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Casting info--Engine front cover

August 30, 2024
1.Casting info
name: Engine front cover
requirements: internal requirements
casting process:
Die Casting machine tonnage:1250T
punch dia(mm):130
material: ADC12
casting weight (g):4272
filling weight(g):5224
casting size(mm):370*500*10
average wall thickness(mm):3
high speed m/s:2.6
 dry injection stroke(mm):910
high speed switching position (mm):780
flow gate section mm²:750
2.casting question:
machining air hole.see the defects position
3.casting picture
Top front viewcasting picture
4. Casting analysis
Casting analysis
5.Improvement
solution 1: add auxiliary runner,increase the density of the defective place
add auxiliary runner,increase the pressure of the defective place,and increase the casting density
solution 1
solution 2: cooling the mould inside by water,to increase the mould temperature
cooling the mould inside by water 
marked places are on 1/2 cold water 
unmarked places are closed
solution 2
solution 3: improve the spraying qty,and increase the mold temperature after spraying
spray release agents to improve
spray on the marks
do not spray on the unmarked places.
solution 3
spraying position
spraying position
6. Results after improving 
defective rate is reduced from 8% to less than 0.5%
machining picture after improving
7.Tips
For low temperature area:
It is easier to have defects if the mould temperature is too low. The temperature is lower,then it will cause cold material faster.the transferred pressure is reduced. Gaseous slag is easy to gather.so it causes porosity,shrinkage cavity,slag holes.
 
Contact Us

Author:

Mr. Logan

Phone/WhatsApp:

8618157495020

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