Process for stretch forming age-hardened aluminum alloy sheets

Details Process for stretch forming age-hardened aluminum alloy sheets Process for stretch forming age-hardened aluminum alloy sheets

1998-10-09

2000-03-07

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148691, 148698, 148695, 723421, C22F 104

Patent

active

060334991

ABSTRACT:
In the stretch forming of aluminum alloys using a punch and a mating die cavity, the stretch formability of a sheet of age-hardened aluminum alloy is increased by selectively heat treating the sheet to soften at least a portion of the sheet that will underlie a punch surface but not be drawn over a radius of the punch.

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patent: 5948185 (1999-09-01), Krajewski et al.

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