An abrasive fluid jet cutting device is disclosed comprising a rotating joint that includes a first path for abrasive and a second path for fluid, a mixing chamber where the first and second paths meet, a first expanding volume arranged above the first path to accumulate abrasive, and a second expanding volume arranged below the first path to accumulate abrasive between the first volume and the mixing chamber, in which the second volume forms a barrier against the return flow of humidity along the first path.

An abrasive fluid jet cutting device is disclosed comprising a rotating joint that includes a first path for abrasive and a second path for fluid, a mixing chamber where the first and second paths meet, a first expanding volume arranged above the first path to accumulate abrasive, and a second expanding volume arranged below the first path to accumulate abrasive between the first volume and the mixing chamber, in which the second volume forms a barrier against the return flow of humidity along the first path.

A method for removal of residual matter includes delivering an ultra high-pressure fluid jet to an intermediate additively manufactured three-dimensional (3D) component to dislodge and remove at least a portion of the residual matter from an internal surface of the intermediate additively manufactured 3D component, or from an external surface of the intermediate additively manufactured 3D component, or both, to form a cleansed additively manufactured 3D component.

A surface treatment device includes a vacuum blast head, an air curtain-forming unit and an auxiliary air injection unit. The vacuum blast head includes an injection nozzle and a suction hole. The injection nozzle injects a polishing agent used for blast treatment on a surface of a material to be treated. The suction hole sucks up the injected polishing agent with suction air. The air curtain-forming unit injects air toward the surface of the material to be treated to form an air curtain that surrounds the injected polishing agent. The auxiliary air injection unit injects auxiliary air between the air curtain and the suction air toward the material to be treated at a lower pressure than the air that forms the air curtain.

A surface treatment device includes a vacuum blast head, an air curtain-forming unit and an auxiliary air injection unit. The vacuum blast head includes an injection nozzle and a suction hole. The injection nozzle injects a polishing agent used for blast treatment on a surface of a material to be treated. The suction hole sucks up the injected polishing agent with suction air. The air curtain-forming unit injects air toward the surface of the material to be treated to form an air curtain that surrounds the injected polishing agent. The auxiliary air injection unit injects auxiliary air between the air curtain and the suction air toward the material to be treated at a lower pressure than the air that forms the air curtain.

A waterjet system is provided, including a pump configured to pump fluid, an electric motor configured to drive the pump; a hopper configured to store abrasive, a mixing chamber configured to mix abrasive from the hopper and the fluid from the pump to produce a slurry, where the fluid entering the mixing chamber is at a pressure between 2000 psi and 8000 psi, a cutting bed configured to receive a workpiece to be cut, and a cutting head, including an outlet nozzle, in downstream fluid communication from the mixing chamber, the cutting head configured to expel the slurry through the outlet nozzle as a high-velocity jet into the cutting bed.

A translatable, ultra-high pressure liquid jet system includes a translatable frame configured to maintain mechanical contact with a rail. The liquid jet system includes a liquid jet processing head affixed to the frame and configured to maintain a distance from the rail and provide a liquid jet that contacts the rail. The liquid jet system also includes an ultra-high pressure liquid pump in fluid communication with the liquid jet processing head. The ultra-high pressure liquid pump is configured to supply pressurized liquid to the liquid jet processing head.

A method and system utilizing multi-sensor analysis and data point correlation is provided for predictive monitoring and maintenance of a pressurized fluid cutting system. In a disclosed aspect, multiple sensed characteristics of system operation are correlated to determine a particular failure mode. Identification of the failure mode through active sensor data analysis and correlation facilitates predictive maintenance, minimizes system downtime, and optimizes system output.

A method and system utilizing multi-sensor analysis and data point correlation is provided for predictive monitoring and maintenance of a pressurized fluid cutting system. In a disclosed aspect, multiple sensed characteristics of system operation are correlated to determine a particular failure mode. Identification of the failure mode through active sensor data analysis and correlation facilitates predictive maintenance, minimizes system downtime, and optimizes system output.

In an embodiment, a method of hardening a surface of a substrate comprises directing a waterjet having a transition flow region, the waterjet comprising water and particles, at a surface of a substrate such that the waterjet impacts the surface within the transition flow region to provide a layer of embedded particles underneath the surface of the substrate, thereby forming a hardened substrate. The hardened substrates are also provided.