计算机填充模拟降低压铸件废品率的实践

采用双向收敛式横浇道生产日产出水管座和发动机支架，发现有气孔缺陷，同时渗漏率大于90％。通过计算机模拟分析，发现了易发生缺陷的位置，采用相应措施：加厚内浇道；开设两个溢流槽，增加静模型芯直径；适当调整工艺参数等，很好地解决了上述问题

Parctice in Computer Simulation to Reduce Reluctant Die Castings

Outwater base and engine bracket for Nissan car were manufactured by using double-directional convergent runner. It is found that the gas-pore defects present in the die castings,and the permeability rate is more than 90%. The easily presented position of the defects was observed by computer simulation. The above problems can be eliminated by thickening ingate, setting two overflow slots, increasing the diameters of stationary mould core and adjusting processing parameters.