文档介绍：Nodular Irons & Gray Irons 球
墨
铸
铁
与
灰
铸
大型铸铁件的铸造工艺设计铁
杜瑞祥
(天津三达铸造有限公司,天津)
300251
摘要:通过分析大型铸铁件的特点,认为其浇注工艺设计的主要原则应当是:分散底注快速浇注和高温浇注;并对各种
、
浇注工艺的优缺点进行了详细分析最后用叶片环状支架压缩机缸体上侧横梁等大型铸铁件的浇注工艺实例说明采
。、、
用分散底注的浇注方式,同时适当提高浇注温度和速度,可以提高铸件成品率
。
关键词:大型铸铁件;分散底注;快速浇注;高温浇注
中图分类号: 文献标识码: 文章编号: ( )
TG244+.2 A 1003-8345 2009 05-0043-04
Casting Method Design of Heavy Iron Castings
DU Rui-xiang
( )
Sanda Foundry Co. Ltd., Tianjin 300251, China
Abstract: Based on the analysis of characteristic s of heavy iron castings, it's considered that their casting method design
principle should be as: bottom gating with dispersed ingates, fast and high temperature pouring. The advantages and
disadvantages of various casting methods were analyzed in detail, and the casting methods of some heavy iron castings such as
the ring-shaped bracket of blades, top cylinder block and crossbeam pressor and so on were taken as examples to show
that it is possible to increase the rate of qualified castings by adopting bottom gating with dispersed ingates and properly
increasing pouring temperature and pouring rate。
Key words: heavy iron castings; bottom gating with dispersed ingates; fast pouring; high temperature pouring
大型铸铁件的特点是尺寸大,即体积大质免气体裹入,减少金属液氧化;同时有利于型腔
、
量重浇注的铁液多壁厚相对较厚,形状有的简
、、
单有的复杂,缺陷种类也繁多,这与铸铁件生产
、
的每道工序都息息相关(见图)
1 。
大型铸铁件的浇注系统设计需要掌握如下
原则: