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How Are Aluminium Windows and Doors Made?

Learn about the manufacturing process of aluminum doors and windows, from design to material preparation, from manufacturing to final installation of the finished product.

For their strength and sleek design, as well as exceptional functionality, aluminium windows and doors have become popular in modern architecture. The manufacture process of these products includes a range of complex steps to meet high quality standards, energy efficiency and pleasing to the eye.

In explaining the housing clients, architects and constructors how customized aluminium windows and doors are made can provide insight as to the benefits of the material, and how the manufacturing process facilitates the end product's performance and longevity.

Let IMLANG's innovative window and door designs inspire your next project, combining style and durability with ease.

Before any of that, though, in this article we shall take a look at how aluminum windows and doors are made step by step, right from designing to material preparation and from manufacture to final installation ready product.

1. Design and Planning

Aluminum windows and doors are manufactured by designing and planning with care. The first step to spec'ing windows and doors is a collaboration between architects, manufacturers, and customers that set the specifications for the windows and doors based on the desired use, design style, and function.

Key Design Considerations:

  • Dimensions: Standard size windows and doors or custom size will depend on the dimension of the opening. Great attention to detail needs to be taken when installing, and precise measurements are needed to ensure a perfect fit.
  • Style and Aesthetics: The overall aesthetic of the building is kept in mind during the finalizing of design of the frame, glass and hardware. For example, an architect would have to choose modern minimalist frames for a modern building, while traditional homes might need more decorative profiles.
  • Energy Efficiency: To increase the energy efficiency of the windows and doors, thermal insulation possibilities are included in the window and door design, including double glazing or thermal breaks in the manufacturers. This is a critical step to achieve the modern energy standards.
  • Security Features: It is designed against safety and security considerations as well. For increased security of the window or door, advanced locking systems, reinforced glass and impact resistant frames can be built into the design.

Once we have designed specs, a detailed blueprint is made to guide the production process.

2. Material Selection

However, most aluminium windows and doors are made from aluminium extrusions that are manufactured by forcing aluminium through a die to produce long profiles with specific cross sectional shapes. It is the quality of the aluminium that is used that is critical to the overall performance and expected life of the product.

Aluminium Material Properties:

  • Durability: It is lightweight, resistant to corrosion and very durable, therefore aluminium is perfect for exterior applications.
  • Strength-to-Weight Ratio: In aluminium, we find a lightweight and strong material, which also means bizarre frames could be thinner and bigger glass areas could be enabled.
  • Recyclability: Aluminium is one of the most recyclable of materials and so is a very environmentally friendly choice for windows and doors.

According to the specific performance of the windows and doors it is that the material is chosen. Larger doors or windows need extra structural integrity and can use, for example, high strength aluminium alloys.

Types of Aluminium Used:

  • Standard Aluminium: This is the most used window and door material for residential and commercial applications. Superior strength and economy have made it durable and cost effective; it can be treated for superior corrosion resistance.
  • Thermally Broken Aluminium: The plastic barrier between inner and outer parts of the frame helps to reduce heat transfer, so this type is very energy efficient.
  • Anodized Aluminium: Aluminium which has undergone an electrochemical process to thicken its natural oxide layer creating an extra resistance to corrosion, scratches and fadings.

3. Aluminium Profiles Extrusion

The second stage includes extrusion of aluminium profiles with processing of raw material to get frames, sashes and other parts of windows and doors. Extrusion is a very precise process of forcing aluminum billets at high pressure through a die and thereby creating a shape.

Extrusion Process Overview:

  • Heating: To make them malleable, aluminium billets (ingots) are heated to a certain temperature.
  • Extrusion: Then the heated aluminium is forced through a die that shapes it up to the profile of your choice. It designs the shape of the die based upon the design of the window or door.
  • Cooling: After that, the extruded profiles are cooled in a controlled environment to protect from shapes.
  • Cutting to Length: Aluminium profiles that are extruded are then cut to desired length for use in assembly of windows and doors.

The extrusion process is highly customizable, and manufacturers can custom create profiles that are not just functional, but pleasing to look at as well. The aluminium frames produced are light and strong, and a great support for big glass panels.

4. Surface Treatment and Coating

Aluminium profiles are extruded, cut to size and then goes through various surface treatment processes, which enhance durability, aesthetics, and resistance to the environment. Besides protection against corrosion, the surface treatment improves the appearance of the material.

Painting: For those who like a high gloss or a custom finish, painting is an option. The aluminium profiles are primed and painted and then baked through, to give a good even finish.

IMLANG Aluminium Windows And Doors Manufacturer

5. Cutting, Drilling, and Machining

Once the aluminium profiles are treated they are only proceeded by cutting, machining, drilling, openings so the hardware, locks, hinges, and glass installation are assembled precisely.

Key Machining Processes:

  • Cutting: Based on the dimensions specified during the design stage we cut the profiles to the required lengths. The cutting process has high accuracy to guarantee the smooth contact of the components.
  • Drilling and Boring: Screws, hinges, handles and locks; their positions are all accommodated by holes drilled in their positions in the profiles. These openings are just large enough to position the window or door so that it can be assembled correctly.
  • Routing: Routing means carving certain parts of the frame for a certain design or feature (for example, a groove for weatherstripping or reinforcement).

Machined parts are designed so the parts all fit together and the door or window will operate smoothly when assembled.

6. Glass Installation

Before aluminium windows and doors can be sold, the glass panes must be installed. We found glass that is single, double, or even triple glazed depending on design and specs for added thermal insulation and noise reduction.

Types of Glass Used:

  • Single Glazing: Primarily used for interior windows, and in temperate regions.
  • Double Glazing: Made up of two glass panes spaced by an insulating gap packed with air or gas (such as argon). Such configuration helps to minimize the transfer of heat and therefore improves energy efficiency.
  • Triple Glazing: Just like double glazing but with three panes of glass for even greater thermal insulation and soundproofing.

Aluminium frame slots tightly fitting glass panes are held in place with rubber seals or gaskets. This also prevents the leakage of air, as well as water.

7. Assembly of Window and Door Components

Once the frame, the glass, the seals, the hardware have been made individually, they are assembled into window and door units. At this stage all the parts are put together in a carefully controlled environment.

Key Assembly Steps:

  • Frame Assembly: The extruded profiles are joined together to assemble the aluminium frame. With the design, the corners are normally joined through use of corner brackets or welding.
  • Glass Fitting: The frame consists of glazing beads or some other fastening method that holds the glass panes into it.
  • Hardware Installation: The hardware like locks, handles, hinges etc are fixed. Functional and Design are carefully overlooked in the selection of these elements to complement the entire aesthetic of the window or door.
  • Sealing: The last step in assembly is the application of weatherstripping or seals in between the frame to make better thermal insulation and keep air or water from leaking.

8. Quality Control and Testing

Aluminium windows and doors pass rigorous quality control and testing before being shipped out to customers, against industry standards for performance, safety and aesthetics.

Key Tests Performed:

  • Strength Testing: Wind pressure, impact, and other stresses are seen as improvements to windows and doors during testing.
  • Energy Efficiency Testing: Window thermal performance is tested to confirm that it meets thermal energy efficiency standards such as those for double and triple glazed windows.
  • Water and Air Tightness Testing: In heavy rainfall and wind prone regions specifically, it's critical that windows and doors are watertight and airtight for long term performance.

After they have passed all tests, windows and doors are packaged and ready for delivery.

Conclusion

The manufacturing process of customized aluminium windows and doors is complex, which starts with design followed by installation. This meticulous, careful manufacturing process is resulting in the key aluminium advantages like strength, durability, energy efficiency and sleek design.

IMLANG offers the perfect blend of aesthetics and performance—redefine your space with our top-tier window and doors.

At IMLANG aluminum windows and doors manufacturer, we are committed to doing everything right. We make every window and door according to size, taking measures to bring your vision to life as much as possible. By combining high-quality metals with state-of-the-art facilities, we achieve visually stunning, super safe and impressively durable results every time.

We produce a variety of windows (including casement windows, vertical sliding windows and electric lifting windows), as well as various door types (such as sliding doors, folding doors). No matter what type of window or door you are looking for, trust our team to provide the quality aluminum windows and doors you need for your next project.

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