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Casting problem-Cold stripes

August 28, 2024
1.  Casting problem
Cold stripes 
2. Casting photographs
Casting photographsdefect location
3. Cast analysis 
This case is a casting with a rectangular cavity and skirt. Due to the opening position of both sides of the gate and the filling angle, the metal on the side moves too fast to form a wrap, which is the main cause of bad casting.
4. Improvement 
Cut the gate on both sides as the slag bag, keep the middle 5 gates, so that the deep cavity can be filled from the middle to the outside parallel filling, add two slag bags and exhaust at the end of the two sides, so that the purpose of improvement can be avoided.
5. Tips
About slag bag:
The mutual connection between slag bags is easy to affect the exhaust or even the slag discharge, in principle, should be separate exhaust, not connected. If you consider the convenience of stripping or centralized exhaust, the connection should be far away from the slag bag and then connected, as far as possible to avoid mutual interference with exhaust.
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