Description for cartridge heater
Classical structure of cartridge heater (Popular structure) is same to heating tube,Generally consists of five parts:Insulator, sealing material,leading rods, filling material, electric wire, metal protective tube, terminal.Coil electric wire and leading rod are set in the metal protective tube.
manufacturing process : put coil heating wires through the seamless steel pipe, copper or aluminum tube, Using filling machine more to fill insulation and thermal oxidation object evenly in the gaps,such as Crystal magnesium oxide powder (alumina or clean quartz sand are all available) etc.,And then use shrink tube machine contract pipe diameter, make oxide medium dense(make density achieves above 3.3 g/cm3),Ensure the heating wire cut off from the air, the center position touch pipe wall and don’t offset.It can increase heating power more than ten times per unit area.the using life can be improved to more than 10 years,Comparing with large heating power electric element ,tubular heaters can save 5% material,Thermal efficiency can reach above 90%
Difference of cartridge heater
1.Appearance:Single-head electric heat pipe is a head (end), general electric heat pipe is at both ends
2.Inner Instruction:Difference in the appropriate winding between these two kinds of heating tube.
3.manufacturing process :More process for cartridge heater than others ,such as contract tube,that can make sure high power and long using life.
Advantages of cartridge heater
1.From appearance:
Mini cartridge heater:Diameter2.2~5.9mm
Standard cartridge heater:Diameter6~25mm
Big cartridge heater:Diameter25~100mm
2.No limited for length,20-5000mm is available
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