铝合金活塞铸造工艺数值模拟研究

Numerical simulation research on aluminum alloy piston casting process

针对铝合金活塞铸造成型过程中存在缩松、缩孔、晶粒尺寸不均匀等缺陷问题,利用Procast专业铸造有限元分析软件,进行了ZL108铝合金活塞铸造工艺的数值模拟研究,利用正交试验法考察了浇注温度、浇注速度、模具温度3个工艺参数,对数值模拟结果进行了晶粒尺寸、缩松缩孔分布、充型率等几个方面的综合评分。研究结果表明:最优的工艺参数组合为700℃的浇注温度、0.3 kg/s的浇注速度和150℃的模具温度。ZL108铝合金活塞铸造工艺数值模拟研究结果为壁厚不均匀的重要复杂零件铸造成型提供了理论指导,节省零件工艺优化设计的成本和时间。

Aiming at the shrinkage, grain size inhomogeneity in the casting process of aluminum alloy piston, the professional casting software Procast was used to make numerical simulation research on the piston casting process. Orthogonal experiment method was investigated three process parameters of pouring temperature, casting speed, mold temperature.The numerical simulation results were evaluated from several aspects, such as the grain size, shrinkage porosity distribution and filling rate. The results indicate that the optimal combination of process parameters is 700 ~C pouring temperature, 0.3 kg/s casting speed, and 150 ~C mold temperature. The numerical simulation of ZL108 aluminum alloy piston casting process provides theoretical guidance for uneven thickness complex parts casting molding, reduces the cost and time of the part design process optimization