The heating core of our cutting-edge electric heating radiant tube is meticulously crafted with U-shaped, axially aligned, end-welded resistance wires supported by ceramic frames. This innovative design ensures excellent heat dissipation as there is no shielding between the inner core and the outer protective sleeve. Engineered for high performance, the rated working temperature of this electric radiant tube reaches an impressive 1000 degrees Celsius. The resistance wires, composed of Cr20Ni80 or 0Cr21AI6Nb, allow the surface temperature to reach up to 1200 degrees. Constructed from high alumina ceramic, the support frame enhances durability. Encased in a cold-drawn, seamless, thin-walled heat-resistant steel pipe made from 1Cr25Ni20Si2 or 1Cr25Ni35Si2, the outer sleeve offers remarkable high-temperature oxidation resistance, superior creep strength, and carburizing resistance. With a high safety factor, this design reflects meticulous material selection. For even more demanding applications, the rated working temperature can soar to 1200 degrees with resistance wires of 0Cr27AI7Mo2, allowing surface temperatures up to 1400 degrees. Short-term operation is possible at 1250 degrees, with support frames made of steel jade porcelain, and the protective sleeve crafted from Fe Ni CrAI Re alloy. This material withstands long-term exposure at 1300 degrees in oxidative atmospheres and short-term resistance at 1360 degrees, making it ideal for high temperature, low oxygen partial pressure, and sulfur-containing environments.
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