A:
In the process of gear transmission in reducers, tooth surface wear is inevitable. Tooth surface wear also includes adhesive wear, abrasive wear, scoring, corrosive wear, and scuffing. For adhesive wear, lubrication is the primary factor. If the lubricating oil film is complete and sufficiently thick, metal-to-metal contact will be reduced, and wear will not occur.
If the oil film temperature and pressure are the same, higher oil viscosity results in less wear. Under conditions of low speed, heavy load, or extreme temperatures, the oil film may break down. In such cases, wear occurs on most of the tooth surface except for the pitch circle. This type of wear can be improved by increasing tooth surface hardness, reducing surface roughness, and increasing oil viscosity.
Abrasive wear and scoring mainly refer to impurities in the lubricant or the generation of wear debris due to metal-to-metal contact during operation, leading to gear wear in the reducer and causing transmission failure.
If the gear alignment is proper and scoring is not caused by raised micro-convexities on the tooth surface, the wear will extend to most areas of the gear. Corrosive wear refers to chemical reactions between substances in the lubricant and the metal on the tooth surface, resulting in metal corrosion.
