Best compound to join tube and insert
Best compound to join tube and insert
(OP)
I have a tube with a 0.300" hole through the center. I need a compound that will allow a user to assemble an insert into the tube via a slip fit, but when cured will not come apart. I have tired various loctite compounds (272, sleeve retian compound), but the inserts come loose during usage. The compound will not see any shear forces due to axial loading of the tube, but will see heat (max 270F), vibration, and some twisting force (amount unkown, but not high).
Dan
Dan





RE: Best compound to join tube and insert
What was the failure of the Loctite material?
Ray Reynolds
"Computers in the future may weigh no more than 1.5 tons."
Popular Mechanics, forecasting the relentless march of science, 1949
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?
RE: Best compound to join tube and insert
RE: Best compound to join tube and insert
You might want to investigate Loctite 648, good for temperatures up to 300°F. Fills gaps up to 0.006" diameter clearance. Fixtures in 5 minutes.
Do some research on www.loctite.com if you are set on using their products.
Ray Reynolds
"Computers in the future may weigh no more than 1.5 tons."
Popular Mechanics, forecasting the relentless march of science, 1949
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?
RE: Best compound to join tube and insert
Dan
RE: Best compound to join tube and insert
Their thread locker is good to 2100F [the only problem is you can't use a torch to soften it
RE: Best compound to join tube and insert
www.masterbond.com
http://www.dymax.com/
This is a material that you can get locally.
http://www.systemthree.com/p_metlweld.asp
RE: Best compound to join tube and insert
RE: Best compound to join tube and insert
Is there a reason that this must be an epoxy? Is solder or braze an option?
Griffy
RE: Best compound to join tube and insert
I am mainly looking for a procedure that can be done in a few minutes on a bench top. The reason I have stayed away from solder and brazing is the time and equipment needed to do this. It is my understanding it would take an oven of some sort to heat the parts and braze the parts together (furnace braze?). I need a procedure that will allow the user to find the correct insert and assemble the parts relatively quick.
RE: Best compound to join tube and insert
Have you considered a press fit instead of bonding, coefficient of linear expansion would be the same for both parts therefore no loosing with temperature. However without knowing any of the forces the components see in service it would appear to be difficult to reccomend either an adhesive or an actual imterference without testing them.
regards desertfox