The heart and soul of our Innovative Ceramic Bobbin Electric Heater for Furnace lies in its sophisticated heating core. Crafted with precision, it features U-shaped axially arranged end welded resistance wires, seamlessly integrated with robust ceramic support frames. Unencumbered by shielding between the inner core and outer protective sleeve, this design ensures exceptional heat dissipation. Rated for an impressive working temperature of 1000 degrees Celsius, the resistance wire options include Cr20Ni80 or 0Cr21AI6Nb, boasting surface working temperatures soaring to 1200 degrees. For heightened thermal demands, the electric radiation tube crafted from this material can also achieve a peak operating temperature of 1000 degrees. The support frame, composed of high alumina ceramic parts, complements a cold drawn seamless thin-walled heat-resistant steel pipe, made of 1Cr25Ni20Si2 or 1Cr25Ni35Si2. This material is renowned for its outstanding high-temperature oxidation resistance, superior high-temperature creep strength, and admirable resistance to carburizing. Our design and material selection deliver a product with a commendable safety factor. Further elevating its capabilities, the electric radiation tube's rated working temperature reaches a remarkable 1200 degrees, with the resistance wire 0Cr27AI7Mo2 facilitating surface working temperatures up to 1400 degrees. Its maximum short-term working temperature peaks at 1250 degrees, with support frames crafted from steel jade porcelain. The outer protective sleeve, made from a Fe Ni CrAI Re alloy, endures long-duration operation at 1300 degrees Celsius in oxidizing atmospheres, exhibiting short-term oxidation resistance at 1360 degrees. This makes it ideally suited for high-temperature, low oxygen partial pressure, and SC-containing environments.
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