The Process of Laser Marking on CNC Machined Parts

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  • Source:Orbis Parts



In the competitive world of precision manufacturing, adding value and ensuring traceability are paramount. For industries ranging from aerospace and medical to automotive and electronics, laser marking has become an indispensable, noncontact process that perfectly complements CNC machining. This technology offers a permanent, highcontrast, and versatile method for adding vital information directly onto machined components, enhancing both their functionality and traceability.


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The laser marking process for CNC machined parts is a highly controlled and automated procedure. It typically begins after all primary machining, deburring, and cleaning operations are complete. The part is securely placed in the laser marking machine, which is often programmed with the same CAD/CAM data used for its manufacture. A focused laser beam, commonly from a fiber laser for metals or a CO2 laser for plastics and organic materials, is directed onto the component's surface. The intense energy of the beam alters the surface's properties through various mechanisms such as annealing (creating a contrast mark without material removal on metals like stainless steel), engraving (vaporizing microlayers of material), or foaming (on plastics). This controlled interaction creates a precise, highresolution mark that is resistant to wear, heat, and corrosion.

The advantages of integrating laser marking into a comprehensive CNC machining service are substantial. It enables the permanent application of:
Serial Numbers and QR/Barcodes: For full traceability throughout the product's lifecycle.
Logos and Branding: For professional brand representation and anticounterfeiting.
Data Matrix Codes: Storing extensive manufacturing data in a small space for quality control.
Critical Specifications: Such as part numbers, material grades, and compliance certifications.

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Unlike traditional methods like inkjet printing or labels, laser marks are indelible and will not fade, peel, or rub off under harsh operating conditions. This permanence is critical for safetycritical parts and for meeting stringent industry regulations. Furthermore, the process is incredibly fast, environmentally friendly (as it requires no inks or solvents), and can be seamlessly integrated into an automated production line, ensuring no bottleneck in the manufacturing workflow.

For businesses seeking a reliable partner for endtoend component production, choosing a supplier that offers integrated CNC machining and laser marking is a strategic decision. It guarantees a single point of responsibility, ensures mark accuracy relative to part features, streamlines the supply chain, and accelerates timetomarket. By providing this valueadded service, we empower our clients with parts that are not only precisionengineered but also professionally finished and ready for immediate integration, driving efficiency and growth for their products.