Aluminum Laser Marking and Engraving
For marking and traceability, fiber laser engravers generate a wide range of grays (from white to black) on the surface of aluminum. They are used to:
- Permanently mark QR codes, data matrix codes, serial numbers, and logos.
- Engrave various aluminum parts such as castings, ingots, sows, slabs, billets, sheets, and extrusions.
- Etch all types of aluminum, including anodized aluminum and common alloys (Aluminum 380 and 6061).
Benefits of Aluminum Laser Marking & Engraving
Industrial Laser Marking of Aluminum
Lasers are used throughout the aluminum supply chain to identify a range of aluminum parts.
Laser Etching Aluminum Die-Castings
Laser etching is the fastest way to permanently mark aluminum castings with high contrast marks.
Vision Analysis of Aluminum Die Casts
Vision systems can be used to analyze the geometry and position of aluminum parts to adjust the laser marking process accordingly. This is ideal for marking rough, irregular, rounded, or slanted metal surfaces.
How to Move the Marking Operation in the Casting Plant
In this guide written by Laserax and aluminum expert Martin Hartlieb, we explain what it takes to achieve traceability compliance and tackle challenges unique to casting environments.
How Aluminum Laser Marking Works
There are two laser processes used to mark aluminum: laser etching and laser engraving. While laser etching is a process optimized for speed, laser engraving is optimized for durability.
Fiber Laser Engravers for Aluminum
To mark aluminum, the most efficient type of laser is a fiber laser engraver (not a CO2 laser). This is because aluminum absorbs the wavelength generated by fiber lasers (1,064 nm) more efficiently than the one by CO2 lasers (≈9.3–10.6 µm). CO2 laser engraving is only possible if the surface is covered with a specialized marking spray (such as CerMark).
Here are the fiber laser machines we recommend for aluminum engraving.