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环形锻件风冷温度场仿真优化

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热处理是决定金属最终组织性能的关键,其中冷却过程温度场控制是热处理的核心.大型环形锻件尺寸规格大、风冷热处理条件下温度场一致性差、控制难.针对上述难题,本文通过环形缩比件风冷正火实验与测量,反算对流换热系数,开展环件风冷散热的模拟仿真,研究环形件风冷温度场演变情况,并给出风冷工艺的优化策略.结果表明,环形件风冷正火过程流场与温度场耦合变化,合理设计导流台和风速能够改善流场分布,并显著提高环件散热效率.本方法能够为大型环形锻件风冷正火过程的温度场分析以及热处理工艺优化提供技术支撑.
Simulation optimization of Air-cooling temperature field for Ring-shaped forging parts
Heat treatment is the key to determine the final microstructure and properties of the metal,and the temperature field control of the cooling process is the core of heat treatment.Large ring-shaped forging parts have large size,poor temperature field consistency and difficult controllability under air-cooled heat treatment conditions.In view of the above problems,this paper inversely calculates the convective heat transfer coefficient through the air-cooled normalizing experiment and measurement of the scaled ring-shaped parts.Through the simulation of the air-cooled heat dissipation of the ring-shaped parts,the evolution of the air-cooled temperature field of the ring-shaped parts is studied,and the optimization suggestions of the air-cooled process are given.The results show that the flow field and temperature field are coupled during the air-cooled normalizing process.The reasonable design of the deflector and the wind speed can improve the flow field distribution and significantly improve the heat dissipation efficiency of ring-shaped parts.The method in this paper can provide technical support for temperature field analysis and heat treatment process optimization of large ring forging parts during air cooling normalizing process.

ring-shaped forging partsair-cooled normalizingheat convectiontemperature field

周逸辉、李大永、周国伟、张志武

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上海交通大学 机械与动力工程学院,上海 200240

上海交通大学 船舶海洋与建筑工程学院,上海 200240

环形锻件 风冷正火 对流换热 温度场

2024

模具技术
上海交通大学

模具技术

CSTPCD
影响因子:0.219
ISSN:1001-4934
年,卷(期):2024.(4)
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