Publish Time: 2023-04-11 Origin: Site
Aluminum forgings are objects in which the metal is under pressure and plastically deformed to shape the required shape or suitable contraction force. This force is typically achieved through the use of a hammer or pressure. The forging process creates a delicate grain structure and improves the physical properties of the metal.
The heating means of metal heat treatment are a lot, are the earliest to adopt charcoal and coal as thermal source, and then using liquid and geseous fuel. Electric application makes heating easy to control without environmental pollution. These heat sources can be used for direct heating, but also for indirect heating through molten salt or metal, or even floating particles.
① Purpose and use of quenching:
1. Improve the strength of parts and maintain high plasticity.
2. Improve the corrosion resistance of aluminum forged working below 100°C;
For aluminum forged subject to dynamic load impacts.
Note: When aluminum forged are required to obtain maximum strength, aluminum forgings need to be stored for at least 4 days and nights from quenching to before machining. T4 also means quenching and natural aging, the quenching temperature is about 500~535°C, and the quenching temperature for aluminum-magnesium alloys is about 435°C.
② Purpose and use of annealing:
1. Eliminate forged stress of aluminum forged and work hardening caused by machining.
2. Improve shape.
It is used for aluminum alloy forged that require very stable dimensions during use. Suitable for forging aluminum alloy ZL101, ZL102.
Note: The annealing temperature is about 280~300°C, and the temperature is kept for 2~4h. Generally, aluminum forging are processed after forging or after rough machining.
Jiahangaero indicates that aluminum forgings need each piece to be consistent without any porosity, excess space, inclusions or other blemishes. This method produces components that have a high ratio of strength to weight. These elements are commonly used in aircraft construction.