The results show the strength of the tested steels was increased and hole expanding ratio was decreased with the decrease of final rolling temperature or coiling temperature.
试验结果表明，随着终轧温度或卷取温度的降低，试验钢强度提高，而扩孔性能降低。
The results show the strength of the tested steels was increased and hole expanding ratio was decreased with the decrease of final rolling temperature or coiling temperature.
试验结果表明，随着终轧温度或卷取温度的降低，试验钢强度提高，而扩孔性能降低。
应用推荐