Laser marking on medical cobalt, steel, titanium components

In the medical industry, the component traceability through UDI code is now mandatory in order to identify each device, ensuring more safety and reliability to the entire supply chain.

Steel and titanium are the privileged metals for construction of these devices, and today we are going to analyze the results of the processing of these materials using fiber optic laser sources. In particular, we will focus on CoCrMo cobalt alloys, M30NW steel and TA6V titanium, for which we have identified the ideal laser source, optical configuration and   parameters.

  • Material

    M30NW steel

  • Component

    Surgical instruments

  • Laser type

    FiberFly Pico


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After marking, a test of resistance to the citric passivation cycle was carried out on CoCrMo cobalt and M30NW steel components, with subsequent verification of material oxidation through a 24-hour salt spray cycle.

For TAV6V components, only the oxidation test was required, using the same     spray process.

The tests showed that the choice of source and parameters were adequate for the required materials and marking, as contrast and visibility remained unchanged.

Once the technical aspects related to the laser source were identified, the work passed from the hands of the LASIT Laboratory to those of mechanical design and development, the flagship of our activity, which was responsible for the implementation of the automatic system necessary for the laser marking of all components.


As they are implantology components, these are extremely delicate parts. This factor, together with the demand for multi-sided marking, made it necessary to create a laser marker with an anthropomorphic robot to take the parts from the template and position them under the laser head at all the required angles and inclinations.

The exact centering and positioning of each component by the robot under the laser offers not only an aesthetic value for the marking of alphanumeric codes, but also a functional value, as alignment notches, which are essential for correct insertion of the prosthetics in the operating room, were also marked on the prosthetics.

Since the same machine marks all three components, the laser marker has been equipped with multi-storage and a fully automatic pick-up and positioning system.

Once the pallets are loaded into storage, the laser marker works without the need for an operator: the software identifies the type of component through a specific Datamatrix code, sets the corresponding marking and starts the cycle.

Click here to view the video of the FlyRobot marking process.

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Date: 05/06/2020

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