ULTRAHIGH PRESSURE DEVICE Russian patent published in 1994 - IPC

FIELD: metal working. SUBSTANCE: device has coaxially mounted punches 1 secured by support rings and provided with central working cylindrical-conical inserts 2 made of superhard material and seated in central sockets 3. Inserts protrude over flat end faces of bearing parts 4 of punches 1. Sockets 3 have chamfer 8, which form together with conical surface 9 of insert 2 annular groove accommodating gasket 10 made of high-strength plastic material. In the process of device operation high pressure forces gasket 10 into annular groove between punch 1 and insert 2 and is partially into clearance between cylindrical part of insert 2 and socket 3. EFFECT: effective support of inserts and capability to stand up to two times more pressure increase cycles as compared with prior art. 2 cl, 1 dwg