奥钢联板坯铸机驱动力报警问题的分析及改进
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摘要
浇铸过程中,驱动力报警会导致紧急停浇甚至滞坯事故发生。为防止事故发生,通常采用降速、强冷等措施,但降速造成成本浪费,强冷又产生裂纹等质量缺陷,两者都难以满足生产需要。通过对铸机的各项参数对比分析,找到影响驱动力报警的主要原因为辊缝异常,轻压下模型参数、冷却工艺设置不合理等,通过调整二冷工艺、优化模型参数、加强轻压下区域扇形段辊缝维护,可以达到明显降低驱动力、消除报警的目的,从而保证连铸生产稳定。
During casting,the driving force alarm will cause the emergency stop and even the billet accident.In order to prevent the occurrence of accidents,it usually adopts measures such as slow speed and strong cooling,but the speed reduction can cause cost waste,strong cooling can cause cracks and other quality defects.Both of them are difficult to meet production needs.Based on the comparative analysis of various parameters of the slab caster,the main reasons for the driving force alarm he abnormality of the roll gap,soft reduction model parameters,unreasonable cooling process,etc.By adjusting the secondary cooling technology,optimizing the model parameters and strengthening the fan-shaped section of roll gap maintenance light pressure area,the driving force can be significantly reduced,and to the purpose of eliminating the alarm can be achieved,thereby ensuring the stability of continuous casting.
During casting,the driving force alarm will cause the emergency stop and even the billet accident.In order to prevent the occurrence of accidents,it usually adopts measures such as slow speed and strong cooling,but the speed reduction can cause cost waste,strong cooling can cause cracks and other quality defects.Both of them are difficult to meet production needs.Based on the comparative analysis of various parameters of the slab caster,the main reasons for the driving force alarm he abnormality of the roll gap,soft reduction model parameters,unreasonable cooling process,etc.By adjusting the secondary cooling technology,optimizing the model parameters and strengthening the fan-shaped section of roll gap maintenance light pressure area,the driving force can be significantly reduced,and to the purpose of eliminating the alarm can be achieved,thereby ensuring the stability of continuous casting.
引文
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[3]杨治争,王延峰,饶江平,等.板坯连铸机拉坯滞止原因分析及预防[C]//全国冶金自动化信息网2012年会论文集.南昌:全国冶金自动化信息网,2012:69.
[4]蔡开科.连续铸钢[M].北京:科学出版社,1990.
[5]张学申,杨俊锋.板坯连铸“滞坯”原因分析及改进措施[J].宽厚板,2009,15(1):7.
[6]周宁.影响大板坯连铸机扇形段寿命的原因分析及对策[J].山东冶金,2006,28(6):18.
[7]王新华.含Nb、V、Ti钢连铸坯中碳、氮化物的析出及钢的高温脆性[J].钢铁研究学报,1998,10(6):36.
[8]程常桂,茅洪祥.轻压下技术在连铸中的应用[J].河南冶金,1998(5):25.
[9]陈志平,程乃良,宋景欣.板坯连铸机动态轻压下应用研究[J].梅山科技,2006(1):40.
[10]张茂存,刁承民,郑淑胜.济钢宽厚板坯连铸机的生产实践[J].山东冶金,2006,28(5):24.