Bonding of carbon-based components
AssigneeDunlop Limited
InventorsRonald Fisher, Thomas G. Fennell
Life of this patent
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Abstract
A carbon-carbon composite friction disc is formed from two or more carbon-based structural components secured together by an interface layer which is not itself a structural member but is fusion-bonded to both of the structural components to secure them together. The interface layer may be of metallic material such as a brazing compound, or may be of non-metallic material such as pitch.
Claims15
A carbon-carbon composite friction disc comprising two or more carbon-carbon composite structural components secured together by a non-structural interface layer of metallic brazing which is fusion-bonded to both of the carbon-carbon composite structural components by pressure and heat only within the brazing range of the brazing material.
A carbon-carbon composite friction disc comprising a sandwich of two carbon-carbon composite structural components, at least one of which is a worn or damaged brake friction disc upon which at least one face has been trued,
- said components being secured together face to face to form a replacement disc, said securing being only by means of a non-structural interface layer of metallic brazing material which is fusion-bonded to both of the structural components by pressure and heat only within the brazing range of the brazing material.
A method for manufacture of a carbon-carbon composite friction disc from worn parts comprising:
- machining the worn face of at least one used carbon-carbon composite friction disc to present at least one face surface for mating with another face surface of another carbon-carbon composite friction disc;
- applying a layer of high melting point metallic brazing compound between said faces of said friction discs;
- clamping the discs together in face-to-face relationship and
- heating the discs in a vacuum furnace to a temperature within the brazing range of said metallic brazing compound.
A method of bonding together two or more carbon-carbon composite structural components of a friction disc comprising applying a layer of high melting point brazing compound between the components, clamping the components together and heating the components in a suitable atmosphere to melt the brazing compound, cooling the components and removing the resulting composite disc from the clamping.
Dependencies are inferred from the claim text.