Laser Marking & Engraving on Metals
Most of metals can be laser marked by fiber laser marking machines. You could easy operate machine with computer fast and permanent marking& engraving the logos, graphics, numbers, photos or two-dimensional barcode on metals.
Metal Types: Stainless steel, steel, titanium, brass, copper, iron, anodized aluminum, aluminum, carbide, coated metals, cobalt, nickel, pewter, tungsten.
Melting and Thermal Gouging
Changes the surface material with extreme heat, thus changing the reflection of the surface.
Annealing or ‘Black Marking’
Encourages a modification to the micro-structure of titanium and some steels, creating a permanent (up to 200 degree temperature) non-destructive mark. Sometimes creates a colour change in material
Engraving (Deep Marking)
Penetrates the surface of the material to ‘cut out’ the desired mark. In aluminium material, fiber laser will high power shoot the aluminium and make it to be powder then move off for a deep engraving.
Internal Foaming and Carbonisation
Sometimes, the material covered by transparent plastic of other bubbles, fiber laser will make effects on workpiece directly with laser light though the bubbles or transparent films.
Bleaching and Changing Colour
A non-destructive interaction with the molecules on the surface of the material occirs creating a colour change.
Removing Covering Layer
For example, on a label the laser would remove the coating on a printed area and expose material, thus making a good contrast for the mark.