Electric heating tube manufacturers show you the structure of heating tubes!

Regarding the structure of the electric heating tube, many friends do not understand it very well. The electric heating tube manufacturer specializes in the production and development of electric heating tubes and brings you a clear and clear introduction to the structure of the electric heating tube.

1.Outer tube: copper tube, copper-plated tube, stainless steel tube, aluminum tube, quartz tube, etc.

2. Filler: electrical grade magnesium oxide powder

3.Cold needle: stainless steel, iron nickel plated, etc.

4. Sealing material: ceramic, silica gel, glass, RTV glue, silicone oil, etc.

5. Resistance wire: Ni80Cr20.0Cr25Al5, etc.

The different names are

①Insulators: white porcelain heads are generally used

②Sealing material: The main purpose of the sealing material is to make the insulating filling material difficult to absorb water vapor in the environment, and to ensure that the electric heating tube has good insulation performance. Commonly used sealing materials mainly include: sealing plugs made of paint film, silicone organic paint, epoxy resin, and silicone rubber.

③ Leading rod: Iron is generally used, because iron transfers heat faster. Of course, general customers have special requirements and stainless steel lead rods can be used, but they need to be raised with our salesman.

④ Filler: Generally there are magnesium oxide powder and quartz sand. We have never used quartz sand to produce electric heating tubes. The cheap electric heating tubes on the market all contain quartz sand. The magnesium oxide powder in the electric heating tube of Yancheng Feiyu Alloy Electric Appliance Co., Ltd. is all high-temperature modified magnesium oxide powder used, and the electric heating tube made of modified magnesium oxide powder is moisture-proof.

⑤Electric heating wire: mainly iron-chromium-aluminum and nickel-chromium alloy wires. Iron-chromium-aluminum is cheaper, generally without special instructions, iron-chromium-aluminum alloy wires are used in electric heating tubes. Nickel-chromium alloy wire is more expensive. The difference between the two wires: the working temperature of iron-chromium-aluminum alloy materials can reach 1400 ℃, which is enough to meet the needs of electric heating tubes. However, nickel-chromium wire has good flexibility and good oxidation resistance, while iron-chromium-aluminum wire is relatively brittle.

⑥Metal sheath: The main ones are stainless steel (sus201, 304, 321, 316, 310, etc.), copper, and carbon steel (iron). Choose different metal jacket tubes according to different working environments.