This utility model relates to a
welding device for
boiler water-cooled wall components, including a
welding torch, a rotating device, and a magnetic chuck device. The rotating device includes a first gear, a second gear, a third gear, a fourth gear, a motor, a motor cage, a first shaft, and a second shaft. The magnetic chuck device includes a car body, a roof
bushing, a first wheel, a second wheel, an
electromagnet, a first worm gear, a first worm, and a first
micro motor. The
welding torch is installed in the rotating device. Two identical magnetic chuck devices are symmetrically arranged on both sides of the rotating device. The magnetic chuck device used in this utility model can be manipulated by personnel to attach to the vertical water-cooled wall and move on the
boiler water-cooled wall. Since the water-cooled wall is made of
metal, mostly steel, magnetic attraction can be generated by energizing the
electromagnet. The rotating device allows the
welding torch to rotate after the magnetic chuck device is fixed to the water-cooled wall, thereby adjusting to a suitable welding angle.