An improved rupture disk assembly and methods and apparatuses for forming a rupture disk are disclosed. The rupture disk assembly includes a rupture disk having a flange connected to a dome-shaped rupturable portion by a transition area. The rupturable portion includes a structural apex formation at or near the apex of the dome and is configured to rupture when exposed to a fluid having a predetermined pressure. Preferably, a safety member is disposed adjacent the rupture disk. The safety member includes a hinge about which the disk bends when the disk ruptures. The present invention is also directed to an apparatus and method for consistently, accurately, and repeatably forming a structural apex formation in a rupture disk before the formation of the rupture disk dome, during the formation of the rupture disk dome, and after the formation of the rupture disk dome.

Method and apparatus for forming a rupture disk

Manufacture of formed parts from sheet by using hydraulic medium under high pressure which exerts stresses similar to those caused by deep-drawing.

Forming of sheet by hydraulic means

A piece of sheet metal is put on a die, the rims being held down by a holder, and a punch is lowered onto the piece to commence the forming of a cylindrical section. Then the product is finally shaped by the pressure of a fluid which is fed into the gap between the punch and the sheet metal until it takes on a domed shape, during which action the edges of the piece of metal are diplaced towards the centre.

Plaksin Vladimir N

Papers

Stamping metal articles from sheet