Shrinkage Fitting

[ShamoonTariq]

I want to know the temperature for shrinkage fitting. i want to fit a ring of outer dia 715mm, inside dia 675mm into hole of dia 684, then upto how much temperature i have to cool ring to fit into the hole ?

 

[MikeHalloran]

Do you know the material of which the ring, and the hole, are made?

WE DON'T.


Mike Halloran
Pembroke Pines, FL, USA

 

[ShamoonTariq]

Material is Cast iron grade-250

 

[monkeydog]

Is this what you are looking for?

http://www.aerofit.com/sma_Couplings.html

 

[jhardy1]

Cast iron has a coefficient of thermal expansion of around 10.5x10^-6 m/m/K

To fit a 715 diameter ring into a 684 diameter hole, you need a shrinkage strain of about 4.3%.

This would need a temperature drop of around 4000 K (or a temperature rise in the hole of around the same amount, assuming it is also cast iron).

Are you sure your parameters are correct?

Student question?

http://julianh72.blogspot.com

 

[ShamoonTariq]

Thanks a lot to everyone