Aluminum Alloy Die Casting Surface Treatment Comprehensive Analysis and One-Stop Service

In the vast field of modern manufacturing, aluminum alloy die castings have become indispensable basic parts in many industries with their excellent comprehensive properties such as high strength, low density, good casting performance and excellent dimensional accuracy. From automobile manufacturing to electronic equipment, from aerospace to daily consumer goods, aluminum alloy die castings can be seen everywhere. However, in order for aluminum alloy die castings to give full play to their performance advantages in practical applications and meet the appearance and protection requirements in different scenarios, the surface treatment link is crucial. This article will deeply explore the common basic surface treatment methods of aluminum alloy die castings, such as painting, powder coating, etc., and introduce Selection Hardware as a professional aluminum alloy die casting manufacturer. The one-stop service covers the entire process from aluminum alloy die casting production to surface treatment and assembly and shipment.

Why do aluminum alloy die castings need surface treatment?

Although aluminum alloys have many excellent properties, in the natural environment, their surface easily reacts with oxygen to form a layer of aluminum oxide film. Although this film can provide initial protection to a certain extent, it still cannot meet the requirements of long-term protection and beauty in complex industrial environments and harsh use conditions. Through surface treatment, not only can the corrosion resistance, wear resistance and weather resistance of aluminum alloy die-castings be significantly improved, but also the physical properties such as surface hardness, conductivity and insulation can be improved according to different needs, giving the products a rich and diverse appearance color and texture, greatly expanding the application range of aluminum alloy die-casting products.

Painting

Painting is one of the most commonly used surface treatment methods in the field of aluminum alloy die-casting. The principle is to use a spray gun to evenly spray liquid paint on the surface of die-cast aluminum. After the solvent in the paint evaporates, the resin and other film-forming substances solidify to form a continuous protective film.
Advantages of spray painting
1. Rich color selection: For customized aluminum die-casting products, spray painting can provide almost unlimited color options to meet the diverse design needs of customers. Whether it is bright and eye-catching bright colors or low-key and calm dark colors, they can be perfectly presented through the spray painting process, adding a unique visual charm to the product.
2. Good protective performance: High-quality spray paint coatings can effectively isolate air, moisture and corrosive media from the contact with the aluminum alloy surface, significantly improving the corrosion resistance of die-castings. In applications such as automotive aluminum alloy wheels, spray painting not only plays a decorative role, but more importantly, it protects the wheels from road salt, mud and water erosion, extending the service life.
3. Surface flatness and glossiness: The spray painting process can make the surface of aluminum alloy die-casting parts obtain good flatness and glossiness. Through fine spraying operations and appropriate coating formulas, different gloss effects such as high gloss, semi-gloss, matte, etc. can be achieved to meet the requirements of different products for appearance texture.
Application scenarios of spray painting process
Spray painting is widely used in various types of aluminum alloy die-casting products with high appearance requirements. In the field of household appliances, such as refrigerators and air conditioners with aluminum alloy shells, spray painting can give the products a stylish and beautiful appearance, while protecting the shell from wear and corrosion in daily use. In the field of 3C products, aluminum alloy die-cast mobile phone frames, tablet computer shells, etc., after spray painting, not only improve the overall texture of the product, but also enhance its anti-fingerprint and anti-scratch performance.

Powder coating

Powder coating, also known as powder spraying, is a surface treatment process in which dry solid powder coating is attached to the surface of aluminum alloy die castings by electrostatic adsorption and other methods, and then melted, leveled, and solidified into a film after high-temperature baking.
Advantages of powder coating
1. Excellent corrosion resistance and wear resistance: The coating formed by powder spraying is usually thicker than the paint coating, generally between 60-100 microns, which makes the aluminum alloy die castings after powder spraying have stronger corrosion resistance and wear resistance. In products used outdoors such as aluminum alloy doors and windows, street lamp poles, powder spray coatings can effectively resist the erosion of harsh environmental factors such as ultraviolet rays, rain, wind and sand, and maintain the performance and appearance of the product for a long time.
2. Environmental protection and energy saving: Powder coating does not contain organic solvents, and almost no volatile organic compounds (VOC) emissions are generated during production and construction, which is environmentally friendly. At the same time, the powder spraying process has a higher energy utilization rate and is more energy-efficient than the painting process.
3. Good adhesion and mechanical properties: The specially treated powder coating can form a strong adhesion with the aluminum alloy surface. The coating has high hardness and flexibility. It is not easy to fall off or crack when impacted or bent by external force, ensuring the reliability of the product under complex use conditions.
Application scenarios of powder spraying process
Powder spraying process is widely used in aluminum alloy die-casting products with high requirements for protective performance. In the field of industrial equipment, such as aluminum alloy die-casting motor housing, mechanical equipment parts, etc., powder spraying can provide reliable protection for them and ensure the stable operation of equipment in harsh industrial environments. In the furniture industry, aluminum alloy die-casting table and chair frames, decorations, etc., after powder spraying, not only have good protective performance, but also present rich and diverse colors and textures, meeting the dual needs of modern home for beauty and practicality.

Selection Hardware-One-stop service expert for aluminum alloy die-casting

As a professional aluminum alloy die-casting manufacturer, Selection Hardware provides customers with a full range of aluminum alloy die-casting services with many years of industry experience and advanced technical equipment.
1) Aluminum alloy die-casting production
We have advanced die-casting equipment and a professional mold design and manufacturing team. We can quickly develop customized aluminum die-casting product molds according to customer needs and efficiently produce high-quality aluminum alloy die-castings. Whether it is a complex structural part or a high-precision small part, we can ensure that the dimensional accuracy, surface quality and intrinsic performance of the product meet or even exceed industry standards through strict production process control. We have accumulated rich experience in the production of ADC12 aluminum alloy die castings. ADC12 aluminum alloy has good casting performance and mechanical properties. We optimize the die-casting process parameters, give full play to its material advantages, and provide customers with high-quality products.
2) Surface treatment service
In the surface treatment link, we are equipped with a complete painting and powder spraying production line, as well as professional surface treatment technicians. Customers can choose the appropriate surface treatment method according to the product's usage scenario and appearance requirements. Our painting process uses advanced spraying equipment and high-quality coatings to achieve precise color matching and uniform coating thickness control. The powder spraying process uses electrostatic powder spraying technology to ensure that the powder coating is evenly attached to the surface of the die casting to form a high-quality protective coating. At the same time, we also provide other surface treatment methods such as anodizing and electroplating to meet the diverse needs of customers.

3) Assembly and shipment services
In addition to aluminum alloy die casting production and surface treatment, Selected Hardware also provides one-stop assembly and shipment services. We have a professional assembly team that can accurately assemble surface-treated aluminum alloy die-castings with other components according to the customer's product design requirements to ensure that the overall performance and function of the product meet the customer's expectations. During the assembly process, we strictly implement quality inspection standards and conduct detailed inspections on each assembly link to ensure reliable product quality. Finally, we will make efficient packaging and shipment arrangements according to the customer's order requirements to provide customers with a convenient and efficient one-stop service experience.

As a professional aluminum alloy die-casting manufacturer, Selection Hardware is committed to providing customers with one-stop services from aluminum alloy die-casting production to surface treatment to assembly and shipment. With advanced technology, strict quality control and excellent customer service, we create high-quality customized aluminum die-casting products for customers to meet the diverse needs of customers in different industries. Whether you need a small batch of samples or a large-scale mass production order, we will serve you wholeheartedly and become your trusted partner.