Surface quality enhancement of aerospace skin sheet
AssigneeAlcoa Inc.
InventorsDavid Dean Sullivan, Larry Kerschner
Life of this patent
Estimating the term…
Abstract
The present invention is directed to polishing the surface of an airplane part to an improved specularity by adding the additional step of sanding prior to the polishing step.
Claims62
A process for making an aluminum or aluminum alloy surface smooth and shiny for use as an airplane part wherein substantially the entire outside surface of said airplane part or portions thereof are sanded and subsequently substantially the entire sanded surface of said airplane part or portions thereof are buffed.
A process for making an aluminum or aluminum alloy surface smooth and shiny for use as an airplane part wherein substantially the entire outside surface of said airplane part or portions thereof are sanded and subsequently substantially the entire sanded surface of said airplane part or portions thereof are buffed whereby an Ra value for longitudinal and transverse roughness is about 0.200 to about 0.400 and the range of values for Rz peak to valley is about 0.300 to about 1.100.
A process for making an aluminum or aluminum alloy surface smooth and shiny for use as an airplane part wherein substantially the entire outside surface of said airplane part or portions thereof are sanded and subsequently substantially the entire sanded surface of said airplane part or portions thereof are buffed whereby an Ra value for longitudinal and transverse roughness is about 0.220 to about 0.380 and the range of values for Rz peak to valley is about 0.400 to about 1.00.
A process for making an aluminum or aluminum alloy surface smooth and shiny for use as an airplane part wherein substantially the entire outside surface of said airplane part or portions thereof are sanded and subsequently substantially the entire sanded surface of said airplane part or portions thereof are buffed whereby an Ra value for longitudinal and transverse roughness is about 0.240 to about 0.350 and the range of values for Rz peak to valley is about 0.500 to about 0.900.
An airplane part comprised of 7000 series aluminum alloy wherein the longitudinal Ra value ranges from about 0.200 to about 0.400.
An airplane part comprised of 7000 series aluminum alloy wherein the transverse Ra value ranges from about 0.200 to about 0.400.
An airplane part comprised of 2000 series aluminum alloy wherein the longitudinal Ra value ranges from about 0.200 to about 0.400.
An airplane part comprised of 2000 series aluminum alloy wherein the transverse Ra value ranges from about 0.200 to about 0.400.
An airplane part comprised of 7000 series aluminum alloy wherein the longitudinal Ra value ranges from about 0.200 to about 0.400 and the transverse Ra ranges from about 0.200 to about 0.400.
An airplane part comprised of 2000 series aluminum alloy wherein the longitudinal Ra value ranges from about 0.200 to about 0.400 and the transverse Ra ranges from about 0.200 to about 0.400.
Dependencies are inferred from the claim text.