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Dose liquid nitrogen shrink installation cause stress residue

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Joe Chen

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Oct 21, 2016
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Dear All

Due to the inner diameter (340 mm) of the bushing is required in the post-lathe process, how long does the liquid nitrogen shrinkage fitting installation need to stress relieve before precision machining to the finished size.
 
What are the materials involved? Some materials will take a permanent dimensional change if cooled in liquid N2.

Johnny Pellin
 
There will remain internal stress at long as there is an interference fit.

Ted
 
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