• 제목/요약/키워드: Arc Air Gouging

검색결과 1건 처리시간 0.011초

가우징 높이에 따른 구조물의 열영향 평가 (Evaluation of the heat affection according to the gouging height for low alloy steel structures)

  • 하준욱;양병일;박성진;이기학
    • 대한기계학회:학술대회논문집
    • /
    • 대한기계학회 2001년도 춘계학술대회논문집A
    • /
    • pp.477-482
    • /
    • 2001
  • A study was performed to determine the optimum height for an arc air gouging of temporary attachments, which were attached at the pressure vessel made of low alloy steel. Frequently, the crack occurred in the base metal by the excessive heat input during an arc air gouging process to remove the temporary attachments. A numerical analysis by 2-dimensional finite element method was performed to calculate the temperature distribution in the base metal during the removal of temporary attachments. And then the mock-up test was performed to verify the numerical results. Numerical values showed good agreement with the experimental results. These results indicated that the defects due to the excessive heat input during an arc air gouging were dependent on the height of temporary attachments remained above hie main products.

  • PDF