Hydraulic tonnage pressure to punch a hole through a hot rolled plate
Hydraulic tonnage pressure to punch a hole through a hot rolled plate
(OP)
Typically not a question from me. But my client wanted an answer for this, I hope I have given all the details necessary.
How much hydraulic tonnage of pressure is required to punch a 2-1/2" whole through .375" hot rolled steel plate.
How much hydraulic tonnage of pressure is required to punch a 2-1/2" whole through .375" hot rolled steel plate.
Learn the rules,so you know how to break them properly.
Dalai Lama
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RE: Hydraulic tonnage pressure to punch a hole through a hot rolled plate
The punching force can be obtained from the following formula:-
F = ultimate shear stress of material * shearing area
the shearing area in the case you have posted would be:-
2.5" * pi * .375"
desertfox
RE: Hydraulic tonnage pressure to punch a hole through a hot rolled plate
Learn the rules,so you know how to break them properly.
Dalai Lama
_____________________________________
RE: Hydraulic tonnage pressure to punch a hole through a hot rolled plate
I would use 70% of the UTS it would give you a larger tonnage than using 50% and give you some margin, you don't want the press to be to weak to punch the disc.
If your working with hot rolled plate to european standards here is a site that gives strength values:-
htt
desertfox
RE: Hydraulic tonnage pressure to punch a hole through a hot rolled plate
Learn the rules,so you know how to break them properly.
Dalai Lama
_____________________________________
RE: Hydraulic tonnage pressure to punch a hole through a hot rolled plate
desertfox
RE: Hydraulic tonnage pressure to punch a hole through a hot rolled plate
It is the circumference of the hole or slot that you must use, times the thickness of the plate being punched.
(If you ever have to specify eqpt to use in the field to punch plate, the throat depth of the punch is critical also: The deeper the throat, the more rigid (more expensive!!) and heavier the machine must become.)
RE: Hydraulic tonnage pressure to punch a hole through a hot rolled plate
I covered the shear area in my first post ie:-
"The punching force can be obtained from the following formula:-F = ultimate shear stress of material * shearing areathe shearing area in the case you have posted would be:-2.5" * pi * .375""
RE: Hydraulic tonnage pressure to punch a hole through a hot rolled plate