Hexagonal nut stainless steel electric heating tube, Wuxi threaded electric heating tube, stainless steel electric heating tube

1、 The concept of electric heating tube
Tubular electric heating element (electric heating tube) is made of metal tube as the shell (including stainless steel and copper tube), and spiral electric heating alloy wire (nickel chromium, iron chromium alloy) is uniformly distributed along the central axis of the tube. The gaps are filled and compacted with magnesium oxide sand with good insulation and thermal conductivity. The ends of the tube mouth are sealed with silicone glue. This metal armored electric heating element can heat air, metal molds, and various liquids.
Metal tubular electric heater element (electric heating tube) is made by placing an electric heating element in a metal tube and tightly filling the gap with crystalline magnesium oxide powder with good heat resistance, thermal conductivity, and insulation properties, which is processed by other processes. It has the characteristics of simple structure, high mechanical strength, high thermal efficiency, safety and reliability, easy installation, and long service life. Widely applicable to various devices such as saltpeter tanks, water tanks, oil tanks, acid alkali tanks, melting furnaces for easily melted metals, air heating furnaces, drying furnaces, drying ovens, hot pressing molds, etc.
Electric heating tube is an electrical component specialized in converting electrical energy into thermal energy. Due to its low price, easy use, convenient installation, and no pollution, it is widely used in various heating occasions. Currently, there are many manufacturers producing electric heating elements, with a general design service life of more than 10000 hours. Far infrared radiation heating elements can have a service life of 5 heating seasons
2、 Classification of electric heating tubes
Oven heat sink electric heating tube
Sauna electric heating tube
Electric heating tube for water tank of rice steamer
Installation of tubular electric heating elements for electric boilers using fasteners
Pipe shaped electric heating elements for flange mounted electric boilers
Air electric heating tube
Liquid electric heating tube
Boiler electric heating tube
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3、 Calculation of heat generation of electric heating tube
A voltage regulator can be used to change the heat generation by adjusting the input voltage and current.
The heat generation is proportional to the square of the voltage and proportional to the square of the current.
When the voltage is reduced to half of its original value, the heat generated becomes 1/4
When the current becomes half of its original value, the heat generation also becomes one fourth
How to verify high-quality electric heating tubes
The most intuitive way to verify the quality of an electric heating tube is to first wipe the surface of the tube clean, then turn on an AC 220V power supply and dry burn it in air until the surface turns red. After the tube cools down, wipe it with a napkin. If there is no black oxide powder on the white paper (which has not reacted with oxygen in the air), it indicates that it is a high-quality electric heating tube.
Carbon fiber heating element is a competitive high-tech material in this century. Its emergence has sparked a new revolution in the field of electric heating, and replacing metal heating elements with carbon fiber heating elements will become an inevitable trend.
　　
1. Product Introduction
The heating element substrate of this product is made of imported materials, which have the advantages of large power margin, high temperature resistance, strong high heat capacity, long service life, and adjustable power. Carbon fiber quartz electric heating tube product, in compliance with GB/T2423.3-1993 electronic and electrical product standards
Hexagonal Nut Stainless Steel Electric Heating Tube Environmental Test Regulations, Test Ca: Constant Damp Heat Test Method and GB4706.1-1992 General Safety Requirements for Household and Similar Electrical Appliances.
2. Product performance characteristics
1. Stable electrical performance
After being powered on, the carbon fiber quartz electric heater maintains stable power within a certain tolerance range during frequent start-up, shutdown, and long-term continuous operation, without generating any instantaneous power shock.
2. High thermal efficiency, saving more than 30% energy compared to general metal heating elements, and extremely fast heating rate. Carbon fiber heating element is a pure blackbody material, which has the characteristics of rapid heating, small thermal hysteresis, uniform heating, long heat radiation transfer distance, and fast heat exchange speed. During the working process, the luminous flux of the electric heating tube is much lower than that of the metal heating element, and the electric heat conversion efficiency is over 95% (which means that when you use a 1000W ordinary electric heating tube, you only need 700W when using a carbon fiber electric heating tube).
4、 Precautions for using electric heating tubes:
1. The component is allowed to operate under the following conditions: A. The relative humidity of the air is not greater than 95%, and there are no explosive or corrosive gases. B. The working voltage should not exceed 1.1 times the rated value, and the casing should be effectively grounded. C. Insulation resistance ≥ 1M Ω, dielectric strength: 2KV/1min.
2. Electric heating tubes should be properly positioned and fixed, and the effective heating area must be completely immersed in liquid or metal solids. Empty burning is strictly prohibited. When scale or carbon deposits are found on the surface of the pipe body, they should be removed and reused in a timely manner to avoid affecting heat dissipation and shortening the service life.
3. When heating molten metals or solid nitrate, alkali, asphalt, paraffin, etc., the operating voltage should be reduced first, and only after the medium melts can it be raised to the rated voltage.
4. When heating air, the components should be arranged in a cross and even manner to provide good heat dissipation conditions, so that the air flowing through can be fully heated.
5. When heating nitrate, safety measures should be considered to prevent explosion accidents.
6. The wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media, and moisture; The lead wire should be able to withstand the temperature and heating load of the wiring part for a long time, and excessive force should be avoided when tightening the wiring screws.
7. The components should be stored in a dry place. If the insulation resistance is lower than 1M Ω due to long-term storage, they can be dried in an oven at around 200 ℃ or heated with reduced voltage until the insulation resistance is restored.
8. The magnesium oxide powder at the outlet of the electric heating tube should be protected from pollutants and moisture infiltration in the usage area to prevent leakage accidents.