Marking technologies based on lasers

Laser annealing

The process of anodizing involves creating an oxide layer on ferrous metals (iron, steel, high-grade steel) and titanium through localized heating.

Generally, the oxide layer is black; however it may additionally produce other annealing colors (inclusive of yellow, pink and green). The satiation relies upon at the temperature of the heated layers.

The fabric floor stays even at some point of annealing due to the fact not anything is eliminated from it; the satiation alternate is accomplished via localized fabric heating only.

The warmth normally penetrates 20 to 30 µm deep with inside the metallic floor. This makes the marking non-abrasive and guarantees that it may be eliminated with the aid of using re-heating (min 700°C for ferrous metals).

 Suitable laser systems:

CO2 laser marker

Fiber laser marker

Black marking on aluminum

Color Change/Frothing

Plastics soak up Lasermarkierung mild. The satiation pigments (from additives, colors etc.) and carbon in plastics are destroyed and vaporize due to localized heating. A satiation alternate will become seen and the frothing of the fabric may be felt.

The carbon with inside the plastic oxidizes to shape CO2, which comes out of the plastic and bureaucracy a layer of froth.

The discoloration is both lighter and darker relying at the composition. Dark plastics discolor to white on the locations to be marked, whilst mild plastics discolor to grey or black (see carbonization).

Discoloration and frothing seem solely in case of plastics.

Suitable laser systems:

Fiber laser marker

UV laser marker

Color Removal / Material Removal

Marking with the aid of using disposing of satiation and fabric is used specially in lined substances and anodized aluminum in addition to in fittings, packaging substances and labels. The present satiation, coating and floor layers are partly eliminated and the bottom fabric will become seen.

The layers to be eliminated soak up the laser mild; the fabric heats up and vaporize at applicable locations. Since the floor layer and sticking out base fabric have distinctive colors or the bottom fabric is frequently additionally back-lit, the marking will become clean and seen.

Since the very last markings are very wealthy in contrast, this laser marking system is in particular used with inside the car enterprise for the day/night time design, with inside the marking of the maximum numerous manage factors and keyboards in addition to with inside the packaging enterprise.

Suitable laser systems:

Fiber laser marker

Laser marker for Day-Night-Design (satiation removal)

CO2 laser marker

Carbonizing

In case of carbonization the use of laser, the laser marked fabric usually receives a darker satiation.

Plastic bonds are damaged and the carbon from those bonds is released. The discoloration therefore produced levels among grey to blue-grey and black.

Carbonization is used for mild plastics and natural substances (paper, packaging substances, wood, and leather), wherein the satiation adjustments from mild to dark. Click here

Suitable laser systems:

CO2 laser marker

Fiber laser marker

UV laser marker

Engraving

In case of engraving the use of laser marking, fabric is taken out or eliminated from the floor of the issue to be processed. This marking impact may be created in nearly all substances.

Especially metals, plastics and ceramics are engraved the use of laser markers. The laser beam penetrates into the floor and gets rid of it, in order that there may be a seen despair of as much as 50 µm in that area.

Since the fabric receives concurrently heated and reacts with the ambient air, there is mostly a discoloration on the engraving areas, which stand out extra surprisingly because of the laser marking.

Suitable laser systems:

Fiber laser marker