1.前言球化退火是T10A冷轧窄带钢生产的重要工序,目前国内多数厂家仍采用罩式炉进行退火。由于罩式炉本身电阻丝功率的分配问题,炉膛内不同部位存在着一定的温差,加上装炉量较大,因此,即使带卷的轧制规程和热处理工艺相同,其组织和性能也不尽相同,而且有时同一炉带卷的组织性能差别较大,以至部分带卷冷加工硬化现象不能消除,导致在轧制中产生碎边和断裂现象,严 1. Introduction Spheroidizing annealing is an important process of T10A cold-rolled narrow-strip steel production. At present, most domestic manufacturers still adopt the hood-type furnace for annealing. Due to the distribution of resistive wire power in the hood furnace, there is a certain temperature difference in different parts of the furnace, and the loading capacity is relatively large. Therefore, even though the rolling schedule and the heat treatment process of the coil furnace are the same, the organization and performance are not enough The same, and sometimes the same coil with a large difference in the organization and performance, as well as some of the coil with cold work hardening can not be eliminated, resulting in rolling in the edge and broken phenomenon, strict