在建立了单机架可逆冷轧机全干扰耦合模型的基础上,分析影响板形、板厚、张力的控制量和干扰量,提出分步解耦设计策略,相对于常规解耦设计方法可明显简化解耦过程,并给出各解耦环节的简化方案以利于实际工程应用。最后,基于某1 420 mm ...在建立了单机架可逆冷轧机全干扰耦合模型的基础上,分析影响板形、板厚、张力的控制量和干扰量,提出分步解耦设计策略,相对于常规解耦设计方法可明显简化解耦过程,并给出各解耦环节的简化方案以利于实际工程应用。最后,基于某1 420 mm 6辊单机架UCM冷轧机的实际参数,采用Matlab/Simulink工具对简化后的分步解耦系统进行分析,仿真结果表明该方法可有效消除单机架可逆冷轧机轧制过程中板形、板厚和张力控制之间的耦合影响关系,为单机架可逆冷轧机控制系统设计提供了全解耦控制方案,同时为抗干扰设计提供了便利。展开更多
The structure and texture formation for single cold rolling （SCR） with annealing and double cold rolling （DCR） with annealing were investigated based on optical microscope and X-ray diffraction （XRD） with a Nb＋...The structure and texture formation for single cold rolling （SCR） with annealing and double cold rolling （DCR） with annealing were investigated based on optical microscope and X-ray diffraction （XRD） with a Nb＋Ti bearing interstitial free （IF） steel. The results indicated that DCR recrystallization grain was smaller than that of SCR sample and double cold rolling process resulted in better mechanical properties than those resulted from single cold rolling process with the same total reduction conducted. The plastic strain ratio increases from 2.23 for single cold rolling process to 3.2 for double rolling process. The fish-bone structure was observed in all SCR and DCR samples. DCR annealed sample is made up of equiaxed grains of almost uniform size, whereas SCR annealed sample shows a duplex grain structure, consisting of both large and small-sized grains. （Ti＋Nb）C and Fe（Ti＋Nb）P type precipitates were very rarely observed in SCR annealed and DCR annealed steels. The intensity of {111}∥ND for the DCR annealing was higher than that for SCR annealing.展开更多
文摘在建立了单机架可逆冷轧机全干扰耦合模型的基础上,分析影响板形、板厚、张力的控制量和干扰量,提出分步解耦设计策略,相对于常规解耦设计方法可明显简化解耦过程,并给出各解耦环节的简化方案以利于实际工程应用。最后,基于某1 420 mm 6辊单机架UCM冷轧机的实际参数,采用Matlab/Simulink工具对简化后的分步解耦系统进行分析,仿真结果表明该方法可有效消除单机架可逆冷轧机轧制过程中板形、板厚和张力控制之间的耦合影响关系,为单机架可逆冷轧机控制系统设计提供了全解耦控制方案,同时为抗干扰设计提供了便利。
基金Sponsored by National Natural Science Foundation of China(51174020)Fundamental Research Funds for Central Universities of China(FRF-SD-12-010A)
文摘The structure and texture formation for single cold rolling （SCR） with annealing and double cold rolling （DCR） with annealing were investigated based on optical microscope and X-ray diffraction （XRD） with a Nb＋Ti bearing interstitial free （IF） steel. The results indicated that DCR recrystallization grain was smaller than that of SCR sample and double cold rolling process resulted in better mechanical properties than those resulted from single cold rolling process with the same total reduction conducted. The plastic strain ratio increases from 2.23 for single cold rolling process to 3.2 for double rolling process. The fish-bone structure was observed in all SCR and DCR samples. DCR annealed sample is made up of equiaxed grains of almost uniform size, whereas SCR annealed sample shows a duplex grain structure, consisting of both large and small-sized grains. （Ti＋Nb）C and Fe（Ti＋Nb）P type precipitates were very rarely observed in SCR annealed and DCR annealed steels. The intensity of {111}∥ND for the DCR annealing was higher than that for SCR annealing.
