[Laser Selection according to Material] Metal

• - Aluminum has a higher reflectance than iron or stainless steel, so select a laser with a high peak power.
• - Perform powerful marking at the position where the laser beam is focused with a small beam spot diameter and high energy density.

• - Specify a high power and a fast scan speed. White marking on aluminum can be performed stably and over a wide condition range.
• - YAG laser markers are commonly used to mark thick characters. YVO₄ laser markers are commonly used to mark thin characters.

Suitable Models

MD-F Series 3-Axis Fiber Laser Marker
MD-V9900 Series 3-Axis YVO₄ Laser Marker

Print Quality

• - Engraved printing on the surface without discoloration.
• - Deeper marking can be achieved by overlapping characters.

Points to Note

• - In some cases, a deeper mark can be achieved by overlapping marks that print more quickly rather than one mark that slowly engraves the surface.
• - Engraving is made easier by setting the Q-switch frequency low, therefore releasing more energy per pulse.

Benefits of 3-Axis Lasers

• - Large-sized nameplates can be printed with uniform depth.
• - Distortion free engraving is achievable in a 300 mm x 300 mm area.

Suitable Models

3-Axis Hybrid Laser Marker MD-X series
3-Axis Fiber Laser Marker MD-F series

Print Quality

• - Black-annealed marking is possible, the same as with iron and stainless steel.

Points to Note

• - It is especially disadvantageous for cemented carbide tools to be cracked, so a key point is the fine adjustment of the Q-switch frequency.
• - Depending on the type of cemented carbide, characters may not be marked in black. Instead, they may be marked in white, similar to polishing the surface.
• - Fiber lasers are optimal when processing time is important. YVO₄ lasers are optimal when quality is more important (preventing damage).

Benefits of 3-Axis Lasers

• - Even on curved surfaces such as drills, it's possible to mark clearly with no distortion.
• - The focal point can be varied even when using the laser offline, so there is no need to perform adjustments, which supports marking on a wide variety of products.

Suitable Models

3-Axis Hybrid Laser Marker MD-X series
Telecentric Green Laser Marker MD-T series

Print Quality

• - The surface is marked by shallow engraving.
• - The marked surface becomes whitish.

Points to Note

• - With a CO₂ laser marker, the majority of the laser light is reflected, so it is not possible to perform marking.
• - Because the reflectance is high, select a laser marker with a high peak power.
• - It is possible to perform black, carbonized marking with the fundamental wavelength, but this takes time due to the low absorption coefficient.

Benefits of 3-Axis Lasers

• - Due to the uniform spot across the whole area, faint characters do not occur even for workpieces with high reflectance.
• - The high peak power enables clear marking on copper.

Suitable Models

MD-V9900 Series 3-Axis YVO₄ Laser Marker

Print Quality

• - Engraving as well as light and dark contrast marks are achievable on gold surfaces.

Points to Note

• - Fine tuning of the pulse frequency (Q-switch) is fundamental due to the high refl ective properties of gold.
• - Thick plating may require added adjustment of marking variables in order to achieve the desired type of mark.

Benefits of 3-Axis Lasers

• - Clear printing is achievable, even on curved surfaces with a small diameter.
• - Precise focal point adjustment allows for uniform marking on highly refl ective targets.