共查询到19条相似文献,搜索用时 218 毫秒
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六辊双机架平整机在投产初期,铁粉缺陷无法自动消除,其产生的主要原因为空气中流动的粉尘和轧辊上面粘附的铁粉压入带钢表面形成的,通过在机架出入口增加吸尘、采用波纹软管降低吸尘口振动、增加抛光器等措施,使得风管流速达到了25 m/s,铁粉斑封闭率降低了4.11%,机组速度从400 m/min提高到了600 m/min。 相似文献
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就酒钢1800五机架六辊冷连轧机组工艺方案的确定、主要工艺参数的选择和关键设备的选型做了详细的阐述和对比,针对冷连轧机组和双机架可逆连轧机两种工艺方案、五机架六辊和四机架六辊两种设备配置方式。经多方面分析论证,最终得出结论:五机架六辊冷连轧机组是酒钢1800冷连轧机组的最优选择。 相似文献
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针对宝钢某冷连轧机组在生产高端产品过程中采用CVC系列机型时由于辊间点接触造成局部辊间压力 过大、磨损不均匀影响产品板形与表面质量的问题,在对冷轧机组的主流机型及其优缺点进行简单分析的基础上, 经过大量的现场试验与理论分析,结合某冷连轧机组设备与工艺特点,充分吸取德系CVC机型与日系HC机型的 优点,提出了上游机架仍然保持现有的CVC系列不变以充分利用其强大的板形板凸度及边降控制能力、而末机架 工作辊与支撑辊保持平辊不变、中间辊中部采用平辊以及边部采用优化辊型的改造策略,经过现场试验效果良好, 可以有效地改善高端产品的板形与表面质量、降低辊耗。 相似文献
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The thermal scratch significantly influences the surface quality of the cold rolled stainless steel strip.In order to establish a precise mathematical model of oil film thickness in deformation zone,the lubrication in cold rolling process of B443 NT stainless steel strip was studied in the laboratory.According to the principle of statistics,a mathematical model of critical oil film thickness in deformation zone for thermal scratch was built,with fitting and regression analytical method,and then based on temperature comparison method,the criterion for deciding thermal scratch defect was put forward.Storing and calling data through SQL Server 2005,a software on thermal scratch control was developed in the Microsoft Visual Studio 2008 environment by MFC technique for stainless steel in tandem cold rolling,and then it was used into the practical production.Statistical results demonstrated that the hit rate of thermal scratch arrives at 91.47%,the occurrence rate of thermal scratch is decreased by 87.81%,and rolling speed is increased by 7.3%.The developed software is of significance to the control of products quality of stainless steel strips,and the analysis and solution to the problem of thermal scratch defects in tandem cold rolling. 相似文献
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为提高冷轧带钢板形检测精度,研制出一种新型的冷轧带钢板形仪——整辊镶块智能型板形仪。该板形仪提出与国际上流行的分段式检测辊不同的结构形式,研制了整辊镶块式检测辊,以避免传统检测辊辊片之间由于热膨胀不同对带钢表面造成的划伤;提出与国际上流行的干式集流环不同的信号集流传输方式,研制了喷淋湿式集流环,以提高检测精度和使用寿命;提出与国际上流行的采集卡形式不同的信号处理方式,研制了嵌入式DSP板形信号处理硬件系统,以提高检测精度和抗干扰能力;研发了具有误差补偿、模式识别、目标板形制定和闭环控制计算功能的板形信号处理软件系统,以实现板形仪的智能化。该板形仪经在鞍钢1250mm冷轧机上实际工业考验证明,测量信号稳定可靠,而且实现了板形闭环控制。 相似文献
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《Baosteel Technical Research》2010,(Z1):112
The entire roller inlayed block intelligence cold strip shape meter is developed successfully in this paper,which can stably work chronically in the cold rolling workshop,the independent innovation of the key technology of cold strip shape measuring,the foreign technical monopoly and blockade are broken through.The structural form which is different from the international popular segmented detection roller is put forward,the entire detection roller inlayed block is developed,a group of elastic blocks in that the sense organs are installed are inlayed in the radial symmetry rectangular grooves of the detection roller body,the entire roller structure is composed of elastic pieces and the roller body,the scratch of the strip surface due to different thermal expansion of the traditional detection roller measuring unit is avoided effectively.The signal transmission form which is different form the international popular dry slip ring is put forward,the spray wet slip ring is developed,slip ring and detection roller can be taken down and installed as possibly as fast,so the maintain is convenient,while through the section auto-spray cleaning,lubrication and cooling, the service life is remarkable improved and the outside interference signal is reduced.The signal processing form which is different form the international popular gathering card is put forward,the embedded DSP shape signal processing hardware system is developed,the electromagnet,temperature,humidity and vibration’s interference of industry practice to shape transmission signal can be effectively avoided,which can guarantee the instantaneity and measured precision of shape measured signal.The shape signal processing software system whose function contains error compensation,pattern recognition,establishment of the target shape and the closed-loop control calculation is built,the shape meter’ computer human interaction is friendly,and function of shape meter is strong,at the same time the intellectualized level of the shape meter is improved.Now,this shape meter has been successfully applied on the 1 250 mm cold strip mill of Angang Steel Company Limited,the long-term operating testing is done,every guide line achieves the anticipative effect,the measuring precision is high and the measuring signal is stable and reliable,the shape meter is tested on high speed,big tension,changed wrap angle and big depressed complicated working conditions,any scratch of the detection roller surface and the strip surface is not appearing,it can completely adapt well to the industrial production environment,reaching the international advanced level. 相似文献
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