Features of box-type resistance furnace nickel-chromium electric wire:

Features of box-type resistance furnace nickel-chromium electric wire:

1. High strength under high temperature;
2. Cool down after long-term use, the material will not become brittle;
3. The emissivity of fully oxidized Ni-ming alloy is higher than that of Fe-Cr-Al alloy;
4. Non-magnetic;
5. In addition to sulfur atmosphere, it has better corrosion resistance.

Alloy electric furnace wire is the most widely used and the largest heating material. Its disadvantage is that it is at a very high temperature (hot state) in the working state, and it is prone to oxidation reaction and burn out in the air; from the perspective of electrothermal energy conversion, the energy is lost due to the generation of visible light; the electric furnace wire is often When used in a spiral state, an inductive reactance effect will be generated when power is applied.

Feature of iron-chromium-aluminum electric heating alloy material for box-type resistance furnace:

1. The use temperature is high. For example, the maximum use temperature of HRE iron-chromium-aluminum alloy wire in the atmosphere can reach 1400°C, that is, the maximum temperature of the box-type resistance furnace can reach 1400 degrees. If you need to design a box-type resistance furnace that exceeds this temperature, You need to choose other electric stove wires;
2. Long service life;
3. The allowable surface load is large;
4. Good oxidation resistance. The AI2O3 film formed after oxidation has good chemical resistance and high resistivity, with a specific gravity less than nickel-chromium alloy and high resistivity;
5. Good sulfur resistance; 　
6. The price is significantly lower than that of nickel-chromium alloy;
7. The disadvantage is that as the temperature increases, the performance is plastic, and the strength at high temperatures is low.

The advantages of Swedish Kanthal heating wire:

1. The energy conversion efficiency of KANTHAL heating wire is higher than domestic heating wire. The maximum temperature is 1425℃2600 F, which is higher than the nickel-chromium alloy 1250℃2280 F.
2. KANTHAL heating wire and domestic heating wire are used under the same specifications. The service life of imported heating wire is 4-8 times that of domestic wire.
3. KANTHAL heating wire has a high surface load.
4. KANTHAL heating wire has high resistivity.
5. Kanthal KANTHAL heating wire has lower density, saving material cost.
6. Oxide debris will not be produced. Oxides can contaminate goods and electric furnaces, and may cause short circuit or failure of electric heating elements and gas burners. For the use of electric furnaces, the use of NIKROTHAL (NIKROTHAL) results in lower operating costs, less material consumption, and longer life.

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