Die casting defect analysis

1. Insufficient filling

Main feature: The metal has been cooled and solidified before filling the cavity, or the metal scooped by the scoop is insufficient.

possible reason:

1. The metal pressure is too low; 2. The speed of the first stage is too low (the metal is cooled too fast in the injection cylinder); 3. The switching point of the first stage/second stage is too late; 4. The deceleration setting is wrong; 5. The speed of the second stage is too low; 6. The injection weight of the scoop is set incorrectly; 7. The injection port is blocked; 8. The flow groove of the quantitative furnace is blocked; 9. The pipeline of the quantitative furnace is blocked; 10. The operation cycle is not Formal; 11. Too little lubricating oil for the punch/stick sticking of the punch; 12. The die is too cold; 13. The die is sprayed too much; 14. The vacuum leaks; 15. The vacuum is opened too early/late; 16. The exhaust duct and/ Or overflow failure; 17. Poor gate and runner design (part of the mold may be too cold); 18. Poor thermal control of heating and cooling points; 19. Difficulty in forming the geometry of the casting; 20. Too much metal Hot/cold; 21. The metal specification is wrong.

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