Analysis of Welding Technology about Bimetallic Clad Pipelines

Abstract:

Butt girth welding was a knotty problem for future application of bimetallic clad pipelines. At present, there were two kinds of problems: 1) To decide whether to use a variety of alloy welding procedure or to use corrosion resistant alloy full welding procedure; 2) After selecting the procedure, what kind of welding material should be equipped. In view of the above problems, taking 316L SS or 2205 DSS clad pipe as an example, welding process design and experimental analysis were conduted in this paper. Analysis of welding process from theory, standard and practice pointed out the control of welding hardness under different welding materials and procedure and directional suggestions of welding for bimetallic clad pipelines were provided. Futher the hardness distribution and CVN absorbed Energy test results of different welding processes showed welding quality could be guaranteed only when ENiCrMo-3 welding material was chosen for the whole weld.

• Periodical: Key Engineering Materials (Volume 905)
• Pages: 9-13
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.905.9
• Online since: January 2022
• Authors: Fu Shan Wang, Fa Gen Li*, Ya Jun Li, Xue Qiang Mao, Bai Chun Liu, Gu Hong
• Keywords: Bimetallic Clad Pipelines, Hardness Control, Welding Materials Selection, Welding Procedure

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