公开(公告)号：US06298898B1

公开(公告)日：2001-10-09

申请号：US09348626

申请日：1999-07-06

申请人： Shivantha Mahadeva ,  Darius Pradhir Kumar Singh ,  Doug Muller ,  Geoff Martin ,  Philip Renwick

发明人： Shivantha Mahadeva ,  Darius Pradhir Kumar Singh ,  Doug Muller ,  Geoff Martin ,  Philip Renwick

IPC分类号： B22D4600

CPC分类号： B22D46/00

摘要： A method of optimizing cycle time and/or casting quality in the making of a cast metal product which has been defined by a CAD product model. The method involves the steps of (a) providing a computer casting model using objective functions that simulate the filling and solidification of the CAD product model within dies, the casting model being subdivided into contiguous regions with each region having terms in at least one of the objective functions for thermal conductivity, heat capacity and cooling time period, (b) populating the objective function terms with experimental data to calibrate the casting model, derive matching heat 1s transfer coefficients for each region, and simulate filling and solidification of the product within the dies, and (c) constraining the objective functions to ensure directional solidification along the series of contiguous sections while optimizing thermal conductivity and heat capacity and iteratively evaluating the constrained objective functions to indicate at least certain regions of the casting model whereby chills and cooling channels may be added, or insulation added to effect improved cycle time and/or casting quality.

摘要翻译： 在CAD产品模型定义的铸造金属制品的制造中优化循环时间和/或铸造质量的方法。 该方法包括以下步骤：（a）使用模拟CAD产品模型在模具内的填充和固化的目标函数来提供计算机铸造模型，铸造模型被细分为连续区域，每个区域具有至少一个 热导率，热容量和冷却时间的目标函数，（b）用实验数据填充目标函数项以校准铸造模型，导出每个区域的匹配热量1s转移系数，并模拟产品的填充和固化 （c）约束目标函数，以确保沿着该连续部分的一系列定向凝固，同时优化热导率和热容量，并迭代地评估受约束的目标函数，以指示铸造模型的至少某些区域，由此，冷却和冷却通道可以 添加或绝缘添加效果得到改善 循环时间和/或铸造质量。