wet installation-fasteners
wet installation-fasteners
(OP)
HI,
what is meant by 'WET' installation of fasteners?.
thanks,
what is meant by 'WET' installation of fasteners?.
thanks,
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
wet installation-fasteners
|
RE: wet installation-fasteners
RE: wet installation-fasteners
Mike Halloran
Pembroke Pines, FL, USA
RE: wet installation-fasteners
RE: wet installation-fasteners
what is your application for wet instl? There are a number of different methods, and some require specific (callout) instructions.
Wes C.
------------------------------
Light travels faster than sound. That's why some people appear bright until you hear them speak.
RE: wet installation-fasteners
Stache
RE: wet installation-fasteners
For sealing, especially important if dissimilar metals or metal + composite is involved.
For more information, see MIL-STD-7179, FINISHES, COATINGS, AND SEALANTS, FOR THE PROTECTION OF AEROSPACE WEAPONS SYSTEMS.
http:/
Also, MIL-STD-889 Dissimilar Metals.
These, and all the Federal & MIL documents referenced within, can be downloaded from ASSIST. Just enter the bare number without the prefixes or any suffixes, in the Document Number box. This will also give the QPL (Qualified Products List when finding materials specifications. E.g., 23377 gives both the specification MIL-PRF-23377J(1) PRIMER COATINGS: EPOXY, HIGH-SOLIDS & QPL-23377-19.
http://assist.daps.dla.mil/quicksearch/
RE: wet installation-fasteners
As a DER if I ever have to replace a standard solid AD rivet with a CherryMax I always insist on "wet" installation with a two-part structural epoxy ie Hysol/Loctite EA 9309 or equiv. Even more important is that the components are squeeky clean or the epoxy is just along for the ride.
The epoxy does two things, helps protect from dissimilar metal problems but more importantly since these mechanically pulled rivets do not expand in their diameter like the AD does, it locks them in place and you have less "smoking" rivets later and they do not spin if and when the next guy has to remove them.
JQC
RE: wet installation-fasteners
What do you do about fatigue if you replace an AD with a blind?