Maximum operating temperature of nickel-chromium wire elements
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Maximum operating temperature of nickel-chromium wire elements
The surface temperature of the component itself in the dry air is normally about 100 degrees higher than the furnace temperature. Therefore, when designing the component, pay attention to its use temperature. When the use temperature exceeds a certain limit, the oxidation of the component itself will accelerate and heat resistance Decrease in performance, especially the iron-chromium-aluminum heating wire elements, the result is: easy to deform, collapse, and even break, and shorten the service life.
1. It is made of seamless cold-drawn heat-resistant steel pipes (the highest temperature is 1200 degrees) produced with high-quality raw materials;
2. The inner core adopts resistance wire U-shaped axial arrangement end welding method;
3. The resistance wire and the ceramic frame are basically unshielded, and the temperature difference between the resistance wire and the furnace is small;
4. The maximum working temperature is 1000 degrees or 1200 degrees;
5. The biggest advantage of the radiant tube produced by our company is the use of seamless cold-drawn, thin-walled heat-resistant steel pipe (1Cr25Ni20Si2 or 0Cr25Ni20Si2), and its heat radiation is 10% higher than similar products;
6. Use more than 8000h.
The electric heating radiant tube with a rated working temperature of 1200 degrees, the resistance wire material is 0Cr27Al7Mo2, the surface working temperature can reach 1400 degrees, the short-term maximum working temperature of the electric heating radiant tube with this material is 1250 degrees, and the support frame is made of steel jade porcelain. . The outer protective sleeve is a cold-drawn seamless thin-walled heat-resistant steel pipe made of Fe-Ni-Cr-Al-Re alloy. This material has ultra-high oxidation resistance. It can work for a long time at 1300 degrees in an oxidizing atmosphere and has a short-term resistance at 1360 degrees. Oxidation. Suitable for working in high temperature, low oxygen partial pressure and environment containing S and C.
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