Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
2005-09-27
2005-09-27
Stoner, Kiley S. (Department: 1725)
Metal founding
Process
Shaping liquid metal against a forming surface
C164S480000
Reexamination Certificate
active
06948550
ABSTRACT:
A process for manufacturing a strip of aluminum alloy having high surface homogeneity with an upper side showing after a 1 μm thick sulphur anodic treatment, an optical roughness value SNmeasured on three 5 cm longitudinal sections and three 5 cm transverse sections, such that its mean variation on each section, defined by the ratio: (Maximum SN−minimum SN)/Mean SNis less than 20%, and the difference ΔSN=SNmax −SNmin is less than 20. The strip is manufactured by continuous casting between two cooled rolls from a casting tank containing the liquid metal connected to an injector, and feeding the liquid metal into the gap between the two rolls. The injector has an upper lip recessed by at least 2 mm with reference to a lower lip of the injector.
REFERENCES:
patent: 24 43 068 (1974-09-01), None
Debreux Regine
Hoffmann Jean-Luc
Maiwald Klaus
Menet Pierre-Yves
Scelles Yves
Dennison Schultz Dougherty & MacDonald
Pechiney Rhenalu
Stoner Kiley S.
Tran Len
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