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Computational Simulations on Melting Process of Fine Metal Powders With Laser Irradiation Welding

[+] Author Affiliations
Kazuyuki Takase

Japan Atomic Energy Agency, Tokai, Ibaraki, Japan

Toshiharu Muramatsu, Kazuyuki Tsukimori

Japan Atomic Energy Agency, Tsuruga, Fukui, Japan

Takahisa Shobu

Japan Atomic Energy Agency, Sayo, Hyogo, Japan

Paper No. IMECE2009-13219, pp. 739-740; 2 pages
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4382-6 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME


At the commercial use stage in sodium-cooled fast breeder reactors, securing maintenance and repair better than an equal to that of present water-cooled reactors is needed. Especially a repair technology that secures the plant integrity for long-term operation period becomes indispensable in the heat exchanger tubes of the steam generator that form the boundary of sodium and water coolants. Then the present study focused on the standardization of welding technology with a laser. An experimental study regarding the welding of a stainless steel plate with the laser using fine metal powders is being performed. Moreover, a numerical study is performed to simulate the welding of the fine metal powder on the stainless steel plate. The fine metal powder is made of iron, and is heated by the laser beam, and then melts exceeding the melting temperature. This paper reports the computational results of the welding phenomenon of some metal powders which changes from solid to liquid and liquid to solid. The results were compared with the experimental results qualitatively.

Copyright © 2009 by ASME



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