Getting Acquainted with Bead Blasting in CNC Machining(tack weld Nancy)

Ever wondered how industrial products achieve their smooth and impeccable finish? Welcome to the realm of bead blasting, a surface finishing technique largely used in Computer Numerical Control (CNC) machining. For those unfamiliar with these terms, let’s dig a little deeper to grasp what these concepts entail.

At its core, CNC machining is essentially a process utilized in the manufacturing sector that entails the use of computers to control machine tools. Intricate 3D cutting tasks can be accomplished in a single set of commands using this method, ensuring product uniformity. Now, within the spectrum of CNC machining lies an essential process known as bead blasting which further enhances this preciseness.

Bead blasting falls under mass finishing processes intended to improve the appearance, surface quality, and functionality of machined parts. Essentially, it uses small glass beads propelled at high pressure towards the workpiece to remove surface contaminants and provide a consistent satin finish without altering the dimensions of the part.

The Process of Bead Blasting

Starting with a raw piece of metal, the exact design desired by the client gets programmed into the CNC system before initiating the cutting phase. Next comes bead blasting after obtaining our primary structure from the machined metal. Typically done prior to coating or plating activities, it comprises several stages:

1. Preparation: The surface of the component must be cleared off grease, oil, or any other contaminant that can affect the consistency of the outcome. A clean surface ensures optimal adhesion during subsequent steps.

2. Blasting: The cleaned-up components are loaded into the bead blasting chamber where tiny glass beads get directed on them through an air gun. These particles chip away minute amounts of material upon impact and smoothen imperfections like burrs or scratches.

3. Clean-Up: After achieving the desired finish, excess beads adhered to the components are blown away or rinsed off. The parts are then dried to prevent potential rusting issues later on.

Benefits of Bead Blasting

Bead blasting offers several benefits that make it a crucial part of CNC machining, these include:

1. Consistent Finish: Whether processing one component or hundreds at once, the bead blasting process provides uniformity in surface finish due to its mechanical nature.

2. Surface Preparation: By removing light burrs and cleaning up machine paths, bead blasting prepares the components for subsequent processes like anodizing, painting, or plating.

3. Aesthetics: It helps improve the aesthetic appeal by providing an even satin appearance with no visible machine lines—a sought-after look in many industries like automotive and electronics.

4. Increased Lifespan: It can prolong the life of machined parts by eliminating contaminants that contribute to premature corrosion and wear-out.
tack weld


As technology advances rapidly, innovative production methods continue popping up within numerous sectors. Yet, staple techniques such as bead blasting retain their significance given the exceptional service they offer. In essence, the bead blasting procedure both enhances the aesthetics and functional quality of CNC machined products, making it an invaluable tool under a manufacturer’s arsenal capable of swaying consumer satisfaction towards positivity. Lastly, although seemingly minute in an extensive manufacturing line-up, bead blasting’s role is monumental when scrutinizing finer details—the key to product excellence.

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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