Compared with the traditional welding method, laser welding has significant advantages - low heat input, fast welding speed, small heat affected zone, small thermal deformation, etc. In recent years, laser welding has been widely used in the automotive industry, the shipbuilding industry, High-tech industries such as nuclear power industry and aerospace industry are becoming more and more widely used, and with the reduction of the cost of complete sets of equipment, applications in daily hardware and other life-related fields have begun to grow rapidly.
In order to meet the needs of the development of various industries, the methods and methods of laser welding have also improved. Due to its concentrated welding energy and small deformation, laser filler wire welding can reduce the gap margin during butt welding and reduce welding defects. It has become an effective alternative to traditional arc welding in rail transit and automotive industries.
Today, let us know the magical effect of laser filler welding.
In laser filler wire welding, lasers are generally selected from high power fiber lasers. The laser not only needs the welding wire, but also needs to melt the base metal and form a special pore effect on the base metal to form a deep molten pool. The welding wire component and the base metal component are fully mixed to form a new mixing table. The molten pool, the elemental composition of the mixed pool and its proportion and quality are relatively different from the welding wire and the base material, so that the appropriate welding wire can be added to the welding process for the performance defect of the base material itself, thereby At the microscopic level, the crack resistance, fatigue resistance, corrosion resistance and wear resistance of the weld are purposefully improved.
In addition, laser filler wire welding can be used for multi-segment welding, because deep-fusion welding with small hole effect can be realized, and the full melting table of the upper and lower welding bead can be realized to avoid serious defects of unfused, so that The ability to weld large thickness joints.
With the development of laser filler wire welding technology and the increase of laser power ceiling, the application range of laser filler wire welding is more and more extensive:
1 laser filler wire welding aluminum alloy
2 laser filler wire welding of dissimilar metals
3. Improve weld formation
4. Narrow gap filler wire welding