Phosphate film processing method and phosphate film processing device
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United States of America Patent
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Oct 23, 2007
Grant Date -
Jul 8, 2004
app pub date -
Mar 26, 2002
filing date -
Mar 27, 2001
priority date (Note) -
Expired
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Abstract
A phosphate coating apparatus for depositing a phosphate coating on a metal material by electrolyzing the metal material in a predetermined electrolysis solution includes a positive electrode and a negative electrode, of which one electrode being disposed in contact with the metal material and the other electrode being disposed away from the metal material with a predetermined distance, and the other electrode being formed into a tubular shape so as to cover the entire length of the metal material.
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