TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Development of technology for electron beam welding of impellers of centrifugal pumps for ships and offshore structures operated in the Arctic



Full text article ( in russian)

Year

 
2021

Issue

 
397

Volume

 
3

Pages

 
133-140

Caption

 
Development of technology for electron beam welding of impellers of centrifugal pumps for ships and offshore structures operated in the Arctic

Authors

 
Raskov V., Sharapov M., Blank E.

Keywords

 
impeller, electron-beam welding, centrifugal pumps.

DOI

 
10.24937/2542-2324-2021-3-397-133-140

Summary

 
Object and purpose of research. Centrifugal equipment is widely used in various sectors of industry. One of the main part of centrifugal equipment is the impeller. Application of impellers in shipbuilding is a promising field, in particular for fail-free operation in harsh Arctic environment. The purpose of this study is development of manufacturing processes for impellers involving electro-beam welding (EBW) without soldering alloys and final thermal treatment
Subject matter and methods.The main material chosen for the impeller is the high-strength cold-resistant steel 10ХН3МД.
Main results. In the process of technology development, the impeller design was chosen. Welding conditions were optimized on mock-up samples modeling the T-joint of cover plate with vane. Sample tests and investigation were done. Conclusions were made regarding the follow-on work and EBW introduction.
Conclusion. EBW technology for manufacturing of impellers was developed making it possible to fabricate impellers of high-strength cold resistant materials, including difficult-to-weld materials.

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