采用攀钢热轧板厂生产的低碳铝镇静钢热轧卷 ,在实验室进行了不同压下率对冷轧钢板深冲性能的影响试验。结果表明 ,冷轧压下率对常规力学性能和n值无明显影响 ,而对r值影响显著。对于含碳量 0 0 59%的低碳铝镇静钢 ,获得最大 r值的冷轧压下率为 73% ,而Δr值随冷轧压下率的提高单调减小。 Using low carbon aluminum killed steel HRC produced by Panzhihua Iron and Steel Co., Ltd., experiments were carried out in laboratory to test the deep drawing performance of cold-rolled steel with different reduction rates. The results show that the cold rolling reduction has no obvious effect on the mechanical properties and the n value, but has a significant effect on the r value. For the low-carbon aluminum-killed steel with 0 0 59% carbon content, the maximum r value is 73% of the cold rolling reduction, while the Δr value decreases monotonically with the decreasing of cold rolling reduction.