无缸套铝缸体压铸浇注系统的设计

姚杰; 王春涛; 翁辉明; 樊敬位; 邬杭益

doi:10.15980/j.tzzz.2014.05.008

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无缸套铝缸体压铸浇注系统的设计
Design of Gating System for Die Casting Aluminum Alloy Cylinder Block with Cast-Iron Cylinder Liners Free
2014年34卷第5期页码：489-491
纸质出版日期： 2014 ，
DOI： 10.15980/j.tzzz.2014.05.008

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[1]姚杰,王春涛,翁辉明,樊敬位,邬杭益.无缸套铝缸体压铸浇注系统的设计[J].特种铸造及有色合金,2014,34(05):489-491.

Yao Jie, Wang Chuntao, Weng Huiming, et al. Design of Gating System for Die Casting Aluminum Alloy Cylinder Block with Cast-Iron Cylinder Liners Free[J]. Special Casting & Nonferrous Alloys, 2014,34(5):489-491.
[1]姚杰,王春涛,翁辉明,樊敬位,邬杭益.无缸套铝缸体压铸浇注系统的设计[J].特种铸造及有色合金,2014,34(05):489-491. DOI： 10.15980/j.tzzz.2014.05.008.

Yao Jie, Wang Chuntao, Weng Huiming, et al. Design of Gating System for Die Casting Aluminum Alloy Cylinder Block with Cast-Iron Cylinder Liners Free[J]. Special Casting & Nonferrous Alloys, 2014,34(5):489-491. DOI： 10.15980/j.tzzz.2014.05.008.

摘要

介绍了无缸筒衬套的全铝发动机缸体压铸浇注系统的设计。缸体铸件整体形状复杂

结构多变

壁厚不均匀

缸套处不采用预镶缸套

壁厚大。采用单侧进料方式

有利于铸件在浇注过程中的排气

避免气体窝在缸筒内

出现大的气缩孔。采用真空抽气方式

能显著减少气孔

使组织更加致密

提高铸件的力学性能。设计合理有效的缸筒镶件结构

并对其进行表面处理

降低表面的摩擦因数

可以使缸体脱模时减少对模具的损伤。

Abstract

Design of gating system for die casting aluminum alloy cylinder block with cast-iron cylinder liner free was conducted.The cylinder block with uneven thickness has the characteristics of complicated shape and various structure.Meanwhile

pre-inserted cylinder liners are canceled

leading to a thicker wall-thickness.Single-side feeding is beneficial for the exhausting during pouring process

avoiding the occurrence of shrinkage holes（porosity）through exhausting gas in cylinder.Vacuum drawing can decrease gas hole greatly and densify the microstructure to improve the mechanical properties of the cylinder block.Cylinder insert mechanism was designed effectively

and its surface was treated to decrease frictional coefficient

which could decrease the harm to the mould during pull-out.