Proper surface preparation including cleaning and degreasing is one of the most important and time-consuming technological processes of regeneration or manufacturing of various elements as well as joining of construction materials.

The essence of the process is to achieve high adhesion forces by removing secondary organic or inorganic layers and modifying the surface. In a fully controlled process, a laser beam is scanned onto the surface of the material, exposing, and evaporating the layer until the desired ablation depth is achieved.

The wide range of adjustable parameters, including pulse duration, repetition rate and beam shape, allows the key features of safety, productivity and top processing quality for industrial applications to be maintained.

Some examples of treatment applications with fibre laser systems:

Mould and insert cleaning

High demands on the appearance and quality of the product oblige companies and industrial plants to use very high-quality tools and moulds in their production. Regardless of whether it is large-scale or small batch production, regular maintenance of the moulds and inserts is necessary to achieve and maintain consistent product quality. The unquestionable advantage of using laser systems in this case will be the non-abrasiveness and non-contact nature of the process, which translates directly into time savings and extended service life of moulds and tools.

Thanks to the use of fibre lasers, there is no need to disassemble the mould from the machine and cool it down before treatment.

Surface regeneration, removal of corrosion lesions and deposits

The need to remove passivation layers, tarnish or corrosion pits is not only related to the appearance and aesthetics of the surface, it is above all crucial for the durability and quality of subsequent processes and treatments. The precise removal of entire layers or defined areas with micrometre accuracy is what sets laser technology apart from the chemical and abrasive blasting methods used to date.

Weld joint cleaning

Producing high quality weld seams requires a clean and prepared substrate. Oil, grease or oxide residues will increase the porosity of welded joints, reducing yield strength, corrosion resistance and fatigue life. The application of the process developed by Laser PULSE will significantly improve the quality of the connections while allowing the removal of oxides and discolourations that occur during welding (e. g. stainless steel, aluminium) and while preparing the surface, e. g. for coating. It also ensures long-term corrosion resistance.

Restoration of stone, architectural detail, ceramics, wood and metal

The restoration of works of art and historic buildings is another field where ablative laser systems are used with increasing frequency. Thanks to their versatility and full process control, they enable selective removal of even very old, crusted overlays and repaints of non-uniform thickness and structure. Here, too, the substitution of abrasives and chemicals that are harmful to the environment, man and the object itself is of considerable importance.