KOREASCHOLAR

The relationship between the addition of metallic additives and the geometry of gas metal arc weld deposit were studied by using Φ1.6mm flux-cored wire designed for hypo-eutectic Fe-Cr-C-Si hardfacing. It was found that the addition of metallic additives, such as Mn, Ti, Al and Si, by less than 0.5wt.% of the overall wire weight affected the dilution of weld deposit by changing the metal transfer mode during welding. The lowest dilution for each additives could be obtained at the transition point between spray and short circuit modes. The bead width was considered to be affected by the increase of arc length due to the oxidizing effect and by the molten pool flow behavior due to the Marangoni effect. Among additives, Mn and Al are considered to be effective in increasing bead width by decreasing the sulfur level and by inducing Marangoni flow directly at the molten pool, respectively.

Abstract
 1. 서론
 2. 실험방법
 3. 결과 및 고찰
  3.1 Mn 첨가효과
  3.2 Ti 첨가 효과
  3.3 Al 첨가영향
  3.4 Si 첨가 효과
 4. 결론
 참고문헌

• 김지희(한국생산기술연구원 용접접합기술센터/친환경부품소재센터) | Ji-Hui Kim
• 한규호(한국생산기술연구원 용접접합기술센터/친환경부품소재센터) | Kyu-Ho Han
• 김인주(한국생산기술연구원 용접접합기술센터/친환경부품소재센터) | In-Ju Kim
• 김기남(한양대학교 신소재공학부) | Ki-Nam Kim
• 김준기(한국생산기술연구원 용접접합기술센터/친환경부품소재센터) | Jun-Ki Kim