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직접분사 적층제조 공정을 이용한 탈황 내마모 펌프부품의 보수재생 연구
김성욱(Sungwook Kim),임성록(Sunglock Lim),천창근(Chang-Keun Chun) 대한용접·접합학회 2020 대한용접·접합학회지 Vol.38 No.1
Numerous pump systems are applied to industries including power plants; among these, desulfurization transfer pumps are severely eroded by slurry, and require periodic replacement of internal impeller and wear plate parts. When directed energy deposition(DED) in the additive manufacturing process is used to repair parts, it is possible to repair entire parts or sections of them. If there is no discontinuity or inventory of parts, this process is expected to be utilized often in the future. In this study, a deposition test and physical property evaluation were carried out using the DED process to repair wear resistance pump parts for desulfurization transfer. Although it is necessary to develop alloys with excellent deposition conditions and compositions similar to those of the base material, this study conducted experiments on commercially available alloy materials. As a result of evaluating various materials, it was found that a powder composed of an iron-based system had characteristics similar to those of the material to be repaired.