| 研究生: |
趙仁豪 Chao, Jen-Hao |
|---|---|
| 論文名稱: |
以CFD研究積層陶瓷電容黏著劑燒除製程 Investigations into the binder burnout process for MLCC manufacturing by CFD |
| 指導教授: |
曾建洲
Tseng, Chien-Chou |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 機械工程學系 Department of Mechanical Engineering |
| 論文出版年: | 2023 |
| 畢業學年度: | 111 |
| 語文別: | 中文 |
| 論文頁數: | 77 |
| 中文關鍵詞: | 計算流體力學 、積層陶瓷電容 、熱製程 、黏著劑燒除 、製程優化 |
| 外文關鍵詞: | Computational Fluid Dynamics, Multilayer Ceramic Capacitor, Thermal Process, Binder Burn-out, Process Optimization |
| 相關次數: | 點閱:172 下載:0 |
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積層陶瓷電容(Multilayer Ceramic Capacitor,MLCC)是現代電子產品中不可或缺的一種電子元件,而在製造工藝上對其品質和性能影響極大,因此優化MLCC的生產工藝,以提高生產效率之研究越來越多,其中黏著劑燒除製程時間長達數天,對此如何利用製程設備以最短的移除週期,且產品不產生缺陷成為重要之課題。
本篇論文研究宗旨是透過計算流體力學的方法,其數值計算軟體為COMSOL Multiphysics,模擬積層陶瓷電容( Multilayer Ceramic Capacitor, MLCC)在製造過程中黏著劑燒除的進程(Binder Burnout, BBO)。將積層陶瓷電容區域視為多孔介質,透過質量守恆、動量守恆、能量守恆、物種守恆以及反應速率方程式,建構出BBO烤爐烤內部熱流場與黏著劑燒除之濃度場,並透過流體力學與熱傳學以及黏著劑燒除理論基礎下進行數值分析,期許將BBO製程烤爐內部情況可視化,並針對目前製程與設備不足之處加以改善。
在實際BBO製程烤爐內上方流道因揮發性產物濃度較高,使得生產品質與效能較差,透過數值模擬結果分析,流道內部製程氣體流量分布不均勻,導致上層氣體產物濃度較高,在最上層與最下層流道出口產物濃度差兩倍之多,主要原因與烤爐內部結構有關,因此本文改變整流板開口分布,試圖使製程中各宮格流道物理量均勻性提升,其有效降低產品失效的風險。
Multilayer Ceramic Capacitor (MLCC) is an indispensable electronic component in modern electronic products, and the manufacturing process has a great impact on its quality and performance, so optimize the production process of MLCC to improve the production efficiency of the study more and more, in which the binder burnout process time up to a few days, how to make use of the process equipment to minimize the removal cycle and the product does not produce defects has become an important issue.
The purpose of this paper is to simulate the Binder Burnout (BBO) process of MLCC during the manufacturing process by means of a computational fluid dynamics method using the software COMSOL Multiphysics. Considering the multilayer ceramic capacitor area as a porous medium, we constructed the thermo-fluid fields inside the BBO oven and the concentration field of binder burnout through the equations of conservation of mass, conservation of momentum, conservation of energy, conservation of species, and reaction rate, and carried out numerical analyses on the basis of the theories of Fluid mechanics, heat transfer, and binder burnout in order to visualize the internal conditions of the binder burnout oven in the BBO manufacturing process and to improve the current manufacturing process and equipment. We hope to visualize the inside of the BBO process oven and improve the current process and equipment.
In the actual BBO process, the upper channel in the oven has a higher concentration of CO, resulting in poorer product quality and performance. Analyzing the results of numerical simulation, the uneven distribution of gas flow in the process inside the runners results in a higher concentration of gases in the upper layer, and the difference in the concentration of products in the outlet of the top and bottom channels is as much as twice, which is mainly related to the internal structure of the oven. Therefore, in this paper, we change the distribution of the spoiler openings in order to try to make the process of increasing the uniformity of the physical quantities of the channels of the various palaces and to effectively reduce the risk of product failure.
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