What Are The Reasons For The Peeling Of The Shot Blasting Machine After Shot Blasting?
After shot peening, the surface of the casting will show a thin layer of skin that lifts up or even falls off. The phenomenon that the size, area and orientation are not fixed can be easily removed by hand. This phenomenon is called peeling after shot blasting.
cause:
1. The casting is not compacted, and the surface has casting defects such as cold insulation, delamination, air bubbles and poor alloy blending.
2. The ejection speed of steel shot is too high.
3. The shot peening time is too long.
4. The way of the pendant is unreasonable, unstable, and bumps against each other.
5. The shape of the steel shot is poor and not oily.
6. Steel shot contains sharp impurities.
Cleaning method:
1. The outside of the casting is dark. Adjust the die-casting process parameters or equipment parameters of the shot blasting machine.
2. Properly reduce the shot blasting speed of the shot blasting machine.
3. Properly reduce the shot peening time.
4. Use reasonable hangers to ensure that the castings are fixed during the shot peening process, and special fixtures can be used if necessary.
5. Buy steel shot with regular shape
6. Screen the steel shot or replace the steel shot.
cause:
1. The casting is not compacted, and the surface has casting defects such as cold insulation, delamination, air bubbles and poor alloy blending.
2. The ejection speed of steel shot is too high.
3. The shot peening time is too long.
4. The way of the pendant is unreasonable, unstable, and bumps against each other.
5. The shape of the steel shot is poor and not oily.
6. Steel shot contains sharp impurities.
Cleaning method:
1. The outside of the casting is dark. Adjust the die-casting process parameters or equipment parameters of the shot blasting machine.
2. Properly reduce the shot blasting speed of the shot blasting machine.
3. Properly reduce the shot peening time.
4. Use reasonable hangers to ensure that the castings are fixed during the shot peening process, and special fixtures can be used if necessary.
5. Buy steel shot with regular shape
6. Screen the steel shot or replace the steel shot.