The test bench, in which it is possible to produce the pressures of extremely test castings in the hollow body, in fractions of seconds

摘要

P the invention relates to the tests of the materials and in particular to tests. / p & & p & this test bench, makes it possible to produce in the hollow body of a capacity of about 1 to 10 cubic decimeters pressures of the castings with the aid of a liquid medium which can be compressed to the inside of the hollow body and which possesses a compressibility which may be up to 1% to 1000 bars of pressure. This device, which comprises a piston rod 15 operated by cams 10, 11 entrained by an inertia wheel 7, makes it possible to produce in approximately 50ms extreme pressures of the order of magnitude of 10000 bar. / p & & p & main applications: test of the pressure inside the hollow body or external pressure (elements placed in the hollow body). / p