aluminum die casting defects

How do you overcome Aluminum die casting defects ?

Aluminum die casting defects is an undesired irregularity in a aluminium Die casting process .but it’s also a normal phenomenon .As 650°C molten aluminium material solidify into casting by high pressue.  This process cause Gas porosity,Shrink porosity,etc casting defect.moreover the long process from  casting to final product by man-made, It aslo lead to  the Surface defects and another problem.  the most common defects are gas porasity and shrink porosity and wraping.cracks. These defects caused by smallest diecast tool size ,wrong design of mold, lack of venting, cold mould, low aluminium temperature or high, dirty metal, Other possible defects are turtle cracks, pushed pins,drags,etc please see aluminium die casting defects ppt or casting defects and remedies pdf.
our team

Robert luo

Engineer Manager, Co-partner

There are  many die casting supplier in manufacturing country .But it’s hard to find suitable and powerful factory in china .SYX die casting company has been helping customers produce quality casting products  more than 20  years .we  solved many difficult and complicated die casting defects by excellent  equipment  and experience and supply perfect casting product . our team  research a way  how to meet customer requirement .

Some Facts About Me:

  • Technical education
  • 15+ years of experience
  • 200+ successfull projects
  • Creative and easy-going
  • Responsible
  • Attentive to details

Type of Aluminum die casting defects


gas porosity, blow holes

Like mosquito , we can’t eliminate gas porasity . but we can hide it  in an unimportant position .1. it’s depand on the mold designer , and less machining allowance.2 .choose brand die casting machine with center furnace .3.use vacuum die casting system
shrink porosity

shrink porosity

Shrink porosity is same as gas porasity problem . 1. open large mold and use bigger die casting machine to kill it.2.control the thickness of die casting


Avoid cracks on the rough  casting , 1.try to choose brand aluminium material to solve it 2. use center furance for molten aluminum
die casting flatness


Avoid the warpage , 1. make bigger size mold ,2 good runner system .please also look my post :  wraping die casting part
ATCHECKING die casting


Solution:Avoid thes urface of the tool steel continually expanding&contracting duringuse. 1. good die casting mold material , 2.nice cooling system
ter die casting


Avoid trapped gases are in the casting when the die is opened when the casting is still weak.Open big mold with exhaust block ,or use vacuum die casting system

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