非對稱壓延加工參數對板材彎曲行為之實驗研究; Experimental research of asymmetrical rolling with processing parameters of aluminum strip curvature behavior

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Title:	非對稱壓延加工參數對板材彎曲行為之實驗研究;Experimental research of asymmetrical rolling with processing parameters of aluminum strip curvature behavior
Authors:	魏上超;Shang-Chao Wei
Contributors:	機械工程研究所
Keywords:	縮減率;壓延曲率;非對稱壓延;rolling curvature;critical reduction;asymmetrical rolling
Date:	2010-07-16
Issue Date:	2010-12-08 13:43:16 (UTC+8)
Publisher:	國立中央大學
Abstract:	本文以試片厚度2.9mm及5mm的A1050鋁片來進行非對稱壓延的加工，是以實驗的方法來探討不同加工因子，包含入口試片不同厚度、不同輥輪之輥徑、上下輥輪切線速度比值以及界面之潤滑條件等，對試片的輥輪壓延力、壓延扭矩及彎曲曲率分別於不同縮減率時的變化情形。實驗條件以異徑及同徑異周速為主，並找出曲率為零之臨界縮減率。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縮減率大小、上下輥輪切線速度比值不同、不同輥輪之輥徑、界面摩擦及試片初始厚度不同等條件的影響，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。 This paper observe aluminum flat A1050 various of curvature ratio at asymmetrical rolling with different specimens thickness (2mm and 2.9mm), and mainly use experiment to discuss with processing different parameters, include different flat thickness, different work rolling ,and different rolling speed, interface between rolling and specimens by lubrication or dry friction and etc., then discuss rolling force, rolling torque and curvature ratio with different reduction at asymmetrical rolling. 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.
Appears in Collections:	[Graduate Institute of Mechanical Engineering] Electronic Thesis & Dissertation

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