The reason of roll fracture has been analyzed by means of chemical composition analysis, macro fractograph, low magnification structure and microstructure examination.
采用化学成分、宏观断口、低倍组织及金相组织等分析方法对轧辊断裂原因进行了分析。
The fracture reason of 45 steel bar during cold drawing was analyzed by chemical inspection, metallographic examination, scanning electron fractograph and electron probe analysis.
采用化学成分分析、金相分析、断口扫描电镜及电子探针分析等手段，对4 5钢棒材冷拔断裂的原因进行了分析研究。
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