MANDREL WITH TRANSITION SECTION FOR MAKING MULTIPLE CMC ARTICLES
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United States of America Patent
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Issued Date -
May 2, 2024
app pub date -
Oct 31, 2022
filing date -
Oct 31, 2022
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Abstract
A method includes providing a continuous mandrel body disposed along an axis. The mandrel body defines, in order along the axis from a first end thereof, a pilot lead-in section, a first article section, a tapered transition section, and a second article section. Beginning at the pilot lead-in section, a continuous fabric sleeve is progressively formed on the mandrel body to the first article section, to the tapered transition section, and then to the second article section to form a fabric-covered mandrel. The portions of the continuous fabric sleeve that are on the first article section and the second article section form, respectively, a first article preform and a second article preform. The fabric-covered mandrel is then divided to separate the article preforms, followed by densifying the article preforms with a ceramic matrix material to thereby form CMC articles.
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