The heating core of our premium electric radiant tube is ingeniously crafted with U-shaped, axially aligned, end-welded resistance wires harmoniously paired with ceramic support frames, ensuring unmatched heat dispersion due to the absence of a shielding layer between the inner core and the outer protective sleeve. Boasting a robust rated working temperature of 1000 degrees Celsius, the resistance wire material options include Cr20Ni80 or 0Cr21AI6Nb, achieving a surface working temperature soaring up to 1200 degrees. For those seeking even higher resilience, our electric radiation tube made from this superior material has a pinnacle working temperature of 1000 degrees, supported by high alumina ceramic parts. Its outer protective sleeve is a marvel of engineering: a cold drawn seamless thin-walled heat-resistant steel pipe, with options crafted from 1Cr25Ni20Si2 or 1Cr25Ni35Si2, ensuring excellent high-temperature oxidation resistance, superior high-temperature creep strength, and a notable resistance to carburizing. The design, characterized by a high safety factor, allows the rated working temperature to reach an impressive 1200 degrees with resistance wire material 0Cr27AI7Mo2, and the surface working temperature to touch a remarkable 1400 degrees. The ultimate short-term working temperature achieved is 1250 degrees, with support frames made of durable steel jade porcelain. The outer protective sleeve, constructed from a Fe Ni CrAI Re alloy, exhibits extraordinary oxidation resistance, supporting sustained operation at 1300 degrees Celsius in oxidizing atmospheres while offering temporary oxidation resistance up to 1360 degrees Celsius, making it ideal for high-temperature, low oxygen partial pressure environments containing SC.
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