The surface treatments of aluminum hardware products mainly include the following:
Anodizing: This is a commonly used aluminum surface treatment method. Through the anodizing process, an oxide film is formed on the surface of aluminum products to improve corrosion resistance and aesthetics. Anodized film has the characteristics of high hardness, high wear resistance, and high weather resistance, and is the first choice for surface treatment of many aluminum products.
Spray coating: Spray coating is to spray paint evenly on the surface of aluminum products to add color, beauty and protective layer. Spraying materials can be paint, powder coating, polyester coating, etc. The spraying process is easy to automate, improves production efficiency, and can also be customized as needed.
Electroplating: Electroplating is to cover the surface of aluminum products with a metal layer to increase aesthetics and corrosion resistance. The electroplating layer can be copper, nickel, chromium and other metals, and different electroplating layers can be selected according to needs. The electroplating process can achieve high-precision, high-density, and high-bonding surface treatment, but it will also increase production costs.
Mechanical polishing: Mechanical polishing is the polishing of the surface of aluminum products through mechanical means to improve surface smoothness and aesthetics. Mechanical polishing can be divided into different levels such as coarse polishing, medium polishing and fine polishing. Choose the appropriate polishing grade according to your needs. Mechanical polishing is a simple and easy process, but may leave surface defects such as scratches and orange peel.
Sandblasting: Sandblasting uses high-speed airflow to spray sand particles on the surface of aluminum products to remove surface dirt, burrs and oxide films, etc., and can also achieve a certain degree of surface roughening. The sandblasting process can enhance the adhesion of the coating, improve surface aesthetics and corrosion resistance.
Passivation: Passivation is a chemical treatment method that converts the surface of aluminum products into a stable passivation film through a chemical reaction to improve corrosion resistance and aesthetics. Passivation film has the characteristics of high transparency and high hardness, but it may affect the adhesion of the coating.
To sum up, there are many methods for surface treatment of aluminum hardware products, and different methods have different characteristics and application scenarios. Choosing an appropriate surface treatment method requires consideration of the product’s application fields, material properties, aesthetics, corrosion resistance and other requirements. At the same time, with the continuous advancement of technology and the application of new materials, the surface treatment methods of aluminum hardware products will also continue to develop and improve.
