Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)

The Korean Welding and Joining Society (대한용접접합학회)
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Fatigue Properties of the Small Diameter Branch Welded Pipe Joint with variation of Welding Procedures and Welding Shapes.

용접공정 및 용접형상 변화에 따른 소구경 분기배관 용접부의 피로특성

  • 백종현 (한국가스공사 연구개발원 배관연구센터) ;
  • 김철만 (한국가스공사 연구개발원 배관연구센터) ;
  • 김우식 (한국가스공사 연구개발원 배관연구센터)
  • Published : 2003.11.01
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Abstract

S-N fatigue tests were conducted to investigate the fatigue strength of the small diameter socket and butt welded joints of carbon steels. Experimental parameters were pipe diameter, throat depth, shape of socket welds and welding procedure. Filler metals used in SMAW and GTAW procedure were E9016-G with diameter of 4.0 mm and ER70S-G with diameter of 2.4 m. API 5L Gr.B pipes were adopted as a small diameter branch pipes. All socket fittings were machined from ASTM A105 carbon steel. Fatigue strength in socket weld joints increased with increasing pipe diameter, area of weld metal and weld leg length of pipe side.

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