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提高中薄板坯连铸机中间包寿命实践
Practice of Improving Tundish Life of Medium-thin Slab Caster
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- DOI:
- 作者:
- 刘 鑫，王 帅，赵建平，吴志杰，崔家峰
LIU Xin, WANG Shuai, ZHAO Jianping, WU Zhijie, CUI Jiafeng
- 作者单位:
- 河钢集团 唐钢公司，河北 唐山 063016
Tangshan Iron and Steel Company, Hebei Iron and Steel Group, Tangshan 063016, China
- 关键词:
- 中薄板坯连铸机；中间包；中间包寿命
medium-thin slab caster; tundish; tundish life
- 摘要:
- 对影响中薄板坯连铸机中间包寿命的原因进行了分析。 结果表明，中薄板坯连铸机中间包寿命主要受中间
包耐材侵蚀速率和现场异常状况影响。 采取降低中间包熔渣氧化性、变渣线控制中间包液位、合理选择中间包烘烤制
度、严控大包下渣、优化干式料成分和装包操作，有效防止塞棒松动、提高低碳低硅铝镇静钢的可浇性，可以解决换水口
时板间穿钢等问题，使该铸机中间包寿命由 13 h 提高至 17 h。
The reasons affecting the tundish life of medium-thin slab caster were analyzed. The results show that the tundish life of medium thin slab caster is mainly affected by the corrosion rate of tundish resistant materials and the abnormal condition on site. To reduce the oxidation of molten slag in the tundish, to control the liquid level of the tundish by changing slag line, to choose the baking system of the tundish reasonably, to strictly control the slag from the large tundish, to optimize the composition of dry materials and the operation of ladle loading, effectively prevent the plug rod from loosening and improve the pouring ability of low carbon and low silicon aluminum killed steel, it can solve the problem of steel crossing between plates at the water change port, so that the service life of the tundish of the casting machine is increased from 13 h to 17 h.