【作者】 王志坚； 王贺权； 徐成海；

【Author】 WANG Zhi-jian~1 WANG He-quan~1 XU Cheng-hai~2 (1.School of Mechatronics Engineering,Shenyang Institute of Aeronautical Engineering,Shenyang 110136,Liaoning Province,China;2.Department of Mechanical Engineering and Automatization,Northeastern University,Shenyang 110006,Liaoning Province,China)

【机构】 沈阳航空工业学院机电工程学院； 东北大学机械工程及自动化学院；

【摘要】 高压气淬是利用高压高速流动的气体对工件进行淬火的一种热处理技术。本文采用有限体积法对真空高压气淬炉中复杂的气固耦合流动传热过程进行了数值模拟计算。运用FLUENT软件模拟得到了气体的流场分布和工件温度场分布。流场分布表明在炉腔四周出现了高涡流区,气体在此滞留时间较长,对料筐边缘的工件冷却不利。工件温度场分布表明主要受炉腔内气体流场的影响。最后,对模拟结果和实验结果进行对比,对比表明实验冷却时间比模拟时间长,误差在7.9%。更多还原

【Abstract】 High-pressure gas quenching is the heat treatment technology which quenches the workpieces by use of high-pressure and high-speed flow gas.In this paper,finite volume method is adopted to numerically simulate the complex gas-solid coupling flow and heat transfer in the vacuum high-pressure gas quenching vacuum.By FLUENT software simulation,the gas flow field distribution and the workpieces temperature distribution are attained.The flow field distribution indicates that in the corner of furnace large whirling current appears and gas resorts for a long time,which is disadvantageous to cool the workpieces here.The workpieces temperature distribution shows that the temperature field of workpieces is mainly affected by the gas flow field. Finally the simulated results are contrasted with actual ones.It shows that the experimental time is longer than simulative time and the error is 7.9%.更多还原