Ultrahigh pressure apparatus

Details Ultrahigh pressure apparatus Ultrahigh pressure apparatus

B - Operations, Transporting

21

J

78/29

B21J 5/02 (2006.01)

Patent

CA 1049299

ABSTRACT OF THE DISCLOSURE An ultrahigh pressure apparatus having a pair of opposed frustoconical punches, an annular steel die disposed between said punches and having a stepped cylindrical aperture coaxially aligned with the punches, a hollow cylinder of rigid material having a small compressibility coefficient located in the die cylinder aperture, and a pair of gaskets, larger in outer diameter than the hollow cylinder, mating with stepped outer portion of the die cylindrical aperture wall. Preferably the steel die is of die steel or high speed steel; the punches are of a sintered WC-Co alloy; the hollow cylinder is of pore-free sintered alumina; and the gaskets are of a sintered aggalmatoric stone. Advantages of the structure over conventional dies include improved yields per run and faster reformation following plastic deformation through use.

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