Inconel 625 Cold Working
Inconel 625 Cold Working
(OP)
All,
Currently in our shop we are heating 1/2" diameter 0.065" wall tubing filled with a magnesium oxide to 1600 Deg. F then rapid water quench to prevent cracking during bending. The inner radius of the material when bent is a 3/4" inner radius. We are currently having issues with cracking during bending process and i am trying to figure out what are the best options to get the softest material from heat treatment. Would a full solution quench and anneal be my best bet in achieving the softest material for bending? I might have forgot some details but thank you everyone in advance.
Currently in our shop we are heating 1/2" diameter 0.065" wall tubing filled with a magnesium oxide to 1600 Deg. F then rapid water quench to prevent cracking during bending. The inner radius of the material when bent is a 3/4" inner radius. We are currently having issues with cracking during bending process and i am trying to figure out what are the best options to get the softest material from heat treatment. Would a full solution quench and anneal be my best bet in achieving the softest material for bending? I might have forgot some details but thank you everyone in advance.





RE: Inconel 625 Cold Working
Yes.
RE: Inconel 625 Cold Working
RE: Inconel 625 Cold Working
Don't you buy the tube?
Order it solution annealed, and set a max yield strength and min elongation.
Your heating to 1600F may be lowering the ductility.
Given that the centerline of your bend in 1.25", which is only 2.5x the tube diameter. This is tight but should be doable.
Are you sure that you don't have them filled too tight? When you bend you get some ovaling of the tube and some thinning of the outer wall.
You need both of these, you can't make a tight bend without allowing some oavlity.
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Plymouth Tube
RE: Inconel 625 Cold Working
RE: Inconel 625 Cold Working
A CL bend R of 2X the tube OD is pushing things a bit with 1/2" x .065 wall tubing. Also, what is the included angle of the bend?
RE: Inconel 625 Cold Working
The Cr that is tied up in surface Cr oxides is not available to help prevent corrosion resistance.
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Plymouth Tube