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1. 发明申请

US20110098989A1 Systems and methods for predicting heat transfer coefficients during quenching 有权
标题翻译：淬火期间传热系数的预测系统和方法
公开(公告)号：US20110098989A1
公开(公告)日：2011-04-28
申请号：US12589351
申请日：2009-10-22
申请人： Qigui Wang , Bowang Xiao , Gang Wang , Yiming Rong , Richard D. Sisson
发明人： Qigui Wang , Bowang Xiao , Gang Wang , Yiming Rong , Richard D. Sisson
IPC分类号： G06G7/56 , G06G7/64 , G06F17/10 , G06G7/57 , G06F17/00
CPC分类号： G06F17/5018 , B22D30/00 , C21D1/613 , C21D1/62 , C21D11/005 , C22C21/00 , C22F1/04 , C22F1/06 , G06F2217/08 , G06F2217/16 , G06F2217/80
摘要： A method to predict heat transfer coefficients for metal castings during quenching and/or cooling is provided. First, an initial set of HTC data are obtained from the computational fluid dynamics (CFD) simulation based on the metal casting geometry, initial metal casting temperature (distribution), quench bed/tunnel dimensions and set-up, and a given or baseline (standard) quenching condition including, but not limited to, air and/or gas flow velocity, air and/or gas flow direction relative to the work piece, air and/or gas temperature, air and/or gas humidity, etc. The initial HTC values for the entire surface of the work piece calculated from CFD can then be optimized by multiplying scale factors to minimize the error between the predicted temperature-time profiles and the experimental measurements for the given or standard/baseline quench condition. When the HTC values are optimized for a standard/baseline quench condition, a set of semi-empirical equations (or weight functions) can be used to quickly modify the standard/baseline HTC data for different quenching conditions (i.e., variations of quenching conditions from the baseline) without performing complete heat transferring and optimization calculations. A system and article of manufacture are also provided.
摘要翻译：提供了一种在淬火和/或冷却期间预测金属铸件的传热系数的方法。首先，从基于金属铸造几何，初始金属铸造温度（分布），淬火床/隧道尺寸和设置的计算流体动力学（CFD）模拟获得初始的HTC数据集，以及给定或基线（标准）淬火条件，包括但不限于空气和/或气体流速，相对于工件的空气和/或气体流动方向，空气和/或气体温度，空气和/或气体湿度等。初始然后可以通过乘以比例因子来优化从CFD计算的工件的整个表面的HTC值，以使预测温度 - 时间曲线与给定或标准/基线淬火条件的实验测量之间的误差最小化。当对于标准/基线淬火条件优化HTC值时，可以使用一组半经验方程（或权重函数）来快速修改不同淬火条件下的标准/基线HTC数据（即淬灭条件的变化基线），而不进行完全的热传递和优化计算。还提供了系统和制品。

2. 发明授权

US08437991B2 Systems and methods for predicting heat transfer coefficients during quenching 有权
标题翻译：淬火期间传热系数的预测系统和方法
公开(公告)号：US08437991B2
公开(公告)日：2013-05-07
申请号：US12589351
申请日：2009-10-22
申请人： Qigui Wang , Bowang Xiao , Gang Wang , Yiming Rong , Richard D. Sisson
发明人： Qigui Wang , Bowang Xiao , Gang Wang , Yiming Rong , Richard D. Sisson
IPC分类号： G06G7/56 , G06G7/48 , G06F17/10
CPC分类号： G06F17/5018 , B22D30/00 , C21D1/613 , C21D1/62 , C21D11/005 , C22C21/00 , C22F1/04 , C22F1/06 , G06F2217/08 , G06F2217/16 , G06F2217/80
摘要： A method to predict heat transfer coefficients for metal castings during quenching and/or cooling is provided. First, an initial set of HTC data are obtained from the computational fluid dynamics (CFD) simulation based on the metal casting geometry, initial metal casting temperature (distribution), quench bed/tunnel dimensions and set-up, and a given or baseline (standard) quenching condition including, but not limited to, air and/or gas flow velocity, air and/or gas flow direction relative to the work piece, air and/or gas temperature, air and/or gas humidity, etc. The initial HTC values for the entire surface of the work piece calculated from CFD can then be optimized by multiplying scale factors to minimize the error between the predicted temperature-time profiles and the experimental measurements for the given or standard/baseline quench condition. When the HTC values are optimized for a standard/baseline quench condition, a set of semi-empirical equations (or weight functions) can be used to quickly modify the standard/baseline HTC data for different quenching conditions (i.e., variations of quenching conditions from the baseline) without performing complete heat transferring and optimization calculations. A system and article of manufacture are also provided.
摘要翻译：提供了一种在淬火和/或冷却期间预测金属铸件的传热系数的方法。首先，从基于金属铸造几何，初始金属铸造温度（分布），淬火床/隧道尺寸和设置的计算流体动力学（CFD）模拟获得初始的HTC数据集，以及给定或基线（标准）淬火条件，包括但不限于空气和/或气体流速，相对于工件的空气和/或气体流动方向，空气和/或气体温度，空气和/或气体湿度等。初始然后可以通过乘以比例因子来优化从CFD计算的工件的整个表面的HTC值，以使预测温度 - 时间曲线与给定或标准/基线淬火条件的实验测量之间的误差最小化。当对于标准/基线淬火条件优化HTC值时，可以使用一组半经验方程（或权重函数）来快速修改不同淬火条件下的标准/基线HTC数据（即淬灭条件的变化基线），而不进行完全的热传递和优化计算。还提供了系统和制品。

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