Apparatus for electropolishing of helix used for a microwave tube
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United States of America Patent
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Oct 26, 1999
Grant Date -
N/A
app pub date -
Jan 12, 1998
filing date -
Jan 16, 1997
priority date (Note) -
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Abstract
An apparatus for electopolishing a helix used for a traveling wave tube has the following structure. A bath is provided which receives an electrolyte solution for etching the helix. A holder is further provided for holding the helix in the electrolyte solution without any displacement or any vibration, wherein a part of the helix is electrically connected to an anode. A controller mechanically supporting a cathode is provided for moving the cathode around the helix at substantially a constant speed in a direction substantially parallel to a longitudinal direction of the helix so as to keep a distance of the cathode from the helix to be substantially constant.
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