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Casting info--car rear view mirror support

September 04, 2024
1.Casting info
name:car rear view mirror support
requirements:internal requirement
casting process: 
Die Casting machine tonnage:500T
punch dia(mm):80
alloy material: A380
casting weight (g):1280
casting size(mm): 260*Ø160*Ø80
Average wall thickness(mm):5
2.Casting problem
screw hole defects.see the defective position pic.
3.Casting picture
Casting picturePIC 3 Defect position(the marked positions are machining holes )
4. Casting analysis
red circled blind hole machining countersunk screw belongs to the wall thickness part. shrinkage holes are produced when the casting shrinks.
5.Improving measures
Seal the red circled part,open the blue circled part.The original core-pulling slider is used to feed, and the filling pressure is transferred. 
6.improving results
after blind hole part machine countersunk screw hole,95% is porosity free
7. Tips
For feeding 
For the parts with high quality requirements or to be processed, the gate should be prior arranged near it
 
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Mr. Logan

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8618157495020

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