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  • 學位論文

失效模式與效應分析(FMEA)之應用 – 以個案公司化成鋁箔製程改善為例

The Application of the Failure Mode and Effect Analysis - A Study of the Formed Aluminum Foil Production Process of the Case Company

指導教授 : 胡伯潛
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摘要


化成鋁箔透過電能和水作用,在已擴增表面積的電蝕箔表面產生一層氧化皮膜作為絕緣之用,於電容器生產中為所需的主要原料之一。個案公司以生產化成鋁箔的產品為主,其目前產品的不良率能維持於不超過1%的水準。由於該產品多半會使用於安全性要求極高的狀況中(例如車用電子零組件),所以客戶無法容忍該產品存在任何不良的情形。 目前個案公司將其產品每月不良率的水準訂為0.85%,然而,此目標並非每月都能達成。為了進一步提升及改善產品的品質,使其產品的不良率能一直保持在0.85%之下,本研究乃嘗試以失效模式與效應分析的方法,將個案公司化成鋁箔製程中各項作業流程,造成產品不良的原因(失效模式)找出後,再根據這些失效模式的重要性,依序處理或解決。經本研究調查,50項風險失效模式將依其重要性之排序,逐一改善,其中排序前五項的失效模式分別為:電蝕箔材料外觀瑕疵、電蝕箔材料氯含量過高、化成鋁箔外觀瑕疵、化成液濃度過低、電蝕箔材料有效面積不足。 個案公司產品品質改善專案的重要工作項目,將以本研究所得到的結果,建立化成鋁箔製程中失效模式的管制方案,藉以減少失效模式發生的風險,達到個案公司訂定的不良率目標,並有效提升客戶的滿意度。

並列摘要


Through electricity and water, formed aluminum foil creates an oxide film for insulation on the surface on enlarged etching aluminum foil. Formed aluminum foil is the key raw material in the production of capacitor and is the main product of the case company in this study. Currently, the defect rate of the formed aluminum foil of the case company can be maintained at less than 1% level. Because the product will be used in situations where the safety is highly required, customers cannot tolerate any defect of the product. Currently, the case company sets the defect rate level of the formed aluminum foil at 0.85%, however, this goal is not reached every month. In order to improve the quality of the product and keep the product defect rate to be below 0.85%, the study applies the failure modes and effects analysis (FMEA) to the manufacturing process of the formed aluminum foil of the case company to discover the failure modes, prioritize the failure modes according to their importance, and find the corresponding resolution accordingly. In this study, it is found that the top five failure modes are: appearance flaws on the etching aluminum foil, chlorine content of the etching aluminum foil is too high, the appearance flaws on the formed aluminum foil, concentration of the formed liquid is too low, available area of the etching aluminum foil is not enough. The case company will adopt the result of this study to establish a control mechanism of the manufacturing process of the formed aluminum foil to improve the quality of the formed aluminum foil and customers’ satisfaction level.

參考文獻


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被引用紀錄


鐘文宏(2017)。因應供應鏈中斷風險之關鍵韌性因素研究:整合模式之應用〔碩士論文,國立虎尾科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0028-3107201716523200
鄭琮恩(2017)。失效模式與效應分析之應用-以個案公司新腳輪之製程為例〔碩士論文,國立虎尾科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0028-1007201722234100
張炳杰(2017)。失效模式與效應分析(FMEA)之應用-以個案公司 自行車避震器上叉管生產製程為例〔碩士論文,國立虎尾科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0028-1007201710221600

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