CASTING PROBLEMS
NON OR PARTIAL FILL
NON OR PARTIAL FILL
Possible Fault Cause | Solution |
Metal temperature incorrect | Increase metal temperature first before increasing the flask temperature (see burnout section). |
Flask temperature incorrect | Increase flask temperature (see burnout section). |
Incorrect feed/sprue system | Feed or gate should be attached to the thickest part of the casting. It should be at least 25% of the thickness of the casting. |
Insufficient centrifugal force | Increase torque first and then RPM of the centrifugal casting machine. Only increase by small amounts each time (5%). |
Low vacuum when vacuum casting | Change oil in pump on a regular basis. Check seals for blockages in the vacuum pipes. |
Not enough over pressure | Only increase over pressure by small amounts each time (5%). |