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设计了空调压缩机前盖挤压铸造模具,并进行了模拟分析。计算了挤压力、脱模力和顶件力、合模力、浇道尺寸。沿制件截面最大处和侧抽芯孔的中心部位确定分型面。溢流槽采用梯形结构。为加速气体的排出,在溢流槽后部连接排气道,并设置了排气块。采用斜销-导板式抽芯机构。冷却孔道中心线与型腔表面的距离,为冷却孔道直径的1~2倍;冷却孔道间的中心距,为冷却孔道直径的3~5倍。浇注系统满足了顺序凝固原则,制件在凝固过程中可得到良好的补缩,避免了缩孔、缩松产生。
Aeroengine compressor front cover squeeze casting mold was designed and simulated. Calculated the extrusion pressure, stripping force and top force, clamping force, runner size. The parting surface is determined along the center of the largest section of the part and the side of the core-pulling hole. The overflow tank has a trapezoidal structure. In order to accelerate the discharge of gas, an exhaust duct is connected to the rear of the overflow tank and an exhaust block is provided. Using oblique pin - guide type core pulling mechanism. The distance between the cooling hole centerline and the cavity surface is 1 ~ 2 times the diameter of the cooling hole; the center distance between the cooling holes is 3 ~ 5 times the diameter of the cooling hole. Gating system to meet the principle of the order of solidification, parts in the solidification process can be a good complement to avoid shrinkage, shrinkage produced.