What are the specific manifestations of gear damage in SF67-YB3KW-52-M6 hard tooth reducer

The specific manifestations of gear damage in SF67-YB3KW-52-M6 hard tooth reducer are as follows:

Tooth surface wear: Scratches, pitting, peeling and other phenomena appear on the tooth surface, resulting in thinning of tooth thickness, deformation of tooth profile, and increased meshing clearance. As the wear intensifies, the dynamic load on the gear increases, and the vibration and noise will also significantly increase.

Gear tooth breakage: can be divided into fatigue tooth breakage, overload tooth breakage, and local tooth breakage. Fatigue tooth breakage is caused by the combined action of pulsating cyclic alternating stress and stress concentration sources at the root of the gear teeth, resulting in fatigue cracks that gradually propagate and expand; Overloaded tooth breakage occurs due to severe overload or impact load, causing the stress on the critical section of the tooth root to exceed the limit value; Partial tooth breakage is caused by low machining accuracy or poor installation quality of the tooth surface, resulting in biased loading at the end of the tooth and excessive local stress. When the gear breaks, the equipment will suddenly stop, accompanied by severe abnormal noise.

Tooth surface bonding: Tooth surface bonding is characterized by the appearance of bonding scratches on the tooth surface. This is due to the rupture of the oil film on the meshing tooth surface during relative sliding, and the direct contact between the tooth surfaces. Under the action of friction and pressure, the contact area generates instantaneous high temperature, and the metal surface undergoes local welding adhesion and peeling. Glue bonding will accelerate the wear of the tooth surface, causing gear transmission to quickly become ineffective.

Tooth surface fatigue: Under repeated loading, when the stress generated on the tooth surface or under the surface layer exceeds the fatigue limit of the material, metal peeling phenomena such as pitting, peeling, and surface crushing may occur. Among them, pitting corrosion mostly occurs on the lower tooth surface near the pitch line. The initial pitting corrosion may appear shortly after the start of operation. If it is extensive pitting corrosion, the pits will continue to crack until the tooth surface is completely damaged.

Plastic deformation: Gear teeth may experience plastic deformation phenomena such as rolling deformation, hammering deformation, wrinkling, ridges, and flying edges, manifested as grooves and ridges near the pitch line, periodic ripple patterns on the tooth surface, plastic flow of materials on the tooth surface and subsurface in a certain direction to form strip-shaped protrusions, and protruding materials on the tooth top surface and tooth width end.