The utility model relates to the technical field of steel structure
machining, in particular to a groove
grinding device for steel plate
welding, which comprises a
handle, a
grinding wheel and a semicircular baffle disc, a driving part for driving the
grinding wheel to rotate is arranged in the
handle, and the semicircular baffle disc is mounted between the
handle and the
grinding wheel and positioned on one side, close to the handle, of the
grinding wheel. A movable blocking cover is detachably installed at the opening end of the semicircular blocking disc, material blocking ripping fences are arranged on the outer contours of the movable blocking cover and the semicircular blocking disc, the end faces of the sides, close to the
grinding wheel, of the material blocking ripping fences do not exceed the non-working face of the grinding wheel, and a plurality of magnets used for attracting steel scraps are arranged on the surfaces of the sides, close to the grinding wheel, of the movable blocking cover and the semicircular blocking disc. The problems that when a bevel slope of a traditional steel plate is polished before
welding, a worker needs to hold an
angle grinder by hand for operation, waste chips generated during
polishing are likely to splash to the worker, the worker is damaged, and potential safety hazards exist are solved.