There are two types of peeling phenomenon in aluminum alloy die-casting parts: 1. Peeling after sandblasting or shot blasting. The parts with more cold lines on the surface of the product subjected to high-speed and high-pressure impact are prone to peeling. 2. After high-temperature baking, the product peels off. Due to high-temperature baking, there are many internal pores in some areas, and the release of internal air can easily cause surface bubbles or peeling. This can be solved through the following methods.
1. Firstly, improve the die-casting machine and die-casting parameters.
2. Adjust the die-casting speed and injection stroke, and increase the pressure.
3. Spray as little release agent as possible on this area to maintain thermal mold balance.
4. Improve from the aspects of mold design flow channel and exhaust.
The above are the reasons and solutions for peeling of aluminum alloy die-casting parts. After reading, I hope it will be helpful to you.