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研究生:黃南順
研究生(外文):Nan-Shuen Huang
論文名稱:濕砂模與鑄件界面熱傳分析
論文名稱(外文):The Analysis of Interfacial Heat Transfer BetweenGreen-Sand Mold and Casting
指導教授:趙隆山
指導教授(外文):Long-Sun Chao
學位類別:碩士
校院名稱:國立成功大學
系所名稱:工程科學系碩博士班
學門:工程學門
學類:綜合工程學類
論文種類:學術論文
論文出版年:2003
畢業學年度:91
語文別:中文
論文頁數:71
中文關鍵詞:界面熱傳係數濕砂模鑄造逆運算法總容量法
外文關鍵詞:lump capacitance methodinterfacial heat transfer coefficientinverse methodgreen-sand mold casting
相關次數:
  • 被引用被引用:6
  • 點閱點閱:282
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  • 下載下載:39
  • 收藏至我的研究室書目清單書目收藏:0
在鑄造過程之熱傳模式分析中,砂模與金屬界面熱傳情形是一關鍵性的問題,若無法妥善地處理此界面條件,會直接影響分析的結果。由於濕砂模與鑄件間非為緊密接觸,在模與金屬界面之熱傳方析中,需要一界面熱傳係數h來估算金屬的界面熱束。本文針對濕砂模鑄造實驗,使用鋁、A356鋁合金及90%Sn-10%Pb作為鑄造材料,以圓柱與長方體作為鑄件模型,用熱電偶量測出於砂模與金屬界面附近之溫度對時間的關係圖,利用逆運算法、顯性法、銅塊量測及總容量法等四種不同的計算法,計算出凝固過程中之砂模與金屬界面熱通量及界面熱傳係數。本文所使用的四種不同方法,提供研究相關領域多樣化的選擇,進而探討如何以簡易之方式,精確地估算出砂模與金屬界面熱通量及界面熱傳係數,以利於鑄造之熱傳分析。
In the heat-transfer analysis of a casting process, how to grasp the heat-transfer condition at the sand-mold/metal interface is a key problem. Not manipulated properly, it will directly affect the final result of the analysis. Because it is not perfect contact at the interface between green-sand mold and metal, the analysis needs an interfacial heat transfer coefficient to compute the heat fluxes from the metal to the sand mold at the interface. This paper is to study how to obtain the heat-transfer coefficient at the interface of green-sand mold casting. The casting geometries were cylinder and rectangle prism. The metal materials were aluminum, A356 aluminum alloy and Sn-10wt%Pb alloy. In the experiments, thermal couples were used to obtain the temperature data of measured points near the mold/metal interface. From these temperature data, the heat fluxes and heat-transfer coefficients at the interface were computed by applying the inverse, the explicit, the lump capacitance and Cu-assisted measurement methods. These four easy ways would provide a multiple choice for the future heat-transfer study of a casting process.
中文摘要 ……………………………………………….Ⅰ
Abstract ……………………………………………… Ⅱ
誌謝……………………………………………………….Ⅲ
目錄…………………………………………………..….IV
表目錄 ………………………………………………….Ⅵ
圖目錄 ………………………………………………….Ⅶ
符號說明 …………………………………………………Ⅹ
第一章 緒論 ……………………………………………..1
第二章 數值分析與界面熱阻分析……………………….4
2-1 金屬界面熱束之計算.……………………......4
2-1-1 逆運算模式……………………………………...5
2-1-2 顯性法(Explicit method)…………………....8
2-1-3 銅塊量測qmetal…………………………….....8
2-1-4 總容量法(Lump capacitance method)……....9
2-2 界面熱阻之分析……………………………....11
第三章 實驗設備與方法……………………………..…13
3-1 鑄造之實驗設備…………………………......13
3-2 砂模與木模之設計………………………………14
3-3 實驗方法與步驟………………………………..14
3-3-1 濕砂模鑄造實驗方法與步驟…………………..15
3-3-2 量測鑄件與砂模溫度分佈的方法……………..16
3-3-3 合模與澆鑄…………………………………....16
第四章 結果與討論……………………………………..17
4-1 鑄件凝固之縮孔問題…………………………..17
4-2 鑄件的溫度量測…………………………………18
4-2-1 純金屬鋁………………………………………..18
4-2-2 A356鋁合金……………………………………..19
4-2-3 90%Sn-10%Pb合金……………………………...19
4-3 金屬界面熱束之分析……………………………19
4-3-1 Beck逆運算法…………………………………..20
4-3-2 顯性法…………………………………………..21
4-3-3 銅塊量測qmetal………………………………..21
4-3-4 總容量法…………………………………………21
4-4 模與金屬界面熱傳係數之分析…………………22
第五章 結論……… …………………………………….24
參考文獻 …………………………………………………25
附錄A 錫鉛合金之潛熱式推導………………………..56
附錄B 性質表…………………………………………..59
Ho, S. and Pehlke, R. D., “Metal-Mold Interfacial Heat Transfer,”Metallurgical Transacton B, Vol. 16B, pp. 585-594 (1985).
Zeng, X. C., Chiang, R. D. and Chen, T.S., “Analysis of Heat Transfer at Metal-Sand Mold Boundaries and Computer Simulation of Solidfication of a Gray Iron Casting,”AFS Trans.,Vol. 93, pp.275-282 (1985).
Ho, K. and Pehlke R. D., “Transient Methods for Determination of Metal-Mold Interfacial Heat Transfer,” Metallurgical Transacton B, Vol. 17B, pp. 833-844 (1986).
Chiesa, F., “Measurement of the Thermal Conductionce at the Mold/Metal Interface of Permanent Molds,” AFS Trans., Vol. 98, pp. 193-200 (1990).
Hwang, J. C. and Chuang, H. T., “Measurement of Heat Transfer Coefficient at Metal/Mold interface during Casting,” 鑄工期刊, Vol. 20,No.2,pp. 9-15 (1994).
Beck, J.V., "Surface Heat Flux Determination Using an Integral Method," Nucl. Eng. Des., Vol. 7, pp. 170-178 (1968).
Chen, H.T. and Lin, J.Y., “Hybrid Laplace Transform Technique for Nonlinear Transient Problems,” Int. J. Heat Transfer, Vol. 34, pp. 1301-1308 (1991).
Chen, H.T. and Lin, J.Y., “Application of the Hybrid Laplace Transform to Nonlinear Transient Problems,” Appl. Math. Modelling, Vol.15, pp. 144-151 (1991).
Stolz, G. Tr., “Numerical Solution to An Inverse Problem of Heat Condition for Simple Shapes”, ASME Journal of Heat Transfer, Vol. 82, pp. 20-26, Feb. (1960).
Beck J. V., “Calculation of Surface Heat Flux from an Integral Temperature History,” ASME J. Heat Transfer, 62-HT-46 (1962).
Sparrow E. M., Haji-Sheikh, A. and Lundgren, T. S., “The Inverse Problem in Transient Heat Conduction,” J. Appl. Mech., vol. 86e, pp. 369-375 (1964).
Beck, J. V. and Wolf, H., “The Non-lineat Inverse Heat Conduction Problem.” ASME J. Heat Transfer, No. 65-HT-40 (1965).
Beck, J.V., "Nonlinear Estimation Applied to the Nonlinear Inverse Heat
Conduction Problem," International Journal of Heat and Mass Transfer, Vol. 13, pp. 703-716 (1970).
Krutz, G. W., Schoenhals, R. J. and Hore, P. S., “Application of The Finite-Element Method to The Inverse Heat Conduction Problem,” Num. Heat Transfer, Vol. 1, pp. 489-498 (1978).
Beck, J.V., Litkouhi, B., and St. Clair, C.R., "Efficient Sequential Solution of Nonlinear Inverse Heat Conduction Problem," Numerical Heat Transfer, Vol.5, pp. 275-286 (1982).
Tseng A., Chen, T. C., and Zhao, F. Z., “Direct Sensitivity Coefficient Method for Solving Two-Dimensional Inverse Heat Conduction Problems by finite-elementScheme, “Num.Heat Transfer, Part B, Vol.27, pp291-307 (1995).
Bass, B.R., "Application of the Finite Element Method to the Nonlinear Inverse Heat Conduction Problem Using Beck''s Second Method," ASME Journal of Engineering for Industry, Vol. 102, pp. 168-176 (1980)
Chen, H.T. and Chang, S.M., “Application of the Hybrid Method to Inverse Heat Conduction Problems,” Int. J. Heat Mass Transfer, Vol. 33, pp. 621-628 (1990).
D’Souza N., “Numerical Solution of One-dimensional Inverse Transient Heat Conduction by Finite Difference Method,” ASME J. Heat Transfer, No. 75-WA/HT-81 (1975).
Fidelle T. P. and Zinsemeister, G. E., “A Semi-discrete Approximate Solution of The Inverse Problem of Transient Heat Conduction,” ASME J. Heat Transfer, No. 68-WA/HT-26 (1968).
Huang, C.H. and Yan J.Y., “An Inverse Problem in Simultaneously
Measuring Temperature-Dependent Thermal Conductivity and Heat Capacity,” Int. J. Heat Mass Transfer, Vol. 38, No. 18, pp. 3433-3441 (1995).
張文忠, “濕砂模鑄造之凝固分析,”國立中央大學機械所碩士論文 (1996)。
鍾尚浩,“鑄造灌模及凝固解析模式之改良及其相關實驗技術之研究發展”,博士論文,國立成功大學 (1992)。
黃俊誠, “A356鋁合金鑄造過程中界面熱傳係數的量研究,”國立成功大學材料所碩士論文 (1994)。
廖茂奇, “濕砂模鑄造之熱傳分析,”國立成功大學工科所碩士論文 (1996)。
孫憲琪, “濕砂模與鑄件間之熱傳分析,”國立成功大學工科所碩士論文 (1997)。
紀欽仁, “逆向熱傳方法之材料熱性質預測,”國立成功大學工科所碩士論文 (1998)。
郭孟遠, “材料凝固熱性質之估算,”國立成功大學工科所碩士論文 (1999)。
林立勝, “凝固熱性質之估算,”國立成功大學工科所碩士論文 (2000)
李國川, “鑄模與鑄件間之界面熱傳分析,” 國立成功大學工科所碩士論文 (2001)。
廖尹鐸, “金屬鑄件與砂模間界面熱傳係數分析,” 國立成功大學工科所碩士論文 (2002)。
林文和,邱傳聖, “鑄造學,”高立圖書有限公司。pp.75-89.
黃新春, “鑄造學,”文京圖書有限公司。pp.79-121.
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