Brush seal bristle cutting method
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United States of America Patent
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-
Sep 17, 1996
Grant Date -
N/A
app pub date -
May 11, 1994
filing date -
May 11, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for cutting the bristles which form the sealing ends of a brush seal, in which the tightly packed bristles are infiltrated with a liquid binder which is then hardened to form a rigid composite of bristles and binder. The resulting rigid composite can then easily be machined (cut or ground) without damage to the bristles. For metallic bristles, conventional fine line cutting methods such as single point turning or milling, are employed. Ceramic bristles, are machined by conventional bore grinding. After machining, the binder material may be immediately removed by melting or dissolution. Alternatively, the binder may be left on the bristles to provide protection during subsequent machining or handling procedures. The method provides accurate, smooth cuts while offering a combination of low cost and high production rates.
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