摘要
针对小方坯连铸机结晶器铜管过钢量低的现象,从结晶器系统总成及工艺因素两方面,分析造成铜管使用寿命低的影响因素。通过对结晶器铜管材质、尺寸、锥度和水缝优化,对冷却水水质、水压和流量改进,降低中间包钢水过热度和适当降低拉速等,优化后铜管的平均过钢量达到7 820 t/支,最高达到9 510 t/支;每月非正常停机次数平均降低10次,节省时间180 min,从而降低了生产成本,确保了生产的稳定运行,增加了企业的经济效益。
In view of low steel pass-through amount phenomenon of mould copper tube in small billet continuous-casting, the factors influencing the service life of copper pipe from the mold assembly and process were analyzed. Through optimizing mould copper tube material, size, taper and water slot width, improving the cool water quality, water pressure and the cooling water flow rate and reducing liquid steel superheat in tundish and properly decreasing casting speed, average steel pass-through amount per mould copper tube has been increased to 7 820 t after the optimization, the highest one being 9 510 t per copper tube, and numbers of non-normal casting stop per month has been decreased by 10 times averagely, which saved 180 min. As a result, the production costs has been reduced, the production stability has been ensured and the economic benefit of the enterprise has been increased.
出处
《炼钢》
CAS
北大核心
2016年第2期18-24,共7页
Steelmaking
关键词
方坯连铸
结晶器铜管
使用寿命
设备改进
工艺优化
billet continuous-casting
mould copper tube
service life
equipment improvement
process optimization
