不锈钢管坯热扩孔用剪切环形状研究

Research on the Shape of Shearing Ring Used in Thermal Expansion Process of Stainless Steel Tube

采用有限元模拟和实际生产试验相结合的研究方法对60MN热挤压生产线的热扩孔变形工艺进行了研究,重点对热扩孔工艺中的剪切环能否顺利剪断扩孔后的余料进行分析。设计了3种不同形状的剪切环并对热扩孔过程进行了模拟分析,模拟结果认为J3剪切环有利于热扩孔余料的剪断并且承受轴向和径向载荷最小,对改进热扩孔生产工艺具有指导意义。

Finite element simulation and actual production test are used to study the thermal expansion during deformation process of the 60MN hot extrusion production line.Whether the accumulation metal can be cut by shearing ring successfully in the thermal expansion process is analyzed importantly.Three different kinds of shearing rings are designed and the corresponding expansion progresses are simulated.The simulation results show that the J3 shear ring is beneficial to cut accumulation metal,the axial and radial loads are smallest.It is significant to improve the thermal expansion process.