Airflow masking of carbon-carbon composites for application of antioxidants

Mask ( 10, 10', 21, 22 ) for use in coating a carbon-carbon composite brake disc ( 25 ) with anti-oxidant. The mask is composed of carbon-carbon composite material or nonreactive ceramic material. The mask is configured with edge ridges ( 11, 13 ) that are aligned with the outer and inner annul...

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Bibliographische Detailangaben
Hauptverfasser:	SIMPSON ALLEN H, SMITH RICHARD W, JOHNSON PHILLIP D, WRIGHT MARCIA A, COLE DAVID R
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BLASTING BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	Mask ( 10, 10', 21, 22 ) for use in coating a carbon-carbon composite brake disc ( 25 ) with anti-oxidant. The mask is composed of carbon-carbon composite material or nonreactive ceramic material. The mask is configured with edge ridges ( 11, 13 ) that are aligned with the outer and inner annular diameters of the carbon-carbon composite brake disc, a gasflow channel ( 12 ) between the ridges, and a gas access port ( 18 ) that allows gas to enter the gasflow channel. The mask may also include a gas exit port ( 16 ) having a valve ( 17 ) operatively connected thereto, so that gas flow may be restricted when pressure within the mask and carbon-carbon composite brake disc falls below a specified minimum value. Also, a method of avoiding application of liquid antioxidant material to a friction surface of a carbon-carbon composite brake disc, by: covering the friction surface with a mask configured to deliver compressed gas to the friction surface, and directing compressed gas across the friction surface and through pores in the carbon-carbon composite brake disc and/or in the mask while the masked brake disc is in the presence of the antioxidant material in a liquid state.