Method of manufacturing extruded structural profiles from alumin

Details Method of manufacturing extruded structural profiles from alumin Method of manufacturing extruded structural profiles from alumin

1975-07-08

1977-06-14

Lanham, C.W.

Metal working

Method of mechanical manufacture

Scrap recovering or utilizing

294205, 72 38, 72263, 72270, 29DIG47, B21C 2301, B21C 2304

Patent

active

040287955

ABSTRACT:
Aluminum or aluminum alloy scraps or wastes are broken into chips and converted into a cylindrical body to be extruded under a temperature suitable to produce extruded structural profiles. The method is characterized by the fact that the interior of the extruder is evacuated prior to or simultaneously with the extrusion step so as to exhaust air entrapped in the cylindrical body.

REFERENCES:
patent: 1197026 (1916-09-01), Hiller
patent: 2358667 (1944-09-01), Stern
patent: 2391752 (1945-12-01), Stern
patent: 2738063 (1956-03-01), Billen
patent: 2954869 (1960-10-01), Swanson
patent: 3164253 (1965-01-01), Muller
patent: 3626578 (1971-12-01), Price et al.
patent: 3643873 (1972-02-01), George
patent: 3757410 (1973-09-01), Roberts

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