ZL101A铝合金机器人件的熔模铸造数值模拟

Numerical Simulation of Investment Casting for ZL101A Robot Part

以铝合金机器人件为研究对象,在实验研究的基础上,利用铸造模拟软件Pro CAST,对熔模铸造的充型过程和凝固过程进行数值模拟。通过对温度场模拟结果的分析发现,缩松、缩孔易出现在零件壁厚较大部位和几何结构复杂部位。对浇注工艺参数进行优化,优化结果说明,通过提高模壳预热温度和浇注液体的温度,以及在浇道处采取保温措施,加设保温石棉层等,能够较好的避免上述缺陷的产生,提高铸件成品率。

Taking aluminum robot parts as research object, on the basis of experiments, the numerical simulation of filling and solidification process in casting were conducted by the ProCAST software. The simulation results show that shrinkage porosity（hole） easily occur in thick and complex geometries parts by observing of temperature field. The above defects can be avoided by increasing pouring temperature of the alloy and pre-heating temperature of the mould, and adding preservation material to the pouring system, such as asbestos layer. Qualified rate of the castings has been substantially increased through the above measures.