Understanding Purification Aluminum Profiles: A Complete Overview

Purification aluminum profiles mainly come in two types: aluminum alloy and cast aluminum alloy. They’re made from aluminum ingots with a purity of up to 92%, enhanced with alloying elements like carbon, magnesium, silicon, and sulfur. These additions help boost the material’s strength, hardness, and wear resistance.

 

What Are Purification Aluminum Profiles?

Explosion diagram of purified aluminum profile

 

Closed Loop Extractor mainly come in two types: aluminum alloy and cast aluminum alloy.

They’re made from aluminum ingots with a purity of up to 92%, enhanced with alloying elements like carbon, magnesium, silicon, and sulfur. These additions help boost the material’s strength, hardness, and wear resistance.

During the production and processing of aluminum, issues like oxidation, corrosion, and contamination can arise. That’s why purification treatment is essential—it improves the quality, durability, and overall performance of the aluminum profiles.

Why Is Purification Necessary?

Real Project Case: Zhuhai International Health Port

During the production process, aluminum profiles are inevitably exposed to various contaminants—such as dust, grease, and fingerprints. Without proper purification, these pollutants can negatively impact both the appearance and performance of the finished product.

Purifying aluminum profiles is crucial. It enhances surface smoothness, ensures a more uniform oxide layer, reduces color variation, improves coating adhesion, and ultimately extends the lifespan of the material. Additionally, purified aluminum profiles are more environmentally friendly and safer to use.

As a key component in modern construction materials, aluminum profiles are held to increasingly high manufacturing and quality standards. Purification is not just a technical step in production—it’s a vital process that directly affects the final product’s quality and reliability.

How Are Purification Aluminum Profiles Treated?

Production Workshop

There are several treatment methods used to purify aluminum profiles, including mechanical polishing, acid cleaning, alkaline cleaning, and anodizing. Each method serves a specific purpose and is chosen based on the type of aluminum and the desired performance or finish.

Different aluminum profiles may require different purification processes to achieve optimal results in terms of appearance, durability, and functionality.

What Are the Advantages of Purification Aluminum Profiles?

Purification aluminum profile combination diagram

How Do They Compare to Traditional Aluminum Profiles?

Compared to conventional aluminum profiles, purified (or cleanroom-grade) aluminum profiles offer a range of significant advantages that make them ideal for high-performance applications:

Extremely Low Impurity Content – With purity levels exceeding 99.9%, these profiles meet the highest quality standards.

No Hydrogen Substitution – This prevents hydrogen-induced cracking, ensuring better material integrity.

Excellent Formability – Ideal for producing high-precision components.

Superior Electrical and Thermal Conductivity – Makes them suitable for demanding electrical and thermal applications.

Outstanding Corrosion Resistance – Ensures long-lasting durability even in harsh environments.

Excellent Weldability – Reduces welding defects and improves joint quality.

Good Machinability – High cutting performance makes processing faster and more efficient.

Great Ductility – Suitable for deep drawing and stamping applications.

Enhanced Surface Finish – Ideal for surface treatments such as anodizing or coating.

Environmentally Friendly Refining Process – Green and pollution-free, supporting sustainable manufacturing.

These advantages make purification aluminum profiles a preferred choice in industries that demand high precision, cleanliness, and performance—such as electronics, aerospace, medical equipment, and cleanroom construction.

What Are the Common Types of Purification Aluminum Profiles?

There’s a wide variety of purification aluminum profiles used in cleanroom construction and related applications. Some of the most common types include: U-channels, outer cylindrical profiles, inner arc profiles, base frames, angle aluminum, double-seal door frame profiles, single door profiles, T-beams, F-channels, double-R channels, single-R channels, I-beams, H-shaped profiles, inner corners, outer corners, door edging profiles, window frames, small center-bar profiles, center-bar hanging beams, goblet-shaped hanging beams, FFU keels, and more.

Each profile serves a specific purpose in structure, sealing, or support, depending on the cleanroom or architectural design requirements.

Purification of aluminum profile samples

What are the common specifications?

According to the thickness of the purification board, there are specifications such as 50mm, 75mm, and 100mm, and we usually use 50mm series aluminum materials.

Installation effect

Specifications and dimensions

Surface Treatment Methods and Their Characteristics

There are three common surface treatment methods for purification aluminum profiles: anodizing, electrostatic spraying, and electrophoretic coating.

Each method offers unique benefits in terms of durability, appearance, and corrosion resistance, helping to enhance the performance and lifespan of the aluminum profiles.

1. Anodizing

After surface pretreatment, the aluminum profile undergoes anodizing under controlled conditions. This process forms a dense, porous, and strongly adhesive layer of aluminum oxide (Alâ‚‚O₃) on the surface, giving the metal a natural shine, smooth texture, and attractive appearance. The anodized layer bonds fully with the underlying aluminum substrate, so it won’t crack, peel, powder, or flake off.

Anodizing also protects the aluminum from harsh weather and harmful UV radiation. It enhances durability by providing excellent resistance against corrosion from acids and alkalis, effectively safeguarding the aluminum profile’s surface.

2. Electrostatic Spraying

This method uses a friction spray gun that charges powder particles positively as they are expelled by accelerated airflow. These charged particles are attracted to the negatively charged aluminum profile, creating a strong electrostatic adhesion. Afterward, the coating is cured at high temperatures to improve adhesion strength and prevent paint film peeling.

The resulting tough surface coating significantly enhances oxidation and corrosion resistance. It also allows for color matching with wall panels or other materials, providing a more uniform and aesthetically pleasing finish.

3. Electrophoretic Coating

After anodizing, aluminum profiles can receive an additional electrophoretic coating. In this process, a resin film forms on the anodized surface via electrophoresis, bonding to the oxide layer to create a new composite film.

This coating inherits and amplifies the benefits of anodizing while compensating for its hardness limitations, resulting in a tougher and more protective surface.

Key Applications and Industries

Purification aluminum profiles are mainly used in cleanroom construction, purification engineering, cleanrooms, operating room renovations, sterile room setups, and microbiology laboratory interiors.

They are essential in industries such as healthcare, food processing, electronics, pharmaceuticals, biological research, and new energy or aerospace technologies—anywhere strict dust-free and sterile environments are required.

Case Study: Sun Yat-sen Memorial Hospital, Sun Yat-sen University

 

Why Use Purification Aluminum Profiles in Cleanrooms?

A cleanroom is a controlled environment with very strict limits on bacteria and particle concentrations, commonly used in medical device manufacturing, pharmaceutical production, and other industries requiring extremely high cleanliness.

Case Study: Guangdong Nanshan Pharmaceutical Innovation Research Institute

This means the building materials inside cleanrooms must have excellent cleanliness and contamination resistance. Compared to ordinary aluminum profiles, purification aluminum profiles designed for cleanrooms offer these advantages:

1. Smooth, well-finished surfaces with no burrs or scratches, reducing potential contamination sources.

2. Strict material selection to eliminate impurities and minimize particle emissions.

3. High processing precision to reduce gaps in connections.

4. Corrosion-resistant surface treatments to extend service life.

5. Non-toxic, odorless, and free of VOC emissions to maintain a clean environment.

6. Thoughtful structural design that facilitates easy cleaning and disinfection.

7. Quick and easy assembly to shorten construction time.

8. Acid- and alkali-resistant surface treatments for wider application.

9. Uniform, attractive colors that enhance the overall environment.

10. High strength yet lightweight, which helps with vibration reduction.

In short, cleanroom purification aluminum profiles are specially customized to meet the rigorous demands of cleanroom environments. Their unique manufacturing process and materials effectively prevent bacterial contamination and reduce impurity release.