博碩士論文 109383602 詳細資訊




以作者查詢圖書館館藏 以作者查詢臺灣博碩士 以作者查詢全國書目 勘誤回報 、線上人數:168 、訪客IP:18.117.78.145
姓名 沙伊曼(Imang Eko Saputro)  查詢紙本館藏   畢業系所 機械工程學系
論文名稱 建立整合性過程-結構-屬性模擬架構及其在實際製造過程中的應用:鑄鐵正齒輪的移動感應淬火和鋁合金的近淨形鍛造件
(An integrated process–structure–property modeling framework and their applications in the real-world manufacturing processes: mobile induction hardening of cast iron spur gear and near-net-shape forgings of aluminum alloys)
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摘要(中) 數值模型模擬是在傳統製造過程中實施工業4.0的關鍵部分,以加速實現成功的製造過程並最大限度地降低成本。本論文探討了數值模型模擬在商業製造過程的兩個真實案例中的實現。一種是鑄鋼正齒輪的移動感應淬火工藝,另一種是鋁合金工件的近淨形鍛造製程。該研究透過合併額外的模型參數來增強現有的數值軟體,以提高製程模擬的準確性。對於移動式感應淬火過程,模擬包括掃描速度和熱量產生等參數。該研究探討了關鍵變數(包括輪齒尺寸、掃描速度和氣隙)對硬化結果的影響。結果顯示準確度很高,在各種實驗驗證情境中預測誤差範圍為 3.02% 至 4.05%。多變量非線性迴歸分析強調了製程參數對淬火品質的顯著影響,特別是掃描速度的主導作用。研究結果表明,降低掃描速度、氣隙和側面長度可以提高硬化質量,從而獲得更長的硬化側面、更深的硬化深度和最小化邊緣效應。在鋁合金的近淨成形鍛造過程中,根據 AA7050 減震器、AA7075 曲線切割訂書機和 AA6082 輪的實驗結果評估了附加參數,如活化能、Zener-Hollomon 參數和加工圖。研究表明,這些參數對於準確預測鍛造產品的鍛造缺陷和微觀結構演變至關重要。綜合分析需要考慮所有三個參數,以確保更可靠的預測和製程最佳化。總體而言,這項研究強調了增強數值模型在改進製造流程方面的重要性,為優化生產和確保高品質結果提供了寶貴的見解。
摘要(英) Numerical model simulation is a pivotal part of implementing Industry 4.0 in traditional manufacturing processes to accelerate the realization of successful manufacturing processes and minimize costs. This dissertation explores the implementation of numerical model simulation on two real cases of commercial manufacturing processes. One is a mobile induction hardening process on a cast steel spur gear, and the other is a near-net-shape forgings process on an aluminum alloys workpiece. The study enhances existing numerical software by incorporating additional model parameters to improve the accuracy of process simulations. For the mobile induction hardening process, the simulation includes parameters such as scanning speed and heat generation. The research examines the impact of key variables, including gear tooth size, scanning speed, and air gap, on hardening outcomes. Results indicate high accuracy, with prediction errors ranging from 3.02% to 4.05% in various experimental validation scenarios. Multivariable nonlinear regression analysis highlights the significant influence of process parameters on hardening quality, particularly the dominant effect of scanning speed. Findings suggest that reducing scanning speed, air gap, and flank length enhances hardening quality, resulting in a longer hardened flank, deeper hardening depth, and minimized edge effects. In the near-net-shape forging process of aluminum alloys, additional parameters such as activation energy, the Zener-Hollomon parameter, and processing maps were evaluated against experimental results for AA7050 shock absorbers, AA7075 curve cutter staplers, and AA6082 wheel. The study demonstrates that these parameters are essential for accurately predicting forging defects and microstructure evolution in forged products. Comprehensive analysis requires considering all three parameters to ensure a more reliable prediction and process optimization. Overall, this research underscores the importance of enhanced numerical models in improving manufacturing processes, providing valuable insights for optimizing production and ensuring high-quality outcomes.
關鍵字(中) ★ 數值模型模擬
★ 移動式感應淬火
★ 近淨形鍛造
★ 掃描速度
★ 熱量產生
★ 硬化質量
★ 活化能
★ 齊納-霍洛蒙參數
★ 加工圖
★ 鍛造缺陷
★ 微觀結構演化
關鍵字(英) ★ Numerical model simulation
★ mobile induction hardening
★ near-net-shape forging
★ scanning speed
★ heat generation
★ hardening quality
★ activation energy
★ Zener-Hollomon parameter
★ processing map
★ forging defect
★ microstructure evolution
論文目次 Information i
摘要 ii
Abstract iii
Graphical Abstract iv
Acknowledgement v
Table of content vi
List of figures viii
List of tables xiv
Nomenclatures xv
Chapter 1 Introduction 1
1.1. Background and motivation 1
1.2. Literature review 3
1.2.1. Literature review and research gap filled in the mobile induction hardening research 3
1.2.2. Literature review and research gap filled in the near-net shape forging of aluminum alloys product research
6
1.3. Novelty and contribution 10
1.4. Dissertation writing structure 10
Chapter 2 Materials and method 12
2.1 Studied cast steel material 12
2.2. Studied aluminum alloys materials 13
2.3 Flow stress constitutive model establishment 18
2.3.1. Strain-compensated Arrhenius constitutive modeling
18
2.3.2. ANN-enhanced Arrhenius constitutive modeling 23
2.3.3. Nonlinear-curve-fitted Solhjoo-Chen-Avrami constitutive modeling 27
2.3.4. Comparative study of constitutive modeling methods
36
2.4. Activation energy and Zener-Hollomon parameter data curation 38
2.5. Processing map analysis establishment 43
2.6. Numerical model simulation 45
2.6.1. Mobile induction hardening numerical model 46
2.6.2 Near-net-shape forging numerical model 49
2.7. Microstructure examination method 53
Chapter 3 Introduction of studied cases 54
3.1. Experimental setup of mobile induction hardening 54
3.2. Case#1: AA7050 shock absorber near-net-shape forging
56
3.3. Case#2: AA7075 curve cutter stapler near-net-shape forging 58
3.4. Case#3: AA6082 wheel near-net-shape forging 61
Chapter 4 Results and discussion 64
4.1. Mobile induction hardening analysis 64
4.2. Case#1 results and analysis 79
4.3. Case#2 results and analysis 85
4.4. Case#3 results and analysis 94
Chapter 5 Conclusions and future works 118
5.1 Conclusions 118
5.2 Future works 119
References 120
Appendix 127
A1. Publication list 127
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指導教授 傅尹坤(Yiin-Kuen, Fuh) 審核日期 2024-8-15
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