Laser marking on metals provides numerous benefits both in terms of quality and affordability. It can be made at different depth levels, based on the material and visual results you want to obtain allowing for versatility. You can easily mark logos, alphanumeric characters, barcodes, progressive numbering, drawings, DataMatrix, and complex graphics.
Laser marking has become popular in various industries such as automotive, valves, electronics, mechanics, jewellery, and medical technology industries; all because of how effective laser marking method is in providing traceability to various products and components.
Deep laser marking on metals is made through a deep penetration process in the component we are processing. The material is removed layer by layer, in order to create corner radii of a few millimetres, which wouldn’t be possible to make with mechanical methods.
When laser engraving on metal the laser beam penetrates into the surface, removing a part of it and creating a vacuum area. As the material is heated, reacting to the surrounding environment, bleaching in the engraving area makes the marking much clearer.
Annealing occurs when the marking oxidises the surface of metals such as iron or steel and titanium heating them locally. Usually, the oxide layer is black, but it can have different shades, depending on the temperature of the heated layer. Heat reaches a depth ranging between 20 and 30 µm.