The electric heating radiant tube's heart is expertly crafted from U-shaped, axially positioned end-welded resistance wires supported by ceramic frames. With no shielding between the core and its protective sleeve, it ensures optimal heat dissipation. Designed to withstand up to 1000 degrees, the resistance wire is made from superior Cr20Ni80 or 0Cr21AI6Nb materials. The tube's exterior can handle temperatures soaring to 1200 degrees. For heightened performance, the tube crafted from this material reaches a peak of 1000 degrees, supported by high alumina ceramic components. The outer sleeve, a masterpiece of cold-drawn seamless thin-walled heat-resistant steel pipe, is forged from 1Cr25Ni20Si2 or 1Cr25Ni35Si2, boasting high-temperature oxidation resistance, impressive creep strength, and resilience against carburizing. This design guarantees a high safety factor, with wires made from 0Cr27AI7Mo2 reaching surface temperatures of 1400 degrees and short bursts up to 1250 degrees. The robust steel jade porcelain support frame and cold-drawn Fe Ni CrAI Re alloy sleeve enhance longevity and offer remarkable oxidation resistance, enabling continuous operation at 1300 degrees Celsius and short-term endurance at 1360 degrees Celsius, even in challenging environments with high temperatures, low oxygen levels, and SC presence.
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