How to Manufacture Aluminum Square Tubes?

Aluminum square tube is a common metal product, widely used in construction, decoration, machinery and other fields. So how to manufacture aluminum square tubes is what people want to know, and the following is about the production process of aluminum square tubes.

1. Preparation of raw materials

The raw material is usually high purity aluminum alloy, which can get the square tube with high strength. Therefore, we need to melt aluminum ingots to get aluminum liquid, and then through the removal of impurities, degassing and other treatments to get high purity aluminum liquid. Aluminum liquid will be added with other metal elements through casting to get aluminum alloy rods.

2. Aluminum Extrusion

Aluminum rods are heated to a temperature that reduces their hardness (around 600 degrees Celsius). It is then cut to the appropriate length in a preheating machine and mechanically pushed into an extruder to be extruded. Aluminum rods in the extruder are extruded through the orifice of the die from solid to liquid under high temperature and high pressure force. The cross-sectional shape of the aluminum square tube is formed. In the process of aluminum extrusion, attention needs to be paid to parameters such as extrusion speed, temperature and pressure. This will ensure that the size and surface quality of the aluminum square tube meet the requirements.

Here are the process of the aluminum extrusion：

3. Surface treatment

After completing the aluminum extrusion process, surface treatment is also needed. Aluminum square tube surface needs to be anodized surface treatment. This can increase its corrosion resistance and hardness. Anodic oxidation is to dip the aluminum square tube into the tank containing electrolyte, through the role of the current. A layer of oxide film is formed on the aluminum square tube. And the thickness and color of the oxide film can be adjusted by controlling the current and immersion time.

4. Cutting and quality inspection

The surface treated aluminum square tube is cut according to the requirements of the construction project to get the required length. After cutting, it needs to be tested for strength, surface and weight. Its mechanical properties and surface are tested by instruments to see if it meets international standards.

In summary

the production process of aluminum square tube includes the steps of raw material preparation, aluminum extrusion, surface treatment, cutting and quality inspection. Making good quality aluminum square tubes requires careful quality control and good work in every step of the process. How to make more efficient and good quality aluminum square tubes has always been people’s hope. In the future with the updated technology, there will be a better way to make it.

Hugh Aluminum is an aluminum extrusion manufacturer based in China. We manufacture aluminum profile products including aluminum square tube ， aluminum T-slot profile, aluminum deck, aluminum fence, aluminum doors and windows, aluminum round tube. We offer large quantity of aluminum building materials and factory price.