Copper is indispensable in all industries. This semi-precious metal conducts electricity and heat very well, is easy to process and durable. However, laser marking of copper is a huge challenge for users. Due to the properties of copper, laser processing is difficult: it is highly reflective and absorbs very little rays. Still, if you want to put serial numbers, QR codes, and other marks on copper parts, you don't have to give up the advantages of laser marking.
Due to its high reflectivity, copper absorbs very little laser light. Many manufacturers do not properly deliver lasers into copper components. In order for the marking of copper to be of high quality and durable, the laser power must be concentrated over a small area. In order to break through process bottlenecks, laser pulses with high pulse peak power are required – and this is where TRUMPF products come in.
- Laser marking is varied: whether it's fine or deep engraving, or dark marking: even copper can be done with laser.
- Laser-marked long-lasting: Serial numbers, QR codes or logos that are laser-marked are built to last.
- Faster access to finished parts: Laser markers prepare parts for cleaning and polishing. Thus saving time.
- Laser care materials, environmental protection and energy saving: toxic consumables, wear and tear, high energy requirements? This is not the case with laser markers.
What are the application areas of copper laser marking?
High-contrast markings for serial numbers, QR codes, and logos
Permanent visibility of serial numbers, names, and logos is critical. To achieve this, highly reflective copper components must absorb enough rays. The desired results can be achieved with lasers with high pulse peak power and variable pulse widths. Kecmark lasers reliably mark copper in different colors and shades.
Copper surface treatment
Laser marking machines have earned praise for their versatility. Laser markers can not only mark, but also texture, roughen, or clean surfaces. Lasers are an excellent device for preparing copper parts for joining. The laser only targets the junction position, using strong pulses to remove protective layers or impurities. The area around the joint remains intact and the process is faster for point-based use.
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