Expected effects and results
The new test bed, here referred to as Snapshot, will accelerate development of steel chemistry for thermal processing. As an effective method for faster sampling, tailoring and understanding of chemical composition of filler material in conjunction with base material and applied welding process, more chemically suitable thermal processing will be enabled. In this project, it will closely imitate the here studied and applied thermal processes laser-arc hybrid welding, laser beam welding and laser cutting.
Planned structure and implementation
Six project partners with complementary steel expertise will study three techniques. Laser-arc hybrid welding is suitable to join advanced high strength steels compared to other techniques, provided the filler wire chemistry is matched. For its joint edge preparation, laser cutting is a candidate to further decrease energy and costs, provided uncontrolled melt oxidation that demands lower speed can be reduced. For bi-metal laser welding of sawblades imperfections can arise that require significant rework by current practices, and therefore needs development of prevention techniques.
Division of Solid Mechanics, Lund University
SSAB EMEA AB
Erasteel Kloster AB