利用开发的特厚钢板射流淬火试验装置及多通道温度记录仪,测试了射流速度14.0 ～ 23.5 m/s、射流压力0.4～1.0 MPa条件下,84 mm、170 mm厚大断面钢板淬火温降曲线,采用有限元方法建立了三维反传热导热模型和表面换热系数模型,对比分析了射流参数和换热区分布对钢板厚向温降、温度梯度和冷速的影响.结果表明:84 mm厚钢板断面冷速与表面换热系数近似正比关系,射流速度为23.5 m/s时钢板心部冷速达3.7℃/s;170 mm厚钢板表面换热对厚向冷速影响减弱,相应的温度遗传效应和断面厚向温度梯度的影响增强.
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