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Custom Aluminum Extrusion Manufacturer in China

Author: YiNuo Zhang
Published on: 2024-01-22

“The China Aluminium Extrusion is known for its versatility, precision, and cost-effectiveness. It has gained significant attention due to its quality and affordable aluminum extrusion manufacturing.”

Custom Aluminum Extrusion has emerged as a pivotal process in the manufacturing industry. It offers a unique blend of adaptability, pinpoint accuracy, and economical efficiency in the production of various components. As China is a developed country, known for its strong industrial infrastructure and technological prowess, has become a hub of custom aluminum extrusion manufacturers in the world. 

In this article, we will discuss Aluminium Extrusion and important aspects of this process, its types, benefits, and leading manufacturers in China, like Prolean Tech.


What is Aluminum Extrusion?

Before going in-depth about “Aluminum Extrusion Manufacturer – Aluminum Extrusion Manufacturer in China”, let’s discuss Aluminum Extrusion. 

Aluminum extrusion manufacturing 

Extrusion is a process in which the aluminum alloy material passes through Aluminium Extrusion Dies along with a special cross-sectional profile, using a powerful ram. Then, this aluminum comes out through the opening. Now, it holds the shape of the die. After that, it pulled out along with the runout table.  At this point, the aluminum extrusion process is comparably simple as squeezing toothpaste. As toothpaste comes out from the tube by applying some pressure, it takes on the shape of the opening of the tube. Similarly, aluminum comes out in the shape of a die. The Aluminum Extrusion Dies types as usually available in angles, channels, and round tubes.


Types of Aluminum Extrusion

Depending on the process, aluminum extrusion is classified into two types, such as;

  • Direct Extrusion 
  • Indirect Extrusion

1. Direct Extrusion

It is the simplest production mode for aluminum extrusion. In this process, the die remains stationary. But the ram forces the billet through the die opening. During this process, both the billet and ram move in the forward direction. That is why, this process is also known as forward aluminum extrusion. 

2. Indirect Extrusion

On the other hand, in indirect extrusion, the billet doesn’t move. While the assembly, present on the end of the ram, moves in the opposite direction of the billet. Due to this, the pressure develops, which is essential for the metal to flow through the die. This pressure helps in pressing the harder alloys and smaller cross-section products. Moreover, the lower pressure allows for a lower pressing temperature. Resultantly, it gives a greater extrusion speed and increases productivity.


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Process of Aluminum Extrusion in China

The process of Aluminum Extrusion in China takes place in direct or indirect extrusion. Here the extrusion press available with several power levels, such as at Impol, are in the range of 12.5 to 55-MN. But before starting the extrusion process the cast aluminum rods required to be cut into small pieces. These pieces are known as billets. They decide that the length of each extruded bar will be the same. Consequently, the material will not get wasted. 

Aluminum extrusion process

Aluminum extrusion process

The aluminum extrusion process can be modified according to customer needs. Here, we discuss the six stages of aluminum extrusion.

Stage-01: Preheating of Aluminum Billet and Steel Die

In this stage, the billets are first heated in the gas furnace or induction. This temperature starts from room temperature and goes to extrusion temperature. Moreover, its range varies depending on the alloy and final temperature. From there on, the heated billets must be malleable, in this way, they can acquire the required shape. But they must be firm so, they can sustain the shape even during the transportation process. Then the push bat exerts pressure on these billets and allows them to move towards the die opening. 

Stage-02: Loading of Billet into Extrusion Container

In the second stage, the heated billets, then quickly transfer to the Extrusion press container. Accordingly, they can prevent heat loss. At this stage, the billets are ready to be extruded. Afterward, the ram exerts pressure on them and pushes them towards the opening of the die. 

Stage-03: Extrusion

After passing from the die opening, the billets get into the tool. These die openings can be changed and modified into several shapes and sizes. This stage is just like the cookie press. Here the shaped disc creates several cookie designs. Subsequently, the bars, with the required shape, come out of the press container.

Stage-04: Controlled cooling

Just after Extrusion, the quick cooling of bars, tubes, or profiles, takes place. Hereafter leaving the press, the full bars are then put into the water bath. It guarantees the uniform quenching of heated aluminum. Moreover, this quenching process is essential for the required mechanical properties and adequate microstructure. Thus, to eliminate any danger of material deformation, the cooling process is mandatory.

Stage-05: Stretching of the Bars

After cooling, the bars are cut into the required lengths. During the cutting process, the pullers grab them. These pullers are generally laid over the runout table. They allow the bars to cool down further.  During this phase, the extruded bars go through the strengthening process. This process stretches them and removes the internal tension within the bars and ultimately ensures their mechanical properties.

Stage-06: Cutting and Final Packaging

This is the final stage of aluminum extrusion. In this phase, the strengthened bars are again cut to the required length, which is specified by the customer. So, the aluminum bars have temper T1/T4 properties. But, they need to be with T5/T6/T66 temper.  Furthermore, this aging process again strengthens the bars/profiles or tubes, till they fulfill the mechanical properties of the specified alloy.


Applications of Aluminum Extrusion

Because of its versatility and innovative approach, aluminum extrusion is now widely used in various industries across China. Here are some of its applications enlisted below;

1. Construction Industry

In the construction industry, aluminum extrusion plays a crucial role. It already has found its way to create customized profiles for windows, curtains, doors, and other structural components. This extrusion process gives unique design flexibility, and durability and increases energy efficiency in buildings. 

2. Automotive Sector

Similarly, Aluminum extraction has further defined its ways in the automotive sector. It helps in producing lightweight and durable parts. This leads to better fuel efficiency, and crash resistance and increases the overall performance of the automobile

3. Electronics and Consumer Goods

like the above-discussed applications, aluminum extrusion also plays a very significant role in the world of electronics. It helps to increase the electronic enclosure via effective heat dissipation and EMI shielding. Moreover, it ensures the longevity, lightweight designs, and customization of customer goods. 

Aluminum extrusion parts


Advantages of Choosing Custom Aluminum Extrusion Manufacturer in China

Aluminium Extrusion has its advantages and disadvantages. Here we will discuss diverse applications of Aluminum Extrusion and its advantages for choosing it. 

1. Cost-Effective Production

China has abundant resources of Aluminum. Hence, it plays a very crucial role in cost-effective production widely. It offers the advantage of achieving economies of scale. So, the sheer volume of production helps in massive manufacturing. Consequently, its excess makes it a suitable option and gives production at a very low amount.

2. Technological Expertise

China prioritizes technological excellence. Hence they invest in state-of-the-art extrusion equipment. That ultimately gives precision and efficiency throughout the whole process. Moreover, China’s aluminum extrusion industry is continuously growing. And the ongoing innovations drive technological betterment. It ensures the manufacturers stay at the forefront of extrusion capabilities and meets the new needs of the industry. 


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Summing Up

In summary, custom aluminum extrusion in China plays a vital role in the manufacturing industry. It offers versatility, precision, and cost-effectiveness at wide industrial platforms. China’s abundant resources and large-scale manufacturing facilities also contribute to cost efficiencies. That makes this process, economically feasible. 

So, if you are searching for top-quality custom aluminum extrusion in China, Do not go anywhere, Prolean provides you with the best Aluminum Extrusion Services.  We specialize in low-volume custom extrusion for distinct, small-scale projects. Additionally, we manage large-scale production for standard parts like circular bars, tubes, and square bars.
So, Count on our reliable aluminum extrusion services for both regular and personalized requirements.

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What’s the difference between hot and cold extrusion? 

In hot extrusion, we need to heat the aluminum before shaping it through a die. This makes it easier to shape. On the other hand, cold extrusion shapes the aluminum at room temperature without heating it first. This gives it a finer structure and makes it stronger.

Why select aluminum for extrusion?

Selecting aluminum for extrusion offers numerous advantages. With its lightweight nature, impressive strength, and corrosion resistance, aluminum stands out as an optimal material for a wide range of applications.

What are the benefits of aluminum extrusion?

Aluminum extrusion brings several advantages, including versatility, lightweight design, cost-effective production, high strength-to-weight ratio, corrosion resistance, excellent thermal conductivity, recyclability, and ease of machining and fabrication.


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