X80钢级板卷强度的分析与研究

    Analysis and Study on Strength of X80 Steel Strip

    • 摘要: 通过在某钢厂生产的X80钢级板卷不同位置取不同形状的拉伸试样对其强度进行分析与研究, 得出该板卷的强度分布规律为:横向强度≥纵向强度≥30°方向强度;头、中、尾3部分中, 中部强度最高, 头部和尾部强度较低, 具有明显的“倒浴盆效应”。在钢管上与板卷取样的对应位置取样进行包申格效应的分析与研究, 结果表明:X80钢级板卷制成钢管后屈服强度有上升的趋势。

       

      Abstract: The strength of the X80 steel strip as made by a certain steel works is analyzed and studied by means of conducting tensile tests with test samples with different shapes and taken from different locations of the material. The result shows that the strength distribution of the strip is: transversal strength≥longitudinal strength ≥strength at 30° direction, and that among the head section, middle section and the tail section, strength of the middle is the highest, while those of the head and the tail are rather lower, indicating obviously a so-called “ef- fect of up-side-down bathtub”. Also conducted are the analysis and study for the Bauschinger Effect with test samples as taken from the steel tube and in the locations as correspondent to those of the steel strip, resulting in the conclusion that the yield strength of the steel tube as made of the X80 steel strip tends to be higher than that of the material itself.

       

    /

    返回文章
    返回