In the late 1990s, due to the widespread use of electric heating tubes in China, there are now many styles of electric heating tubes. In southern China, the electric heating tubes used for molds with one end output are called single head tubes or single end electric heating tubes, which are very similar. So.
Single head tube, also known as single end electric heating tube or cartridge electric heating tube, is a type of electric heating tube (tubular electric heating element). In China's electric heating industry, there is a long known model: M3.
The service life can also correspondingly increase to over 10 years. Overseas, it is called a barrel type heater, which is also a similar term because the shell of the barrel is cylindrical and one end is also blocked, which is similar to the saying in China that it is called a single head tube and has the same craftsmanship. The heating energy per unit area can increase by more than ten times. Then, use a shrinking machine to shrink the diameter of the pipe, making the oxygenated medium dense (with a density of over 3.3g/cm3), ensuring that the electric heating wire is isolated from the air, and the core position does not shift and collide with the pipe wall. The spiral electric heating wire and the lead out are located in the center of the metal protective sleeve. Its manufacturing process involves threading the spiral electric heating wire into seamless steel pipes, copper pipes, or aluminum pipes. The gaps between them are evenly supplemented by a multi tube replenishment machine to provide both insulation and heat conduction oxygen medium, such as crystalline magnesium oxide powder.
The typical structure of a single head tube is the same as that of an electric heating tube, which usually consists of five parts: insulator, sealing material, lead out rod, supplementary material, electric heating wire, metal protective sleeve, and terminal. Compared to electric heating elements with the same amount of heat energy, tubular electric heating tubes can save 5% of electric heating materials, and the heating rate can reach over 90%.