由於鋼鐵產業都是高耗能、高汙染，同時不論是在生產或是維護方面都是高成本的產業類別，因此在如何降低成本的議題上有不少的專家學者提出了許多問題並進行探討，也取得了很多有效的成果；而本研究所提出的問題為以數值方法分析熱軋加熱爐在軋延狀態下枕塊之物性變化：藉由數值模擬驗證中鴻公司之加熱爐枕塊的變形模式，並模擬在不同材質、配置以及高層的交互條件下之變形差異與應力分布，而後探討造成結果差異的原因為何。

根據中鴻公司熱軋加熱爐的現場枕塊配置(偏離中心、KHR40CM、高層100mm)使用狀況與利用數值模擬分析的結果進行比較後發現分析所得到的變形模式與現場變形狀況是相符合的。經過數值模擬後發現若處於1200℃的軋延條件下，包含材料本身的物理特性在內的所有參數條件中線膨脹係數對於變形量的影響非常顯著因此在選擇材料時應考慮材料的線膨脹係數。

以維護角度來說，若要降低維修與更換枕塊的金額和頻率，在枕塊的配置選擇上應使用變形量最小的枕塊，亦即為材質選用KNC01、高層100mm的配置，至於配置方法的選擇則是因為置於中心與偏離中心兩種配置方法的變形量差異並不大，因此應使用置於中心線的配置方法以減少現場備品的配額、採購的金額以及施工的成本，另外相對於其他高度的高層亦可以降低爐門開啟時的熱損失。

關鍵字：加熱爐、枕塊、數值模擬

SUMMARY

Since the steel industry in the production or maintenance belongs to costly industry category, how to reduce the cost is very important. In the study, the numerical simulation is used to verify the elastic deformation mode of Chung Hung Company's furnace skid. The deformation difference and stress distributions are analyzed under the interaction conditions of different materials, configuations and high levels of pass line. The reasons of the resulting differences are explored and the configuration condition of minimal deformation is found from the study results, which could help to reduce the production and maintenace cost.

Key word : Furnace, Skid, Numerical Analysis.

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