论文部分内容阅读
针对冷轧生产过程中存在的轧件轧制力偏大问题,对冷轧基料的显微组织和力学性能进行了分析,并提出了退火工艺。结果表明,采用厚坯工艺生产的冷轧基料的晶粒尺寸较为粗大,采用中薄坯工艺生产的冷轧基料的晶粒尺寸约为20μm,采用薄板坯工艺生产的冷轧基料的晶粒尺寸小于20μm。随着轧制原料厚度的减小,轧件的强度升高、硬度增加。对不同工艺制备的冷轧基料进行退火后,其晶粒明显长大,尤其是采用薄板坯工艺制备的冷轧基料,晶粒尺寸基本为20μm,可满足冷轧基料的要求。
In view of the large rolling force of rolling material existing in the cold rolling process, the microstructure and mechanical properties of the cold rolled base material are analyzed and the annealing process is proposed. The results show that the grain size of the cold-rolled base material produced by the thick slab process is relatively coarse, the cold-rolled base material produced by the middle-thin slab process has a grain size of about 20 μm, and the cold-rolled base material produced by the thin slab process The grain size is less than 20μm. As the thickness of the rolled stock decreases, the strength of the rolled stock increases and the hardness increases. After annealing the cold-rolled base material prepared by different processes, the crystal grains grow obviously, especially the cold-rolled base material prepared by the thin slab process has a grain size of about 20 μm, which can meet the requirements of the cold-rolled base material.