雾化气体淬火过程流场及温度场的数值分析

为了了解淬火过程中淬火设备内流场的分布情况和淬火工件的温度变化情况,用计算机流体力学(CFD)的方法对工件雾化气体淬火过程进行数值分析。在fluent平台上建立雾化气体的二维非稳态模型,模拟了雾化气体淬火设备内流场和工件温度场的分布,以及淬火过程流体类型和流体速度对试件冷却速度的影响,并研究了工件在淬火区内的放置位置对工件冷却曲线的影响。模拟结果与实验结果进行对比分析表明:相同的条件下,工件在淬火区的放置位置不同,淬火效果也不相同。模拟结果为雾化气体淬火工艺的优化提供了有益基础。

Numerical analysis of flow field and temperature field of atomizing gas quenching process

In order to understand the distribution of flow field inside the quenching equipment and the temperature changes of quenching workpiece in the process of quenching,a numerical analysis of atomizing gas quenching process of the workpiece is conducted using computational fluid dynamics(CFD) method.On the Fluent platform,a two-dimensional non-steady-state model of the atomizing gas is built to simulate the distribution of the flow field and the workpiece temperature field in atomization gas quenching equipment,and simulate the impact of fluid type and fluid speed on the cooling rate of workpiece in the quenching process,and also study the impact of the workpiece position in the quenching zone on the cooling curve of the workpiece.Comparison on the simulation results and experimental results shows that the workpiece position in the quenching zone affects the quenching effects under the same conditions.The simulation results provide a useful basis for the optimization of the atomizing gas quenching process.