Classification and quality identification methods for electric heating wires

The classification of electric heating wires is based on their different chemical element content and organizational structure. Electric heating wires are divided into two types: iron chromium aluminum alloy electric heating wires and nickel chromium alloy electric heating wires. These two types of electric heating wires, as heating elements, have different functional characteristics.
1. Iron chromium aluminum alloy heating wire
Advantages: High operating temperature, with a maximum operating temperature of up to 1400 ℃. Iron chromium aluminum alloy heating wires have long service life, high resistivity, high surface load, and good oxidation resistance.
Disadvantages: In high-temperature environments, the strength is relatively low, and as the temperature increases, the plasticity of iron chromium aluminum alloy heating wires will increase. This means that iron chromium aluminum alloy heating wires are prone to deformation at high temperatures and are not easy to repair after deformation.
2. Nickel chromium alloy heating wire
Advantages: High strength in high-temperature environments, resistant to deformation and structural changes during long-term high-temperature operation, and good room temperature plasticity of nickel chromium alloy heating wires, making repair after deformation relatively simple. In addition, the nickel chromium alloy heating wire has high radiance, no magnetism, good corrosion resistance and long service life.
Disadvantages: The manufacturing of nickel chromium alloy heating wires requires the use of nickel, which is more expensive than iron, chromium, and aluminum. Therefore, the manufacturing cost of nickel chromium alloy heating wires is higher, which is not conducive to cost control
Quality identification method for electric heating wire:
Firstly, it is important to know that the electric heating wire reaches a red hot state, which is related to the structure of the electric heating wire. Cut a section of electric heating wire and use an 8V 1A transformer. The resistance value of the electric heating wire or electric heating blanket should not be less than 8 ohms, otherwise the transformer may burn easily. Using a 12V 0.5A transformer, the resistance value of the heating wire should not be less than 12 ohms, otherwise the transformer may also be easily burned out. If the electric heating wire reaches a red hot state, the redder the better, an 8V 1A transformer should be used, which has a higher power than a 12V 0.5A transformer. This way, we can better test the advantages and disadvantages of the electric heating wire.
The above content is the classification and quality identification methods of electric heating wires that I have brought to you today. I hope it will be useful to you. At present, electric heating wires have become an important heating element for electric heating equipment, occupying an important position in the national economy, and are widely used in industries such as medical, chemical, electronic, electrical, metallurgical machinery, ceramic and glass processing.

The above content is organized by Superb heater Company, super heater. Mainly professional production: industrial heating elements, temperature measuring elements, production equipment, accessories, and raw materials such as tubular heaters, tubular heaters, belt heaters, ceramic heaters, silicone rubber heaters, thermocouples, etc.

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