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科技與工程學院
機電工程學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73894
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search.filters.author.尤尚邦
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search.filters.author.Shang-Pang Yu
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search.filters.subject.dieless forming
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search.filters.subject.gas forming
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search.filters.subject.laser assisted
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search.filters.subject.氣壓成形
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search.filters.subject.無模成形
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脈衝式雷射輔助氣壓之溝槽無模成形
(
2014
)
尤尚邦
;
Shang-Pang Yu
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溝槽管廣泛地應用於電子產業的散熱元件中,一般而言,其製作皆需透過模具抽拉成形,因此在製作更小尺度的溝槽管時,往往會產生限制。本研究試圖提出另一種加工方法來改善此成形限制,意即利用脈衝式雷射輔助氣壓無模成形,並找出製程參數對不銹鋼薄管溝槽成形之影響。本研究的成形方法是在大氣的環境下,使用一般空氣為工作加壓氣體,再利用脈衝式雷射為加熱源,在不銹鋼薄管內側成形溝槽。接著用光學顯微鏡觀察成形後金相組織,以微硬度試驗測量硬度變化,最後再以掃描式電子顯微鏡搭配能量散佈光譜儀進行觀察及分析。研究結果顯示,利用脈衝式雷射輔助氣壓無模成形可成功地在任何位置製作溝槽,在雷射輸出功率10W及氣體壓力0.1kg/cm2下,可製作出平均槽寬382.5um、平均槽深208.5um的溝槽。此結果指出,即便成品需達到微米尺度,亦能藉由無模成形的方式獲得。
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