The principle of stainless steel heating tube heating in equipment
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The principle of stainless steel heating tube heating in equipment
The stainless steel heating tube is made of a high temperature resistant stainless steel seamless tube with high temperature electric furnace wires uniformly distributed in the tube, and the gap is densely filled with crystalline magnesium oxide powder with good thermal conductivity and insulation performance. This structure is not only advanced, but also has high thermal efficiency. Moreover, the heating is uniform. When the current passes through the high-temperature resistance wire, the heat generated is diffused to the surface of the metal pipe through the crystalline magnesium oxide powder, and then transferred to the heated part or the air to achieve the purpose of heating.
In the electric heating radiant tube with a rated working temperature of 1000 degrees, the resistance wire is made of Cr20Ni80 or 0Cr21Al6Nb, and the surface working temperature can reach 1200 degrees. The maximum working temperature of the electric heating radiant tube with this material can reach 1000 degrees, and the support frame is high aluminum Ceramic pieces. The outer protective sleeve is a cold-drawn seamless thin-walled heat-resistant steel pipe made of 1Cr25Ni20Si2 or 1Cr25Ni35Si2. The material has good high-temperature oxidation resistance, high-temperature creep strength, and certain anti-carburization performance. The design and material selection safety factor of the radiant tube Larger.
According to the strength of acid and alkali, we generally choose the order of materials: stainless steel 304 heating tube, stainless steel 316 heating tube, Teflon heating tube, titanium heating tube. Prices have also increased sequentially. The selection of the jacket material of the heating tube will affect the performance of the heating tube in different environments, and the electric heating element is better than other metal heating types. In the selection process, customers need to select the most suitable heating element according to actual needs.
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