Alan,
Magnaflux is a non destructive inspection which inspect ferrous (magnetic)
parts for cracks. It is done by magnetizing the part and introducing
particles which are attracted to the magnetism. Since magnets have a south
and north pole, any crack will cause a void and will show up as a cluster of
magnetic particles along the poles. This makes small cracks easy to detect
visually. Obviously, it will only work on parts that can be magnetized so
it will work on steel fans, but not aluminum fans. It is typically used on
engine blocks and heads which are iron. If a crack is found the repair
process is a separate issue and is particular to the part. Some can be
welded, some thrown out - just depends on the part and the repair process
available.
Hope this helps.
Pete
-----Original Message-----
From: owner-healeys@autox.team.net
[mailto:owner-healeys@autox.team.net]On Behalf Of Alan F Cross
Sent: Monday, October 03, 2005 6:47 PM
To: healeys@autox.team.net
Subject: Can someone explain 'magnaflux'?
I've been to the Magnaflux web site, which has told me that that
Magnaflux is an analysis method for defects in metals, not a defect
'fixer' (which is what I once thought it was).
But what do you guys do (or have done) when you 'magnaflux' things like
fan blades? Is this a DIY (dye) test, or do you send the components away
to be magnetised, etc?
Supplementary question ... if Magnaflux finds a problem with fan blades,
what do you do about it? Dump them, strengthen them, or something else?
Hoping to be wiser on this shortly! Now I've got my fan blades out, and
cleaned of paint, I'd like to 'do the right thing' before I repaint
them.
TIA
Regards
--
Alan F Cross (BJ8 "Ginny")
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