大型钢锭锻前加热过程有限元模拟

Finite Element Simulation of Heating Process Before Forging Large Scale Ingot

实测了支承辊用6Cr2MnMoV钢的高温热物性参数,建立了86 t钢锭锻造前加热过程的有限元模型。采取等效模冷法,分别模拟了冷送和热送过程钢锭表面和心部温度场的演化。结果表明,达到相同的均温程度时,86 t冷送锭所需的加热时间约为48 h,而热送锭所需的加热时间约为33 h,热送锭的加热时间仅为冷送锭的约2/3。本研究所建模型和研究结果可为企业制定加热工艺参数提供重要参考。

Based on the measured thermal-physical parameters of 6Cr2MnMoV steel,the FEM for the heating process of an 86 t ingot before forging was established.Through proposed equivalent mould cooling method,the temperature evolution of cold feeding ingot and hot feeding ingot process were simulated and investigated,separately.The FEM results show that the totally required heating times for reaching isothermal of the whole ingot are 48 hours and 33 hours under cold feeding ingot and hot feeding ingot,respectively,which indicates that the heating time of hot feeding ingot is only 2/3 compared with that of cold feeding ingot.The established model and research results provides a significant reference for production.