Abstract: Method for cleaning or decoring a casting, wherein that, separately or in combination: the said casting may be excited by an ultrasonic source of vibration, to allow residual material in contact with the walls of the said casting to become detached, this casting resting on a number of anvils placed on vibrating means supporting the casting and in contact with a number of sonotrodes, the said casting may be beaten at a very low frequency so as to cause large-sized internal residue such as a sand-based core insert to crack up, vibrating means may be used to impart a low-frequency linear vibration to this casting so as to break up and fluidize the cracked bits, the material issuing forth from the said casting may be extracted using a stream of fluid.

Abstract: A method of cleaning a metal part such as a casting, wherein the part to be treated is placed on a support plate inside a container full of fluid, and at least one vibration generator is positioned in contact with the part. Generators are used to excite one natural mode of vibration of the part, causing the fluid inside the part to cavitate. The vibration generators in contact with the part operate with a running cycle for the vibration sources which is optimized by managing the state of the sources.