What are the main failure modes of closed soft-tooth-surface gear transmission?

[HaydenRose]

The main failure modes of closed soft-tooth-surface gear transmission are: 1. Tooth breakage: Tooth breakage usually occurs in two situations, one is fatigue breakage caused by repeated bending stress and stress concentration, and the other is overload breakage caused by sudden severe overload or impact load; 2. Plastic deformation: Generally occurs on tooth surfaces with low hardness, but can also appear on high-hardness gears under heavy loads; 3. Pitting corrosion: During gear operation, under the repeated action of alternating contact stress at the meshing point, small cracks will form on the tooth surface near the pitch line. As these cracks expand, they will cause small pieces of metal to peel off, a phenomenon known as pitting corrosion; 4. Tooth surface adhesion: For high-speed and heavy-load gear transmissions, tooth surface adhesion is prone to occur. Additionally, low-speed and heavy-load heavy-duty gear transmissions can also experience tooth surface adhesion failure, known as cold adhesion.