High-precision coiling temperature control model for heavy gauge strip steel
-
摘要: 卷取溫度是影響帶鋼組織性能的重要工藝參數.在生產實踐中,如何提高厚規格帶鋼卷取溫度的控制精度是一個難點.針對厚規格帶鋼在層流冷卻過程中的工況特點,提出了溫度場計算模型和對流換熱系數模型的改進方法,并開發了一種全新的基于相似策略的自適應模型,以改善卷取溫度前饋控制效果.經現場應用證明,本文提出的方案能有效提高厚規格帶鋼的卷取溫度控制精度,其中厚度大于12 mm的帶鋼平均命中率可達到94.9%.Abstract: The process parameter of coiling temperature is the most critical factor to determine the final mechanical properties of strip steel. In the production practice, it is difficult to improve the coiling temperature accuracy of heavy gauge strip steel. Based on the condition characteristics of the laminar cooling process of heavy gauge strip steel, improvement methods were proposed for the temperature field calculating model and the heat transfer coefficient model, and a new similarity-based adaptation model was developed to improve the feed forward control effect of coiling temperature. Field applications prove that the proposed scheme can effectively improve the coiling temperature accuracy of heavy gauge strip steel, and the average hitting rate is about 94.9% for the strips with a thickness more than 12 mm.
-
Key words:
- strip steel /
- hot rolling /
- temperature control /
- control models /
- finite difference method /
- self-adaptation
-

計量
- 文章訪問數: 188
- HTML全文瀏覽量: 43
- PDF下載量: 11
- 被引次數: 0