軋輥變形模式之開發與應用

Development and Application of Roll Deformation Model

胡毓仁(Yhu-Jen Hwu)

《鑛冶：中國鑛冶工程學會會刊》 45卷2期 (2001/06) Pp. 149-158+105

https://doi.org/10.30069/MM.200106_45(2).0013

摘要

近十年來由於下游沖壓業朝高度自動化發展後，不但對鋼帶厚度精度要求日漸嚴苛，同時對鋼帶剖面冠高及平坦度亦提出嚴苛要求。熱軋鋼帶剖面冠高及平坦度的自動控制（Automatic Profile and Shape Control，簡稱APFC）成為目前各大鋼鐵廠所致力發展的技術，其中的核心部份即是軋輥變形的計算。本研究主要依據彈簧與樑理論及傳遞矩陣方法發展出預測軋輥變形模式，具有計算快速，可以在線使用的優點。經實驗軋機實際軋延結果的驗證，本發展模式的預測誤差小於±10 μm以內的達成率超過90%。本模式同時應用於生產線背輥導角（chamfer）效應分析上，證明生產時熱軋鋼帶所產生形狀不良的現象，是由背輥不適當的導角所引發的。

關鍵字

鋼帶熱軋 ； 冠高 ； 平坦度 ； 導角 ； 軋輥變形 ； 彈簧與樑理論

並列摘要

During the past 10 years, the sheet metal forming processes has been fully automated. The quality requirement for the steel strip does not only focus on the accuracy on thickness and width, but also on strip profile and flatness. Hence, the technique of Automatic Profile and Flatness Control (APFC) has been widley developed by steel makers. The roll deformation model is the kernel of APFC. Based on the spring and beam theory as well as matrix transport method, a roll deformation model was developed in this project. With the advantage of saving computing time, this model can be used in on-line calculation. Proved by experimental data which were obtained from laboratory pilot mill, the percentage of the model predicted errors within ± 10 mm is over 90%. A chamfer was machined on the edge bottom backup roll that was used in hot strip mill, to prevent on the accruing of crack from roll edges. This model was used to predict the deformation of roll stack and finally proved that the chamfer on the edge bottom backup roll is the main reason to cause rolling process unstable.

並列關鍵字

Hot rolling of strip ； Crown ； Flatness ； Chamfer ； Roll deformation ； Spring and beam theory