A blasting system includes a pressure vessel, water pump, blast circuit, motor, orifice valve, and controller. The pressure vessel is configured to contain a pressurized blast media slurry. The water pump pumps water from a water supply to the pressure vessel. The blast circuit delivers the pressurized blast media slurry received from the pressure vessel. The motor drives the water pump. The orifice valve regulates a rate of flow of the blast media slurry to the blast circuit. The controller provides control commands to the water pump or the orifice valve based on a blast media flow rate set point and at least one sensed operating parameter.

An abrasive slurry delivery system configured to discharge a high pressure mixture of water (30) and abrasives (54, 54′) for further admixture with a flow of high pressure water (30) to generate an abrasive slurry and ultimately an abrasive slurry jet is provided. The delivery system includes a storage chamber (56), a discharge chamber (58) and a shuttle chamber (60) positioned therebetween. The shuttle chamber (60) is configured to intermittently receive abrasives (54) from the storage chamber (56) and intermittently supply the abrasives (54, 54′) mixed with high pressure water (30) to the discharge chamber (58) to be selectively discharged therefrom. High pressure abrasive slurry cutting systems and related methods are also provided.

A high pressure pump including a linear actuator having a servo motor to axially rotate a hollow rotor shaft in alternating directions, the servo motor having a stator positioned co-axially around the hollow rotor shaft with an interior of the rotor shaft being co-axially coupled to a drive member to convert axial rotation into reciprocal displacement, the drive member being constrained against linear movement and supporting a shaft. At least one piston is coupled to the shaft and the piston is arranged within a cylinder to define a pumping chamber, whereby alternating rotation of the rotor shaft causes reciprocal linear displacement of the piston to pressurize fluid in the pumping chamber. A drive mechanism includes a controller coupled to a servomotor and an encoder to measure movement of the hollow rotor or output shaft and send a feedback signal proportional to the movement to the controller.

A cavitation peening system is disclosed, including a tank containing a fluid, a carrier, and an array of cavitation nozzles. The carrier is configured to deliver a workpiece to a treatment zone in the tank, and the array of cavitation nozzles are collectively configured to generate a cavitation induced whirlpool in the treatment zone.

The invention is directed toward wet-abrasive blasting systems used for cleaning, preparing surfaces, removing coatings, and other abrasive blasting applications. The wet abrasive basting system has a blast pot that includes a venting system. The venting system may be a self-venting system that allows gases to be vented during charging and prevents gases from accumulating in the blast pot during operation. In wet abrasive blasting systems a slurry is conveyed via a piping system, hoses, etc. to a mixer connected to a source of pressurized gas where slurry and compressed air/gas are combined and directed through the blast hose and blast nozzle.

A device for irradiating a suspension on workpieces, the device including at least one pressure vessel for the suspension; at least one feed line for the suspension connected to the pressure vessel, the feed line is connected or can be connected to a radiation device; at least one valveswitched between the pressure vessel and the radiation device; at least one prechamber connected to the pressure vessel by a valve; at least one return line for the suspension, connected to the prechamber; and a line and a valve, by which the prechamber can be connected to a compressed air source or by which the prechamber is connected to a compressed air source. The valve between the prechamber and the pressure vessel is a check valve connected at its one upper, connection at a pressure vessel connection, which discharges into the pressure vessel through the bottom of the pressure vessel at the lowest point thereof, and which is connected at its other connection to the prechamber, wherein the flow direction of the check valve is directed toward the pressure vessel.

Multi-jet abrasive head for cleaning/removing material surfaces and splitting/cutting materials by a liquid beam enriched with solid abrasive particles with a uniform velocity and density profile allowing the cutting power to be increased with more efficient cutting beam usage.

A wet abrasive blasting system includes a vessel having multiple outlets for dispensing slurry. A first sprayer of the system is operatively associated with a first blast control switch, and a second sprayer is operatively associated with an n-th blast control switch. A first blast line fluidly connecting the first sprayer to the first outlet includes a first pinch valve, and an n-th blast line fluidly connecting the n-th sprayer to the n-th outlet includes an n-th pinch valve. A time delay module of the system transmits signals to close all system pinch valves upon receipt of signals indicative of an actuated state of more than one blast control switch and, after a predetermined time delay, transmits signals to open all system pinch valves associated with their respective actuated blast control switches.

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.

Provided is a wet blasting treatment device including a first nozzle unit that discharges, toward a target treatment region of a workpiece, slurry in which a first liquid and abrasive grains are mixed, a second nozzle unit that discharges a second liquid toward an untreated region adjacent to the target treatment region such that a liquid film is formed in the target treatment region of the workpiece, and a control unit that controls a discharge amount of the second liquid discharged by the second nozzle unit such that the liquid film has a predetermined thickness.