Furnace gas erosion resistant electric radiant tube applied to strip steel heat treatment

CN222499242UActive Publication Date: 2025-02-18WISDRI WUHAN WIS IND FURNACE
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Patent Information

Application Number
CN202323379797.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-12
Publication Date
2025-02-18
Estimated Expiration
2033-12-12

AI Technical Summary

Technical Problem

The external sleeve of the existing strip steel heat-treated electric radiation pipe uses high alloy heat-resistant steel pipes, which has problems such as decreased high temperature strength, deformation damage, reduced efficiency and high cost, making it difficult to meet the requirements of the green industrial production concept.

Method used

Silicon carbide cylindrical tube is used as the outer sleeve, and the electric heating core is supported by ceramic insulating blocks, and air holes are installed at the opening of the outer sleeve to enter the atmosphere. The surface oxide layer of the electric heating alloy is protected by oxygen to extend the service life.

Benefits of technology

The silicon carbide outer sleeve maintains the high temperature strength stable at high temperatures, avoids deformation, and extends the service life; greatly reduces the temperature of the electric heating core, extends its service life, and reduces costs and maintenance costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222499242U_ABST
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Abstract

The electric radiant tube comprises an outer sleeve and an electric heating core, the electric heating core is sleeved with the outer sleeve, one end of the outer sleeve is closed, the other end of the outer sleeve is open, the electric heating core is supported in the outer sleeve through a ceramic insulation block, and a wiring terminal is arranged at one end of the electric heating core. The outer sleeve is a silicon carbide cylindrical tube, a sleeve connecting flange is arranged on the furnace wall at the open end of the outer sleeve, an electric radiant tube flange is arranged at the wiring end of the electric heating core, and the sleeve connecting flange and the electric radiant tube flange are connected and fastened through fastening screws. The service life of the electric radiant tube is prolonged, and the use and maintenance cost of the electric radiant tube is reduced.
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