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采用金相检验、力学性能测定等方法,对断裂花篮螺杆进行了分析。结果表明,材质不良——晶粒粗大、铁素体沿晶界呈网状分布是导致螺杆断裂的主要原因。
Using the method of metallographic examination and mechanical property measurement, the screw bolt of the broken flower basket was analyzed. The results show that the material is bad - coarse grains, ferrite distribution along the grain boundaries are the main cause of the screw fracture.