Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Effect of root gaps on toughness of FCAW weld metal

FCAW 용접부의 인성에 미치는 Root Gap의 영향

  • 한종만 (대우조선공업㈜ 기술연구소) ;
  • 이은배 (대우조선공업㈜ 기술연구소) ;
  • 안성철 (대우조선공업㈜ 기술연구소) ;
  • 한용섭 (대우조선공업㈜ 기술연구소)
  • Published : 1991.12.01
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Abstract

Both impact and fracture toughnesses were investigated with root gaps in FCAW weld metals at room temperature and 0.deg.C. The maximum impact value was obtained at the root gap of 16mm for 1G position weld metal, and the impact value of 3G position weld metals also showed the maximum impact value at the root gap of 12mm. However, the fracture toughnes(CTOD)values tend to decrease with increasing root gaps at both temperatures in 1G weld metal. Bending test also showed satisfactory results with all of root gaps investigated. Based on this result, it becomes possible to apply wide root gaps in real projects in both aspects of toughness and bending resistance.

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