Anodizing Of Aluminum CNC Machining Parts: Definition, Importance, And Different Types

Importance of Anodizing Aluminum CNC Machining Parts Definition

Aluminum is one of the most widely utilized materials in industry. It is a lightweight but strong material that is easily machined.

Anodizing improves the strength-to-weight ratio of aluminum, making it more corrosion resistant, and helps to create a hard, protective covering to the part's surface. This method also allows for a wide range of color possibilities for anodized Aluminum Turning Parts.

Type I

CNC machining is a highly versatile method that may be used to create pieces from practically any material, including aluminum. Because of its ability to be shaped into a variety of shapes, as well as its light weight and corrosion resistance, this metal is a favorite option among engineers.

The CNC machinist can anodize aluminum CNC machined items after they have been manufactured to make them more useful and appealing. This treatment extends the life of the part, improves its look, and boosts its corrosion resistance.

CNC Aluminum Machining Parts are immersed in an acid electrolytic bath during the anodizing process. This solution is made up of an acid with a high concentration of oxygen ions, such as lye. These positive ions oxidize into aluminum oxide when the current flows through the bath.

Once the anodized coating has created, it can be colored by painting or plating. The color intensity of an anodized finish is governed by several elements, including coating thickness, dye concentration, immersion time, and temperature.

Type I - Sulfuric Acid Anodizing: The most prevalent anodizing technique, this approach use sulfuric acid as the electrolyte to generate a thin film with a thickness ranging from 0.0001 to 0.001 inches. This coating is the most resistant to corrosion and abrasion.

It is also the least expensive of the anodizing procedures because it requires less heating and chemicals. However, when exposed to ultraviolet (UV) rays, this layer fades.

Furthermore, unlike chromic anodize, this method does not offer as many color options. However, it is an excellent choice for applications requiring hardness and abrasion resistance, such as valves and pistons, sliding components, gears, joint swivels, electrical insulation, and blast shields.

The anodizing process begins with a thorough cleaning of the component to eliminate surface dirt. Alkaline or acidic substances are commonly utilized as abrasive agents to remove these materials.

Following that, the component is etched to remove any scuff marks or other flaws that may have happened during the machining process. This procedure makes it easier for a CNC Machining Service shop to polish the anodised layer.

Finally, the anodised layer is sealed to prevent fading over time. Sealing the anodic oxide coating also gives the completed product a more consistent appearance and prevents corrosion from occurring beneath the coat.

There are various types of anodizes that can be used on aluminum alloys and other metals. Most are effective and efficient for specific application areas, but some can be more useful than others.