The electric heating radiant tube boasts an advanced heating core, ingeniously crafted with U-shaped, axially aligned end welded resistance wires supported by robust ceramic frames. This innovative design ensures that the core remains unshielded from the outer protective sleeve, optimizing heat dissipation for superior performance. With a rated working temperature of up to 1000 degrees, the resistance wire is expertly fashioned from either Cr20Ni80 or 0Cr21AI6Nb materials. Remarkably, the surface operation temperature can ascend to an impressive 1200 degrees, while the maximum working temperature for the tube can peak at 1000 degrees. High alumina ceramic components fortify the support frame, enhancing durability. The outer protective sleeve is a marvel of engineering, made from cold drawn seamless thin-walled heat-resistant steel pipe, available in 1Cr25Ni20Si2 or 1Cr25Ni35Si2. This choice of material endows the tube with exceptional high-temperature oxidation resistance, high creep strength, and a commendable resistance to carburizing. The design and material selection are calculated to provide a reassuringly high safety factor. In variants where the rated temperature reaches 1200 degrees, resistance wires are made from 0Cr27AI7Mo2, allowing surface temperatures to soar to 1400 degrees. These tubes can achieve a maximum short-term working temperature of 1250 degrees, supported by steel jade porcelain frames. The outer sleeve, crafted from high oxidation resistant Fe Ni CrAI Re alloy, ensures reliability even at 1300 degrees Celsius in oxidizing conditions and short-term resilience at 1360 degrees Celsius. Ideal for challenging environments, this radiant tube is built to excel in high temperature, low oxygen partial pressures, and sulfur-containing scenarios.
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