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Casting problem

August 28, 2024
1.  Casting problem
Have air pores on surface  
Casting information
Casting information
2. Casting photographs
Casting photographsLocation of flaw (have air pores on the surface of cover half )
3. Cast analysis 
The casting in this case has finishing requirement, the structure of the four sliders is relatively complex, the choice of pouring gate location is subject to certain restriction. The runner layout metal flow  into the deep cavity channel is too narrow to satisfy that exhaust the air in the cavity effectively, which is the main reason of leading flaw.
4. Improvement 
The runner extend to connect with slag bags, the original overflow gates transform into pouring gates. Metal  flow through the core into deep cavity and increase the flow, changing the original orientation and playing a deep cavity filling effect that achieve the purpose.
Runner adjustment pattern
5. Tips
About deep cavity exhaust:
For the deep cavity at the bottom which has core-pulling can add place to exhaust slag and air in the part of closing mold line.
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Mr. Logan

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