In addition to the process that Larry described there is or was another
process called Zyglo.
With the Zyglo process the penetrant was introduced to the surface where
the crack was suspected and then the surface cleaned. The penetrant would
remain in the crack if any and a black light was used to determine if there
was a crack with penetrant in it. Penetrant in a crack would glow.
Stan
=======
At 01:13 PM 2/25/03 EST, SRAPL311@aol.com wrote:
>Penetrant dye checking is used for aluminum because magnafluxing will only
>work on ferrous metals. You can do the check yourself using a special kit.
>Clean the surface, apply the dye, wipe the dye from the surface, apply the
>developer and the dye in any cracks will show. I haven't done this in a long
>time and do not remember where I bought the kit - but it does work well.
>Larry
/// datsun-roadsters@autox.team.net mailing list
/// Archives at http://www.team.net/archive
|