Rolling of 6061 T6 Aluminum 1

[rlangdon]

I am having a problem with flat spots when trying to roll 1/8" die cut sheets of 6061 T6 Aluminum. The diameter is around 18 inches. I was going to try sandwiching it between something, but can't waste any material. Any ideas?

Thanks

Ryan Langdon, CMfgT
Essex Cryogenics of Missouri

 

[aviat]

The material is probably too hard to form in the T6 condition. Heat treated Al usually has to be formed in the annealed (O) condition and then heat-treated to desired strength. If a lot of forming is required, the material requires annealing between operations, because it work hardens