1050 鋁板非對稱壓延之塑性變形實驗研究

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姓名

呂宗壕(Tsung-Hao Lu) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

1050 鋁板非對稱壓延之塑性變形實驗研究
(Experimental research of behavior to change shape of plasticity of asymmetrical rolling aluminum panel 1050)

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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
壓延製程上，更趨自由性與多樣性，在壓延工業之應用上，具
有極大之助益；但非對稱壓延之板材易產生彎曲現象而造成產
品品質降低及設備損壞，因此，本文以實驗的方法，尋找曲率
之臨界值。
本文主要是利用實驗探討試片經非對稱壓延加工後，其試
片的輥輪壓延力、壓延扭矩及彎曲曲率分別於不同縮減率時的
變化情形。實驗條件以異徑異周速為主，包含輥輪與壓延試片
間的界面摩擦及上下輥輪的直徑不同等。
藉由本實驗所規劃的加工條件，可得知壓延後之試片曲率
受上下輥輪直徑的不同、縮減率大小的不同、圓周切線速度不
同步及界面摩擦等條件的影響，試圖找出曲率值介於±
0.0025(1/mm)內的臨界縮減率（即壓延後的成形試片呈現接近
平坦的狀態）產生的條件。藉以達到曲率控制，減少壓延道次，
以期達到加工能量需求較低之經濟性製程。

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, for this reason, this paper use experiment to find
out the critical point of curvature.
This paper discusses rolling force, rolling torque and
curvature ratio with different reduction at asymmetrical rolling.
The experimental conditions include different flat thickness and
interface between rolling and specimens by lubrication or dry
friction.
By experimental conditions can find out specimens that
become curvature turn up or turn down behavior with different
reduction, different rolling speed, interface friction and different
flat thickness after rolling process. Try to find out the critical
reduction that curvature between ±0.0025(1/mm), i.e. curvature is
near zero. For the purpose of control the curvature and decrease
rolling pass times that can reach lower economical production
process.

關鍵字(中)

★ 輥壓
★ 鋁板

關鍵字(英)

★ aluminum panel
★ rolling

論文目次

中文摘要 I
英文摘要 II
致謝 III
目錄 IV
圖目錄 VI
表目錄 VIII
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
第二章實驗基礎 4
2-1 壓延種類 4
2-2 文獻回顧 5
2-2-1 理論解析方面 5
2-2-2 實驗研究方面 7
第三章實驗設備與方法 9
3-1 實驗設備 9
3-1-1 壓延機 9
3-1-2 資料擷取系統 10
3-2 實驗方法 11
3-2-1 試片準備 11
3-2-2 實驗條件 12
3-2-3 編號的表示意義 12
3-2-4 潤滑條件 13
3-2-5 輥輪與工作平台調整 13
3-2-6 壓延實驗步驟 15
3-3 成形板材之曲率量測 16
3-3-1 曲率計之測定原理 16
3-3-2 曲率量測方法之探討 17
3-3-3 曲率計之校正 18
3-4 拉伸試驗 18
3-5 環壓試驗 20
第四章結果與討論 23
4-1 拉伸試驗 23
4-2 環壓試驗 24
4-3 異徑壓延實驗 25
4-3-1 壓延力及壓延扭矩之比較 27
4-3-2 周速比對壓延試片曲率的效應 28
4-3-3 界面摩擦條件對試片彎曲曲率的影響 31
第五章結論 33
參考文獻 35
附錄 62

參考文獻

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指導教授

葉維磬(Wei-Ching Yeh)

審核日期

2009-7-20

推文