Laser Rolling Technologies

Laser Roll Cladding

Fraunhofer IWS develops laser roll cladding technologies for different applications. Conventional laser roll cladding is used to produce bimetallic strips or wires that are used as semi-finished products. The research focus here is on material pairings that are very difficult to join due to their metallographic properties, as they quickly form intermetallic phases at the joint. These include compounds such as Al-Cu and Al-Fe. Plain bearing materials as well as contact materials are also being intensively investigated.

A further field of development is process development for the manufacture of metallic sandwich elements or profiles using the roll-to-roll process. High production rates for lightweight panels and similar products can be achieved by continuous joining in the roll gap.

The latest laser rolling technology is high-performance coating by direct cladding. The aim here is to coat rotationally symmetrical components with strip material largely from the solid phase. This saves considerable energy and enables coating rates of up to 100 kg/h to be generated. Initial applications include the reconditioning of work rolls or the coating of large hydraulic cylinders.

News and Media


Press release / 3.4.2023

Lasers Join Lightweight Sandwich Structures

Production of Lightweight Metallic Panels Using the Roll-to-Roll Process


Product sheet

Laser Roll Cladding

Laser-based Joining in the Gap for Continuous Production of High-Strength Mixed Metal Joints

Laser Roll Cladding Line

Laser roll plating machine at Fraunhofer IWS.
© Fraunhofer IWS
Laser roll cladding line at Fraunhofer IWS
Arrangement: inductive and laser heating of the bands.
© Fraunhofer IWS
Laser and inductive heating of the strips


  • Karl Fuhr GmbH & Co. KG, Horn-Bad Meinberg

Technical Data

  • 2 x flexible Turks head rolling mill (plating and calibration)
  • 1 x 100 kW + 1 x 50 kW HF generator for the band pre-heating
  • 1 x 5 kW disc laser + 1 x 8 kW disc laser (temporary)
  • Plating speed: up to 50 m / min
  • Machinable bands (width x thickness): max. 150 mm x max. 4 mm
  • Plating area: up to 30 mm
  • Bands can be processed up to 1000 kg coil weight


  • Inductively assisted laser roll plating of semi-finished components between: 
    • Different steels
    • Steels and aluminum or copper alloys as well as
    • Aluminum and copper alloys