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자동차용 고강도강의 마찰교반접합특성에 미치는 접합 변수의 영향 Effect of welding parameter on friction stir-weldability of high-strength automotive steel

김영곤, 김인주
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한국기계기술학회지 (韓國機械技術學會誌)
제17권 제2호 (2015.04)
pp.267-272
한국기계기술학회 (Korean Society of Mechanical Technology)
초록

In this study, the cold rolled DP590 FSW joints were obtained by the position control type of the FSW machine and examined. The FSW weldability was investigated using the Si3N4 tool specially made by Cold Isostatic Press (CIP). Defect-free joints were formed at 180-300 mm/min at 800 rpm. However, a groove-like defect was observed along the joint line of the advancing side due to the insufficient material flow. In addition, the life of the Si3N4 tool was compared to that of the polycrystalline cubic boron nitride (PCBN) tool for the durability. The SI3N4 tool that was broken in which tool reached a length of 5 m and around half of the performance level of the PCBN tool.

키워드
Dual phase steelDP강Friction stir weldingFSW: 마찰교반접합Position control위치 제어welding parameter접합 변수Tool life기구 수명
목차
1. 서 론
 2. 실험 방법
  2.1 실험 재료
  2.2 접합 장비 및 조건
 3. 실험 결과 및 고찰
  3.1 접합부 품질과 입열량과의 관계
  3.2 적정접합조건범위의 설정
  3.3 용접부 경도 및 미세조직관찰
  3.4 기구 내구성 평가
 4. 결 론
 References
저자
  • 김영곤(Member, Korea Institute of Industrial Technology) | Young- Gon K im Corresponding author
  • 김인주(Korea Institute of Industrial Technology) | In- Ju K im