A1050P板材經非對稱壓延之彎曲行為的實驗研究

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陳遠欣(Yuan-Shin Chen) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

A1050P板材經非對稱壓延之彎曲行為的實驗研究
(This experiment of bent appearance at asymmetrical rolling with A1050P specimens)

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摘要(中)

由於非對稱壓延可有效降低壓延力及壓延扭矩，使材料於壓延製程安排上，更趨自由與多樣性，在壓延工業之應用上，具有極大之助益；但於非對稱壓延後之板材易產生彎曲現象而造成產品品質降低及設備損壞。
本文以試片厚度2mm及2.9mm的A0150P鋁板進行同徑對稱及非對稱壓延實驗，以探討試片厚度、縮減率、輥輪周速比及界面潤滑條件對成形板材彎曲曲率的效應。實驗結果顯示，(1) 成形試片曲率達到平板狀態理想值(±0.0025)的縮減率和試片厚度成正比關係；(2) 成形試片曲率達到平板狀態理想值(±0.0025)的縮減率和周速比係成正比的關係；(3) 不同界面潤滑條件對於壓延力及壓延扭矩有明顯的降低效應，但對改善成形試片曲率無明顯的效應。

摘要(英)

Due to the asymmetrical rolling can reduce rolling force and rolling torque that will make rolling process also flexible and variable. There are extreme advantages in application of rolling industry. The specimens will curvature after the asymmetrical rolling, the flat bending will reduce production quality and impact machine.
This paper observe various of curvature ratio at symmetrical and asymmetrical rolling with different specimens thickness(2mm and 2.9mm),mismatch peripheral speed,reduction, lubrication. The result is that:(1) The specimens reduction that curvature ratio is between ±0.0025 is directly proportional to specimens thickness.(2) The specimens reduction that curvature ratio is between ±0.0025 is directly proportional to mismatch peripheral speed.(3) With Lubrication, rolling force and rolling torque is decreased, but curvature ratio is not improve.

關鍵字(中)

★ 曲率
★ 異周速
★ 非對稱壓延

關鍵字(英)

★ Curvature
★ asymmetrical rolling
★ mismatch peripheral speed

論文目次

中文摘要 I
英文摘要 II
誌謝 III
目錄 IV
圖目錄 VII
表目錄 XII
第一章緒論 1
1-1 前言 1
1-2 板材非對稱壓延 2
1-3 研究動機 3
第二章理論基礎 4
2-1 壓延種類 4
2-2 文獻回顧 5
2-2-1 實驗研究方面 5
2-2-2 理論解析方面 8
2-2-3 摩擦係數方面 10
第三章實驗設備與方法 13
3-1 實驗設備 13
3-1-1 壓延機 13
3-1-2 資料擷取系統 14
3-2 實驗方法 14
3-2-1 試片準備 14
3-2-2 實驗條件 15
3-2-3 編號表示意義 16
3-2-4 輥輪與試片之界面潤滑條件 17
3-2-5 輥輪及工作平台之調整 18
3-2-6 壓延實驗步驟 19
3-3 試片成形曲率之量測 20
3-3-1 曲率計之測定原理 20
3-3-2 曲率量測方法之探討 21
3-3-3 曲率計之校正 22
3-4 拉伸試驗 22
3-5 環壓試驗 24
3-6 Forward Slip 26
第四章結果與討論 30
4-1 拉伸實驗 30
4-2 環壓實驗 31
4-3 Forward Slip 31
4-4壓延實驗結果 33
4-4-1 周速比( )對壓延力的影響 35
4-4-2 周速比( )對壓延扭矩的影響 38
4-4-3 試片厚度對成形試片曲率之效應 40
4-4-3 周速比對成形試片曲率之效應 43
4-4-4 界面潤滑條件對成形試片曲率之效應 46
第五章結論 49
參考文獻 51
附錄A 87
附錄B 90
附錄C 93

參考文獻

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指導教授

葉維磬(Wei-Ching Yeh)

審核日期

2008-7-23

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