Method for sliver elimination in shearing aluminum sheet

Details Method for sliver elimination in shearing aluminum sheet Method for sliver elimination in shearing aluminum sheet

1997-05-15

2000-04-04

Ryan, Patrick

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148698, 148415, 148437, 420528, C22F 100

Patent

active

060456361

ABSTRACT:
Age-hardened aluminum alloy sheet can be subjected to a shearing operation, such as trimming or piercing, with reduced sliver formation by first heating the region to be sheared to a temperature above about 250.degree. C., immediately quenching the heated region to soften the region, and then performing the shearing operation in the softened region before age-hardening occurs.

REFERENCES:
patent: 3856584 (1974-12-01), Cina
patent: 4235646 (1980-11-01), Neufeld et al.
patent: 4614552 (1986-09-01), Fortin et al.
patent: 4766664 (1988-08-01), Benedyk

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