Laser welding machines use a high-precision laser beam to fuse metals and thermoplastics, producing low thermal distortion and clean welds. They are commonly used for welding sensitive materials and are often automated for high-speed production. The process can be performed under atmospheric conditions or with inert gas shielding, and filler material may be added for specific applications. Laser welding is a versatile process that can weld a wide range of materials, including low-carbon steel, stainless steel, aluminum, titanium, and even challenging combinations like copper-copper and copper-aluminum. While the initial equipment cost is higher than traditional welding processes, laser welding offers lower operating costs, higher welding speeds, and the ability to produce narrow, deep welds for thicker materials.