研究生: |
石佩璇 Shi, Pei-Hsuan |
---|---|
論文名稱: |
千瓦級雷射的溫場效應對金屬披覆成效之研究 Study on the Temperature Distribution to the Metal Cladding Efficiency by Using kW-class Fiber Laser |
指導教授: |
趙儒民
Chao, Ru-Min |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 系統及船舶機電工程學系 Department of Systems and Naval Mechatronic Engineering |
論文出版年: | 2020 |
畢業學年度: | 108 |
語文別: | 中文 |
論文頁數: | 103 |
中文關鍵詞: | 金屬雷射積層 、ANSYS 、雷射功率 、移動速度 、Stellite6 |
外文關鍵詞: | Metal laser cladding, ANSYS, Laser power, Moving speed, Stellite6 |
相關次數: | 點閱:137 下載:0 |
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沖棒是沖壓模具的耗材,為了增長使用壽命,在接觸面上披覆鈷基合金。為了提升相關產業的製造技術,本研究透過千瓦級光纖雷射進行積層,並搭配溫度感測器量測基材的溫度,探討不同雷射功率、移動速度及冷卻效應所產生的溫度變化對沖棒金屬積層之厚度成效。
數值模擬部分,使用ANSYS軟體分析積層時移動熱源於不同表面位置所產生的溫度變化,進一步模擬不同雷射功率、移動速度和冷卻效應對整體溫度變化的影響。實驗部分,將Stellite6 多層積層在模具鋼上,以雷射功率、移動速度、散熱塊與單層休息時間為變數,觀察積層表面狀況及量測積層厚度。實際溫度量測,使用耐高溫的熱電偶,用來驗證分析模型的設定與實際溫度是否符合。
結果顯示,在表面強化製程中溫場確實會影響金屬披覆之成效。當比能量越大且高溫維持在特定溫度區間時披覆厚度較厚。透過人工智慧將現有的實驗數據建立數據庫,以比能量、ANSYS模擬積層時單層的起始與結束溫度、送粉率作為變因預估單層積層厚度,並與實驗結果比較亦獲得不錯之結果。
The purpose of this study is to investigate the temperature effects of laser power, moving speed and cooling effect on the thickness of laser cladding Stellite6. A kilowatt class fiber laser was assembled by ourselves to carry out the experiment of laser cladding on the punch. Used the ANSYS transient thermal module to simulate the temperature change during the cladding. Observe the relationship between the laser cladding and the temperature change. The results show that the temperature does affect the effectiveness of metal cladding. When the specific energy is higher and the high temperature is maintained in a specific temperature range, the coating thickness is thicker. Based on the existing experimental data, the thickness of monolayer was predicted successfully.
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