Automatically weld all the seals on the brass water tank with precise temperature control to avoid burning through or deforming the brass; the welds are even with no missed spots, greatly reducing leaks and keeping pressure sealing stable; it can work continuously for 24 hours, replacing several welders, boosting productivity, and saving on welding materials and labor costs; it reduces the risk of harm from high-temperature welding fumes, and standardized welding parameters mean the results don't depend on the worker's skill level.