Anybody know how much pressure it takes to squeeze and properly form a 3/16 steel rivet? I can hammer them in with a rivet gun but I have a bunch of them that I need to do. I think it might be faster and easier to squeeze them. I'm thinking I could build or adapt some type of c frame press. Just need to know how much pressure it will need have. Would 5 ton press be up to the job?
are they button head or counter sunk? 5 tons should be more than plenty. I have used many pneumatic squeezers before that im sure had far less than that if you decide to rivet them in make sure you hit them hard and fast because they work harden quick. also the heavier the bucking bar the better.
They are button head. Do they have to be hit hard and fast as in done in one quick blow or can they be squeezed like by a hydraulic cylinder? I don't see why they couldn't be rivet squeezers squeeze slowly dont they? Hammers form them with multiple blows.
All rivet squeezers I've used have a mechanical setting for the ram, where the distance it moves is adjusted. If you're going to re-invent the tool, when you rig it up, think about adjusting the ram travel to obtain uniform upset. A good hand operated squeeze is less expensive than a pneumatic one.
I think I understand what you mean, what about a pressure gauge and squeezing to the same pressure setting each time? I'm not trying to re invent the wheel I need something with about 12 to 18 inches of throat depth. I was hoping I could buy some type of c frame hydraulic press that would be up the job and then be able to use it for punching holes and other jobs once the riveting is done. I was thinking something along the lines of one of the small mittler brothers presses or maybe a pexto kick press with a hydraulic cylinder on it. The mittler bros is 5 ton will that do 3/16 rivets Something like these
If your riveting a frame or something heavy gauge you could hot rivet it. I don't really know much about riveting but hot riveting has got to be faster, now I don't know if you need a special alloy rivet to do this. just a thought
It's not anything heavy duty just light guage material riveted to a 1/4 inch thick outer ring. Rivets are just 3/16 diameter but I'm going to be doing a bunch of them. I'm just looking for a faster and quieter way than hammering them in. I hate to hear an air hammer banging away for long periods of time I've not done much riveting so I'm not sure how much pressure it would take to form a 3/16 rivet. I'm sure there is a chart somewhere that tells the pressure required for different sizes but I can't find it.
Hey I actually did find a chart for pressures from 1958. its for hot riveting but it says it is roughly double for cold riveting. Should be aprox. 4 tons for a 3/16 rivet. here is the chart: http://www.anvilfire.com/21centbs/math/riveting_force.htm
Thanks for that! That's what I was talking about I just couldn't find it. Hopefully it's fairly accurate. I guess I'll try to rig something up ad see how it goes.
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