In recent years, China has improved the traditional fusion welding process and innovated a new type of aluminum casting repair process. It uses atomic diffusion to bond the base metal and filler material together, and uses this method to repair the surface of aluminum castings. Whether it is in terms of color and hardness, the repair is very perfect, and there will be no fine cracks, which can meet relatively high industrial requirements. Not only is the repair efficiency high, but it also has relatively high economic benefits. Most of the casting defects in aluminum castings are concentrated on the surface or inside, where pores, sand holes, etc. may appear. If traditional repair methods are used, an electric welding machine is used for repair. This repair method can make the hardness of the welding point too high after welding, which can easily cause stress inside the aluminum casting, deformation, and cracks. After welding, annealing heat treatment is also required to meet the requirements.
However, when using an aluminum casting defect repair machine to repair worn areas on objects, the heat generated during welding is particularly small, so the aluminum castings repaired by welding have basically no hard spots, no color difference, no undercutting and stress, and no cracks.