What is aluminum extrusion?

 　　Aluminum extrusion is used to create aluminum lengths with fixed cross-sectional profiles. By squeezing, very complex cross-sections with excellent strength and surface finish can be created. The working principle of the aluminum extrusion process is to force a metal block called a billet through a mold opening with a cross-sectional area smaller than the steel billet itself.

　　Aluminum extrusion is widely used in construction, automotive and aircraft manufacturing, industrial machinery, and consumer goods.

　　Extrusion process

　　The extrusion process itself is very similar to the old Play Doh Shape Maker. When you squeeze the dough through the press, the flow flows out in the shape of the selected mold. Similarly, the shape of extruded aluminum is the same as the mold opening. By using a powerful hydraulic press capable of applying up to 15000 tons of pressure, aluminum can be extruded into any shape you can imagine.

　　There are two main methods for aluminum extrusion:

　　Direct extrusion

　　Indirect extrusion

　　Direct extrusion

　　Direct extrusion is the most important and widely used method in aluminum extrusion. In direct extrusion, the die head remains stationary and the aluminum billet is forced through the mold using a moving plunger.

　　Direct extrusion is commonly used to manufacture solid bars, bars, and hollow tubes. The design of the mold can be modified to produce various solid and hollow profiles.

　　Indirect extrusion

　　In direct extrusion, the billet moves. In indirect extrusion, the aluminum billet remains stationary, and the plunger moves the mold to apply pressure in the fixed billet. The advantage of keeping the billet stationary is to minimize friction.

　　Design the cross-sectional shape before extrusion begins. The shape and characteristics of extruded metal are carefully calculated to maximize functionality, facilitate assembly, reduce weight, and minimize finishing costs. The unique characteristics of aluminum make it a cost-effective product with excellent functionality and color finish.