Friction elements and methods of their manufacture
Abstract
Abstract A METHOD OF MANUFACTURING FRICTION MATERIALS AND/OR ELEMENTS BY FELTING A SLURRY CONTAINING 70-100 PERCENT ASBESTOS FIBERS AND 0-30 PERCENT (BASED ON DRY INGREDIENTS) OF A FRICTION MODIFIER SUCH AS BARYTES, CASHEW NUT SHELL RESIN GRANULES OR OTHER NON-CELLULOSIC FIBERS. A SLURRY IS MADE BY MIXING THE DRY INGREDIENTS WITH PHENOLIC, VARNISH-TYPE RESIN DISSOLVED IN A SUITABLE SOLVENT. THE AMOUNT OF RESIN IN THE SOLUTION IS ADJUSTED TO ASSURE THAT THE FINAL MATERIAL HAS A RESIN CONTENT OF 15-35 PERCENT. THE SOLVENT IS EVAPORATED FROM THE FELTED MATERIAL BY DRYING AND THEN THE RESIN IS SET BY HEATING AT A HIGHER TEMPERATURE. METHODS OF FORMING COATED FRICTION ELEMENTS ARE ALSO DESCRIBED.
Inventors
- 👤 Clarence E Albertson
- 👤 Howard S Okubo
Bibliographic Details
Claims Analysis
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