• 대한치과보철학회:학술대회논문집
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• 2000.11a
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• pp.44-44
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• 2000

• 기계와재료
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• v.5 no.2 s.16
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• pp.117-124
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• 1993

• Journal of Korea Foundry Society
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• v.41 no.4
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• pp.342-348
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• 2021

Almost all ferrous foundries use press scrap as the main charge material. In this study, we tried to reduce the melting energy by optimizing the shape and size of press scrap. The experiment was conducted using 3t/h medium frequency induction melting furnaces at two foundries. In the case of the improved condition, customized press scrap was used for initial charging, and small press scrap was used for additional charging. The energy reduction effect of the improved condition was enhanced by reinforcing the cleaning process of the return scrap surface. The reduction ratios of the melting energy basic unit by the improved condition at the two foundries were almost the same (23.3 and 23.9%). The improved condition was very effective in both foundries with different basic unit levels. The reasons for energy reduction and the economic effects of the improved condition were described.

• Journal of Korea Foundry Society
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• v.28 no.2
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• pp.74-78
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• 2008

An integrated riser heating equipment has been developed to control shrinkage defects originated from casting of a marine propeller. The integrated riser heating equipment is composed of up/down moving parts, heating power source parts and an integrated controller. Heat capacity putting into the riser was calculated quantitatively on the base of a heat transfer analysis, which consisted of the establishment of heating model and the theoretical analysis for heat transfer. The riser heating equipment was evaluated through arc heating and electro-slag heating method. With the results, the arc type heating method was selected by considering high thermal efficiency, inexpensive cost, and convenient workship. This equipment improves the quality of a propeller casting and the poor working environment.

• Proceedings of the KIPE Conference
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• 2001.12a
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• pp.155-158
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• 2001

본 논문에서는 LCL공진형인버터를 사용하여 넓은 부하의 변화에 대해서도 공진주파수 추종제어와 공급전력제어가 가능한 전자기 연속주조제어기를 설계하고 이의 특성을 모의실험을 통하여 확인하였다.

• Journal of Korea Foundry Society
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• v.4 no.4
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• pp.30-33
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• 1984

Nitrogen solubility in liquid Fe and Fe-C alloys has been measured by the levitation melting method under 1 atm $N_2$ pressure. Experiments were carried out at the temperature range of $1774-2097^{\circ}K$ and carbon content of 0-5.06wt%. The nitrogen solubilities measured in pure Fe and Fe-C alloys were $log(wt%N)_{Fe}=-424/T-1.129$ and $log(wt%N)_{Fe-C}=-[424/T+1.129+(%C)/19.14{5447/T-0.612}+(%C)^2/19.14$ 2478/T-1.265].

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2007.06a
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• pp.225-226
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• 2007

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2015.11a
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• pp.329-330
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• 2015

단일조성 합금으로 주조-전신재 성형에 모두 적용이 가능한 Duplex화 Al6000계 합금을 만들어 Al6000계열에 대한 부식 거동을 이해하고 열처리후 내식성에 변화를 관찰하기 위해 유럽에서 개발된 수송용 경량화 Al6000계 상용화 합금과 이번에 개발한 주조-전신 Duplex화 Al6000계 합금과의 내식성을 비교, 평가하였다.

• Journal of Korea Foundry Society
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• v.27 no.1
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• pp.13-19
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• 2007

• Journal of Korea Foundry Society
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• v.42 no.4
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• pp.255-260
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• 2022