摘要
综合考虑冷带钢轧机现场实际工况条件,根据板形仪在线板形检测原理、受力条件和几何关系,研究带钢横向温差、带钢卷形、边部覆盖,检测辊包角、挠度、安装几何误差和磨损量等因素对在线板形检测精度的影响,与生产实际相结合,建立一套满足工业应用的在线板形信号综合补偿模型。依托该模型开发的在线板形信号综合补偿技术,成功应用于鞍钢1 250 mm六辊冷带钢轧机上,使板形仪在线检测板形信号准确反映冷轧带钢真实板形状况,兼顾后续深加工工艺要求,根据不同轧制条件和产品规格制定动态板形标准曲线,为板形闭环控制提供可靠板形数据,显著提高冷轧带钢产品的板形指标和质量稳定性。总张力计算值与实测值误差在3%以内,板形闭环控制投入后,稳态时板形指标在6 I以内。
Actual working conditions of cold rolling mill are comprehensively considered,and according to the online shape detecting principle,the stress analysis and the geometric relation of the shape meter,influence factors of online shape detecting accuracy such as the transverse temperature difference of strip,the crown of coil,the cover area of strip,the wrapping angle,the flexibility and the installation geometry errors of the detection roll are researched.Combined with the actual production,a set of online shape signal comprehensive compensation models are established to meet the requirements of industrial applications.And the online shape signal comprehensive compensation technology is successfully applied in Angang 1 250 mm 6-high cold strip mill.It ensures that the online detecting shape signal can accurately reflect the true shape status of cold rolling strip.With due consideration to the follow-up processing technology requirements,dynamic flatness standard curves are formulated according to different rolling conditions and product specifications,and reliable shape data are provided for close-loop shape control.Then the shape index and the quality stability of cold rolling strip are improved significantly,the errors between the calculated values and measured values of the total tension are less than 3%,and the shape index in steady state is within 6 I after the input of close-loop shape control.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2011年第12期56-61,共6页
Journal of Mechanical Engineering
基金
河北省自然科学钢铁联合研究基金资助项目(E2011203004)
关键词
冷轧带钢
信号补偿
板形仪
目标曲线
闭环控制
Cold rolling strip Signal compensation Shape meter Target curve Close-loop shape control
