In addition,The general macrograph characters of spalling of bonding layer and shallow working lining,and their causes were described.

总结了轧辊报模型的研究现状,并详细介绍了典型的报模型,最展望了冷轧辊研究工作的方向。

The failure of a gear shaft was analyzed by SEM analysis, macrograph, metallographical examination, mechanical test, chemical analysis and etc.

摘要采用扫描电镜、低倍检、检、力学试和化学分析等方法，分析了人字齿轮轴发生劈裂的原因。