Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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The Effect of Mold Density and Evacuation on Surface Defect in Lost Form Casting of High Chromium Cast Irons

고크롬 백주철재 소실모형 주조시 표면 결함 발생에 미치는 모형밀도 및 감압의 영향

  • Lee, Kue-Hee (Dept.of Metallurgical & Materials Engineering, yeungnam University) ;
  • Yoo, Kook-Jong (Dept.of Metallurgical & Materials Engineering, yeungnam University) ;
  • Baek, Eung-Ryul (Dept.of Metallurgical & Materials Engineering, yeungnam University) ;
  • Choi, Hyun-Jin (Korea Institute of Industrial Technology) ;
  • Lee, Kyung-Whoan (Korea Institute of Industrial Technology)
  • 이규희 (영남대학교 재료금속공학부) ;
  • 유국종 (영남대학교 재료금속공학부) ;
  • 백응률 (영남대학교 재료금속공학부) ;
  • 최현진 (한국생산기술연구원) ;
  • 이경환 (한국생산기술연구원)
  • Published : 2002.12.20
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Abstract

The effect of mold density and evacuation on surface defect of high chromium cast iron upon EPC process was investigated. Under evacuation of $0.1{\sim}0.3$ atm, surface defects were carbon defect, burn on and misrun. Carbon defect was augmented by increasing mold density from 0.011 g/$cm^3$ to 0.03 g/$cm^3$ under evacuation of $0.1{\sim}0.3$ atm, but carbon defect was decreased by increasing evacuation from 0.1 to 0.3 atm. Burn-on wasn't found under evacuation of 0.1 atm regardless of mold density, but burn-on was augmented by increasing evacuation from 0.2 to 0.3 atm and decreased by reducing mold density. Misrun was only found under 0.1 atm evacuation and 0.011 g/$cm^3$ mold density.

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References

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