A1050板材經同徑異周速壓延之彎曲曲率行為的實驗研究

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姓名

張維忠(Wei-Chung Chang) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

A1050板材經同徑異周速壓延之彎曲曲率行為的實驗研究
(Experimental study of A1050 plate under asymmetrical rolling with symmetrical radius)

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摘要(中)

對稱平板輥壓是一種有效率且廣泛運用於一般工業、建築的成型方式。其優點能使材料提高硬度同時能讓成型產品更趨多樣性及變化性。但同徑對稱壓延，板材仍易產生彎曲的外型，因此本文使用不同的參數條件藉由實驗的方式，取得壓延時產生的壓延力及壓延扭矩藉此瞭解平板輥壓條件對成型變化的影響。更進一步熟悉輥壓設備的效能以提升輥壓設備使用效率也能減少成型造成環境設備及產品上的損傷使成本的提升。
本文中以鋁製板材試片A0150P進行同徑輥輪的非對稱壓延實驗。藉由探討兩種試片厚度、縮減率的變化、輥輪切線速度比不同以及輥輪界面潤滑條件差異進行實驗，以獲得不同的參數條件對板材彎延現象所產生曲率的影響。同時找出壓延板材試片的曲率值介於±0.0025 (1/mm)內(即成型試片趨於平坦的加工成型結果)其加工成型條件以便提供未來曲率的控制因素，以提升工業上的經濟效率，為本篇論文之目的。

摘要(英)

Symmetric plate rolling is a kind of the efficient forming methods, and is used in industry、architecture broadly. The advance of plate rolling is making higher hardness and varied forming products. Even if getting bending shape easily in symmetric rolling, we get rolling force and rolling torque by different parameters of experiments in this study in order to figure out the effects formed in different rolling conditions. We further are familiar with rolling equipments to raise the efficiency and decrease the damages of the equipments and products.
In this paper, we use the specimens of aluminum A1050P to do the experiments of asymmetric rolling with the same diameter rolls. With two thickness、varied reduction、different peripheral speeds、dried and lubricant surface conditions to get different parameters that cause curvature of plate bending. To the purpose of this paper, we observe the values of curvatures (the results of strip specimens that after forming )between ±0.0025(1/mm) to provide the factors of controlling curvatures in the future, and raise economic efficiency in industry.

關鍵字(中)

★ 縮減率
★ 壓延曲率
★ 非對稱壓延

關鍵字(英)

★ critical reduction
★ asymmetrical rolling
★ rolling curvature

論文目次

摘要 i
Abstract ii
致謝 iii
目錄 iv
圖目錄 viii
表目錄 x
第一章緒論 - 1 -
1-1 壓延的歷史 - 1 -
1-2 壓延的背景 - 2 -
1-3 板材壓延的種類 - 3 -
1-4 壓延研究目的 - 5 -
第二章實驗基礎 - 7 -
2-1 壓延基礎概念 - 7 -
2-1-1 壓延成型技術 - 7 -
2-1-2 平板壓延之成因 - 7 -
2-2 文獻回顧 - 9 -
2-2-1 實驗研究方面 - 9 -
2-2-2 理論解析方面 - 13 -
2-2-3 摩擦係數研究方面 - 16 -
第三章實驗設備與方法 - 19 -
3-1 實驗設備 - 19 -
3-1-1 壓延設備 - 19 -
3-1-2 數據擷取流程 - 20 -
3-2 實驗方法 - 21 -
3-2-1 試片成分與尺寸 - 21 -
3-2-2 實驗試片準備 - 22 -
3-2-3 輥輪及試片表面粗糙度量測 - 23 -
3-2-4 試片記號表示意義 - 24 -
3-2-5 介面摩擦與潤滑條件 - 24 -
3-2-6 輥輪間隙及工作平台水平之調整 - 26 -
3-2-7 壓延實驗步驟 - 28 -
3-3 試片之材料拉伸試驗 - 30 -
3-4試片曲率量測方法之探討 - 32 -
3-4-1 繪圖描點法 - 32 -
3-4-2曲率計量測法 - 34 -
3-5 Forward Slip - 36 -
第四章結果與討論 - 38 -
4-1 拉伸試驗 - 38 -
4-2 輥壓試驗 - 39 -
4-2-1壓延力 - 40 -
4-2-2壓延扭矩 - 43 -
4-2-3壓延曲率 - 45 -
4-3 摩擦係數 - 48 -
第五章結論 - 51 -
參考文獻 - 54 -
附錄A - 82 -
附錄B - 94 -

參考文獻

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指導教授

葉維磬(Wei-Ching Yeh)

審核日期

2010-7-22

推文