– The course blends theory with practice in our laser lab and it's very stimulating to give. It always comes up issues and problems that the industry has and that gives ideas for our research projects, says Hans Engström, Luleå University of Technology, coordinator of the course and with long experience in laser processing.
Laser welding is a high productivity joining method for the modern manufacturing industry. It is increasingly replacing conventional welding methods such as MIG/MAG and TIG welding. The European Welding Federation (EWF) has developed an independent special course in laser welding that Luleå University of Technology is alone to provide in Swedish. Professor Alexander Kaplan, Chair at the research subject Manufacturing Systems Engineering, is responsible for the course that is given in cooperation with the Swedish Welding Commission.
– In the course, we use a fibre laser at 15 kW together with high speed filming to be able to study the process in detail. Both engineers and operators in industry and academia have taken the course and those who pass it receive an international EWF diploma, says Hans Engström.
Fast and powerful laser hybrid
Jan Frostevarg, senior lecturer at the subject Manufacturing Systems Engineering, is a specialist in laser hybrid welding that involves combining laser welding with conventional arc welding.
– Laser hybrid welding is a very promising technique with many advantages. You get the welding depth and speed from the laser while you also can fill the weld joint with materials and alloys. For thick materials that normally requires over ten welds, you only need one or two in laser hybrid welding. The welding process is also much faster. The course is very appreciated and the participants ask many questions about the technology and about different applications, says Jan Frostevarg.
Christian Johansen, technical manager at Sandvik Process Systems, was one of the participants in the welding course. He is particularly pleased about the opportunity to improvise to do welding applications similar to the challenges they have at Sandvik Process Systems.
– The course had a good balance between theory, practice and self studies, allowing the things we have learned to become lasting. The theoretical part is very useful for our future development in laser welding. Now we will go from believing to actual facts.