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Thin-Wall Aluminum Die-Casting Technology for Development of Notebook Computer Housing

Journal of Materials Science & Technology 2008年第1期24卷 65-69页

作者： chang-seog kang jae-ik cho chang- yeol jeong se- weon choi young-chan kim Korea Institute of Industrial Technology Gwangju Korea

Silicon-based aluminum casting alloys are known to be one of the most widely used alloy systems mainly due to their superior casting characteristics and unique combination of mechanical and physical properties. However,manufacturing of thin-walled aluminum die-casting components,less than 1.0 mm in thickness,is generally known to be very difficult task to achieve aluminum casting alloys with high ***,in this study,the optimal die-casting conditions for producing 297 mm×210 mm×0.7 mm thin-walled aluminum component was examined experimentally by using 2 different gating systems,tangential and split type,and vent ***,computational solidification simulation was also *** results showed that split type gating system was preferable gating design than tangential type gating system at the point of view of soundness of casting and distortion generated after *** was also found that proper vent design was one of the most important factors for producing thin-wall casting components because it was important for the fulfillment of the thin-wall cavity and the minimization of the casting distortion.

关键词： Aluminum Thin-wall die-casting Notebook computer housing Cold chamberdie-casting machine

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维普期刊数据库

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Die Casting Mold Design of the Thin-walled Aluminum Case by Computational Solidification Simulation

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Journal of Materials Science & Technology 2008年第3期24卷 383-388页

作者： young-chan kim chang-seog kang jae-ik cho chang-yeol jeong se-weon choi Sung-Kil Hong Korea Institute of Industrial Technology chonnam National University

Recently, demand for the lightweight alloy in electric/electronic housings has been greatly increased. However, among the lightweight alloys, aluminum alloy thin-walled die casting is problematic because it is quite difficult to achieve sufficient fluidity and feedability to fill the thin cavity as the wall thickness becomes less than 1mm. Therefore, in this study, thin-walled die casting of aluminum （Al-Si-Cu alloy： ALDC 12） in size of notebook computer housing and thickness of 0.8 mm was investigated by solidification simulation （MAGMA soft） and actual casting experiment （Buhler Evolution B 53D）. Three different types of gating design, finger, tangential and split type with 6 vertical runners, were simulated and the results showed that sound thin-walled die casting was possible with tangential and split type gating design because those gates allowed aluminum melt to flow into the thin cavity uniformly and split type gating system was preferable gating design comparing to tangential type gating system at the point of view of soundness of casting and distortion generated after solidification. Also, the solidification simulation agreed well with the actual die-casting and the casting showed no casting defects and distortion.

关键词： Aluminum casting alloy Thin-wall die casting Solidification simulation

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维普期刊数据库

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