Research and Application of Die Casting Filter Cavity

Li Weiming; Li Sidi; Luo Jinqi; Cai Guoming

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Research and Application of Die Casting Filter Cavity
Vol. 31, Issue 7, Pages: 629-631(2011)
Published： 2011 ，
DOI：

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[1]李维明,李四娣,罗金祺,蔡国明.滤波器腔体压铸技术的研究和应用[J].特种铸造及有色合金,2011,31(07):629-631.

Li Weiming, Li Sidi, Luo Jinqi, et al. Research and Application of Die Casting Filter Cavity. [J]. Special Casting & Nonferrous Alloys 31(7):629-631(2011)
[1]李维明,李四娣,罗金祺,蔡国明.滤波器腔体压铸技术的研究和应用[J].特种铸造及有色合金,2011,31(07):629-631. DOI：

Li Weiming, Li Sidi, Luo Jinqi, et al. Research and Application of Die Casting Filter Cavity. [J]. Special Casting & Nonferrous Alloys 31(7):629-631(2011) DOI：

摘要

滤波器铸件腔体具有共鸣信号柱多而孤立且内腔深的特点

在压铸成形过程中极易产生冷隔、气孔和缩孔

导致加工后

凸柱表面微孔众多

影响产品功能。从滤波器腔体的模具设计着手

优化滤波器型腔信号柱结构

采用挤压销方法

在压铸时

对模具披覆处理

采用抽真空工艺

对部分铸件进行修补处理

使滤波器腔体的共鸣柱加工后微孔得到明显减少

提高了产品的合格率

成功生产出多条相互不连通的共鸣信号柱的深腔滤波器铸件。

Abstract

There exist many isolated resonance signal columns in filter mould with deep cavity

resulting in the easy occurrence of cold shut

gas hole and shrinkage porosity in die casting process. Amounts of micro-hole occur in the surface layer of concave column after machining to affect the product function. Through adjusting mould design

die casting parameters and welding repair treatment for the filter cavity

micro-hole is greatly decreased in machined resonance signal column in the mould

increasing the qualified rate of product.