大型鎂合金壓鑄件充填過程之數值模擬分析

本文的主要目的是探討大型鎂合金壓鑄件在壓鑄充填過程的最佳壓鑄參數，研究方法包括3D CAD建立鑄件實體模型。再藉由有限元素ProCAST軟體模擬壓鑄時充填過程分佈的物理場，以預測壓鑄件可能發生缺陷的位置再配合灰關聯分析扶找出最佳壓鑄參數。研究之主要內容是透過扇形澆注系統及柱塞速度(1~3m/s)、射出溫度(640~700℃)、模具溫度(220~260℃)3個不同的壓鑄成形參數之實驗規劃表進行充填過程模擬，並以固相率、壓力差、溫度差為品質目標，再應用灰關聯分析扶找出充填過程最佳參數。本個案之研究結果顯示：在柱塞速度2.1m/s、射出溫度640℃、模具溫度220℃的參數下，壓鑄件的品質較佳。

關鍵字

大型鎂合金；壓鑄件；充填過程模擬；灰關聯分析

並列摘要

The optimum parameters of die casting process for large-scale magnesium alloy are studied numerically in this paper. The 3D CAD software is used to create the 3D solid model of die castings. The commercial finite element program ProCAST is used to simulate the physical properties of castings during filling process and allow the user to view the possible position of flaws. Then, the Grey relation analysis is performed to yield the optimum parameters of casting process. The three different types of factors used in research are plunger velocity (1-3 m/s), injection velocity (640-700℃), and die temperature (220-260℃), and the response quality interested are solid phase rate, pressure difference, and temperature difference. For this case study, the results show that better quality of large-scale magnesium alloy castings can be obtained when the process parameters are set to be plunger velocity of 2.lmIs, injection temperature of 640℃, and die temperature of 220℃.

並列關鍵字

large-scale magnesium alloys ； die casting part ； filling process simulation ； grey relation analysis

國際替代計量

大型鎂合金壓鑄件充填過程之數值模擬分析

全文下載

主題瀏覽