Permanant Metal to Metal adhesive Reccomendations
Permanant Metal to Metal adhesive Reccomendations
(OP)
I am working on a project wich will require two pieces of aluminum to be permanantly bonded with adhesive. The material will either be 6061 or 7075. Curently we are planning on using 1/32 inch roll pins for allignment and strenght once the adhesive has cured. This part will be subjected to moderate climate/environmental changes, and moderate shocks as well. The shock axis will be parallel to the glue line. I also need a long set up time, probably one or two hours, and the glue should be thin enough to penetrate small features. Does anyone have any suggestions or experience with this sort of problem? Thanks, MadEngineer13





RE: Permanant Metal to Metal adhesive Reccomendations
http://www.welding-advisers.com/
RE: Permanant Metal to Metal adhesive Reccomendations
Make sure you're talking to the apps guy not just the sales guy.
There are adhesives that cure by heat or even UV light (may not work in your app) that may help with the working time issue.
KENAT, probably the least qualified checker you'll ever meet...
RE: Permanant Metal to Metal adhesive Reccomendations
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
RE: Permanant Metal to Metal adhesive Reccomendations
Subjective terms like "moderate climate/environmental changes" and "moderate shocks" and "small features" are meaningless.
You also need to understand the difference between "open time" and "cure" or "set up" time, and be able to define your actual needs.
You may want to get yourself a copy of ASTM D6465 "Standard Guide for Selecting Aerospace and General Purpose Adhesives and Sealants", which provides an excellent overview of the things you - as the designer - need to think about when designing a bonded joint.
RE: Permanant Metal to Metal adhesive Reccomendations
Thanks for the help, and I will definately check with the references mentioned above.
RE: Permanant Metal to Metal adhesive Reccomendations
In my industry (Rail), we use a lot of structural adhesives, nameley Plexus and sometimes Sikaflex. I have a sample of an Aluminium lap joint bonded with Plexus sat on my desk, which everyone likes to give a good bending every visit. It must be 3 years old now and the aluminium is just staring to fracture but the bond is as good as day one
Its also good for sticking collegues boots to the floor (Sorry John!)
Anyway ther you go
RE: Permanant Metal to Metal adhesive Reccomendations
(I've broken and fixed a few things with that stuff)
RE: Permanant Metal to Metal adhesive Reccomendations
You can give either of these sources a call.
http://www.masterbond.com/
h
RE: Permanant Metal to Metal adhesive Reccomendations
RE: Permanant Metal to Metal adhesive Reccomendations
RE: Permanant Metal to Metal adhesive Reccomendations
B.E.
RE: Permanant Metal to Metal adhesive Reccomendations
We use 3M VHB, acrylic double sided tapes on metal to metal or composites, and provided the surfaces are properly cleaned they are great! However, you won't get a long set-up time, once they touch, that's it done. You need to ensure the parts are correctly positioned before they touch (your dowels would be good) and the design should take into account the thickness which can be up to a millimeter or so. The foam gives them almost total immunity from shock loading and seals well against moisture ingress.
Where the slight flexibility or the thicness of the tape is a problem we use Loctite, but I would be wary of shock loads and the limited assembly time.
Trevor Clarke. (R & D) Scientific Instruments.Somerset. UK
SW2007x64 SP3.0 Pentium P4 3.6Ghz, 4Gb Ram ATI FireGL V7100 Driver: 8.323.0.0
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RE: Permanant Metal to Metal adhesive Reccomendations
another choice is are you going to do the work yourself or sub it out ? in my business i've had experience with Fleet industries (in the US) and Fokker (in Europe).
IHMO, lose the chicken rivets on sheet-to-sheet bonding ... you might use them when bonding a stringer to a panel.
RE: Permanant Metal to Metal adhesive Reccomendations
http://www.lordfulfillment.com/upload/UI3000.pdf
Flores
RE: Permanant Metal to Metal adhesive Reccomendations
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: Permanant Metal to Metal adhesive Reccomendations
Hi.
Polyamide-imide (PAI) is an excellent choice for structural adhesive.
You'll find the compound has exceptional wetting characteristics (important for bonding), thermal stability and resistance to corrosion.
Good luck!
William Gunnar
http://www.IndustrialCoatingsWorld.com