公开(公告)号：CA2890915A1

公开(公告)日：2014-05-15

申请号：CA2890915

申请日：2013-05-10

Applicant: ALCOA INC

Inventor： SHEU SHEN ,  WISE JULIE A ,  KASUN TOM J ,  WHITTLE NEVILLE C ,  EPP JUNE M ,  COLEMAN DAVID E ,  PANSERI NORMAN J ,  MARCILLA GOMIS SALVADOR A ,  STEWART PATRICIA A

IPC: B21B1/22 ,  B21B27/00 ,  B21H8/00 ,  B24C1/06 ,  C21D7/06

Abstract: A method for surface treating work rolls to produce isotropic textured aluminum sheet features indenting the surface of the working rolls that produce the sheet with spherical media such as steel ball bearings having the requisite properties to avoid fracture and resulting in a smooth surface lacking facets. The spherical media can be introduced into a nip between two rolls and indent by compression, but ultrasonic peening or knurling. The aluminum sheet produced by the roll has properties that facilitate mechanical forming, such as when the sheet is processed by forming tools.