• Journal of the Korean Ceramic Society
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• v.35 no.2
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• pp.201-207
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• 1998

A tube-type filter dam(or baffle with holes) for ferrous melt refining is applied to the tundish operation for molten steel having low carbon and ultra-low carbon. The changes in the total oxygen content insoluble aluminum content and the distribution of inclusion size in molten steel during tundish operation were in-vestigated at the pouring part strand and mold of tundish. Removal mechanism of inclusions is considered to be caused by buoyancy action of the filter dam better than filtration action and the size range of in-clusions filtrated by the filter dam was for 30-50$\mu\textrm{m}$. Decrease in deviation of inclusion content in molten steel was confirmed for appling the filter dam in comparison with using conventional dam and weir. Also the filter dam had the advantage of baffle with holes at lower part in the efficiency of inclusions removal.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2009.05a
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• pp.138-140
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• 2009

철강연속주조용 Cu몰드의 내마모성 향상을 위한 Ni-Co/SiC 복합도금을 실행하였다. 우선, Ni, Co의 설파민산 및 황산 Precursor로부터 생성된 피막의 내마모성을 평가하여, Ni-Co 최적 합금도금액을 선정하였다. 이 도금액에 마이크로 및 나노미터 크기의 SiC분말을 분산시켜 복합도금을 진행하였다. 이 때 생기는 문제점은 공정조건을 개선하여 해결하였으며, 그 결과 우수한 내마모성의 Ni-Co/SiC 복합도금 방법을 제안하고자 하였다.

• Journal of Korea Foundry Society
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• v.19 no.1
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• pp.66-70
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• 1999

In order to increase the wettability between ceramic fiber and metal matrix, ceramic fibers are generally coated with metal. In this paper, we examined how the nickel layers coated on continuous graphite fiber to increase the wettability are affected with variation applied pressure. In order to examine the behavior of nickel layer with variation of applied pressure, microstructure and nickel mapping of composites were investigated with SEM, and tensile properties of the composite were tested with UTM. As the applied pressure increases, nickel layers were resolved into the aluminum matrix and ultimate tensile strength of the composite decreased.

• Proceedings of the KIEE Conference
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• 2001.07a
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• pp.362-364
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• 2001

Every engineering discipline has, in recent year, felt the impact of computer-aided analysis and design Normally the studies of power system analysis by computer are load flow, short circuit and harmonic calculation, the amount the voltage deviates from motor starting, reliability and system stability. These studies are very important from the operating and planning points of power system. This paper presents analysis of load flow, short circuit current calculation, the effect for voltage deviation of induction motor starting and harmonic distortion in power system of continuous casting(C. C) plant. The resulting of analysis is applied the configuration and design engineering of power system.

• Journal of the Korean Ceramic Society
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• v.31 no.9
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• pp.1044-1052
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• 1994

Tape casting technique was successfully applied to produce porous ceramics and multi-layered ceramics containing porous layers, where spherical hollow polymer particles were introduced as pore precursors. In the presence of extreme differences in density and size between Al2O3 and pore precursor particles, hindered settling was effective in preventing segregation of component particles and packing behavior of mixed powders was improved through bimodal packing. There were two transitions in packing behavior of mixed powders. The first transition took place at 40~50 vol% pore precursor addition, where majority of pores changed from close to open pore state. The other transition occured at 60~70 vol% pore precursor addition, where pore precursor particles formed a continuous network structure.

• Proceedings of the KIEE Conference
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• 1997.07a
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• pp.288-290
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• 1997

The electromagnetic theory is applicated on the field of electromagnetic continuous casting(EMC). This paper treats the stream phenomena of high frequency current on the solid-loop coil of which consists the hollow conductor. The governing equation is derived from elctromagnetic field theory and the characteristics are analyzed by FEM. The results may be availabe data on designing the optimum shape of the coil for the improved pinch effect.

• Journal of the Korean Ceramic Society
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• v.35 no.1
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• pp.33-40
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• 1998

A MgO-CaO-based coating material for ferrous melt refining is applied to the tundish operation for mol-ten steel having low carbon. The changes in the total oxygen content insoluble aluminum content and the content of inclusions in molten steel during tundish operation were measured at the pouring part strand of tundish and mold. On the basis of the experimental results the interfacial reaction occurring between the coating materials and the molten steel in tundish was discussed and compared with the theoretical con-sideration. It is concluded that interfacial reaction is not active at the strand part of tundish but is active at the pouring part because of the turbulent flow in the molten steel.

• Journal of the Korean Ceramic Society
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• v.34 no.7
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• pp.677-684
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• 1997

The effects of fluxes on MgO coating materials for tundish were investigated. As the number of charge in continuous casting was increased, the basicity of tundish slag was decreased due to the increase of silica formed by dissolution from rice hull. As a result, the wear of magnesia lining was increased. In aggregates of MgO coating materials, magnesioferrite was formed by the reaction between magnesia and ferric oxide formed by the oxidation of molten steel, while matrix parts of MgO coating materials were worn by CaO-Al2O3-SiO2 compounds. Silica in rice hull extracted to the molten slag reduced basicity of slag and formed forsterite in the result of its reaction with magnesia lining. Also, fayalite was formed from the reaction between silica and ferric oxide and it caused the increment of magnesia lining's wear. The wear of magnesia lining by flux of CaO-SiO2 was larger than that of Cao-Al2O3 and calcia in the flux increased the wear of magnesia lining through the formation of rankinite.

• Proceedings of the International Microelectronics And Packaging Society Conference
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• 2000.11a
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• pp.89-92
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• 2000

Non-aqueous tape casting of LTCC with PVB binder has been studied in a continuous tape casting machine. The aim of the study was to evaluate this type of system in the different Binder/Plasticizer and solid content compositions. Each four slurry compositions were used in the experiments with varied binder/plasticizer and solid content. All the slurries gave good quality tapes with smooth surfaces without blisters or pinholes. The highest mechanical properties was obtained for the B/P=3.0, powder content 70vol% composition from 52 ${\mu}{\textrm}{m}$ green tapes, a tensile strength of 4.6 MPa and a linear extension of 29.5%

• Proceedings of the Korea Contents Association Conference
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• 2005.05a
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• pp.183-190
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• 2005

In recent, the blood type waken the reader's interest in the field of movie, music, and education. Now, the blood type is far better than was anticipated in every aspects of life than a personal taste and appear as a familiar topic of story telling in modem life-style. Long time ago in Japan, the blood type was used to a casting of character and a consistent personality. In this study, the types of personality is combined with a blood type and devided with a frame of types. Also, personalities of character are observed and compared in a general animation which not applied a blood type. In particular, a personalities of family in animation are analized through a blood type and applied by character. Also, the blood types based on character of families get an appeal of audience. From now on, it will expect a variable analysis of animation, and needs for a continuous study not only blood type between families but relationship between blood types.