Aluminum die castings are prone to mold growth. What is the reason for this?
During the production process, the workpiece remains damp; After the mechanical processing process, without doing any cleaning or simply flushing with water and gas, it is impossible to ensure complete cleanliness and tidiness. There are residual corrosive substances such as release agents, metal cutting fluid, soap foot fluid, etc. on the surface of die cast aluminum. It is worth mentioning that currently, common degreasers on the market, such as gasoline, water, diluents, trichloroethylene, dichloromethane, and degreasers, are unable to clean mold spots on aluminum die castings, and have no effect on aluminum die castings that have already been mildly oxidized by air. This type of water, corrosive substances, and mold spots promote the re mold, blackening, and yellowing of aluminum alloy die castings. The reason is that aluminum is a reactive metal. When it comes into contact with water, high humidity, or corrosive substances, it will accelerate air oxidation or mold growth, which is also influenced by the characteristics of aluminum itself.
After cleaning, the workpiece was not immediately treated for corrosion prevention, and was stored in a damp and cold warehouse for a long time, for a month, or even a year, which caused the die casting aluminum to mold again. Neglecting management methods for moldy workpieces and letting them go.
Aluminum Alloy Die-Casting products are suitable for electronic devices, vehicles, electric motors, household appliances, and some communication industries. High quality aluminum alloy profiles with excellent performance, high precision, and high wear resistance are also used in highly regulated fields such as large aircraft and ships. The key use may be in some parts of equipment. What must we pay attention to in the production and processing of Aluminum Alloy Die casting? 1. Considering the issue of mold production;
2. Considering the issue of wall thickness in Aluminum Alloy Die Casting, excessive differences in thickness can pose a risk to the filling process; 3. Minimize the occurrence of complex mold designs due to structural types, and it is necessary to apply several core pulling or spiral core pulling methods
