滤波器腔体压铸技术的研究和应用

Research and Application of Filter Housing for Aluminum Alloy Die-casting Technology

简要分析了滤波器腔体具有内腔共鸣信号柱多而孤立且内腔深的特点,该滤波器腔体在压铸成形过程中极易产生冷隔、气孔和缩孔,导致加工后,凸柱表面出现很多微孔,影响产品功能。提出了滤波器腔体的模具设计、压铸工艺以及修补处理等新方案,使滤波器腔体的共鸣柱加工后微孔明显减少,提高了产品的合格率,成功解决了多条相互不相连的共鸣信号柱的深腔滤波器铸件的压铸。

Cold shuts,porosity and shrinkage holes would appear easily in a kind of filter housing if it is manufactured by high pressure technology because there are a lot of signal pillars in the deep housing and all the signal pillars in the deep housing aren＇t connected each other.So lots of micro-small holes appear at the top of those pillars after machining and they would affect their function heavily.It was studied how to solve those problems by die-designing,technology and other repairing technology in post processing.Eventually,those problems were solved perfectly,the defective rate had been decreased to a low number which could be accepted.