層流冷卻改造與雙相鋼開發

The Revamp Project on Laminar Flow System for Dual Phase steel

張福祥(F.H. Chang) ； 楊嘉靖(C.C. Yang) ； 李明峰(M.F. Lee) ； 康國峰(K.F. Kang)

《鑛冶：中國鑛冶工程學會會刊》 51卷1期 (2007/03) Pp. 80-87

https://doi.org/10.30069/MM.200703_51(1).0008

摘要

中鋼第一熱軋鋼帶工場為順利生產雙相鋼，於2004年12月底30天歲修停機時間內成功改造層流冷卻設備及輸送輥台。新舊控制系統於停機前並行運轉3個月先行做“預調機”，以降低新設備及新控制對產品之機性衝擊。層流冷卻改造之工程部份包括；所有輸送輥台之土木基礎改造，加裝強力冷卻裝置及一般冷卻裝置，流量計、水溫計、中間溫度計、水位計皆於此次改造中予以考慮。程控部份則採用有限差分法做熱傳遞之溫控計算及控制。並考慮材料變態行為、輻射熱傳、對流熱傳及傳導熱傳、速度及水溫對熱傳之影響。不同之噴水模式之影響、上下噴頭對控制之影響及不同之回饋邏輯皆於調機期間予以測試。雙相鋼在特殊之噴水模式及控制邏輯下進行不同之機性影響測試，並已成功滿足客戶之各種測試要求。

關鍵字

層流冷卻 ； 雙相鋼

並列摘要

No. 1 HSM of China steel revamped run out table and laminar flow system successfully within 30 days' shutdown at the end of 2004 for the purpose of producing Dual Phase Steel. New CTC (coiling temperature control) system, which uses Finite Difference Model (FDM) with phase transformation consideration, was parallel running with old table style model, which stored in Alpha system, around 3 months successfully to reduce the tuning effect with the rolling mill. All run out table were replaced with all foundation modification. Intensive spray banks and fine banks are installed during the 30 days' shutdown. Flow meter, water temperature sensor, intermediate pyrometer, flow level sensor are considered in the design stage. The phase transformation heat, radiation heat transfer, convection heat transfer, conduction heat transfer, speed and water temperature effects are considered at the finite difference control model. Different spray patterns effect, top and bottom spray effect, different feedback logics were tested during the tuning stage. Dual phase steel was producing successfully with special spray pattern and control logic and already passed the customer's entire mechanical test.

並列關鍵字

laminar flow system ； dual phase steel