硅钢连退机组炭套辊结瘤原因分析及改善措施

电工钢 ›› 2020, Vol. 2 ›› Issue (2): 39-44.

硅钢连退机组炭套辊结瘤原因分析及改善措施

杜军，裴英豪，施立发，胡柯

马鞍山钢铁股份有限公司技术中心，安徽马鞍山 241000

出版日期:2020-06-28 发布日期:2020-09-01

Analysis and countermeasures on nodulation of carbon sleeve in continous annealing units

DU Jun，PEI Yinghao，SHI Lifa，HU Ke

Technology Center of Maanshan Iron and Steel Co., Ltd., Maanshan 241000, China

Online:2020-06-28 Published:2020-09-01

摘要/Abstract

摘要： 研究了马鞍山钢铁股份有限公司硅钢连退机组产生的3类典型炭套辊结瘤，结合生产线实际情况分析了结瘤形成原因，结果表明：氢气会对炭套辊造成表面腐蚀形成凹坑，为结瘤提供了附着位置；残油残铁、炉内粉尘、氧化铁皮等是结瘤的组分来源；通过降低退火炉保护气氛中的氢气质量分数至5 %~10 %、监控清洗段电导率、规范生产制度等措施，有效降低了炭套辊结瘤发生。

关键词: 硅钢, 炭套辊结瘤, 连退

Abstract: Three types of nodules, which were found in carbon sleeves of continous annealing units of silicon steel of Maanshan Iron and Steel Co. Ltd., were studied in this paper, and the forming reasons were also analyzed combined with the actual production situation. The results showed that surface corrosion of carbon sleeves by Hydrogen formed pits, which would provide adhesion positions for nodulation, and the formed nodules were mainly compounded with residual oil and iron, furnace dust and iron scale. By reducing the mass fraction of hydrogen to 5 %-10 % in the protective atmosphere of annealing furnace, and monitoring the electric conductivity of the cleaning section, and standardizing the production system and other measures, the nodulation occurrence of carbon sleeves was effectively reduced.

Key words: silicon steel, nodulation of carbon sleeve, continous annealing

杜军, 裴英豪, 施立发, 胡柯. 硅钢连退机组炭套辊结瘤原因分析及改善措施[J]. 电工钢, 2020, 2(2): 39-44.

DU Jun, PEI Yinghao, SHI Lifa, HU Ke. Analysis and countermeasures on nodulation of carbon sleeve in continous annealing units[J]. Electrical Steel, 2020, 2(2): 39-44.

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