Laser Marking

09/01/2009

This month Protomatic is highlighting Laser Marking. Since we have purchased the new laser system we have quite simply under utilized the machine's capability. So this month we wanted to demonstrate some of the machine's capability. This article covers only a small fraction of the possible applications, so please do not hesitate to call and inquire if you need more information.

Open the laser protective chamber and load the part to be engraved.

Setting up the laser marker with red visible light laser. This application is a simple 2D projection. In the rear of the chamber is a 4-Axis Rotary table for more complex projections (not being used.)

Custom Engraved key chains. This is a magenta anodized aluminum surface that produces a nice bright white lettering.

Questions or Concerns?
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Our Laser Marker
Protomatic uses Electrox Raptor Laser marker. It is a Solid State Q-Switched marking system. Having a wavelength of 1064nM (Infra Red) and a peak laser power of greater than 10,000 Watts for 25-100n Seconds. Wow, sounds impressive, but what can it do?

What can it do?
We can mark with many fonts even down to 0.010'' high, picture, and most standard bar-code methods. Highly reflective materials cannot be marked with this laser. One material that we tested that did not mark was silver (Ag). But, steels, aluminum, and titianium mark well.

What material can be marked?
Many materials including plastics, metals, and metals with a finish work the best. Marking depth varies on laser output setting and material and surface condition (Polished or Matte). Typical marking depths are in the 0.0001'' to 0.001'' deep. That is why they call them markers and not engravers, which are typically much deeper.

Some Examples are:

Laser Marking on Steel

High Carbon 52100 Steel with a black oxide base results in a gray-silvery color showing good contrast.

Laser Marking Test

Code 39 or 2D , marked white over a black anodized base.