针对超高强钢在冷轧过程中厚度波动大以及带头带尾厚度超差的问题,首先根据金属秒流量模型建立了厚度超差预测模型与辊缝调节量预估模型;随后开发了轧制过程中的厚度控制系统,并进行了辊缝调节量优化;最后建立了带钢头尾轧制过程中的轧制速度与张力优化模型.以国内某冷连轧机组的第1机架为技术应用对象,选择两种典型的超高强钢进行生产测试,测试结果表明:超高强钢AR4146E1 与 DU6220A1 的厚度超差长度分别从 70.3 m、36.89 m 下降到 了 16.85 m、16.33 m.
Comprehensive Thickness Control Technology of 1180 MPa Grade Ultra-high Strength Steels in Cold Tandem Rolling
To resolve the issues of thickness variation and thickness deviation at head and tail for ultra-high strength steels in continuous cold tandem rolling,a thickness deviation prediction model and a roll gap adjustment estimation model were established based on the metal mass flow equation firstly.In addition,a thickness control system was exploited,and optimal roll gap adjustment model was established.Finally,an optimization model for rolling speed and tension in the head and tail roll-ing processes of the strip steels was built.The first stand of continues cold tandem rolling unit was taken as the technical application objects to test the two typical ultra-high strength steels.The results demonstrate that the length of thickness deviation for the ultra-high strength steel AR4146E1 and DU6220A1 decreased from 70.3 m and 36.89 m to 16.85 m and 16.33 m respectively.
thickness variationcontrol systemroll gapultra-high strength steelcold tandem rolling
万方数据
维普
