Apparatus for generating shock waves by means of a supersonic pr

Details Apparatus for generating shock waves by means of a supersonic pr Apparatus for generating shock waves by means of a supersonic pr

1973-10-05

1977-09-20

Bentley, Stephen C.

Plastic article or earthenware shaping or treating: apparatus

Ultra high pressure generating device

72 56, 124 60, 425406, B01J 306

Patent

active

040493679

ABSTRACT:
An apparatus for generating shock waves by means of a supersonic projectile to effect, for example, phase transformation of a substance. A hammer in a cylinder is accelerated by introduction of compressed air into the cylinder, whereby a plunger formed integrally with the hammer at one end thereof is thrust into a hydraulic pressure chamber filled with a liquid and disposed coaxially with the cylinder. Thereupon, a high hydraulic pressure is generated in a hydraulic pressure chamber, and this hydraulic pressure accelerates a piston in a piston chamber connected with the hydraulic pressure chamber. The piston in turn compresses a light gas adiabatically to a high pressure, and a projectile fitted at one end of a barrel is thrust forward under the force of this high-pressure gas. The projectile is accelerated in the barrel and impacted onto a workpiece placed at the other end of the barrel at a speed higher than the sound velocity in the workpiece, whereby shock waves are produced in the workpiece and the workpiece is compressed under a superhigh pressure and at a high temperature to undergo the desired transformation.

REFERENCES:
patent: 2882796 (1959-04-01), Clark et al.
patent: 3204527 (1965-09-01), Godfrey et al.
patent: 3238019 (1966-03-01), DeCarli
patent: 3311020 (1967-03-01), Pialesi et al.
patent: 3343400 (1967-09-01), Rogers et al.
patent: 3412554 (1968-11-01), Voitsekhousky et al.
patent: 3494160 (1970-02-01), Tominaga et al.

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