316L Plate warpage after machining
316L Plate warpage after machining
(OP)
Help! I'm trying to machine some plates made from 316L. I purchased the blanks water-jet cut to 9.00 x 7.08 and double disk ground to .400 thick. I'm machining a pocket that leaves .450 on each side and the floor thickness at .113. My problem is the corners are cupping up. The floor has a parallism (sp) call-out of .002 to the bottom of the plate. Can I aneal these parts after machining to get them back to being flat? Do I need to leave some material on the floor of the pocket, aneal, then finish machine? Any help would be appreciated. I have prints I can email if needed. Thx, Derek





RE: 316L Plate warpage after machining
If it is a bow or twist You might try mechanically flattening the parts a couple of times during the machining process.
If it is all over, then maybe rough machine and re-anneal is the only option. Keeping them flat after cooling from anneal will be a real trick.
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RE: 316L Plate warpage after machining
RE: 316L Plate warpage after machining
... Well, it works on acrylic plastic...
Mike Halloran
Pembroke Pines, FL, USA
RE: 316L Plate warpage after machining
You had acrylic warp? Man, I had to anneal polycarb, but in all my years of machining plastics, I never had acylic warp.
I talked with the metal distributor, DIX Metals, and they said that it might be possible to anneal the parts after rough machine, and they would stay as flat as the platens that the parts are pressed between. Sounds like Ed had the right idea. It will depend on how slowly they lower the temp.
RE: 316L Plate warpage after machining
Mike Halloran
Pembroke Pines, FL, USA
RE: 316L Plate warpage after machining
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: 316L Plate warpage after machining