The heating core of the electric heating radiant tube features U-shaped axially arranged end welded resistance wires, supported by ceramic frames. With no barrier between the core and the outer protective sleeve, it ensures excellent heat dissipation. The electric radiation tube's rated working temperature is 1000 degrees, employing resistance wire materials such as Cr20Ni80 or 0Cr21AI6Nb, with surface temperatures reaching up to 1200 degrees. Constructed from high alumina ceramic parts, the support frame underpins the integrity of the structure. The outer sleeve comprises a cold-drawn seamless thin-walled heat-resistant steel pipe made from 1Cr25Ni20Si2 or 1Cr25Ni35Si2, offering superior high-temperature oxidation resistance, creep strength, and carburizing resistance. Designed with a high safety factor, these materials ensure the tube's rated working temperature of 1200 degrees, with the resistance wire made of 0Cr27AI7Mo2, achieving surface temperatures as high as 1400 degrees. For short-term operations, the tube withstands up to 1250 degrees, supported by steel jade porcelain frames. The protective sleeve, crafted from Fe Ni CrAI Re alloy, delivers exceptional oxidation resistance, allowing operation at 1300 degrees Celsius in oxidizing environments and short-term resilience at 1360 degrees Celsius, making it ideal for high-temperature, low oxygen partial pressure, and SC-rich scenarios.
){kind=link}