Electroslag Welding Technology for Tube Sheets with 309 + 347 Cladding
Aiming at the core requirements of large-size tube sheets with a diameter of 2.4 m and 12 mm thick cladding, this technology combines the high-efficiency deposition and stable formation advantages of electroslag welding with the gradient matching characteristics of the 309 + 347 two-layer welding material system.
It specially solves industry pain points in the joining of large-size tube sheets, such as large alloy gradient, easy cracking, uneven formation in thick cladding, and insufficient corrosion resistance.
It is widely used in high-end fields including petrochemical engineering, nuclear power energy, and large pressure vessels, providing reliable welding assurance with high strength, high sealing performance, and excellent corrosion resistance for the connection of 2.4 m diameter tube sheets.
Based on the core electroslag welding process and targeting the difficulties of 2.4 m diameter and 12 mm thick cladding, this technology offers significant advantages:
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Large penetration depth and high deposition efficiency. Compared with conventional manual welding, the deposition efficiency is increased by more than 300%, enabling efficient large-area thick cladding on 2.4 m diameter tube sheets, greatly shortening the production cycle and avoiding deformation caused by long welding times on large tube sheets.
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Regular weld formation and high compactness, free from defects such as porosity, slag inclusions, and cracks.
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Perfect matching of welded joint strength with the tube sheet base material, ensuring structural integrity and sealing performance for 2.4 m large-size tube sheet connections and meeting the strength requirements of thick cladding.
