Electrolytes
The electrolyte or marking solution required depends on the
alloy of material to be marked or etched. There are general
purpose electrolytes for most products. For specific applications,
however, it is best to send samples of the part to be marked
to the manufacturer for his recommendations. Selection of
the proper electrolyte is very important. Using an incorrect
electrolyte can produce a mark with an unstable oxide—which
can be rubbed off after the mark is made. Most electrolytes
cause an excess of oxides and thus clog the stencils, giving
poor marks and short stencil life. Therefore, on production
runs particularly, it is imperative to use the self-cleaning
electrolytes which stop stencil clogging by controlling the
amount of oxides created. These self-cleaning electrolytes
are identified with "SC" in the part number. In
most parts books, there is a list of the more popular electrolytes.
These electrolytes do about ninety percent of the jobs. However,
there are more than one hundred electrolytes available and
no list can be complete, nor should any list be considered
as the final word. |
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