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为了控制高强薄钢板喷水冷却过程的畸变,提高有限元模拟的精确度,设计了一套喷水淬火冷却试验装置,用于测量淬火时钢板温度随时间的变化曲线。使用DEFORM软件中的Inverse Heat Transfer反传热模块求解出高强薄钢板在喷水压力分别为0.05、0.1、0.2和0.3 MPa时钢板表面综合换热系数。试验结果表明,喷水冷却能提高水的对流换热,从而显著提高水在400℃以上高温段的冷却能力,对水在低温段的冷却能力没有明显提高。
In order to control the distortion of the high strength thin plate sprayed water cooling process and improve the accuracy of the finite element simulation, a set of spray quenching cooling test device was designed to measure the temperature curve of steel plate during quenching. The inverse heat transfer module in DEFORM software was used to solve the comprehensive heat transfer coefficient of the steel plate when the water pressure was 0.05, 0.1, 0.2 and 0.3 MPa respectively. The experimental results show that water jet cooling can improve the convective heat transfer of water, thus significantly improving the cooling capacity of water in the high temperature range above 400 ℃ and not significantly improving the cooling capacity of water in the low temperature range.