Process for eliminating pits during chemical milling

Details Process for eliminating pits during chemical milling Process for eliminating pits during chemical milling

1990-08-31

1992-06-30

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156634, 1566611, 156665, 156668, B44C 122, C23F 102, B29C 3700

Patent

active

051260050

ABSTRACT:
A process for chemically milling an airplane skin having inside and outside surfaces, comprising the steps of applying a maskant layer to both the inside and outside surfaces of the skin, adhering a layer of plastic film on top of the maskant layers, selectively removing the plastic film and maskant from areas of the inside surface where chemical milling is desired, immersing the skin in a chemical bath for etching the areas of the inside surface not covered by the plastic film and maskant, and removing the plastic film and maskant from both the inside and outside surfaces.

REFERENCES:
patent: 3317320 (1967-05-01), Reber
patent: 3506441 (1970-04-01), Gottfried
patent: 4053351 (1977-10-01), DeForest et al.
patent: 4113549 (1978-09-01), Brimm
patent: 4137118 (1979-01-01), Brimm
patent: 4284468 (1981-08-01), Stearns
patent: 4588474 (1986-05-01), Gross
patent: 4662984 (1987-05-01), Ohtake et al.
patent: 4689114 (1987-08-01), Ohtake et al.

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