The skinning phenomenon occurs at the time of shot blasting. This is not the same concept as the skinning of aluminum alloy die castings. Generally, there are several reasons for the surface skinning of aluminum alloy die castings after shot blasting.
2. If the injection pressure is not enough, it is necessary to pay attention to whether the movable mold retreats during injection.
3. There is a problem with the opening of the gating system. The alloy liquid enters the cavity and has turbulent flow.
4. Mold temperature problem.
5. The molten metal splashes severely during injection.