Aluminum Profiles

Chongqing Heavy Aluminum New Material Technology Co., Ltd is a professional aluminum material manufacturer and supplier with more than 10 years production and experience.
On August 8, 2018, the company's new factory was constructed and put into operation in the new industrial park of Longshui Town, Dazu District, Chongqing with a registered capital of 2018 million CNY.
Covering an area of 35 acres, it is a modern enterprise integrating R&D, design, production, sales and service. The company is committed to the curtain wall aluminum veneer, composite aluminum veneer and other metal decorative materials and aluminum profile spraying processing. Our main products include aluminum alloy plate, imitation stone Board, imitation wood grain board, imitation ceramic board, thermal insulation integrated board, aluminum ceiling, aluminum square pass, aluminum veneer, etc. These products are widely used in aviation aerospace, electronics, electrical, machinery, shipbuilding, transportation, building materials decoration and other fields. Over the years we have earned good reputation in the corporate field with our quality works and well dedicated team. Now we are one of the leading Companies in the field of aluminum. Our products are widely accepted in domestic and exported to various countries in the world.

Suitability of aluminum for hot extrusion
Hot extrusion of aluminum takes place at very high temperatures of up to 500 °C (~930 °F), at which the aluminum becomes soft and easy to form. The hot-extrusion process is used to create large workpieces such as airplane landing gear, facade profiles, bicycle frames, and more. The process is fast, but the surface condition of the product may require further processing.

Energy saving
Hot extrusion of aluminum requires significantly lower temperatures compared to the temperatures at which the steel hot extrusion process takes place (approximately 1600 °C, i.e. 2900 °F). Also, the pressure required for cold aluminum extrusion is much lower than for cold steel extrusion. Both of these factors make a significant contribution to the energy savings of extruding aluminum parts.

Suitability of aluminum for cold extrusion
Cold extrusion takes place at lower temperatures (less than 150 °C, about 300 °F), at which the aluminum remains solid but is forced through the molding hole under high pressure. This process is used to create thin walls of aluminum alloys, such as radiators or profiles for windows and doors. Cold extrusion typically takes longer, but the surface quality and accuracy of the shape can save time because there is no need for post-processing.

The possibility of optimum: Warm aluminum extrusion
The process takes place at an intermediate temperature, which can be the answer to finding a compromise between fast hot extrusion and a slower but more accurate cold process. The choice of temperature depends on the specific needs of the manufacturer and the properties of the final product.

Variety of shapes and sizes
Aluminum extrusion makes it possible to create a variety of products such as tubes, profiles, wires, sheets, plates, and others. The shapes can be round, square, rectangular, hexagonal and much more complex. By varying the size and shape of the outlet, and thus the pressure of the plunger, different product sizes can be achieved, from very thin to very thick. The process is suitable for manufacturing long lengths of product: it is possible to set up production of metal parts up to 100 meters long and even longer, which allows for the production of large metal structures. When combined with other metalworking methods, the availability of possible product shapes increases many times over.

High precision and surface quality of products
This factor is also considered an advantage of the aluminum extrusion process, although the accuracy of the extrusion shape reproduction is high enough for most applications, it is usually inferior to the accuracy of machining parts on CNC machines. However, due to the ability to improve accuracy using other metalworking methods and in combination with the following advantages of the aluminum extrusion process, this process is preferred for mass production.

Increased strength
Products made by aluminum extrusion typically have increased strength and therefore wear resistance. This is because the material is formed under pressure to produce a homogeneous structure with no cavities, chips, or pores.

Low material loss
The nature of the process is such that it does not leave any excess material, such as chips and dust, which not only contributes to the economics of production, but also improves safety and reduces environmental impact. Combined with the low reject rate of a well-tuned production, this factor makes a significant contribution to its cost-effectiveness, which should be mentioned separately.

Efficiency and cost-effectiveness
Compared to other methods of aluminum processing, extrusion is superior to all other methods of processing this metal because extrusion can be easily adapted to assembly line production. The combination of these advantages makes the aluminum extrusion process very popular in production, as it allows for the production of a large number of parts with high precision in a short time. The high quality of the products is also guaranteed by the use of modern high technologies.

Processability
The use of automated production lines with pressure and temperature control by sensors ensures high efficiency of the extrusion process and a high degree of reproducibility of results. The use of modern computer control on conveyor lines, where robotic units perform monotonous heavy tasks, ensures the accuracy and efficiency of production. By calculating the required conditions using the processing of previously obtained data, it is possible to quickly find the optimal conditions for the introduction of new production lines.

Hollow beam
Based on the name alone, hollow beam aluminum profiles simply refer to a hollow beam of aluminum which does not have specific cross-sections. These are usually found as part of modular installations, especially in constructional design.
Hollow aluminum beams can come in a wide variation of shapes, with specific sub-classifications for each. These may come in the form of rectangular beams, square-shaped, or one with a hollow top/bottom. The result is a beam that can be used as part of a support framework for buildings, bridges, and other types of industrial applications. They are highly useful in providing horizontal support, especially in the face of heavy loads.

Square profile
Square aluminum profiles can be classified as belonging to a subsection of hollow-beam aluminum. They're used in similar applications to the hollow beams - the most distinct difference lies in that they can provide more stable support.
Square profiles can be found as part of wall load bearings, as well as support columns and pillars. They can be made either seamlessly or non-seamlessly, depending on the manufacturing process. This involves a non-time-consuming process of continuously flattening an aluminum sheet and joining the corners so as to form a square. A high-pressured piercing point is passed through the middle of the profile in order to smoothen out the inner edges.

SD aluminum profile
Aluminum profiles are useful not only in larger-scale applications, but in smaller-scale ones. In fact, they're also widely-applied as part of a window's framing. Apart from the lightweightness and flexibility of aluminum, its resistance to corrosion is also one reason why they can serve as stable window frames.
SD profiles make the best choice for sliding window frames. Windows are constantly exposed to different elements that are found in the external environment, such as dust, rain, and high temperatures. Both the SD profile's sliding functionality and ability to resist different forms of weathering make it the best choice.

RCW profile
RCW profiles are abundant in high-rise buildings, and are usually applied to curtain walls, or mullions. These usually do not offer any structural function, as their primary use is for providing a barrier to prevent the entry of environmental elements inside a building.
Curtain walls are usually aluminum-framed and come in different sizings. It's important that these profiles contain the necessary components in sealing off unwanted objects from entering the interiors of a building space. This is one of the main drivers behind why RCW profiles are usually fitted with other materials that help prevent leakages from occurring.

Door section
Also named as the ED section, aluminum door sections are profiles used in heavy-duty glass doors for buildings. They are part of the entire mechanism of push doors and often work as an entire system.
Glass doors that come with a push mechanism are found in different types of commercial spaces. Its unmistakably classic design doubles down on the form, but also on the functionality. Aluminum door sections greatly secure the glass material in place, to prevent it from falling, or toppling over so suddenly.

Louver profile
A louver refers to an arrangement wherein slats are attached at regular horizontal intervals from one another at an angle. They come in the form of window blinds, or door shutters. Because of the structure, louvers are mainly used for the passage of natural lighting or ventilation. They also help keep debris from entering inside a building.
Aluminum louvers can be manufactured in different customized designs, depending on the building requirements. The aluminum material, while being able to let cool, natural ventilation inside, also aids in keeping out water. It also adds a layer of privacy to a building space, since the angled slats greatly diminish the visibility.

T-section
The T-section profiles are exactly just that - a T-shaped aluminum extruded product that gives support in different directions. T-sections specifically contain components such as the span, horizontal flanges, and vertical webs.
The structure of this type of aluminum profile implies that it can be found in corners and as part of a truss network. It can be easily fitted with other aluminum profiles like the hollow beam and the square profile. To add further durability, fittings are also attached to T-sections as a way of also improving the level of support.

Prepare extrusion die
The first step is to make a round-shaped die or use an existing one if available. Preheat the die to precisely 450-500ᵒC before initiating the extrusion process. This helps to ensure that the metal passes through evenly and maximizes the die's longevity. You can load the die into the extrusion press after the preheating procedure.

Pre-heat aluminum billet
The next thing is to cut the cylindrical billet from a stretched log of material, then preheat the billet in an oven to 400-500ᵒC. This technique prepares the billet, making it malleable for the operation. It ensures that it is not molten.

Move the billet to the extrusion press
Transfer the billet into the press mechanically after preheating it. However, add lubricant to it before filling the billet into the press. In addition, ensure to put a release agent to the extrusion ram. Consequently, this helps to prevent the billet and ram from joining together.
At this point, the malleable billet is ready in the extrusion press. Here, the hydraulic ram can apply precisely 15,000 tons of pressure. This pressure forces the malleable billet into the container. The aluminum material stretches till it fills the container's walls.

Press-up extruded material against the die
The aluminum material that fills the container's walls gets pressed against the extrusion die. You need to apply pressure to the material continuously. Hence, the extruded material emerges through the die opening fully formed.

Quench the extrusion
A puller grasps the extrusion, holding it in place after exiting the press. It safeguards the extrusion as it leaves the press while the alloy undergoes a "quenching" process as it moves along the table. The profile cools off evenly with a full water bath or fan.

Shear the extrusion to the table length
Once the aluminum extrusion makes the total table length, use a hot saw to shear it. However, note that temperature is essential at each step of the extrusion method. Despite the quenching process, the extrusion is not always fully cooled off yet.

Cool extrusion to room temperature
After completing the shearing process, move the extrusions to a cooling plain from the runout table. The profiles remain there till they achieve room temperature. As soon as they reach room temperature, stretching begins.

Transfer extrusions to the stretcher and stretch them into alignment
At this stage, you will discover certain twists in the shape of the extruded aluminum that need correcting. It would help if you had a stretcher to repair these twists. Hold each profile manually at different ends while pulling them till they are entirely straight. This procedure helps to adjust the extrusion to the desired specification.

Transfer extrusion to the finish to the finish saw and cut them to length
At this stage, when the extrusions are fully straightened and work hardened, you can now move them to the saw table. The next thing is for you to cut the extrusions into desired lengths. These lengths are usually between 8-21 feet. Move these extrusions to the oven for aging to the proper temper (T6 or T5) after completing the sawing process.

Carry out secondary operations (heat treatment, fabrication, & surface finishing)
Upon completion of the extrusion process, you can enhance the properties of these profiles by treating them with heat. After the heat treatment, consider fabricating the extrusions if there are dimensions that need correction. In addition, adding surface finishes helps to enhance the aesthetic appearance and corrosion resistance properties of the extruded aluminum.