An Mathematical Model of Flow Stress for Hot Strip Mill
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摘要: 采用恒應變速率凸輪塑性計,對生產現場所采集的9個碳鋼的實體樣本進行壓縮試驗,測定了熱軋條件下的流動應力。選用了7種不同結構型式的流動應力數學模型,對試驗數據做了回歸分析,得到了較全面反映碳鋼中主要化學元素和諸變形條件對流動應力影響的數學模型,此模型的結構優于現有模型,已用于生產的在線控制,效果良好。Abstract: Compress experiments on 5139 samples of nine grades of carbon steel which were collected from 1700 hot strip mill in WISC were made by a cam plastometer with constant strain rate, the flow stresses of carbon steels measured. Seven appropriate types of flow stress mathematical models were chosen to make regression analyses of these experimental data. A new - mathematical model was obtained in wfich the influences of main chemical elements in carbon steel and deformation conditions were fully considered. The structure and effect of new mathematical model are better than that of being used and it has been successfully used for on-line production control of 1700 hot strip mill in WISC.
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Key words:
- flow stress /
- resistance to deformation /
- flow stress mathematical model
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