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kross1968
Participant

Join Date: Oct 2010
Posts: 2
Good Answers: 1

Warpage

10/21/2010 10:58 AM

While machining 6061-T6511 plate material 16" long x 9.312 wide with 2 thicknesses of .528" and stepped to .2125" i am experiencing a warpage of .003 - .009" warpage. We rough machine the blank then stress relieve it at 350° for 4 hours than finish machine the part. Is there anything we can do differently that would reduce the amount of warpage we are getting.
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lyn
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Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: Warpage

10/21/2010 5:21 PM

You could remove some material from the opposite side of the plate in those areas, thus equalizing the stress.
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JCS
Associate

Join Date: Jul 2010
Posts: 50
#2

Re: Warpage

10/24/2010 5:41 AM

Check the PWHT heat input and cooling rates, probably you got you increase the time and decrease the heat input increments, did you provide stiffeners during PWHT process?
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