臺灣博碩士論文加值系統

　　在雙金屬料管的感應加熱製程中，其內孔之合金層易因感應功率、溫度、及持溫時間的選用不當，造成大量孔洞缺陷及硬度不足等問題，損及合金層之瑕疵和孔洞缺陷成因與內徑溫度息息相關，加上料管徑向溫度分佈對合金層品質也有直接影響。本文將以數值模擬的方式來進行感應加熱製程溫度的預測並求得料管之加熱製程操作參數，以提供中鋼製程操作參數，並提升金屬料管感應加熱製程的加熱品質。

　　本文研究利用電磁學、熱傳學等相關學理，建立合適的電磁場與溫度場模擬模型，結合數值分析的方法分析雙金屬料管的感應加熱製程中的溫度場變化。討論三種不同尺寸大小金屬料管分別為Pipe A、Pipe B、Pipe C，並輸入對應的操作條件，所得理論分析結果同時與中鋼公司製程中量測之雙金屬料管的外表面溫度及內表面溫度做比較，以驗證數值模擬分析結果之正確性，然後並討論各種參數如輸入電壓、電流頻率、工件的導磁係數、線圈至加熱工件的距離對加熱溫度的影響。

　　For the induction heating process of bi-metallic tubes, the inner tube of alloy-layer is much easier to cause a lot of defects of cavities and insufficient hardness due to the fact that induction power, temperature value and the time frame of temperature retention were chosen improperly. The defects of the alloy-layer depend on the temperature of inner tube. In addition, the alloy-layer quality is corresponded with the temperature distribution in the radial axis of tubes. The paper predicted the temperature distribution with induction heating process numerically to obtain some related process parameters. Some parameters were tested to increase the heating quality of induction heating process of metallic tubes for China Steel Corporation.

　　The study utilized the theorem of electromagnetics and heat transfer to create a proper simulation model for electric-magnetic and temperature field. The variety for the temperature field with the induction heating process for bi-metallic tubes was analyzed numerically. Three different sizes of metallic tubes with Pipe A, Pipe B, Pipe C were discussed, respectively. Then, the supplied corresponding operation conditions and the numerical results were compared with measured data from China Steel Corporation. Finally, the study discussed the influences for the temperature distribution with different parameters such as the input voltage, current frequency, permeability of work piece and the air gap between coil and the work piece.

中文摘要I
英文摘要II
致謝III
目錄IV
表目錄V
圖目錄VI
符號說明IX

一、緒論1
二、理論分析12
三、數值方法30
四、結果與討論42
五、結論71
六、參考文獻72

1.Tudbury, C. A., “Electromagnetics of induction heating”, IEEE Trans. Mag-10, pp. 694-697, 1974.

2.T., W., Preston, “An economic solution for 3D coupled electromagnetic and thermal eddy current problems”, I IEEE Transactions On Magnetics, Vol. 28, No. 2, 1992.

3.Aniserowicz, K., Skorek, A., Cossette, C., and Zaremba, M.B., “A new concept for finite element simulation of induction heating of steel cylinders”, IEEE Transactions On Industry Applications, Vol. 33, No. 4, 1997.

4.Nerg, J., and Partanen, J., “A simplified FEM based calculation model for 3-D induction heating problems using surface impedance formulations”, IEEE Transactions On Magnetics, Vol. 37, No. 5, 2001.

5.Urbanek, P., Skorek, A., and Zaremba, M.B., “Magnetic flux and temperature analysis in induction heated steel cylinder”, IEEE Transactions On Magnetics, Vol. 30, No. 5, 1994.

6.Chaboudez, C., Clain, S., Glardon, R., Rappaz, J., Swierkose, M., Touzani, R., “Numerical modeling of induction heating of long workpieces”, IEEE Transactions On Magnetics, Vol. 30, No. 6, 1994.

7.Bukanin, V.,, Dughiero, F., Lupi, S., Nemkov, V., and Siega, P., “3D-FEM Simulation of transverse-flux induction heaters”, IEEE Transactions On Magnetics, Vol. 31, No. 3, 1995.

8.Sadeghipour K., Dopkin J. A., “Acomputer aided finite element / experimental analysis of induction heating process of steel”, Computers In Industry, Vol. 28, pp. 195-205, 1995.

9.Chaboudez, C., Clain, D., Glardon, R., Mari, D., Rappaz, J., and Swierkosz M., “Numerical modeling in induction heating for axisymmetric geometries”, IEEE Transactions On Magnetics, Vol. 33, No. I , 1997.

10.李育芸，陳夏宗，“ 感應加熱應用於模具表面快速加熱之研究”，私立中原大學機械工程學系碩士論文，1992。

11.Kang, C.G., Seo, P.K., and Jung, H.K., “Numerical analysis by new proposed coil design method in induction heating process for semi-solid forming and its experimental verification with globalization evaluation, Materials Science and Engineering”, A341, pp, 121-138, 2003.

12.Chen S. C., Peng, H. S., Chang, J. A., Jong, W. R., “Simulations and verifications of induction heating on a mold plate”, Int. Comm. Heat Mass Transfer, Vol. 31, No. 7, pp. 971-980, 2004.

13.Wang, Z., Yang, X., Wang, Y., and Yan, W., “Eddy current and temperature field computation in transverse flux induction heating equipment for galvanizing line”, Transactions On Magnetics, Vol. 37, No. 5, 2001.

14.Runde M., Magnusson, N., “Induction heating of
aluminium billets using superconducting coils”, Physica, C 372–376, pp. 1339-1341, 2002.

15.Jang, S.M., Cho, S.K., Lee, S.H., Cho, H.W., and Park, H.C.,“Thermal analysis of induction heating roll with heat pipes”, IEEE Transactions On Magnetics, Vol. 39, NO. 5, 2003.

16.K., Preis, “A contribution to eddy current calculations in plane and axisymmetric multiconductor systems”, IEEE Transactions On Magnetics, Vol. 19, NO. 6, 1983.

17.Ph., Massé, B., Morel, Th. Breville, “A finite element prediction correction scheme for magneto-thermal coupled problem during curie transition”, IEEE Transactions On Magnetics, Vol. 21, NO. 5, 1985.

18.A., Mühlbauer, A., Muižnieks, H.-J., Leßmann, “The calculation of 3D high frequency electromagnetic fields during induction heating using the BEM”, IEEE Transactions On Magnetics, Vol. 29, NO. 2, 1993.

19.CFD-ACE(U),CFD Research Corporation, Alabama, USA,2003.

20.Semiatin, S. L., Stutz, D. E., “Induction heat transfer of steel”, American Society for Metals, 1986.