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Gear Failure Analysis Involving Grinding Burn - January/February 2009

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Archive > 2009 > January/February 2009 > Gear Failure Analysis Involving Grinding Burn

The article "Gear Failure Analysis Involving Grinding Burn" appeared in the January/February 2009 issue of Gear Technology.

Summary
When gears are case-hardened, it is known that some growth and redistribution of stresses that result in geometric distortion will occur. Aerospace gears require post case-hardening grinding of the gear teeth to achieve necessary accuracy. Tempering of the case-hardened surface, commonly known as grinding burn, occurs in the manufacturing process when control of the heat generation at the surface is lost.

Keywords
grinding burn, aerospace gears, failure, magnetic particle inspection, crack propagation, nital etch

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