A tool for cold-working a metal substrate of a longitudinal bore having a diameter less than about eight inches includes a deflector tip configured to direct accelerated shot having diameters on average not larger than 100 mils (2.54 mm) toward a surface of the metal substrate at an angle between about 70 degrees and about 85 degrees relative to the surface, thereby providing increased compressive stresses in the metal substrate.

A water-abrasive cutting system includes a cutting head (2) which includes a fixing device (16, 18, 20) for fixing the cutting head (2) on the wall to be cut as well as a nozzle head (10) disposed on the cutting head (2). At least one cutting nozzle (12), for an application of a cutting jet (14), is disposed in the cutting head (2). A cutting monitoring device (26) includes at least one hydrophone (30) and at least one further sensor. The cutting monitoring device (26) is configured to detect a complete penetration and/or cutting-through of the wall on the basis of the sensor signals of the hydrophone (30) and the at least one further sensor.

An object of the present invention is to provide a cavitation processing method for performing the cavitation processing on a side surface of an target hole of an workpiece. The cavitation processing method, includes: immersing a workpiece and a nozzle in a processing liquid, the workpiece having a target hole having an axial line and a side surface, the nozzle having an ejection port; and ejecting a jet of the processing liquid containing a cavity along an ejection direction, the ejection direction being inclined with respect to the axial line as viewed from perpendicular to the axial line and being inclined with respect to a normal line from the ejection port to the side surface as viewed along the axial line.

A tool for cold-working a metal substrate of a longitudinal bore having a diameter less than about eight inches includes a deflector tip configured to direct accelerated shot having diameters on average not larger than 100 mils (2.54 mm) toward a surface of the metal substrate at an angle between about 70 degrees and about 85 degrees relative to the surface, thereby providing increased compressive stresses in the metal substrate.

An apparatus for blasting a media onto a surface comprises an oscillating nozzle, a mount and a power source. The mount attaches the nozzle to tooling, enabling the nozzle to be raised and lowered about a vertical axis, and enabling the nozzle to be repositioned about a horizontal axis. The power source enables the nozzle to oscillate. The blasting media is sprayed through the nozzle onto the surface. The oscillating nozzle projects an enlarged dispersion pattern of the blasting media onto the surface being treated. The apparatus may include a basket positioned near the mount, enabling an operator to be positioned upon a truss and control the blasting of the media onto the surface, the basket being mounted via a swivel bearing, enabling the basket to self-level. Also, the media blasting apparatus may be controlled by an operator positioned in a remote control computer area.

In a trial peening step, a shot peening process is applied to a back face 40B of a mold 40 in which an opening of a closed-end water cooling hole 42 is formed. Next, in an evaluation step, compressive residual stress and surface roughness of a region shot-peened in the trial peening step are measured and an extent of shot peening treatment in the trial peening step is evaluated based on measurement results. Next, in a peening step, a surface of the water cooling hole 42 in the mold 40 is shot-peened under peening conditions set based on peening conditions for the trial peening step and on evaluation results produced in the evaluation step.

An apparatus for servicing pipes includes a pipe holder having a frame configured to support the pipe and a movement assembly coupled to the frame and configured to rotate the pipe about a longitudinal axis of the pipe, and a first pipe servicing tool disposed proximate to an end of the pipe holder, where the first pipe servicing tool is configured to operably engage an end of the pipe when the pipe is rotated by the movement assembly.

Methods and arrangements are provided for release of an ROV operable subsea clamp connector, the clamp connector comprising at least two clamp segments hinged to move pivotally, and a drive screw connecting the clamp segments by threaded engagement with trunnions arranged rotatable in the pivoting ends of the clamp segments, the threads of the drive screw and trunnions turned such that the trunnions travel along the drive screw in mutually opposite directions when the drive screw is turned. An axial bore in the drive screw is adapted for accommodation of a waterjet cutting tool having a sideways pointing nozzle in a forward end, the waterjet cutting tool rotatable inside the bore while feeding high-pressure water through the nozzle, towards the wall of the drive screw until the wall of the drive screw is cut through.

An apparatus includes an injection part, a transfer part, a pressure supply part, a collision part and an emission part. An object is injected through the injection part. The transfer part is connected to the injection part, and bended at a plurality of points thereof. The object passes through the transfer part. The pressure supply part is connected to the transfer part and supplies a pressure into the transfer part to move the object. The collision part collides with the object moving in the transfer part to treat a surface of the object. The emission part is connected to the transfer part, and the object having the treated surface is emitted through the emission part.

A grit blasting arrangement for cleaning chemical reactor tubes includes means for ensuring the grit blast nozzle is coaxial with the longitudinal axis of the tube to be cleaned. The grit blasting device for cleaning tubes spaced apart by upper and lower tubesheets. The grit blasting device includes a grit blast nozzle mounted on a positioning frame and projecting outwardly with an outlet directed into a tube opening during a cleaning operation. The device includes a plurality of stop pins mounted on the positioning frame designed to abut a tubesheet and to define an imaginary plane coplanar with the tubesheet. The plurality of stop pins when abutting the tubesheet prevent the outlet of the nozzle from extending into the tube causing a venturi effect.