Dose liquid nitrogen shrink installation cause stress residue

[Joe Chen]

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.

 

[JJPellin]

What are the materials involved? Some materials will take a permanent dimensional change if cooled in liquid N2.

Johnny Pellin

 

[Joe Chen]

The material is SS41.

 

[hydtools]

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

Ted