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

总结了轧辊磨损预报模型的研究现状,并绍了典型的磨损预报模型,最展望了冷轧辊研究工作的方。

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

采用扫描电镜、低倍检验、金相检验、力学试验和化学分析等方法，分析了人字齿轮轴发生劈裂的原因。