查詢結果分析
來源資料
頁籤選單縮合
題名 | 薄件A356鋁合金消失模型鑄造法之充模特性研究=Study on the Filling Behavior of the Thin Section Evaporative Pattern Casting (EPC) A356 Alloy |
---|---|
作者 | 廖高宇; 潘永寧; | 書刊名 | 鑄工 |
卷期 | 24:4=99 1998.12[民87.12] |
頁次 | 頁53-68 |
分類號 | 472.2 |
關鍵詞 | 消失模型; 流路系統; 充模方式; Evaporative pattern casting; Cating systems; Fillability; |
語文 | 中文(Chinese) |
中文摘要 | 本研究探討消失模型 A356 鋁合金層狀薄件之充模特性。在 lcm 平板上等距黏附 不同厚度( 0.2、0.3 )之薄板,流路系統包括:T-S-H、W-W-V、S-T-V 和 S-B-V 四種。研究結果顯示各層的流動長度均隨薄板的厚度增加而增加。W-W-V 系統的金屬靜壓 力雖較低,但其流路系統較簡單,因此其各層的流動長度與 T-S-H 和 S-T-V系統者相 當,而底澆之 S-B-V 流路系統其流動長度則最短。 在各種流路系統中,各層的流動長度 皆是以靠近進模口者為最長,然後逐漸縮短。因此,消失模之充模方式基本上是由進模口循 序漸進往內部流動,即使是頂澆充模方式,亦是由上層逐漸往下層流動。 利用作者所推導 之 EPC 鋁合金流動方程式來計算各層之流動長度,計算結果與實際實驗結果頗為吻合。 |
英文摘要 | The influence of some selected process parameters on the filling behavior of the EPC A356 alloy in relatively thin section plates of 0.2 cm ( 0.08 in.) and 0.3 cm (0.12 in.) in thickness were investigated in this study. The results indicate that the filling behavior of the EPC A356 alloy occurs mainly by a sequential mode. Regarding the gating systems evaluated, the results show that there is not much difference in fillking length among the gating systems of T-S-H, W-W-V and S-T-V, while the average filling lengths of bottom-gated system, i.e., S-B-V, are the lowest among the four gating systems studied. Varying the ingate dimensions but maintaining a constant cross section results in little effect on pattern fillability. In addition, the fillability is impaired moderately by increasing the coating thickness from 0.2 mm to 0.4mm , but is drastically improved by the application of a vacuum. Furthermore, the fillability of the EPC A356 alloy in those relatively thin section plates were calculated based upon the previously derived flow- solidification equation. The theorestically calculated results have been found in good agreement with the experimental results obtained in this study. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。