45钢圆柱体浸没式淬火冷却过程的数值模拟和实验研究  

Numerical Simulation and Experimental Study on Cooling Process of 45 Steel Cylinders Immersion Quenching

作　　者：王成豪 苏新军[1] 晁颖 WANG Chenghao;SU Xinjun;CHAO Ying(Tianjin Key Laboratory of Refrigeration Technology,Tianjin University of Commerce,Tianjin 300134,China)

机构地区：[1]天津商业大学天津市制冷技术重点实验室,天津300134

出　　处：《热加工工艺》2022年第22期137-141,共5页Hot Working Technology

基　　金：国家自然科学基金资助项目(51176142)。

摘　　要：使用商业软件AVL-FIRE对45钢圆柱体浸没式淬火过程进行了数值模拟和实验研究。实验过程中淬火工件为钢圆柱体,以水作为淬火介质。基于淬火工质和工件表面热流密度相等的原则,通过ACCI的方法耦合求解工件的温度场。采用多项式拟合的方法将工件的热物性参数设置为与温度变化相关的参数,并将模拟结果与热物性为常数的数值模拟结果进行对比。结果表明,引入随温度变化的工件热物性的数值模拟计算的结果与实验数据吻合良好,更接近实际实验所测数据,模拟得到的温度场可以用于热应力分析,指导实际生产。Commercial software AVL-FIRE was used to simulate and experiment the immersion quenching process of steel cylinder. The quenched workpiece was a steel cylinder and water was used as quenching medium. Based on the principle of equal heat flux between quenched working fluid and workpiece surface, the temperature field of workpiece was solved by ACCI method. The thermal property parameters of the workpiece were set to the parameters related to the temperature change by polynomial fitting method, and the simulation results were compared with the numerical simulation results with the thermal property constant. The results show that the numerical simulation results of the thermal properties of the workpiece with temperature change are in good agreement with the experimental data and are closer to the actual experimental data. The simulated temperature field can be used for thermal stress analysis and guide the actual production.

关 键 词：45钢 热物性 数值模拟 淬火 温度场 

分 类 号：TG156.3[金属学及工艺—热处理] TG161[金属学及工艺—金属学]