Method for shaping filament reinforced annular objects

Details Method for shaping filament reinforced annular objects Method for shaping filament reinforced annular objects

C - Chemistry, Metallurgy

21

D

148/30

C21D 7/13 (2006.01) B23P 6/00 (2006.01) C21D 1/02 (2006.01) C21D 8/00 (2006.01) C22F 1/00 (2006.01)

Patent

CA 2034346

RD-19,851 METHOD FOR SHAPING FILAMENT REINFORCED ANNULAR OBJECTS ABSTRACT OF THE DISCLOSURE A method for controlling the dimension of a reinforced metal matrix composite structure is taught. The structure is annular and the control and dimension is to render the structure truly or fully round where the initial structure is out-of-round. The cure of the out-of-round condition is accomplished by forming a solid mandril very slightly smaller in dimensions than the final dimensions sought for the structure. The out-of-round composite ring is forced onto the mandril and heated to the relaxation temperature of the matrix. Because the mandril has a higher thermal coefficient of expansion than the matrix, the method is effective in curing the out-of-round defects and rendering the composite ring truly round to within 0.003 inches.

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