我国电工钢热轧工艺装备及技术进步

Hot rolling equipments and technical progress for electrical steel in China

电工钢的晶粒取向、晶粒大小及板形等因素与生产工艺密切相关,进而影响成品磁性能和表观质量,在铸坯成分和组织稳定后,热轧工艺对成品磁性能和表观质量起着重要作用,而热轧装备则可以保证热轧工艺的实施。本文介绍了国内主要电工钢生产企业热轧工艺装备及技术进步,对1580 mm、1880 mm、1780 mm及1549 mm热轧线的工艺流程、设备特点及主要技术参数进行了对比和归纳,为电工钢热轧生产线的设计和改造提供重要参考。

The grain orientation,grain size and shape of electrical steel are closely related to the production processes,and then affect the magnetic properties and surface quality of finished products.After the composition and microstructures of the billet are determined,hot rolling process plays an important role in the magnetic properties and surface quality of finished products,and hot rolling equipments can ensure the implementation of hot rolling processes.In this paper,the hot rolling process equipment and technical progress of main electrical steel enterprises in China were introduced.The process flow,equipment characteristics and main technical parameters of 1880 mm,1580 mm,1780 mm and 1549 mm hot rolling lines were compared and summarized,which provides an important reference for the design and transformation of electrical steel hot rolling production line.