Journal of the Korean Society for Nondestructive Testing (비파괴검사학회지)

The Korean Society for Nondestructive Testing (한국비파괴검사학회)
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A Study on the Optimal Conditions of friction Welding for JLF & STS304 Using AE Technique

AE기법을 이용한 JLF/STS304이종재료의 최적 마찰용접조건에 관한 연구

  • Yoon, Han-Ki (School of Mechanical and Industrial System Engineering, Dong-Eui University) ;
  • Lee, Sang-Pill (School of Mechanical and Industrial System Engineering, Dong-Eui University) ;
  • Kong, Yu-Sik ;
  • Lee, Jin-Kyung (School of Mechanical and Industrial System Engineering, Dong-eui University)
  • 윤한기 (동의대학교 기계산업시스템공학부) ;
  • 이상필 (동의대학교 기계산업시스템공학부) ;
  • 공유식 (동의대학교 산업기술개발연구소) ;
  • 이진경 (동의대학교 기계산업시스템공학부)
  • Published : 2003.04.30
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Abstract

Japanese low activation terrific steel(JLF) is a good material for the parts of heat exchanger such as blanket and diverter. At first, JLF was developed as a candidate for structural materials in nuclear fusion applications. However, the development of the jointing technique of JLF steel to other materials is important for wide applications of this material to the industry fields. Recently the jointing technologies including diffusion bonding, brazing, roll bonding, explosive bonding and hot iso-static pressing have been studied for the heterogeneous materials of JLF-1 steel(Fe-9Cr-2W-V-Ta) and stainless steel(STS304). Friction welding is one of the most popular welding methods for two different kinds of materials. In this paper, the JLF-1 steel was jointed to SIS304 by friction welding method and the optimal conditions of the friction welding discussed. Acoustic emission was used as a nondestructive technique to evaluate the weld quality in processing.

저방사화 페라이트강인 JLF는 핵융합로의 블랑켓과 같은 열교환기의 재료로써 유용한 재료이다. 이 재료의 광범위한 적용을 위해서는 JLF강과 다른 재료와의 접합기술의 개발이 중요하다. 최근 두 이종재료간의 접합에는 마찰용접이 많이 이용되고 있으며 본 연구에서도 JLF강과 STS304 간의 마찰용접에 의한 용접특성을 평가하였으며 특히 비파괴기법중의 하나인 음향방출 기법을 이용하여 두 이종재료간의 용접특성 및 최적의 용접조건을 평가하였다. 음향방출 파라미터중의 하나인 카운트와 사상수 등이 최적용접조건 및 용접품질을 평가하는데 유효한 파라미터들이었다.

Keywords

References

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