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http://dx.doi.org/10.7736/KSPE.2016.33.11.951

Preliminary Study on Improvement of Surface Characteristics of Stellite21 Deposited Layer by Powder Feeding Type of Direct Energy Deposition Process Using Plasma Electron Beam  

Kim, Dong-In (Department of Mechanical Engineering, Chosun University)
Lee, Ho-Jin (Department of Mechanical Engineering, Chosun University)
Ahn, Dong-Gyu (Department of Mechanical Engineering, Chosun University)
Kim, Jin-Seok (IT Convergence Process R&D Group, Korea Institute of Industrial Technology)
Kang, Eun Goo (IT Convergence Process R&D Group, Korea Institute of Industrial Technology)
Publication Information
Journal of the Korean Society for Precision Engineering / v.33, no.11, 2016 , pp. 951-959 More about this Journal
Abstract
The aim of this paper is to investigate the improvement of surface characteristics of Stellite21 deposited layer by powder feeding type of direct energy deposition (DED) process using a plasma electron beam. Re-melting experiments of the deposited specimen is performed using a three-dimensional finishing system with a plasma electron beam. The acceleration voltage and the travel speed of the electron beam are chosen as process parameters. The effects of the process parameters on the surface roughness and the hardness of the re-melted region are examined. The formation of the re-melted region is observed using an optical microscope. Results of these experiments revealed that the re-melting process using a plasma electron beam can greatly improve the surface qualities of the Stellite21 deposited layer by the DED process.
Keywords
Plasma electron beam; Surface characteristics; Power feeding type; Direct energy deposition process;
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Times Cited By KSCI : 3  (Citation Analysis)
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