The purposes of applying electrolytic polishing to files instead of "Sand-blast" process are as follows; (1) forming a white-gray and semi-bright surface to meet the consumers' taste, (2) prevention of lowering sharpness.
While forming of white gray and semi-bright surface by electrolytic polishing process has been the principal difficulties.
This report states about the following items.
(1) Suitable electrolytic solution for files is the solution consisting of H
2SO
4-HCl-H
2O-oxy carbon acid (I wish to name this added component "Special sub-component") under D. C.
(2) Study of characteristics of this electrolytic polishing, which are very special as shown in the voltage-current diagram of the above standard solution, and may be called "Special electrolytic polishing",
(3) Increasing of sharpness and changing of appearance.
(4) Design, trial manufacture and experiment of a special iig suited for mass production experiment.
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