鋳造工学
Online ISSN : 2185-5374
Print ISSN : 1342-0429
ISSN-L : 1342-0429
研究論文
アルミニウム合金ダイカストのガス欠陥を低減する排気ゲート自動設計システムの開発
南出 大地奥野 斗希也高木 優斗矢野 賢一中村 直人佐野 公大青木 崇浩
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ジャーナル 認証あり

2022 年 94 巻 8 号 p. 449-455

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  In die casting, the gas inside the injection sleeve and the mold affect the product quality. For this reason, it is necessary to discharge the gas out of the mold as much as possible, and exhaust gates are usually provided for this purpose. However, as product shapes become more complex and the variety of products becomes smaller, the difficulties involved in designing the exhaust gates of such products and the time required for the design process are increasingly becoming challenging issues. On the other hand, recent design methods based on iterative calculations are difficult to apply to the design of exhaust gates because the entire mold needs to be calculated. In this study, we developed a system to automatically design the position and width of exhaust gates that can properly discharge the gas out of the mold without the need for iterative calculations by ranking the best areas of the mold for installing the exhaust gates based on the filling time of molten metal. Finally, experiments were conducted using actual die castings and the results showed that the proposed exhaust gate shape can reduce the blowhole inside the product well.

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