La fonte d'aluminium : Guide détaillé de l'aluminium pour la fonderie II
Avr 10, 2025
Summary: This article introduced aluminum casting, its properties, common aluminum casting processes, and choosing the right process for a project. Are you looking to make accurate parts with cast aluminum? Then let us help you to make products that are strong and of high quality.
An aluminum casting is a lightweight part made from aluminum material and/or other materials using an Aluminum Casting process. It is an integral part of industries that desire the durability, strength, and lightweight of aluminum and compatibility with complex product design.
There are several aluminum casting processes, each with a unique setup and requirements. As a result, they are responsible for casting Pièces en aluminium avec des propriétés différentes. Cet article présente le moulage en aluminium et explique comment choisir celui qui convient à votre projet.
1. Die Casting
Die casting is the most popular aluminum casting process for casting aluminum parts. There are two processes: low-pressure die casting and high-pressure die casting, with the latter being the most suitable for the material.
Die casting involves preheating the aluminum and injecting it under high pressure into a die mold designed according to the intended product. On cooling, the cast aluminum part is removed from the die, and the cycle is repeated after the die cools down.
One of the advantages of die casting is that the die-casted aluminum has excellent electrical and thermal conductivity. Furthermore, they are strong and resistant to corrosion, wear, and heat.
Die-casted aluminum parts are applicable in the mass production of parts in culinary, aerospace, and medical industries.
2. Sand Casting
Moulage au sable is the most common casting process in manufacturing. It is applicable here due to the ability of the sand to withstand elevated temperatures.
The process involves preparing a mold using sand. Afterward, the aluminum material is heated, and the molten aluminum is poured into the sand mold. On cooling, the casted aluminum part is removed.
Sand cast aluminum has low dimensional accuracy and a rough surface finish. Therefore, it most time requires post-processing options such as trimming. The aluminum casting process applies to making aluminum gears, fittings, gas and oil tanks, etc.
3. Permanent Mold Casting
Permanent mold casting is similar to die casting. However, the difference between the processes is the mechanism of injecting the aluminum into the mold. Unlike die casting, permanent mold casting uses gravity instead of high or low pressure to fill the mold. As a result, it lessens turbulence during the injection process.
Aluminum casts made with this process has stronger with a good surface finish and close dimensional accuracy. The process applies to making aluminum parts in the automotive and aircraft sectors.
How To Choose The Right Aluminum Casting Process?
Each casting process has its advantages and shortcomings. To choose the right process for your project, consider the following factors:
Design Complexity
Speed of Production
High Quantity
Prototyping
Strength and Surface Finishing
Optional Finishes For Casting Aluminum Parts
Finishing processes can be for aesthetic or functional purposes. Below are a few finishing processes you can consider:
Powder Coating
Painting
Electroplating
Anodizing
Advantages Of Aluminum Cast
Fine Surface Finish
Complex Shapes
Lightweight Parts
Common Applications Of Casting Aluminum
1. Medical Industry
Medical part manufacturers rely on aluminum casts for their strength and lightweight in making prosthetics, surgical trays, etc. Aside from that, the process is suitable for making complex and accurate shapes which the industry is known for. Also, aluminum is the right material due to its corrosion resistance since much medical equipment comes in contact with body fluids.
2. Automotive industry
Automotive parts manufacturers rely on aluminum casts for their lightweight properties without compromising strength and durability. As a result, it has improved fuel efficiency. Furthermore, making automotive parts with complex shapes with the aluminum casting process is easier. Aluminum casts are suitable for making parts such as brakes and steering wheels.
Conclusion
Aluminum cast are parts made from aluminum and other materials using one of the several casting processes. They are strong, durable, lightweight, and important in industries such as aviation and automotive.