Magnets being destroyed
Magnets being destroyed
(OP)
Hi,
I work with Hydraulics and we're having problems with a magnet on the piston.
The magnet is being destroyed, probably because we're using 350 bar pressure and the piston stops instantly, the pressure destroys the magnet. Magnet measurements: Ø24/Ø10 x4 mm.
Pictures: http://imgur.com/ChYsKDE,ZKmubgB
Do you guys have any suggestions what to do? Is it possible to get magnets in a more "robust" material, something that does not break upon impact?

Regards,
Kenneth
I work with Hydraulics and we're having problems with a magnet on the piston.
The magnet is being destroyed, probably because we're using 350 bar pressure and the piston stops instantly, the pressure destroys the magnet. Magnet measurements: Ø24/Ø10 x4 mm.
Pictures: http://imgur.com/ChYsKDE,ZKmubgB
Do you guys have any suggestions what to do? Is it possible to get magnets in a more "robust" material, something that does not break upon impact?

Regards,
Kenneth





RE: Magnets being destroyed
The best solution is to protect/isolate the magnet from the pressure.
RE: Magnets being destroyed
RE: Magnets being destroyed
Magnets are not suitable structural materials.
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Plymouth Tube
RE: Magnets being destroyed
Assuming it is cylinder location you are interested in and not something else. Different cat.
Regards
StoneCold
RE: Magnets being destroyed
Please clarify your picture. It is not clear what part of the image displayed is the magnet.
RE: Magnets being destroyed
www.KilroyWasHere<dot>com
RE: Magnets being destroyed
RE: Magnets being destroyed
The wetted parts are likely austenetic stainless and only weakly magnetic, but the greatest concern appears to involve elastomer seal failure.
Perhaps the OP might consider reposting his question in the valve forum or the one dealing with mechanical seals or better yet contact the manufacturer.
RE: Magnets being destroyed
If that is correct, KPHYDRA, do you think it is the pressure or the sudden stop (repeatedly I assume) that is causeing the magnet to impact the flanges on each side as the piston fires one direction or the other?
Not sure how this piston/magnet is assembled but if it is a multiple piece assembly, would it be possible the place a wave washer on each side of the magnet to give it some cushion when coming to an abrupt stop ???
david
RE: Magnets being destroyed
I have to say that I've never seen magnets included in the wetted parts of any valve design, and am curious as to how a permanent magnetic on a valve stem would benefit the operation of the valve.