热轧强力卷筒芯轴断裂原因分析及改进

Cause analysis and reformation of mandrel fracture of hot-rolled high-strength reel

热轧强力卷取机卷筒用于卷取高强度带钢,卷筒在使用过程中发生多起芯轴断裂故障,根据芯轴断口形貌特征并基于NX Nastran对芯轴强度进行有限元分析,确定了芯轴断裂形式为疲劳断裂,通过对芯轴材料和结构进行针对性的改进,较大的提升了芯轴使用寿命。

The hot-rolled high-strength coiler reel is used to reel high-strength strip steel.Many mandrel fracture failures occurred during the use of the reel.According to the morphological characteristics of the mandrel fracture and finite element analysis of mandrel strength based on NX Nastranto determine that the mandrel fracture form was fatigue fracture,and the service life of mandrel is greatly improved by improving the material and structure of the mandrel.