The pitting corrosion of the gear tooth surface of the electric stacker forklift is a frequent damage form of the closed gear transmission. Because the closed gear transmission gear of the electric stacker works in lubricating oil, the tooth surface is subjected to pulsating contact stress for a long time, which will gradually produce a large number of small cracks that form a sharp angle with the tooth surface. The surface cracks are full of lubricating oil. During meshing, due to the mutual extrusion of the tooth surfaces, the oil pressure in the cracks increases, which makes the cracks continue to expand, and finally causes the surface of the tooth surface to peel off piece by piece, and a large number of small fan-shaped pits appear on the tooth surface. This is the tooth surface. Surface pitting phenomenon. If the pitch circle is used as the boundary, the electric stacker gear is divided into two parts: the root and the top, and the pitting is serious at the tooth surface of the heel near the pitch circle and the tooth surface of the top of the pitch circle; Among the gears, the active pinion is severely pitted. The consequence of pitting corrosion is not only the appearance of many small pits on the tooth surface, but also the increase of the tooth profile error, the generation of dynamic load, and the possible breakage of the gear teeth.
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