Precision processing

The right process for every challenge.

Laser technologies

Our laser technologies are characterized by a high level of precision, a high capacity for automation and an extremely high level of flexibility.

We use laser drilling processes to manufacture our high-pressure filters with specifically configured processes and systems. These filters provide reliable and continuous protection of highly sensitive injectors and control valves for injection systems against even the smallest dirt particles.

The monolithic structure of a stainless steel base ensures maximum mechanical, thermal and chemical stability. The filters are 100% tested for flow and contour during the manufacturing process.

Micro-laser deposition welding is used in the manufacture of contacts. This method allows for a reduction in the use of expensive precious metal alloys on the contact point. Given its mechanical properties, the support is typically made of a stainless steel alloy, and the contact point is welded on as a Pd, Pt, or Au alloy, with precisely adjusted laser pulses building up a 20 to 50 micron thick precious metal coating.
At KERN-LIEBERS, processing with laser beams is a favored method. Laser welding has been used for many years as a joining process in high volume production with low heat input and high levels of precision. Depending on the product requirements and material properties, both pulsed and continuous wave lasers are used. Used in conjunction with specially developed inspection systems, these highly automated processes guarantee perfect component quality, even under extreme conditions.

Like induction hardening, laser hardening is a surface hardening process. Many tools and machine components are subject to high levels of wear when used. To achieve greater wear resistance and increase their service life, these parts are surface hardened.

In the laser hardening process, a laser beam with an adjustable focal spot size is guided by a CNC-controlled multi-axis system or a robot across the heavily stressed functional surfaces. They are then "self-quenched" by the cold, unheated component volume, which hardens the part at the required location. Because the heat treatment is localized, the heat input is minimal and the level of distortion is correspondingly low. This greatly reduces or even completely eliminates the need for rework.

High heating and cooling speeds produce particularly fine-grained transformation structures (microstructures) in the hardened layer, with very good mechanical properties.

Lasers can be used to efficiently remove burrs and round edges. This technology is particularly suitable for removing the thin burrs produced during stamping.

At KERN-LIEBERS, laser marking is used to label some of our products as required. In addition to machine-readable barcodes, products can be individually labeled with the part number and date of production for the purposes of quality assurance and traceability of production. Despite continuous chemical and thermal stresses, these laser markings must last for the entire service life of the product.

Our laser marking systems are either fully integrated into the KERN-LIEBERS production lines or available as separate workstations for special applications.

Industry applications


Electrical engineering

Building services engineering

Consumer goods

Mechanical engineering and equipment manufacturing

Medical technology