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.