Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1995-08-24
1998-07-07
Simmons, David A.
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148439, 420530, 420532, 420535, 420537, C22C 2100
Patent
active
057762694
ABSTRACT:
A process for making an essentially lead-free screw machine stock alloy, comprising the steps of providing a cast aluminum ingot having a composition consisting essentially of about 0.55 to 0.70 wt. % silicon, about 0.15 to 0.45 wt. % iron, about 0.30 to 0.40 wt. % copper, about 0.8 to 0.15 wt. % manganese, about 0.80 to 1.10 wt. % magnesium, about 0.08 to 0.14 wt. % chromium, nor more than about 0.25 wt. % zinc, about 0.007 to 0.07 wt. % titanium, about 0.20 to 0.8 wt. % bismuth, about 0.15 to 0.25 wt. % tin, balance aluminum and unavoidable impurities; homogenizing the alloy at a temperature ranging from about 900.degree. to 1060.degree. F. for a time period of at least 1 hour; cooling to room temperature; cutting the ingot into billets; heating and extruding the billets into a desired shape; and thermomechanically treating the extruded alloy shape.
REFERENCES:
patent: 2026575 (1936-01-01), Kempf et al.
patent: 2026576 (1936-01-01), Kempf et al.
patent: 2076571 (1937-04-01), Kempf et al.
patent: 4010046 (1977-03-01), Setzer et al.
patent: 4066480 (1978-01-01), Gullotti et al.
patent: 4589932 (1986-05-01), Park
patent: 5122208 (1992-06-01), Alabi
patent: 5176763 (1993-01-01), Byrne et al.
patent: 5192378 (1993-03-01), Doherty et al.
patent: 5194102 (1993-03-01), Wyss
patent: 5240522 (1993-08-01), Tanaka et al.
patent: 5282909 (1994-02-01), Ara et al.
patent: 5342459 (1994-08-01), Klemp et al.
patent: 5587029 (1996-12-01), Sircar
Coats, II Norman LeRoy
Farrar, Jr. Larry E.
Elve M. Alexandra
Haynes Gerald D.
Kaiser Aluminum & Chemical Corporation
McGarrigle Philip L.
Simmons David A.
LandOfFree
Lead-free 6000 series aluminum alloy does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lead-free 6000 series aluminum alloy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lead-free 6000 series aluminum alloy will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1201424