Method and apparatus for joining metal pieces using induction heating
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United States of America Patent
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Apr 17, 2001
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N/A
app pub date -
Jul 12, 1999
filing date -
Dec 16, 1993
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Expired
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Abstract
Method and apparatus for joining metal pieces using induction heating. Metal pieces to be joined are placed end-to-end with a gap between them and induction heated in the thickness portion. To maximize speed and even heating edge-to-edge of the ends, members of a magnetic substance are provided in a gap between the inductor and the piece to be heated, thereby enhancing local heating effect by increasing magnetic flux density. Once heated, the ends are pressed together end-to-end for joining.
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