跳到主要內容

臺灣博碩士論文加值系統

(35.153.100.128) 您好!臺灣時間:2022/01/19 03:46
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

: 
twitterline
研究生:廖尹鐸
研究生(外文):Yi-To Liao
論文名稱:金屬鑄件與砂模間界面熱傳係數之分析
論文名稱(外文):The Analysis of Heat-Transfer Coefficient At The InterfaceBetween Casting And Sand Mold
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:2002
畢業學年度:90
語文別:中文
論文頁數:61
中文關鍵詞:等效熱傳係數界面熱阻界面熱傳係數
外文關鍵詞:Heat Transfer Coefficient
相關次數:
  • 被引用被引用:3
  • 點閱點閱:520
  • 評分評分:
  • 下載下載:138
  • 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的分析中,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。最簡單的界面條件是假設模與(模穴中的)金屬是緊密接觸,即溫度與熱通量在此界面是連續的。但此項假設與真實情況會有所差異,而實際上是需要一界面熱阻或等效熱傳係數(h)來連接模與金屬兩邊的熱通量。同時此界面熱傳係數之獲得對模式研究者是非常重要的。
  本研究針對濕砂模的鑄造,使用鋁、錫及鋅作為鑄造材料,以不同大小之圓柱體與矩形體作為鑄件模型,用熱電偶量測出凝固過程溫度場的變化情形,採用反算法求出金屬/砂模間界面之金屬溫度,進而求出傳出金屬界面之熱通量與等效熱傳係數。
  本研究對於濕砂模與鑄件間之等效熱傳係數,已完成初步的研討工作,所得的成果可以作為日後更進一步研究及實際套裝軟體應用的基礎。 
  In the heat-transfer analysis of a casting process, how to handle the heat transfer condition at the mold/metal interface is a key problem. If it is not manipulated properly, that will directly affect the final result of analysis. The simplest one is to assume that it is perfect contact at the interface (i.e., the temperature and the heat flux are continuous there). However, this deviates from the real condition and it needs a heat resistance or an effective heat transfer coefficient to connect the heat fluxes from both sides of the interface. To find the effective heat transfer coefficient is very important to the analyzer of casting processes.
  This research, emphasizes on the castinng of sand mold, with the casting materials of aluminum, tin, and zinc, to produce casting model by different sizes of cylinder and rectangle. Also, to examine the temperature situation of the solidification process by thermal couple, and to count the metal temperature of the interface between metal and sand mold, in order to calculate the heat flux and effective heat transfer coefficient of the metal interface.
  This research has finished the initial study of the effective heat transfer coefficient between sand mold and casting. The result can be the basics of the further research, and the application of package software in the future.
摘要 I
Abstract II
致謝 III
目錄 IV
圖目錄 VI
表與照片目錄 IX
符號說明 X
第一章 緒論 1
第二章 熱傳分析 6
  2-1 前言 6
  2-2 界面熱阻分析 6
  2-3金屬熱傳分析 8
    2-3-1 金屬潛熱釋放效應 8
    2-3-2 數學方法 9
    2-3-3逆運算模式 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 15
    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布的方法 16
    3-3-3合模與澆鑄 17
  3-4 實驗數據整理及計算 17
第四章 結果與討論 18
  4-1 鑄件凝固過程之縮孔問題 18
  4-2反算模式的選擇 19
  4-3 鑄件中的溫度量測 21
  4-4 砂模及金屬介面之熱傳量及等效熱傳係數的估算 23
第五章 結論 26
參考文獻 28
附錄 60    
參考文獻
Beck J. V., “Calculation of Surface Heat Flux from an Integral Temperature History,” ASME J. Heat Transfer, 62-HT-46(1962).

Beck, J.V., "Surface Heat Flux Determination Using an Integral Method," Nucl. Eng. Des., Vol. 7, pp. 170-178(1968).

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).

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).

Beck, J. V. and Wolf, H., “The Non-lineat Inverse Heat Conduction Problem.” ASME J. Heat Transfer, No. 65-HT-40(1965).

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).

Ho, S. and Pehlke, R. D., “Metal-Mold Interfacial Heat Transfer,” Metallurgical Transacton B, Vol. 16B, pp. 585-594(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).

Hou, T. X. and Pehlke, R. D., “Determination of Mold-Metal Interfical Heat Transfer and Simulation of Solidification of Aluminum-13% Silicon Cast,”AFS Trans.,Vol 94, pp. 129-136(1986).
Krzysztof, G., Cialkowski, M. J. and Kaminski, H., “An Inverse Temperature Field Problem of The Theory of Thermal Stresses,” Nucl. Eng. Des., Vol. 64, pp. 169-184, (1981).

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).

Kubo, K. and Pehlke, R. D., “Heat and Mooisture Transfer in Sand Molds Containing Water,” Metallurgical Transacton B, Vol. 17B, pp. 903-911(1986).

Nishida, Y. and Droste, W. and Engler, S., “The Air-Gap Formation Process at the Casting Mold Interface and the Heat TransferMechanism through the Gap,” Metallurgical Transacton B, Vol. 17B, pp. 833-844(1986).

Shumakov, N. V., “A Method for the Experimental Study of the Process. of Heating a Solid body,” soviet Physics-Technical Physics (Translated by Institute of Physics), Vol. 2, pp. 771, (1957).

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).

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).

Shin, T. S., Hsiau, S. S. and Hong, C. H., “Movement of Voporization Interface and Temperature Distributions in Green Sand Molds,”AFS Trans., Vol. 104, pp. 258-273(1996).

Tsia, H. L. and Chiang, K. C. and Chen, T. S., “Movement of Moisture Front and Alloy Solidification in Green sand Casting,”AFS Trans.,Vol. 96, pp.191-196(1988).

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).

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)。

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)。
連結至畢業學校之論文網頁點我開啟連結
註: 此連結為研究生畢業學校所提供,不一定有電子全文可供下載,若連結有誤,請點選上方之〝勘誤回報〞功能,我們會盡快修正,謝謝!
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top