An automatic wet sanding apparatus is equipped with a suction unit having a suction nozzle that is located under an automatic wet sanding unit in a state where automatic wet sanding is performed and a suction device that generates a suction force for suctioning water through the suction nozzle, so that water having been used for automatic wet sanding can be suctioned through the suction nozzle. This can significantly reduce the amount of water containing sanding dust that flows down a painted surface under the suction nozzle, and thereby reduce the amount of sanding dust that remains on the painted surface after completion of automatic wet sanding. As a result, it is possible to achieve a quality finish on the painted surface while eliminating the need for the troublesome task of wiping off remaining sanding dust.

The invention relates to implement the sealing, porosity and sweeping functions, combined. For this purpose, the present invention proposes to confine the waste and to suction the waste at the ejection head by means of a sufficiently flexible connection, such as to remain in contact with the machining area. According to an embodiment, a portable machining machine (1) operated by a pressurized jet (112) includes a waste recovery system (5), an injection head (11) which is provided with a nozzle (111) having an axis (A1) that is substantially perpendicular to the surface to be machined (4a) and which is driven by a digitally controlled two-axle guide system, the ejection head (11) being extended by an enclosure (12) to the surface area to be machined (4a). In addition, the enclosure (12) comprises a tubular portion (121) consisting of two walls (12a, 12b) which slide coaxially along the axis (A1) and a double-pivot articulation device (123). The enclosure (12) has a porous annular wall (124) in a plane substantially perpendicular to the axis (A1) of the nozzle (111), said annular wall (124) having sufficient resilience to keep the enclosure (12) in permanent sealing contact with the surface to be machined (4; 4a, 4b).

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 pipeline exterior blasting system includes a containment enclosure, a blasting subsystem, and a waste material removal subsystem. The containment enclosure is configured to enclose a section of a pipeline. The blasting subsystem is configured to propel blasting material at an exterior surface of the section of pipeline within the containment enclosure. The waste material removal subsystem configured to remove blasting waste material from within the containment enclosure. A method of treating an exterior surface of a section of pipeline includes enclosing the section of pipeline within a containment enclosure. Blasting material is propelled at the exterior surface of the section of pipeline within the containment enclosure, after which blasting waste material is removed from within the containment enclosure.

A masking fixture includes a flexible cover and a rigid cover. The flexible cover is received within a cavity of the rigid cover. An air connector provides for a purge flow supply to be connected to the masking fixture via a port in fluid communication with an enclosure of the flexible cover. A method of treating a workpiece includes directing a pressurized fluid jet comprising an abrasive media entrained therein against an exterior surface of the workpiece and directing a purge flow through the workpiece while directing the pressurized fluid jet against the exterior surface.

The temperature of the chamber housing a shot wheel of a shot blaster is controlled by positioning a fan exterior to the chamber that creates air flow across a mounting plate defining the chamber. The air flow created by the fan may also pass around the bearing surrounding the drive shaft that turns the shot wheel.

A universal adapter includes a main tube for a combined suction unit and blasting unit. The main tube has a first connecting section for connection to a suction line of the suction unit and a second connecting section for connection to a working chamber. In order to reduce the number of suction adapters needed to connect to different openings in working chambers, the second connecting section is made of a flexible material and has a cutout in its periphery that extends from a free end of the second connecting section in the direction of the longitudinal axis of the main pipe.

A method for machining at least one portion of a surface of a component for a vehicle, which is painted with a layer of clear coat of a given first layer thickness. The component is situated in an inner space of a blasting chamber. An opening of at least one conveying device for a blasting material emerges into the inner space. The inner space of the blasting chamber and the component are placed entirely under a partial vacuum. Blasting material in a carrier air flow generated by the partial vacuum is supplied through the opening of the conveying device to the inner space. The portion of the surface being machined and the opening of the conveying device are moved relative to each other. The blasting material is shot from the opening of the conveying device onto the portion of the surface being machined.

A pickling tool configured for pickling a surface of an element, comprising a supply conduit delimiting a supply channel configured to be in pneumatic communication with a source of compressed air laden with a powder of an abrasive product, a removal conduit delimiting a removal channel configured to be in pneumatic communication with a suction source, and a nozzle having an opening that communicates with the exterior and is configured to face the surface, wherein the nozzle is in pneumatic communication with the supply channel and the removal channel Such a tool thus allows the passage of a flow of air for spraying the abrasive and the suction of the abrasive and of the powder arising from abrasion.

Essential constructive elements of the currently known machines and devices, which work by means of vacuum blasting, are improved in the surface cleaning and engraving machine that operates via a vacuum jet process in order to enable more effective cleaning of different surfaces, further applications and simplification of the handling of the machine or device. With the modifications and additions made, the application options of the machine or device are increased, the potential of clogging the suction hose is reduced to a minimum, the service life of the machine is extended and the efficiency and operating options of the blasting hood are improved. For this purpose, technical and design details of an already known machine are supplemented and improved; there are, for instance, a metering device (3), additions to the blasting hood (6) and measures to extend the service life of the machine by using rock impact films (31).