精密鑄造中殼模厚度和保溫棉對縮孔影響的預測—以316L不銹鋼流量計之缺陷改善為例

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姓名

曾瀚緯(Han-Wei Tseng) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

精密鑄造中殼模厚度和保溫棉對縮孔影響的預測—以316L不銹鋼流量計之缺陷改善為例
(Effect of shell mold thickness and insulating wool pattern on internal porosity in investment casting of vortex flow meter)

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至系統瀏覽論文 (2027-9-16以後開放)

摘要(中)

在這項研究中，研究了具有不同保溫棉方案和殼模厚度的精密鑄造 (IC) 用於幾何復雜的渦流流量計。殼模面漿由鋯石 (ZrSiO4) 和膠狀二氧化矽 (SiO2) 接著劑組成。鋯砂因其化學穩定性、較高溫度下的抗斷裂性和較低的熱膨脹係數而被認為是一種有潛力的高溫應用工程材料。通過實驗驗證了殼模的基本性能，如機械性質和熱性質。發現斷裂模量為5.6±0.5MPa。傳熱係數 (HTC) 計算為在 600-900 W/(m2 K) 範圍內。後來作為軟體模擬的資料庫輸入。此外，使用電腦輔助工程 (CAE) 方法和測試，該研究調查了不同層數和保溫棉方案的熱性質是否會影響鑄造缺陷的形成。CAE 模擬顯示初始層數方案會導致管壁問題。為了減少熱點區域，第一步是採用不同的保溫棉方案，這可以將縮孔形成的概率降低 17%，第二步是增加模殼的厚度以減少熱點形成的百分比。經計算後，最優化設計可使縮孔形成的概率降低 47%。通過改變殼模的厚度，不同的熱性質可以顯著減少批量生產的渦流流量計的鑄造缺陷。在這項研究中，渦流流量計改進的最佳解決方案已被鑄造廠採用並量產，而後X光檢測在渦流流量計管壁常有缺陷的地方，結果判定為無缺陷，驗證了保溫改進方案的效果和可行性。

摘要(英)

Investment casting (IC) with different insulating wool pattern and shell mold thickness is investigated for a geometrically complex vortex flow meter in this study. The primary coating consists of zircon (ZrSiO4) with colloidal silica (SiO2) binder. Zircon is regarded as a potential engineering material for high-temperature applications for its chemical stability, strong fracture resistance at higher temperatures, and low thermal expansion coefficient. The fundamental properties of the shell mold, such as mechanical property and thermal properties were experimentally validated. The modulus of rupture was found to be 5.6±0.5MPa. The Heat transfer coefficients (HTC) was calculated to be in the range of 600-900 W/(m2 K). Later as the input data for numerical simulation. In addition, using a computer-aided numerical (CAE) approach and tests, this research investigated whether the thermal properties of varied layer thicknesses and insulating wool patterns may impact the formation of casting defects. The CAE simulation reveals that the initial layer thickness would result in pipe wall problems. To lessen the hot spot region, the first step is to employ different insulating wool patterns, which could reduce the probability of shrinkage forming by 17%. The second step is to increase the thickness of the mold shell to reduce the percentage of hot spots. It is calculated that the optimal design would reduce the probability of shrinkage forming by 47%. The varying thermal properties may significantly decrease the casting faults of a mass-produced vortex flow meter by altering the thickness of the shell mold. In this study, the best solution for vortex flow meter process improvement has been adopted by an IC foundry and mass-produced. The X ray inspection shows flawless results in the vortex flow meter pipe wall where defects often form, and proves the effect and feasibility of the thermal insulation improvement proposal.

關鍵字(中)

★ 電腦輔助工程
★ 316L不鏽鋼
★ 殼模層數
★ 縮孔
★ 精密鑄造
★ 渦流流量計

關鍵字(英)

論文目次

摘　要 I
Abstract III
誌　謝 V
圖目錄 IX
表目錄 XII
第一章：緒論 1
1-1　前言 1
1-2　研究動機與方法 4
第二章：文獻回顧 6
2-1　精密鑄造 6
2-2　電腦輔助工程 6
2-3　鑄造缺陷的預測和數據分析 7
第三章：材料與實驗設置 9
3-1　實驗設備 9
第四章：工業閥件錶體模擬結果與探討 16
4-1　緒論 16
4-1-1　鑄件基本資料與常見缺陷 16
4-1-2　初始鑄造組樹方案與基本參數 19
4-2　殼模的機械性質與成分分析 22
4-2-1　殼模機械性質 22
4-2-1　EDS成分分析 24
4-3　熱性質現場數據收集與資料庫建置 26
4-4　各鑄造組樹方案之模擬結果 33
4-5　試鑄與實際生產狀況 43
4-5-1　螢光檢驗判定缺陷 43
4-6　渦流流量計鑄件開發之結論 49
第五章：結論 50
參考文獻 52

參考文獻

[1] N. O’Sullivan, J. Mooney, and D. Tanner, "Enhancing permeability and porosity of ceramic shells for investment casting through pre-wetting," Journal of the European Ceramic Society, vol. 41, no. 16, pp. 411-422, 2021, doi: 10.1016/j.jeurceramsoc.2021.09.022.
[2] T. R. Vijayaram, S. Sulaiman, A. Hamouda, and M. Ahmad, "Numerical simulation of casting solidification in permanent metallic molds," Journal of materials processing technology, vol. 178, no. 1-3, pp. 29-33, 2006.
[3] P.-H. Huang, L. K.-L. Shih, H.-M. Lin, C.-I. Chu, and C.-S. Chou, "Novel approach to investment casting of heat-resistant steel turbine blades for aircraft engines," The International Journal of Advanced Manufacturing Technology, vol. 104, no. 5-8, pp. 2911-2923, 2019, doi: 10.1007/s00170-019-04178-z.
[4] X. Zhi, Y. Han, and X. Yuan, "Casting process optimization for the impellor of 200ZJA slurry pump," The International Journal of Advanced Manufacturing Technology, vol. 77, no. 9, pp. 1703-1710, 2015.
[5] P.-H. Huang, Y.-T. Chen, and B.-T. Wang, "An effective method for separating casting components from the runner system using vibration-induced fatigue damage," The International Journal of Advanced Manufacturing Technology, vol. 74, no. 9, pp. 1275-1282, 2014.
[6] Y. Hou, Z. Cheng, W. Feng, and B. Liu, "Using Procast to forecast and analysis of the shrinkage porosity and its technical optimization swaminathan," China Water Transport, vol. 7, no. 3, pp. 67-69, 2007.
[7] P. H. Huang, W. J. Wu, and C. H. Shieh, "Compute-aided design of low pressure die-casting process of A356 aluminum wheels," in Applied Mechanics and Materials, 2017, vol. 864: Trans Tech Publ, pp. 173-178.
[8] Y. Dong, X. Li, Q. Zhao, J. Yang, and M. Dao, "Modeling of shrinkage during investment casting of thin-walled hollow turbine blades," Journal of Materials Processing Technology, vol. 244, pp. 190-203, 2017.
[9] D. Wang, J. Sun, A. Dong, D. Shu, G. Zhu, and B. Sun, "An optimization method of gating system for impeller by RSM and simulation in investment casting," The International Journal of Advanced Manufacturing Technology, vol. 98, no. 9-12, pp. 3105-3114, 2018, doi: 10.1007/s00170-018-2474-z.
[10] Y. C. Kao et al., "Computer-aided engineering (CAE) simulation for the robust gating system design: Improved process for investment casting defects of 316L stainless steel valve housing," International Journal of Metalcasting, pp. 1-19, 2022.
[11] Z. Wang, J. Wang, L. Yu, J. Wu, M. Wang, and B. Su, "Numerical simulation and process optimization of vacuum investment casting for Be–Al alloys," International Journal of Metalcasting, vol. 13, no. 1, pp. 74-81, 2019.
[12] J. Sun et al., "Gas entrainment behavior of aluminum alloy engine crankcases during the low-pressure-die-casting process," Journal of Materials Processing Technology, vol. 266, pp. 274-282, 2019.
[13] D. Li, J. Campbell, and Y. Li, "Filling system for investment cast Ni-base turbine blades," Journal of materials processing technology, vol. 148, no. 3, pp. 310-316, 2004.
[14] B. Hu, K. Tong, X. P. Niu, and I. Pinwill, "Design and optimisation of runner and gating systems for the die casting of thin-walled magnesium telecommunication parts through numerical simulation," Journal of Materials Processing Technology, vol. 105, no. 1-2, pp. 128-133, 2000.
[15] X.-P. Zhang, G. Chen, S.-M. Xiong, and Q.-Y. Xu, "Computer simulation of the solidification of cast titanium dental prostheses," Journal of materials science, vol. 40, no. 18, pp. 4911-4916, 2005.
[16] H.-J. Kwon and H.-K. Kwon, "Computer aided engineering (CAE) simulation for the design optimization of gate system on high pressure die casting (HPDC) process," Robotics and Computer-Integrated Manufacturing, vol. 55, pp. 147-153, 2019.
[17] E.-S. Kim, J.-Y. Park, Y.-H. Kim, G.-M. Son, and K.-H. Lee, "Evaluation of diecasting mold cooling ability by decompression cooling system," Journal of Korea Foundry Society, vol. 29, no. 5, pp. 238-243, 2009.
[18] J. Zheng, B. Huang, and X. Zhou, "A low carbon process design method of sand casting based on process design parameters," Journal of Cleaner Production, vol. 197, pp. 1408-1422, 2018.
[19] M. Xu, S. N. Lekakh, and V. L. Richards, "Thermal Property Database for Investment Casting Shells," International Journal of Metalcasting, vol. 10, no. 3, pp. 329-337, 2016, doi: 10.1007/s40962-016-0052-4.
[20] P.-H. Huang, C.-Y. Cheng, W.-J. Huang, and C.-S. Chou, "Optimal design of investment casting system for toothed chain joint: computer simulations and experimental verification," The International Journal of Advanced Manufacturing Technology, vol. 106, no. 5-6, pp. 1931-1943, 2019, doi: 10.1007/s00170-019-04765-0.
[21] A. Sata and B. Ravi, "Bayesian inference-based investment-casting defect analysis system for industrial application," The International Journal of Advanced Manufacturing Technology, vol. 90, no. 9, pp. 3301-3315, 2017.
[22] Y. C. Kao et al., "Prediction of the Effect of Asymmetric Pouring Basin Geometry on Temperature, Internal Porosity in Tilt Casting Housing of Scroll Compressor," International Journal of Metalcasting, vol. 16, no. 2, pp. 613-621, 2022.
[23] R. Hardin, K. Choi, N. Gaul, and C. Beckermann, "Reliability based casting process design optimisation," International Journal of Cast Metals Research, vol. 28, no. 3, pp. 181-192, 2015.
[24] P. Pichler, B. J. Simonds, J. W. Sowards, and G. Pottlacher, "Measurements of thermophysical properties of solid and liquid NIST SRM 316L stainless steel," Journal of Materials Science, vol. 55, no. 9, pp. 4081-4093, 2020.
[25] Y. Miyata, M. Okugawa, Y. Koizumi, and T. Nakano, "Inverse columnar-equiaxed transition (CET) in 304 and 316L stainless steels melt by electron beam for additive manufacturing (AM)," Crystals, vol. 11, no. 8, p. 856, 2021.
[26] C. H. Konrad, M. Brunner, K. Kyrgyzbaev, R. Völkl, and U. Glatzel, "Determination of heat transfer coefficient and ceramic mold material parameters for alloy IN738LC investment castings," Journal of Materials Processing Technology, vol. 211, no. 2, pp. 181-186, 2011, doi: 10.1016/j.jmatprotec.2010.08.031.
[27] [Online]. Available: https://www.isolite.co.jp/products/rcf/isowool-blanket/.

指導教授

傅尹坤(Yiin-Kuen Fuh)

審核日期

2022-9-23

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