EFFECT OF COLD ROLLED REDUCTION RATIO ON DEEP-DRAWING PROPERTIES OF LOW CARBON Al-KILLED AND COLD ROLLED STEEL SHEET
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摘要: 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。Abstract: Effect of various reduction ratios on deep-drawing properties of cold rolled steel sheet has been investigated in laboratory with low carbon Al-killed and hot-rolled coils produced in Pangang hot rolled mill. It is concluded that cold rolled reduction ratio has no obvious effect on the conventional mechanical properties and n-value but effective effect upon r-value. For the low carbon Al-killed steel with 0.059% carbon,the maximum r-value is achieved at the reduction ratio of 73% and Δr -value is monotonously reduced with the increment of cold rolling reduction ratio.
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