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薄钢壳回转体轴向磁化状态分析

Keywords: 结构钢厚板, 低温, 冲击试验, 韧脆转变温度, 中心偏析

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Abstract:

随着结构钢厚板的厚度的增大,其韧性性能会变差,特别是在低温环境中更加明显,针对该问题进行了钢厚板冲击韧性的深入研究。对60~150mm厚的钢板进行了低温下的冲击韧性试验,并且利用Boltzmann函数对试验结果进行拟合分析,得到不同试验条件下的韧脆转变温度及其变化规律。结果显示:钢厚板的冲击韧性随温度降低,板厚增大以及沿板厚度方向由表面到中心的位置变化而降低;结构钢厚板脆性特征明显,要引起足够重视。

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