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NTIS 바로가기大韓溶接·接合學會誌 = Journal of the Korean Welding and Joining Society, v.31 no.1, 2013년, pp.11 - 20
유호천 (한국과학기술정보연구원 ReSEAT 프로그램)
Recent developing tendency of overlay welding on welding methods are studied by searching of NDSL, ScienceDirect and KIPRIS. PTA, Laser cladding, SMAW, GTAW, GMAW, SAW and ESW are selected as welding methods. Development and improvement of various new overlay welding processes and technology are int...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
현재 국내 오버레이용접기술은 어디에 이용되는가? | 현재 국내 오버레이용접기술은 발전설비, 제철설비, 광산기계, 토목건설기계, 시멘트설비, 석유화학설비, 제지설비, 금속소성 가공기계 등 전반적인 산업분야에 표면경화와 보수에 널리 이용되고 있으나 대부분의 국내 관련 중소기업체에서는 오버레이용접에 대한 제조비용의 과중과 경쟁력의 심화로, 상당한 어려움을 겪고 있다. 이러한 어려운 국내외 상황을 탈피하고 국제적인 경쟁력을 갖추기 위해서는 국내외 최신 오버레이 용접기술을 분석하고 지속적으로 발전시켜 나가야 한다. | |
PTA기술로 Ni계 하드페이싱 합금을 적용할 때 고려해야 할 사항은? | Fernandes 등4)은 PTA기술로 Ni계 하드페이싱 합금을 적용하였다. 이 경우 아크전류의 증가는 주철의 희석량을 증가시키고 입계에 석출물의 양과 탄소박편(C-flake)을 증가시켜 조직을 미세화시키지만 경도를 감소시켜 내마모성을 저하시키므로 최적의 전류선정이 중요하다. | |
용접방법에는 무엇이 있는가? | 이를 위해 NDSL, ScienceDirect 및 KIPRIS의 검색을 통하여, 국내외 오버레이 용접관련 학술지와 특허자료를 입수하여 오버레이 용접기술 동향을 체계적으로 분석하였다. 그리고 용접방법(PTA, 레이저 클래딩 용접, SMAW, GTAW, GMAW, SAW, ESW)에 따른 해외 및 국내의 오버레이 용접의 기술개발 동향을 파악하고 정성분석하였으며 향후 기술전망을 제시하였다. |
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