http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
금속기복합재료의 부품 제조공정에 관한 함침제어알고리즘 개발 및 평가
강충길,윤광식 ( Chung Gil Kang,Kung Sik Yun ) 한국주조공학회 1996 한국주조공학회지 Vol.16 No.6
N/A This paper relates to fabrication processing analysis of metal matrix composites by the injection of liquid metal into a fibrous preforms. One dimensional heat transfer analysis during squeeze infiltration process of aluminum base composites has been studied. An analysis method was investigated for the temperature distribution, infiltration velocity and melt infiltration characteristics with the commercial preform with short fiber array. When molten metal is infiltrated in a fibrous preform with random orientation, phase transformation will be occurred in a region such as molten metal, solidified region, preform region and infiltration composites region a mathematical modelling for a solidification phenomena in fabrication process of metal matrix composites using a squeeze infiltration technique was investigated by the basic relations for liquid metal into a fibrous preform. The temperature distribution of theoretical results was compared with experimental data.
용탄단조법에 의한 금속 복합재료의 제조공정에 있어서 예비성형체의 변형과 그 방지책에 관한 실험적 연구
강충길,구광서,박봉수 ( Chung Gil Kang,Kwang Seo Ku,Bong Soo Park ) 한국주조공학회 1994 한국주조공학회지 Vol.14 No.4
N/A Through a series of experiments with preforms which had random oriented fiber distribution, preform deformation and the tensile strength of metal matrix composites were investigated. Experimental data are presented for injection of aluminum-alloy melts into preforms which are composed of δ-alumina short fiber of SAFFIL with a silica binder. The composites materials used in this study were Al2024 and AC4C. Processing parameters considered in this study were preform temperature, applied pressure, delay time and fiber length. The effects of processing parameters on microstructures of metal matrix composites, SEM micrographs and optical micrographs were also examined.
반용융가공에 의한 Al2O3 / Al 복합재료의 제조 및 열간압출공정
강충길,강성수 ( Chung Gil Kang,Sung Soo Kang ) 한국주조공학회 1993 한국주조공학회지 Vol.13 No.3
N/A A semi-solid alloy in which solid and liquid phase are co-existing is obtained by stirring of A17075 molten metal. A semi-solid alloy is dependent on the corresponding temperature within the solid-liquid range, and the process parameters should be controlled accurately to obtain the homogeneous semisolid alloy. The fabrication possibility of fiber-reinforced aluminum alloy containing Al₂O₃short fibers with vigorous agitation of short fibers were obtained by control of stirring time, solid fraction and impeller speed in extrusion billet fabrication processes. The microstructure to extrusion billet fabricated by low pressure casting was investigated for fiber dispersion state. The relationship between the extrustion force and velocity at hot extrustion, the flow strain and extrusion ratio were theoretically described. The surface defects with lubricants and without lubricant after hot extrustion were investigated. The composites materials after hot extrusion were measured by vickers hardness with extrusion ratio. It has become clear that the secondary working such as hot extrusion was very useful to obtained improved the mechanical properties of metal matrix composites.
고강고 및 저온 고충격 주강소재를 이용한 해양플렌트용 커넥트 주강부품 개발
강충길 ( Chung Gil Kang ),박상식 ( Sang Sik Park ),김태원 ( Tae Eon Kim ) 한국주조공학회 2010 한국주조공학회지 Vol.30 No.4
The high-strength low-alloy (HSLA) steels have low carbon contents (0.05-4125% C) in order to produce adequate formability and weldability, and they have manganese contents up to 1.7%. Small quantities of silicon, chromium, nickel, copper, aluminum, molybdenum are used in various combinations. The results contained in this paper can provide the valuable information on the development of -40°C low temperature HSLA. Furthermore, the present experimental data will provide important database for casting steel materials of the offshore structure.