The advanced heating core of the electric heating radiant tube is ingeniously designed with U-shaped axially arranged end welded resistance wires and ceramic support frames, ensuring a seamless heat dissipation by eliminating any shielding between the inner core and outer protective sleeve. With a robust rated working temperature of 1000 degrees, this electric radiation tube features resistance wires made from Cr20Ni80 or 0Cr21AI6Nb, and can achieve a surface working temperature of up to 1200 degrees. Crafted with high alumina ceramic parts for support, the tube is encased in a cold drawn seamless thin-walled heat-resistant steel pipe, made from materials such as 1Cr25Ni20Si2 or 1Cr25Ni35Si2, known for their superior high-temperature oxidation resistance, high-temperature creep strength, and resistance to carburizing. The exceptional safety factor of this radiation tube’s design and material selection ensures reliability at a rated working temperature of 1200 degrees, with resistance wires made from 0Cr27AI7Mo2. It impressively reaches a surface working temperature of 1400 degrees, with a short-term maximum working temperature of 1250 degrees, using steel jade porcelain for support. Its protective sleeve, crafted from Fe Ni CrAI Re alloy, offers outstanding oxidation resistance, operating continuously at 1300 degrees Celsius in oxidizing environments and withstands short-term oxidation at 1360 degrees Celsius, making it ideal for high temperature, low oxygen, and SC containing settings.
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