What is the surface temperature of an 800W single head heating tube?

What is the surface temperature of an 800W single head heating tube?

According to the calculation formula of surface load:

Power W/[Pipe diameter (cm) * 3.14 * L (cm)]

What is the surface temperature of the heating tube in a stationary air medium

When the surface load reaches 1W/cm2, the surface temperature of the heating tube can reach 300 degrees;

When the surface load reaches 2W/cm2, the surface temperature of the heating tube can reach 420 degrees;

When the surface load reaches 3W/cm2, the surface temperature of the heating tube can reach 500 degrees;

When the surface load reaches 4W/cm2, the surface temperature of the heating tube can reach 580 degrees;

When the surface load reaches 5W/cm2, the surface temperature of the heating tube can reach 630 degrees;

When the surface load reaches 6W/cm2, the surface temperature of the heating tube can reach 680 degrees;

Question 2: How much temperature can an 800W single head heating tube heat up the object being heated to?

This is an unsolved problem because the heat loss during the heat conduction process cannot be calculated. Therefore, the temperature to which an 800W single head heating tube can heat the object can only be determined through experiments.

Kiln electric heating wires can be divided into nickel chromium electric heating wires and iron chromium aluminum electric heating wires (also domestic and imported) based on their materials. The temperature of iron chromium aluminum electric heating wires is much higher than that of nickel chromium electric heating wires.

(1) Composition of Iron Chromium Aluminum Electrothermal Alloy Wire:

1. Iron chromium aluminum electric heating wire is used at high temperatures in the atmosphere

The maximum operating temperature of iron chromium aluminum electric heating wire 0Cr27AL7Mo2 can reach 1400 ℃, while the maximum operating temperature of nickel chromium wire Cr20Ni80 is 1200 ℃.

2. Long service life

Under the same usage at higher temperatures in the atmosphere, the lifespan of iron chromium aluminum can be 2-4 times that of nickel chromium.

3. High surface load

Due to the high temperature and long service life of iron chromium aluminum alloy, the surface load of the components can also be higher, which not only allows for faster heating but also saves alloy materials.

4. Good antioxidant performance

The Al2O3 oxide film formed on the surface of iron chromium aluminum alloy has a dense structure, good adhesion performance with the substrate, and is not easy to disperse and cause pollution due to flowing water. In addition, the high electrical resistivity and melting point of Al2O3 determine that the Al2O3 oxide film has excellent oxidation resistance. The anti carburizing performance is also better than the Cr2O3 generated on the surface of nickel chromium alloy.

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