Jul 27, 2015 #1 ShamoonTariq Mechanical Joined Jul 27, 2015 Messages 4 Location PK 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 ?
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 ?
Jul 28, 2015 #2 MikeHalloran Mechanical Joined Aug 29, 2003 Messages 14,450 Location US Do you know the material of which the ring, and the hole, are made? WE DON'T. Mike Halloran Pembroke Pines, FL, USA Upvote 0 Downvote
Do you know the material of which the ring, and the hole, are made? WE DON'T. Mike Halloran Pembroke Pines, FL, USA
Jul 28, 2015 Thread starter #3 ShamoonTariq Mechanical Joined Jul 27, 2015 Messages 4 Location PK Material is Cast iron grade-250 Upvote 0 Downvote
Jul 28, 2015 #4 monkeydog Aerospace Joined Jul 15, 2002 Messages 825 Location US Is this what you are looking for? http://www.aerofit.com/sma_Couplings.html Upvote 0 Downvote
Jul 28, 2015 #5 jhardy1 Structural Joined Jan 26, 2004 Messages 930 Location AU 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 Upvote 0 Downvote
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
Aug 1, 2015 Thread starter #6 ShamoonTariq Mechanical Joined Jul 27, 2015 Messages 4 Location PK Thanks a lot to everyone Upvote 0 Downvote