오비탈 TIG 용접시스템을 이용한 시험핵연료봉 봉단마개 용접기술 개발

다국어 초록 (Multilingual Abstract)

To precisely assemble the fuel test rod, an orbital TIG welding system was designed and developed to accurately conduct orbital TIG welding for the nuclear fuel test rod. Using this system, a welding process needs to confirm the welding properties for orbital TIG welding. Therefore, preliminary weld tests were performed on the cladding tubes under various conditions, and the results show that the width and depth of HAZ of the cladding specimen welded using identical power during an orbital TIG welding cycle was continuously increased from a welded start-point to a welded end-point because of heat accumulation. The performance tests were conducted under the welding conditions considered through preliminary welding tests, and the properties of the specimens were conformed through surface and microstructure analyses.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 오비탈 TIG 용접시스템
• 2.1 TIG 용접 장치
• 2.2 용접챔버
• 2.3 용접방법
• 3. 용접 시험
• 3.1 시험핵연료봉의 구조
• 3.2 용접 재료
• 3.3 용접 조건
• 3.4 특성 분석
• 4. 실험결과 및 고찰
• 4.1 전류량과 퍼지가스 유속의 영향
• 4.2 용접초기에서 챔버 압력의 영향
• 4.3 용접 스케줄 설정 따른 영향
• 5. 결론
• 후기
• References

참고문헌 (Reference)

1 김가혜, "파이버 레이저 용접 공정을 이용한 stainless와 zircaloy-4의 용접특성 비교" 한국기계기술학회 16 (16): 1727-1732, 2014

2 정창용, "시험핵연료봉 헬륨가스 충진을 위한 TIG 점용접 장치 개발" 한국기계기술학회 16 (16): 2135-2141, 2014

3 정창용, "시험핵연료봉 헬륨가스 충진 시스템 개발" 대한설비관리학회 18 (18): 67-75, 2013

4 B. G Kim, "Review of Instrumentation for Irradiation Testing of Nuclear Fuels and Materials" 176 : 155-187, 2011

5 J. M. Sohn, "Fabrication report on the instrumented fuel rods for the 3-Pin Fuel Test Loop at HANARO" 2008

6 C. Y. Joung, "Development of TIG Welding System for a Nuclear Fuel Test Rig" 2013

7 S. W. Nam, "A study on the high temperature strength in 304NG and 316NG stainless steel" 2001

8 J. W. Lee, "A Review on the Welding Technology for the Sealing of Irradiation Test Fuel Element" 2000