Abrading – Abrading process – Utilizing fluent abradant
Patent
1992-11-16
1994-12-06
Brown, David
Abrading
Abrading process
Utilizing fluent abradant
239597, 451102, B24C 504
Patent
active
H00013790
ABSTRACT:
A supersonic fan nozzle for abrasive blast removal of coatings particularly for use with plastic abrasive media, provides much greater media particle velocity, a more uniform velocity profile, and a more uniform media particle distribution than prior art nozzles. The new nozzle has a constant height throat area about 1 inch long, about 1.57 inches wide, and about 0.125 inche high. The throat opens into a constant height diverging slot which diverges at about a 6.5 degree half-angle for about 9.5 inches to a final exit width of about 3.75 inches. A nozzle-to-hose coupling connects at one end to a conventionally sized blasting hose and at the other by a rectangular opening to the throat. Used with light plastic media entrained in an airflow stream at operating pressures of 15 to 80 psig, the nozzle has successfully removed coatings from a variety of delicate underlying substrates with little or no observable damage to the substrates. In tests, it has produced minimal residual stress effects on substrates while increasing production stripping rates by 50-200% . Tests have shown that the optimum range of dimensions for the new nozzle are a slot exit area to throat area ratio about 2.2 to about 2.5 and a constant divergence half-angle of about 5 to about 8 degrees.
REFERENCES:
patent: 2379432 (1945-07-01), Heany
patent: 2605596 (1952-08-01), Uhri
patent: 2900851 (1959-08-01), Rutledge
patent: 3398899 (1968-08-01), Fry
patent: 3561163 (1971-02-01), Arnold
patent: 3861598 (1975-01-01), Fleischer
patent: 4013486 (1977-03-01), Engel
patent: 4035870 (1977-07-01), Reba et al.
patent: 4169556 (1979-10-01), Muller
patent: 4237209 (1980-12-01), Oliver
patent: 4253610 (1981-03-01), Larkin
patent: 4272612 (1981-06-01), Oliver
patent: 4395850 (1983-08-01), Brown
patent: 4622714 (1986-11-01), Tomasillo
patent: 4631250 (1986-12-01), Hayashi
patent: 4633623 (1987-01-01), Spitz
patent: 4731125 (1988-03-01), Carr
patent: 4741130 (1988-05-01), Tano et al.
patent: 4813611 (1989-03-01), Fontana
patent: 4815241 (1989-03-01), Woodson
patent: 4843770 (1989-07-01), Crane et al.
patent: 5044129 (1991-09-01), Olevitch
patent: 5050805 (1991-09-01), Lloyd et al.
Brown David
Kundert Thomas L.
Sinder Fredric L.
The United States of America as represented by the Secretary of
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