Advanced ultra super critical power plants: role of buttering layer

Rathore, Saurabh; Kumar, Amit; Sirohi, Sachin; Pandey, Shailesh M.; Gupta, Ankur; Fydrych, Dariusz; Pandey, Chandan

doi:10.1007/s00170-024-14469-9

Int J Adv Manuf Technol

2024

DOI: 10.1007/s00170-024-14469-9

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Advanced ultra super critical power plants: role of buttering layer

Saurabh Rathore,

Amit Kumar,

Sachin Sirohi

et al.

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Enhancing Welding Productivity and Mitigation of Distortion in Dissimilar Welding of Ferritic-Martensitic Steel and Austenitic Stainless Steel Using Robotic A-TIG Welding Process

Sonar,

Ivanov,

Shcherbakov

et al. 2024

JMMP

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The P91 martensitic steel and 304L austenitic stainless steels are two mainly used structural steels in power plants. The major problem in conventional multipass tungsten inert gas (TIG) welding of P91/304L steel is high heat input and joint distortion, increased cost and time associated with V groove preparation, filler rod requirement, preheating and welding in multiple passes, and labor efforts. Hence, in this study, a novel approach of robotically operated activated flux TIG (A-TIG) welding process and thin AlCoCrFeNi2.1 eutectic high entropy alloy (EHEA) sheet as the interlayer was used to weld 6.14 mm thick P91 and 304L steel plates with 02 passes in butt joint configuration. The joints were qualified using visual examination, macro-etching, X-ray radiography testing and angular distortion measurement. The angular distortion of the joints was measured using a coordinate measuring machine (CMM) integrated with Samiso 7.5 software. The quality of the A-TIG welded joints was compared to the joints made employing multipass-TIG welding process and Inconel 82 filler rod in 07 passes. The A-TIG welded joints showed significant reduction in angular distortion and higher productivity. It showed a 55% reduction in angular distortion and 80% reduction in welding cost and time compared to the multipass-TIG welded joints.

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Enhancing Welding Productivity and Mitigation of Distortion in Dissimilar Welding of Ferritic-Martensitic Steel and Austenitic Stainless Steel Using Robotic A-TIG Welding Process

Sonar,

Ivanov,

Shcherbakov

et al. 2024

JMMP

View full text Add to dashboard Cite

show abstract

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Advanced ultra super critical power plants: role of buttering layer

Cited by 1 publication

References 153 publications

Enhancing Welding Productivity and Mitigation of Distortion in Dissimilar Welding of Ferritic-Martensitic Steel and Austenitic Stainless Steel Using Robotic A-TIG Welding Process

Enhancing Welding Productivity and Mitigation of Distortion in Dissimilar Welding of Ferritic-Martensitic Steel and Austenitic Stainless Steel Using Robotic A-TIG Welding Process

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