>There are two main types of "regular" pop rivets: one is all aluminum and
>the other is aluminum with a steel mandrel (the part the gun pulls on and
>eventually goes "pop"). They both have about the same strength but the
>steel mandrel version grips a lot better as it gets compressed more because
>of the additional tension that is required by the gun to break the mandrel.
>The down side of the steel version is that if you ever have to drill it out,
>it is much harder to drill out than the aluminum mandrel version.
>The aircraft industry has historically used a "superior" pop rivet called a
>Cherry rivet (probably a trade name). However, airplanes (especially ultra-
>lights) also use "regular" pop rivets.
>Regular two-sided aircraft rivets are installed using a technique called
>"bucking". It requires a pneumatic riveting hammer on one side and a bucking
>bar on the other side of the rivet. In other words, you have to have access
>to both sides of the rivet, not just one side as in pop rivets.
You can also use a rivet squeezer. There are also mechanical lock rivets,
When installed correctly, they will have the strength of regular rivets or
bolts and they can be used in structural applications on aircraft. Names to
look for are Hi-Lock and Huck. All rivets of this type including Cherry
are called special rivets in airplane lingo.
************================================************
Richard Neill Dabney
Programming Specialist
GM/DOE Fuel Cell Project Los Alamos National Laboratory
TA-46,WA-128, MS/J-588 Los Alamos, NM 87545
(505)-667-6086 Fax (505) 665-6173
|