Method for improving the hemmability of age-hardenable aluminum

Details Method for improving the hemmability of age-hardenable aluminum Method for improving the hemmability of age-hardenable aluminum

1997-05-01

1999-09-07

Ryan, Patrick

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148691, 148694, 148688, 148695, 148417, 148415, 148416, C22C 2100

Patent

active

059481854

ABSTRACT:
An improved method of forming a severe bend or a hem in a sheet of wrought aluminum age-hardened and age-hardenable alloy includes heating the region to be bent or hemmed to a temperature above about 250.degree. C. for a period of seconds and then quenching the heated region to remove the age-hardening effect and thereafter accomplishing the bend or hem before age hardening of the heated region occurs.

REFERENCES:
patent: 3856584 (1974-12-01), Cina
patent: 3945861 (1976-03-01), Anderson et al.
patent: 4405386 (1983-09-01), Mravic et al.
patent: 4766664 (1988-08-01), Benedyk
patent: 5525169 (1996-06-01), Murtha
Element of materials science Van Vlack. pp. 275-313, .COPYRGT.1964.
ASM Metals Handbook 9th ed. vol. 2 pp. 24-32 & 50-51.

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