Micropitting and pitting are fatigue failures that occur on case carburized gears. The performance of lubricants in regard to micropitting and pitting can be evaluated by test methods. The FVA-FZG-micropitting test consists of two parts: a load stage test followed by an endurance test. The tests require relatively high costs and are time consuming. Therefore an analogous short test method was developed to classify candidate lubricants@ and supplement the existing test. The results of the short test method are given. The FVA-FZG-pitting test is for limited-life using test gears@ which are ground without controlled profile or helix modifications. Although the flank roughness is restricted@ the appearance of micropitting can cause a wide statistical spread of pitting test life. Thus@ there was potential improvement in the test results reproducibility. In the test gears were superfinished to prevent micropitting@ and given flank modifications for improved test relevance. The paper describes test procedures and shows basic examples of test results.
06FTM07-2006由AGMA - American Gear Manufacturers Association 发布于 2006-10-01,并于 2008-03-04 实施。
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