Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1993-10-22
1995-07-25
Larson, Lowell A.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72271, B21C 3100
Patent
active
054351618
ABSTRACT:
A method of extruding a plurality of billets. The method includes (a) preheating a billet to a preheat temperature; (b) extruding the billet so that the exit temperature of the extrusion is within a predetermined temperature range; (c) measuring the extrusion pressure during (b); (d) comparing the measured extrusion pressure to a reference pressure range; (e) if the extrusion pressure was below said reference pressure range, resetting the preheat temperature so that it is lowered by a predetermined increment; (f) if the extrusion pressure climbed above the reference pressure range, resetting the preheat temperature so that it is raised by a predetermined increment; (g) preheating another billet to the preheat temperature; and (h) repeating (b)-(g) until all the billets have been extruded. In a preferred embodiment, the billet is formed form an aluminum alloy.
REFERENCES:
patent: 2249353 (1941-07-01), Fritzlen
patent: 2863557 (1958-12-01), Munker
patent: 3670542 (1972-06-01), Kemppinen et al.
patent: 3798942 (1974-03-01), Brackow
patent: 4056963 (1977-11-01), McDonald et al.
patent: 4066480 (1978-01-01), Gullotti et al.
patent: 4675826 (1987-06-01), Gentry et al.
patent: 4843576 (1989-06-01), Smith et al.
patent: 5167138 (1992-12-01), Sinha et al.
patent: 5325694 (1994-07-01), Jenista
Aluminum Company of America
Larson Lowell A.
Pearce-Smith David W.
LandOfFree
Extrusion method utilizing variable billet preheat temperature does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Extrusion method utilizing variable billet preheat temperature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrusion method utilizing variable billet preheat temperature will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-732902