Production of Nodular Iron Steering Knuckles for Micro-car by Shell Mold Casting

Wang Gongping; Shi Guanghua

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Production of Nodular Iron Steering Knuckles for Micro-car by Shell Mold Casting
Issue 7, Pages: 538-539(2007)
Published： 2007 ，
DOI：

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[1]王公平,石光华.微车转向节系列球铁铸件的壳型铸造[J].特种铸造及有色合金,2007(07):538-539+490.

Wang Gongping, Shi Guanghua. Production of Nodular Iron Steering Knuckles for Micro-car by Shell Mold Casting. [J]. Special Casting & Nonferrous Alloys (7):538-539(2007)
[1]王公平,石光华.微车转向节系列球铁铸件的壳型铸造[J].特种铸造及有色合金,2007(07):538-539+490. DOI：

Wang Gongping, Shi Guanghua. Production of Nodular Iron Steering Knuckles for Micro-car by Shell Mold Casting. [J]. Special Casting & Nonferrous Alloys (7):538-539(2007) DOI：

摘要

针对微车转向节系列球铁铸件的壳型铸造生产中

采用中注式浇注系统出现的渣孔、气孔、缩松等问题

增大排气道和浇、冒系统体积

改变铁水进入型腔的方向

选用合适的球化剂、球铁用生铁及辅料

铸件合格率由原来的50%左右提高到85%以上。

Abstract

There exist slag hole

gas hole and shrinkage porosity in nodular iron steering knuckles for micro-car in shell mold casting with middle-pouring gating system.Through enlarging exhausted channel and the size of gating and runner system

adjusting pouring direction of liquid Fe into cavity and selecting proper nodular agent

raw Fe for nodular iron and auxiliary materials

the qualified rate of the castings can be increased from about 50% to more than 85%.