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Casting info--electric car parts

September 01, 2024
1.Casting info
name: electric car parts
requirements:surface requirements
casting process:
 Die Casting machine tonnage:660T
punch dia (mm):70
material: ADC12
casting weight (g):140
filling weight(g):283
casting size(mm):146.15*216.48*84.65
average wall thickness(mm):1.2
high velocity m/s:4.5
 dry injection stroke(mm):460
Inner gate section mm²:154.7
2.Casting question:
surface depression,cold shut,see it on defects position photo
3.Casting picture
Top front viewcasting picture
4. Casting analysis
depression: 1.the 4 isolated thread hole boss are at the end of product. wall thickness is 1.2mm,multiplication can not give timely feeding. 2.aluminium liquid has poor flow. 
cold shut:product construction problem.when aluminium liquid flow to fill,there are air entrainment.
5.Improving measures
depression:depression position add some cold and add a bridge in the middle. 
cold shut:add some construction on part of the cold shut position,this construction can be moved by machining.
Local wall adjusting diagram
6.Result of improving
Improving result diagram
7. Tips
For casting design adjustment:
Some design adjustment of casting are good for die casting process.and good for enhancing the products yield,but sometimes can not get support from customers(actually it is price not supported ),if company adjust the casting design, and enhance the products yield,although it will increase the processing cost in following.the composite cost is decreased.This is one of the method.
 
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Mr. Logan

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