A method for cutting electrode foils (1) by means of a particle stream (2) is proposed. A cutting device (4) for cutting electrode foils (1) that are intended for use in a battery cell is also specified which comprises at least one nozzle (5) with an outlet (6), one cutting tool (7), one vibration device (8) for exciting at least the cutting tool (7) to vibration (14), one particle feed line (9) for supplying at least particles (13), and one gas feed line (10) for supplying a first gas stream (12), wherein the particles (13) and the first gas stream (12) can be mixed in the cutting device (4) to form a particle stream (2) and fed via the nozzle (5) to the outlet (6), wherein the cutting tool (7) and the outlet (6) can be arranged above the electrode foil (1) with separation (11) from a surface (3) of the electrode foil (1), and wherein the electrode foil (1) can be cut at least as a result of the particle stream (2) and the vibrations (14) of the cutting tool (7).

A method for cutting electrode foils and a device for cutting electrode foils that are intended for use in a battery cell are proposed. The cutting device

comprises a cutting tool, a vibration device for exciting at least the cutting tool to vibration, and a particle feed line for feeding at least particles. The cutting tool can be arranged above the electrode foil with a separation from a surface of the electrode foil, and the electrode foil can be cut at least as a result of the vibrations of the cutting tool that are transmitted to at least one particle.

A device for targeted repair of micro-nano damage of an inner ring of an aeroengine bearing by an electric-magnetic composite field includes a driving device, an ultrasonic shot peening device, a pulsed current generator and a magnet yoke-coil device. The driving device includes a motor and a rotating shaft. The motor drives the rotating shaft to drive a bearing inner ring to synchronously rotate. The ultrasonic shot peening device includes an ultrasonic shot peening cavity, an ultrasonic probe and steel balls, the ultrasonic probe extends into the cavity from an opening in a lower end of the cavity, and the steel balls are placed on the ultrasonic probe. An opening in an upper end of the cavity is placed below the bearing inner ring. The pulsed current generator generates pulsed current on the bearing inner ring. The magnet yoke-coil device can excite a magnetic field around the bearing inner ring.

A device for targeted repair of micro-nano damage of an inner ring of an aeroengine bearing by an electric-magnetic composite field includes a driving device, an ultrasonic shot peening device, a pulsed current generator and a magnet yoke-coil device. The driving device includes a motor and a rotating shaft. The motor drives the rotating shaft to drive a bearing inner ring to synchronously rotate. The ultrasonic shot peening device includes an ultrasonic shot peening cavity, an ultrasonic probe and steel balls, the ultrasonic probe extends into the cavity from an opening in a lower end of the cavity, and the steel balls are placed on the ultrasonic probe. An opening in an upper end of the cavity is placed below the bearing inner ring. The pulsed current generator generates pulsed current on the bearing inner ring. The magnet yoke-coil device can excite a magnetic field around the bearing inner ring.

According to an aspect of the disclosure, there may be provided a peening apparatus for generating a compressive residual stress on a pipe member including at least one curved round portion and having a hollow inside formed therein in which a first fluid and a second fluid, which is in a gas phase, are accommodated, the apparatus including: a probe which is disposed such that it is submerged in the first fluid supplied to the hollow inside, and which is configured to apply a wave to the first fluid, wherein the first fluid and the second fluid have different acoustic impedances, so that the wave is totally reflected on a reflection surface where the first fluid and the second fluid are in contact, and forms a standing wave, and wherein a cavity generated and grown by the formed standing wave is exploded and emits a shock wave or microjet, which generates a compressive residual stress on the inner surface of the pipe member surrounding the hollow inside.

The present invention discloses a multi-dimensional vibration grinding cavity body. By adjusting amplitudes (power) and frequencies of the multi-dimensional ultrasonic vibration source, such that the multi-directional macroscopic flow is formed in the cavity body while keeping the vibration medium to have the original characteristics to improve the performance of grinding of slurry.

A method of treatment of a cutting piece (2) is provided. This method includes a first step in which a cutting surface (5) of this cutting piece (2) is subjected to shots thrown by an ultrasonic shot peening apparatus (10) to become a cutting surface (5) with shot impacts, and a second step in which the cutting surface (5) with shot impacts is grinded over a chosen thickness to become a treated cutting surface (5).

A method for vibroblasting surfaces using a vibroblasting machine, said vibroblasting machine being equipped with at least one toroidal shaped process vat (50) which is set in a rotary motion and is suitable for containing workpieces whose surfaces are subjected to a vibroblasting processing, said method including a phase of inputting fine particles belonging to a sandblasting media into said process vat (50) to proceed with a sandblasting action of the surfaces of the workpieces being processed, and a phase of evacuation of said fine particles, characterized in that the phase of inputting fine particles belonging to the sandblasting media into said process vat (50) occurs from top to bottom or tangentially to the circumference of said process vat (50) and to the surface of the vibrating mass (75) of the workpieces and of the media.

A method of smoothing an inner surface of a tubular wall of a workpiece is disclosed, including immersing the workpiece in a mixture of a liquid and an abrasive and inserting a cavitation peening nozzle into a cavity of the workpiece. The method further includes injecting a cavitating jet from the cavitation peening nozzle into the cavity.

A method for cleaning an object includes steps of delivering a cleaning medium to a surface of the object, delivering ultrasonic waves to the object to atomize the cleaning medium, and applying a vacuum airflow to collect atomized cleaning medium.