Pitting corrosion in spur gears

[mc02076]

Greetings,

I decided to use a professional calculation package for machine design procedures in order to speed up the design process. This package somehow calculates a safety factor for pitting corrosion for spur gears. However I haven't been able to figure out how this is calculated. So far I thought that this cant be calculated and that it is a condition monitoring issue to diagnose it before failure. Does anyone have any idea on what formulas are used for pitting corrosion safety factors?

Thanks for reading

 

[CoryPad]

The formulas come from a standard like this one:

ISO 6336-2 Calculation of load capacity of spur and helical gears - Part 2: Calculation of surface durability (pitting)

Pitting of gears is not due to corrosion, it is due to wear and cracking from contact stresses.

 

[metengr]

....and for wind turbine gear boxes, gear life rating for pitting resistance and bending strength,

American Gear Manufacturers Association (AGMA);
6006 A03
2101-C95