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系統識別號 U0026-1112201818563000
論文名稱(中文) 金屬微粒於斜板上流動之特性研究及其輥軋應用
論文名稱(英文) Investigation of Micro-Metal Granular Flow on Inclined Plane and Its Application in Roller Compaction
校院名稱 成功大學
系所名稱(中) 航空太空工程學系
系所名稱(英) Department of Aeronautics & Astronautics
學年度 107
學期 1
出版年 107
研究生(中文) 楊振坤
研究生(英文) Zhen-Kun Yang
學號 P46051018
學位類別 碩士
語文別 中文
論文頁數 88頁
口試委員 指導教授-王覺寬
口試委員-呂宗行
口試委員-黃揚升
中文關鍵字 顆粒流  金屬微粒  輥軋製程  片狀微粒 
英文關鍵字 Granular flow  Micro-Metal Granular  Roller Compaction  Flaking granular 
學科別分類
中文摘要 我們生活當中隨處可見的顆粒體物質(Granular Material)與人類生活及工業技術有密切相關,可說是地球上存在最多且最為人們熟悉的物質之一,儘管如此,由於顆粒體物質在碰撞接觸時會產生非線性能量消耗,以至於表現出不同於流體及固體的奇特性,因此,目前研究學者即使對於靜態顆粒物質,仍無法精確的給予描述該狀態的方程式,僅停留在對於顆粒物質的基本流動特徵給予一般性的描述。而隨著顆粒流研究的發展,在研究的顆粒材料尺寸也逐步縮小至接近100 μm,但顆粒材質仍停留在玻璃、碳化矽等非金屬材質,若能將顆粒流研究材料推向價值更高的100μm以下金屬微粒,並實際應用於工業製程上,將可為顆粒流研究創造更多價值。
本研究透過高純度4N銅微粒於斜板上流動,觀察在不同參數條件下對於流動特性的影響作為研究主軸,其中分為四大部分來探討銅微粒之流動特性,第一部分為主要為建立實驗所需之進料裝置相關參數,探討輸入電壓及進料時間對於進料率變化之影響;第二部分為探討進料高度參數對於微粒流動分佈指標及流動寬度之影響;第三部分則是探討進料率對於不同材質斜板的微粒流動影響;第四部分為探討斜板角度對於不同材質斜板的微粒流動影響,而研究的最後將先前微粒流動特性之結果,實際應用於輥軋式片狀銅微粒之生產。
研究結果顯示,透過斜板作為流動介質能增加銅微粒的流動寬度及均勻性,因此成功提升高階電子導電漿料所需片狀微粒之產率,將37μm~100 μm的片狀銅微粒得料率由原先的55 %提高到70 %,有效降低片狀銅微粒的製程時間及生產成本。
英文摘要 Granular materials are ubiquitous in the natural environment and in industry, such as landslides, snow avalanches, salt, flour and nano-pharmaceutical. It may behave as fluids or solids or both. When granular materials are strongly forced, all frictional bonds can be broken and gradually formed a granular flow. In this status, the grain interactions are practically instantaneous inelastic collisions and non-linear dissipated in the system. Granular materials show variety of behaviors that are in many ways from those of other substances. They cannot be easily classified into either solids or fluids. Therefore, granular materials have been defined as a new state of matter. However, the experimental investigations of metal granular flow on the inclined plane were rare, especially for the granular size less than 100 μm. So far, there are still no well-defined equations for general granular systems. The aim of this study is to investigate the characteristics of the ultra-high purity copper granular flow on an inclined plane and improve the production of flaked copper granular efficiency in roller compaction. The results show that there were various flow mechanisms in different experimental parameters, such as the angle between the plate and horizontal, feeder height, feeding rate, amplitude of acceleration and the material of plane. Results also show that both of the flow width and the flow uniformity were increased by setting the inclined plane as the passage. Moreover, the uniform flow condition can be achieved with the tests on Teflon and stainless plate under test conditions of plate angle being 70° and feeding rate being 33.77 g/min. It could be concluded that the production rate of the flaked copper powders increase from 55% to 70% when the copper powers is in the range of 37 μm ~100 μm by setting the inclined plane as the flow medium.
論文目次 摘要 I
英文延伸摘要(Extended Abstract) II
致謝 VIII
目錄 X
圖目錄 XIII
表目錄 XVII
符號表 XVIII
第一章 緒論 1
1.1 前言 1
1.2 文獻回顧 3
1.2.1 顆粒流研究發展歷程 3
1.2.2 顆粒物質擁有的特性 7
1.2.3 顆粒在斜板上的流動機制 10
1.3 研究動機與目的 15
第二章 實驗設備與檢測儀器 16
2.1 金屬微粒流動實驗設備 16
2.1.1 旋風粒徑分級機 17
2.1.2 微型電磁振動送料機 19
2.1.3 高速攝影機 20
2.1.4 高功率 LED聚光燈 22
2.2 金屬微粒輥軋設備 23
2.2.1 三相齒輪減速馬達 24
2.2.2 馬達變頻器 24
2.2.3 S型荷重元 24
2.2.4 荷重元顯示器 24
2.3 檢測儀器 25
2.3.1 掃描式電子顯微鏡(SEM) 25
2.3.2 雷射繞射粒徑分析儀 26
2.3.3 電子天秤 28
2.3.4 霍爾流動計(Hall Flowmeter) 29
2.3.5 3D雷射共軛焦顯微鏡 30
第三章 實驗材料與方法 31
3.1 實驗材料 31
3.1.1 高純度4N銅微粒 31
3.1.2 斜板材料特性 32
3.2 實驗前置作業 35
3.2.1 金屬銅微粒粒徑分級 35
3.2.2 金屬銅微粒流動特性量測 36
3.2.3 金屬銅微粒內摩擦角量測 37
3.2.4 進料機之振動分析 37
3.3 實驗方法 38
3.3.1 金屬銅微粒流動之視流觀測 38
3.3.2 金屬銅微粒流動分佈指標分析 38
3.3.3 金屬銅微粒局部流動均勻度及流動寬度量測 39
3.3.4 片狀銅微粒形貌分析 40
3.4 實驗參數 41
第四章 實驗結果與討論 42
4.1 進料機振動與進料影響關係之實驗結果 42
4.1.1 輸入電壓對於進料機之振動影響 42
4.1.2 振幅加速度對於進料率變化之影響 43
4.1.3 進料時間對於進料率變化之影響 45
4.2 進料高度對於金屬銅微粒流動影響之實驗 46
4.2.1 進料高度對於流動分佈之影響 46
4.3 進料率對於微粒流動影響之實驗結果 51
4.3.1 進料率對於壓克力斜板之微粒流動影響 51
4.3.2 進料率對於鐵氟龍斜板之微粒流動影響 57
4.3.3 進料率對於不鏽鋼板之微粒流動影響 60
4.3.4 進料率於不同材質斜板之微粒流動影響 62
4.4 斜板角度對於微粒流動影響之實驗結果 64
4.4.1 壓克力斜板角度對於微粒流動影響 64
4.4.2 鐵氟龍斜板角度對於微粒流動影響 70
4.4.3 不鏽鋼斜板角度對於微粒流動影響 74
4.4.4 斜板角度對於不同材質斜板之微粒流動影響 76
4.5 片狀銅微粒生產製程之應用結果 79
第五章 結論 83
參考文獻 85
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