Hydrogen and internal stress failures are relatively rare;however, when they occur they are often very costly and sometimesquite catastrophic. While hydrogen and internal stress issues aregenerally recognized as significant in the design and manufactureof larger gears, they are also important for smaller gears as well.This paper presents, via illustrated actual case studies, themechanisms by which these failure occur, the manner in which theyprogress, and methods for testing finished gears for thepossibility of internal problems. In addition, precautionary stepsthat can be taken during design, manufacture, heat treatment andquality control to minimize the possibility of these problemsoccurring in a finished part along with similar steps required toprevent any flawed gears from entering service are also presentedand discussed.
- Edition:
- 08
- Published:
- 10/01/2008
- Number of Pages:
- 11
- File Size:
- 1 file , 770 KB
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