OldTools Archive

Recent Bios FAQ

64253 John Ruth <johnrruth@h...> 1999‑06‑21 Hydrogen Embrittlement After Electrolysis
Gentle Galoots:

As part of a very informative message regarding the metallurgy of saws,
George Langford wrote the following which really raised the hairs of terror
on the back of my neck:  {And knuckles. ;^)}

>Galoots whose saws become brittle after electrolysis
>can prevent that by baking the saws around 300 F for
>several hours immediately after the electrolysis to
>drive off the hydrogen that causes the embrittlement
>(actually, delayed cracking due to residual stress).

This has set me to wondering if there are other tool items besides saws
which need to be thus protected from Hydrogen embrittlement after
electrolysis.

Since numerous galoots use electrolysis, this must be of great interest to
the list.  We all want to conserve and restore old tools, not ruin them!

Perhaps this Hydrogen bake-out step should be added to the electrolysis
instructions posted on various galoot sites. At least as far as saws are
concerned.

John R. Ruth
Woodbridge, NJ
Who hopes he hasn't embrittled any tools by electrolysing them.

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Recent Bios FAQ