铲刃板压力淬火过程的数值模拟与变形分析

Numerical Simulation and Analysis of Deformation Cutting Edge During Pressure Quenching Process

利用弹塑性有限元法数值模拟的基本原理,研究了铲刃板在冷却过程中的数值模拟与变形。以对流换热边界条件为基础,对不同冷却模式下铲刃板进行三维建模,对冷却过程中的温度和变形量进行数值模拟,对得到的温度时间曲线和各方向上的变形量进行对比分析。结果表明在相同冷却条件下,脉冲式压力淬火可以有效控制工件各个方向上的变形,在厚度方向上的变形控制最为显著。此分析结果为该类工件的压力淬火工艺制定及淬火冷却设备的设计提供了理论基础。

Numerical simulation and deformation of the cutting edge in the quenching process were introduced, using the basic principle of elastic-plastic finite element method. 3D model was established for cutting edge plate under different quenching conditions, and based on the convective heat transfer boundary conditions. The temperature and de- formation of cutting edge plate in the process of cooling were numerical simulated and the temperature time curve and deformations of each direction were analyzed. It is concluded that the workpiece deformation in all directions was con- trolled effectively by pulsing pressure quenching, under the same cooling condition, and it had most significant effect of control in thickness direction. The results provided the theoretical basis for designing of pressure quenching process and equipment.