This method involves the use of material insulated with a special epoxy resin (BACKLACK), which, when subjected to an external heat source, drastically decreases its viscosity until it melts. During the cooling phase, the viscosity of the resin stabilizes, ensuring high adhesiveness and high resistance to various types of external agents.
With this stacking method, the laminations are stacked and pressed, then welded outside using a TIG welder, creating weld seams along the entire height of the stack.
Compared to traditional welding, laser welding allows for better control of the process and significantly higher quality, as it is possible to control the width, depth, and shape of the weld seam.