低压铸造温度场数值模拟中换热情况处理

Dealing with Thermal Exchange in Temperature Field Simulation in Low Pressure Die-casting Process

以戴卡轮毂制造有限公司铝合金轮毂生产为背景 ,开发以个人微机为硬件基础的Windows平台下低压铸造充型与凝固模拟软件。传热计算是凝固模拟技术的基础 ,对低压铸造复杂的边界换热现象进行了全面的研究 ,建立了引入冷却介质模型块的立体计算模型 ,根据传热计算中的节点分布位置 ,详细分析了各种不同的传热计算方式 ,并针对实际生产中用户可以直接调控的冷却系统参数建立了综合的计算模型。

The main effort is to develop numerical simulation software of low pressure die casting on Windows platform in Personal Computer, based on the production of aluminum wheel in Die cast wheel manufacture Co. Ltd.. The heat conduction calculation is the basis of solidification simulation. A 3 dimentional model including the refrigeration medium block is set up based on the study of boundary heat exchange. Various calculation method is analyzed for different types of boundary element. A comprehensive calculation model is set up according to practically manipulable parameters in production.