A welding machine is a device used to join metal parts by generating intense heat to melt and fuse materials together. It operates using various technologies such as arc welding, MIG, TIG, and spot welding, each suited for different applications. Arc welding machines use an electric current to create a high-temperature arc between the electrode and the metal. MIG welders utilize a wire electrode and shielding gas for smooth, continuous welding. TIG welders offer precision by using a non-consumable tungsten electrode. Spot welding machines apply pressure and heat to join thin metal sheets. These machines are widely used in construction, automotive, manufacturing, and repair industries. Modern welding machines come with adjustable settings for better control and efficiency. Safety precautions, such as protective gear and ventilation, are essential while using them.