc.
