Making bursting discs
Making bursting discs
(OP)
Hi, I will make round plates which bursts when it reaches to a certain pressure(13kgf/cm2) and I am thinking the required processes at the moment.
Here is what I think.
There are two round(100mm diameter, 0.5mm thickness) plate(Stainless 316L) and I will make 50mm diameter dome(dome height: 10mm) in the center of those round plates.
The difference of those two plates is that the dome of one plate shall be formed by pressured air(10kgf/cm2 at 22℃) and the dome of the other plate shall be formed by pressurized hydraulic oil(10kgf/cm2 at 50℃). Which way will be more stable and the better way to form the dome of those plates?
Here is what I think.
There are two round(100mm diameter, 0.5mm thickness) plate(Stainless 316L) and I will make 50mm diameter dome(dome height: 10mm) in the center of those round plates.
The difference of those two plates is that the dome of one plate shall be formed by pressured air(10kgf/cm2 at 22℃) and the dome of the other plate shall be formed by pressurized hydraulic oil(10kgf/cm2 at 50℃). Which way will be more stable and the better way to form the dome of those plates?





RE: Making bursting discs
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Making bursting discs
RE: Making bursting discs
how will this dome limit the working pressure ?
a more tpical way would be introducing a stress concentration, like a sharp notch.
RE: Making bursting discs
RE: Making bursting discs
structural fuzes are tricky things to build ... typically build a sharp notch so the panel will fail when you want it to, But you need to check that it won't fail in-service particularly if there're repeated loadings ...
RE: Making bursting discs
RE: Making bursting discs
First thing I thought of was high speed wind tunnels, where they basically scribe an X or similar in the plate as I recall.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Making bursting discs
From interivewing with a couple of rupture disc companies in the past I know that there is a fair amount of art involved, including the "proving" of a disc or panel by test, before making a run of them.
I doubt a novice would get very close the first few times.
Regards,
Mike
RE: Making bursting discs
There are (probably patented) burst disc designs that use a mechanical (think diaprhagm and pop-thru belleville spring) trigger element to provide a "snap" action at a specified pressure, said snap action driving a punch thru the disk to give a positive burst at a very narrow range of very low pressures. Used for vacuum conveying systems that unload railroad grain or powder-carrying hopper cars.
RE: Making bursting discs
Regards,
Mike
RE: Making bursting discs
RE: Making bursting discs
Get in touch with the people at Fike. You may find this link useful:
http://www.fike.com/products/rupturediscs.asp
RE: Making bursting discs
If your process will allow it an explosion vent will be cheaper than a RD of any type.
The link to Fike is good place to start. You might checkout BS&B
http://ww