罩退重卷带头印缺陷原因分析及控制措施
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摘要
分析了带头印缺陷产生的原因,并对原因进行筛选,确定了卷取张力、上卷温度、行程开关位置、硬芯卷取以及皮带液压系统压力设置不合理等因素为关键影响因子。将上卷温度控制在45℃以内,开展微套、前3圈不建张、平缓建张等措施改善带头印缺陷,通过一系列攻关试验后制定工艺参数,并通过批量试验不断优化并固化工艺参数,带头印缺陷平均长度由88.7降至34.2m,带头印缺陷明显降低。
The causes of the headprint defect were analyzed and filtered,and the coiling tension,coil temperature,limit switch position,hard core coiling process,presetting pressure of the belt hydraulic system were determined to bekey factors.By controlling the coil temperature within 45 ℃,carrying out micro-loop,unbuilding tension in the first 3 laps,smoothly building tension to improve head print defects,developing process parameters through a series of tack tests,continuously optimizing and solidifying process parameters through batch tests,the average length of the head print defect was reduced from 88.7 to 34.2 m,and the lead print defect decreased significantly.
The causes of the headprint defect were analyzed and filtered,and the coiling tension,coil temperature,limit switch position,hard core coiling process,presetting pressure of the belt hydraulic system were determined to bekey factors.By controlling the coil temperature within 45 ℃,carrying out micro-loop,unbuilding tension in the first 3 laps,smoothly building tension to improve head print defects,developing process parameters through a series of tack tests,continuously optimizing and solidifying process parameters through batch tests,the average length of the head print defect was reduced from 88.7 to 34.2 m,and the lead print defect decreased significantly.
引文
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[3]陈玉鑫,朱国森,王莉,等.FD级镀锌钢卷的表面质量控制[J].中国冶金,2016,26(6):28.
[4]李向奎,张丙龙,陈玉鑫,等.冷轧板表面夹杂缺陷成因及控制[J].中国冶金,2015,25(12):54.
[5]乐可襄,许俊贻.65Mn冷轧带钢表面缺陷分析[J].钢铁研究学报,2003,15(1):15.
[6]窦刚,郭振文.预防带钢表面缺陷的冷轧重卷机组优化设计[J].轧钢,2011,28(6):29.
[7]周国盈.带钢卷取设备[M].北京:冶金工业出版社,1982.
[8]钟声.冷轧薄板表面缺陷产生原因综述[J].四川冶金,2007,29(3):23.
[9]冯连强.一种运动中带头和软钳口定位控制方法[J].重型机械,2010(6):13.
[10]崔文彬,吴桂涛,孙培廷,等.基于FMEA和模糊综合评判的船舶安全评估[J].哈尔滨工程大学学报,2007,28(3):262.