대한용접접합학회:학술대회논문집 (Proceedings of the KWS Conference)

대한용접접합학회 (The Korean Welding and Joining Society)
권호 표지

1.25Cr-0.5Mo 강에서의 Electro Slag Strip 육성 용접부 특성

Characteristics of Electro Slag Strip overlaied weldments on the 1.25Cr-0.5Mo Steel

  • 성희준 (현대중공업 산업기술연구소) ;
  • 주명수 (현대중공업 산업기술연구소) ;
  • 주정권 (현대중공업 산업기술연구소) ;
  • 김영일 (현대중공업 산업기술연구소)
  • 발행 : 2005.11.17
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초록

In order to evaluate disbonding properties caused by hydrogen on the Electro Slag Strip Welding for 1.25Cr-0.5Mo steel, two kinds of welding consumables were selected and tested under the disbonding condition of $97.2kgf/cm^{2}$ at $425^{\circ}C$. Chemical composition of the welds showed that they have similar chemical compositions. The microsturucture investigation, however, indicated that 'A' weld has high ratio of coarse grain area, while B weld has low. Disbonding results showed that high ratio coarse grain welds showed unacceptable, while low ratio coarse grain welds showed acceptable.

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