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Why stress reliving required in fabricated items before machining.?

April 26, 2017Engineering fabricated items machining Mathematics stress

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Why stress reliving required in fabricated items before machining.?

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Stress relieving does several things. First, it brings the component back to a stress free condition so that residual stresses do not need to be accounted when performing strength analysis of the final component. Secondly, there is nothing worse than fixturing a welded structure and doing the final machining only to have it not remain flat/parallel/or whatever due to internal stresses after it is removed from the fixture.