公开(公告)号：DE60123737T2

公开(公告)日：2007-10-04

申请号：DE60123737

申请日：2001-12-11

Applicant: ALCOA INC

Inventor： HARENSKI JOSEPH P ,  KAUFOLD ROGER W ,  MORRISSEY BRIAN J ,  SHADWICK ROBERT L ,  WIESERMAN LARRY F

IPC: C21D1/70 ,  B23K35/22 ,  C21D1/00 ,  C22F1/04

Abstract: A method of treating a surface of a stacked aluminum alloy ingot during a heating process. Spacer blocks are positioned adjacent aluminum alloy ingots to form a stack, wherein the spacer block has a support surface contacting a contact surface of the aluminum alloy ingot, and at least one of the support surface and the contact surface include a fluorine containing material. The stack is heated to at least a temperature at which the fluorine containing material decomposes or vaporizes such that a layer of a fluorinated oxide compound is formed at the interfaces between the ingots and the spacer blocks.

公开(公告)号：DE60123737D1

公开(公告)日：2006-11-23

申请号：DE60123737

申请日：2001-12-11

Applicant: ALCOA INC

Inventor： HARENSKI JOSEPH P ,  KAUFOLD ROGER W ,  MORRISSEY BRIAN J ,  SHADWICK ROBERT L ,  WIESERMAN LARRY F

IPC: C21D1/70 ,  B23K35/22 ,  C21D1/00 ,  C22F1/04

Abstract: A method of treating a surface of a stacked aluminum alloy ingot during a heating process. Spacer blocks are positioned adjacent aluminum alloy ingots to form a stack, wherein the spacer block has a support surface contacting a contact surface of the aluminum alloy ingot, and at least one of the support surface and the contact surface include a fluorine containing material. The stack is heated to at least a temperature at which the fluorine containing material decomposes or vaporizes such that a layer of a fluorinated oxide compound is formed at the interfaces between the ingots and the spacer blocks.