Demystifying the Bead Blasting Process in CNC Machining(types of casting Kerwin)

Bead blasting is an integral part of a broader industry – Computer Numerical Control (CNC) machining. Essentially, bead blasting refers to the process whereby bead-shaped shots are propelled against a surface using compressed air or via high pressure, primarily to achieve surface finish requirements. The goal often revolves around removing surface constituents such as scale, rust, de-burring, and providing a uniform matte finish. As such, this article provides an exploration into the role that bead blasting plays within the CNC machining world.

CNC machining is a subtractive manufacturing process where raw material is removed with precision machining tools controlled by computers. This technology allows for producing complex three-dimensional shapes on-demand and with exact repeatability. While multiple operations like milling, turning, drilling follow in a typical CNC machining procedure; finishing processes like bead blasting play a critical final step.

The friction created during the impact of these blast materials removes undesirable compounds from metal workpieces, resulting in clean and smooth surfaces. Understanding how to conduct effective bead blasting can thus dramatically enhance the aesthetic appeal and function of CNC machined parts.

How Bead Blasting Works in CNC Machining

In order to produce a finished product, there’s a systematic production approach adopted when implementing bead blasting in CNC machining:

Firstly, the CNC machine creates the desired component shape from a solid block of material through various operations like milling or turning. After undergoing these mechanical steps, the machined parts typically have marked tool lines, burrs, or layers of oxidation – all undesired features impacting the final appearance and feel of the components.

At this point, bead blasting comes into play. With a bead blaster’s nozzle directed at the workpiece, small glass beads under high pressure hit the piece’s surface. Through repeated impacts, the tiny spheres remove any contaminants or imperfections without damaging the part itself.

When the process is completed, the parts are usually washed to remove any remaining beads or dust. What remains is a component with enhanced visual appeal due to a uniform, matte finish—a sought-after quality in numerous industries like automotive, aerospace, and medical devices.

The Benefits of Bead Blasting

Bead blasting instills an array of benefits that enhance not only the aesthetics of CNC machined parts but also their performance:

1. Surface Cleaning: By removing surface contaminants like rust, scale, or residual machining marks, bead blasting provides remarkable cleaning effects.

2. Improved Appearance: The application of bead blasting gives a smooth and uniform finish enhancing the aesthetic value of machined components.

3. Pre-treatment: It serves as an excellent pre-coating preparation strategy because it increases the bonding surface area for paints and other coatings.

4. De-burring: Through the removal of burrs created during prior machining steps, bead blasting allows enhanced part precision and functionality.

5. Stress Relief: Remarkably, this process can induce compressive stresses on a part’s surface, forming a thin layer resistant to cracking – improving fatigue strength.
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To sum up, bead blasting holds central importance in maximizing the effectiveness of CNC machined products, serving functionalities across different industry verticals successfully. With attention paid to appropriate operating procedures, bead blasting guarantees superior finishing capable of satisfying customer requirements comprehensively. Whether seeking to achieve a particular aesthetic appeal or enhancing a part’s utility via such processes, taking heed to understand and optimally conduct bead blasting certainly offers rewards.

Want.Net Technical Team

Want.Net Technical Team

The Want.Net Technical Team has diverse members with extensive education and training in CNC machining. They prioritize precision, efficiency, and innovation to provide high-quality manufacturing solutions globally.

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