冷轧压下率和退火时间对Ti-IF深冲钢性能的影响

Influences of Cold Rolling Reduction Ratio and Annealing Time on Performances of Ti-IF Deep Drawing Steel

针对冷轧罩式退火厚规格深冲钢冲压性能不稳定现象,借助光学显微镜、X射线衍射仪、拉力试验机等设备,研究了冷轧压下率和退火时间对Ti-IF深冲钢冲压性能的影响。结果表明,提高冷轧压下率、r值和抗拉强度呈增大趋势,n值变化不明显;延长退火时间,r值呈增大趋势,抗拉强度呈减小趋势,n值变化不明显。根据试验结果进行了工艺优化,{111}织构密度增强,产品冲压性能改善明显。

The influences of cold rolling reduction ratio and annealing time on the stamping performance of Ti-IF deep drawing steel are studied by means of such equipment as optical microscope,X-ray diffractometer and tensile tester aiming at the phenomenon that the stamping performance of cold rolled cover annealing thick deep drawing steel is unstable.The results showed that the r value and tensile strength tended to increase and change of n value was not obvious with the increase of cold rolled reduction ratio;r value increased,tensile strength decreased and change of n value was not obvious with the extension of annealing time.The process is optimized according to the test results so that density of{111}texture is enhanced and stamping performance of product is obviously improved.