When the mold temperature difference is large, the variables in the production cycle, such as filling time, cooling time, and spraying time, will be affected to varying degrees. Here is an introduction to common problems and improvement methods of d...
The control of the die cast tooling surface temperature is very important for producing high quality die castings.
Uneven or inappropriate temperature will also cause the size of the casting to be unstable, and the casting will be deformed during the production process, resulting in defects such as thermal pressure, mold sticking, surface depression, internal shrinkage and hot bubbles. When the mold temperature difference is large, the variables in the production cycle, such as filling time, cooling time, and spraying time, will be affected to varying degrees. Here is an introduction to common problems and improvement methods of die-casting molds.
1. Cold mark
Reason: The temperature at the front of the molten soup is too low, and there are traces when they overlap.
Improve methods:
1. Check whether the wall thickness is too thin (designed or manufactured), and the thinner area should be directly filled.
2. Check if the shape is not easy to fill: too far, closed area, blocked area, too small rounded corners, etc. are not easy to fill.
3. Shorten the filling time.
4. Change the filling mode.
5. Increase mold temperature.
6. Increase the temperature of the molten soup.
7. Check the alloy composition of the die casting mold.
8. Enlarging the escape airway may be useful.
9. Adding a vacuum device may be useful.
Oops! This image does not follow our content guidelines. To continue publishing, please remove it or upload a different image.
