扁鋼胚連鑄製程中模液面控制系統之動態模擬與分析

Dynamic Simulation and Analysis of Mould Level Control System in Slab Continuous Casting Process

許元良(Y.L. Hsu) ； 林宏達(H.D. Lin) ； 莊福龍(F.L. Chan) ； 陸木榮(M.L. Lu)

《鑛冶：中國鑛冶工程學會會刊》 47卷2期 (2003/06) Pp. 180-186

https://doi.org/10.30069/MM.200306_47(2).0014

摘要

於扁鋼胚的連鑄製程中，銅模內鋼液液面的震盪會影響扁鋼胚的澆鑄品質，因此，為了改善澆鑄製程的穩定性，必需澄清影響模液面波動的主要因素並加以修正。本研究首先建立一影響模液面動態變化的物理模型，其中包括盛鋼桶、鋼液分配器中鋼液的重量，控制鑄嘴開口大小的滑動閥門電控系統，及澆鑄速度與銅模尺寸發生變化等因素。再藉由電腦模擬技術的應用，分析各製程因素影響液面動態變化的模式與程度，並以現場資料確認動態模擬系統的準確性。而建立電腦模擬系統的最大優點，更在於能藉由離線模擬的方式，找出製程參數與控制系統增益的最佳值，減少線上實驗的風險與成本。

關鍵字

動態模擬 ； 動態分析 ； 模液面控制 ； 連鑄製程 ； 扁鋼胚

並列摘要

In continuous casting process, the fluctuation of mould level has great effect on the quality of slab. To improve the stability of continuous casting process, the main factors that evoke the fluctuated mould level should be clarified and improved. In this research, firstly a physical model for dynamic fluctuation of mould level was built, in which the following factors were considered: the weight of molten steel in ladle and tundish, the control system of sliding gate for sub-nozzle control, the variations of casting speed and mould size, etc. Secondly, the influence and the dynamic behavior of those factors were identified in process analysis by means of computer simulation technology, and the simulation results were verified by casting data. And the main advantage of establishing the computer simulation system is that the risk of on-line trials and damages can be avoided, and the optimal process parameters and control system gain can be derived via off-line simulation.

並列關鍵字

Dynamic simulation ； Dynamic analysis ； Mould level control ； Continuous casting process ； Slab