Differences between aluminum alloy die - casting parts and aluminum extrusion parts

There are many application fields of aluminum profiles and die casting aluminum alloy parts. Today Sieg-Huao will talk about the differences between aluminum alloy die - casting parts and aluminum extrusion parts to give you a specific knowledge of aluminum parts.

Aluminum profile is commonly used for screen, aluminum Windows and etc. It's a process of extruding, that is, the raw material is melted into liquid in the furnace and then to be extruded into the mould. It can squeeze out many types of aluminum profiles with different shapes of sections. The main properties of strength, hardness and abrasion resistance are according to GB6063. The advantages include: light-weighted, anti - rust, fast design change, low mould input, and vertical elongation up to 10 meters. The aluminum profile has bright and matte appearance, and its treatment process adopts anodic oxidation treatment, and the surface treatment oxide film reaches a thickness of 0.12m/m. The wall thickness of aluminum profile is chosen according to the optimization of product design. It is not the thicker the better in the market. The thickness is between 0.5mm and 5mm. To the untrained eye, the thicker the stronger is a wrong opinion.

There are some difficult defects to overcome regarding to surface quality of aluminum profile: warping, deformation, black line, concave and white line. The designer’s level and reasonable mold design and manufacturing process can avoid such obvious defects. Inspection of defects shall be conducted in accordance with the inspection method prescribed by the state, i.e., visual range 40-50cm to identify defects.

Aluminum profile is widely used in furniture: screen frame, various hanging beams, table legs, decorative strips, handle, wire chute, cover, chair pipe, etc., can be designed and used in a variety of ways.

Although the aluminum profile has many advantages, but there is also unsatisfactory factors. 

Without oxidation treatment aluminum profile is easy to rust which can lead to performance degradation, longitudinal strength than iron products. The abrasion resistance of oxidation layer in the surface is not as good as that of plated one and is easily scratched. And also the cost is relatively 3 ~ 4 times higher than that of iron products. 

Compared with the processing methods of die-casting alloys and profiles, the equipment is different. Its raw materials are aluminum ingots (about 92% of the purity) and alloy materials, which melt through the furnace and enter the mould forming in the die-casting machine. Die-casting aluminum products can be designed in the shape of toys, with different shapes and convenient connection in all directions. In addition, it has high hardness and can be mixed with zinc to form zinc aluminum alloy. 

On the other hand, die - casting aluminum production process, there should be a mold can be produced, its mold cost is very expensive, than injection mold and other mold. At the same time, mold maintenance is very difficult, when the design error difficult to reduce material repair.

Disadvantages of die - casting aluminum: each production process should be more, low cost. The cost of polishing products with complex production cycle is about 3-4 times higher than that of injection parts. The screw hole should be larger (4.5mm in diameter) for continuous relay stabilization. 

Scope of application: the foot of the platform, the connecting parts of the platform, the decorative head, the aluminum profile sealing parts, the table and the tea table top bracket, etc., the scope is very extensive.