关键词: 电工钢, 热轧工艺, 热轧装备, 技术进步

Abstract: 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 1 880 mm, 1　580 mm, 1 780 mm and 1 549 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.

Key words: electrical steel, hot rolling process, hot rolling equipment, technical progress