A wheel deburring device. A motor II drives an upper brush to rotate, cylinders II enable the upper brush to fall through posts III, and burrs of a front surface can be removed when the upper brush is in contact with the front surface of a wheel; a motor I enables an outer ring and a geared ring I to rotate through a belt I; a motor III enables an inner ring and a geared ring II to rotate through a belt II, directions of rotation of the inner ring and the geared ring II are opposite to that of the outer ring, and brushes are driven to rotate through a gear; and cylinders IV enable a lower brush to rise through guide posts I, and burrs of a back cavity of the wheel can be removed when the lower brush is in contact with that back cavity.

The present invention provides a device and method for installing sensor/transductor elements on the inside wall of tubular structures, comprising a step of cleaning the inside of a duct and a step of installing the sensor/transductor. The mechanical device that is the subject matter of the present invention comprises four articulated arms (2), each one being coupled at the ends thereof to through-slits (23) in prismatic components (21) and the latter coupled to control elements (1) and (31) which by means of the threaded axial through-holes (24) thereof are screwed to the power screw axes (30) and (32) and by actuating same by rotating the extension tube (5) cause radial movement of the articulated arms (2), said retractable mechanical device also comprising centralizing elements (34) composed of at least 4 spring shafts (35).

The present invention provides a device and method for installing sensor/transductor elements on the inside wall of tubular structures, comprising a step of cleaning the inside of a duct and a step of installing the sensor/transductor. The mechanical device that is the subject matter of the present invention comprises four articulated arms (2), each one being coupled at the ends thereof to through-slits (23) in prismatic components (21) and the latter coupled to control elements (1) and (31) which by means of the threaded axial through-holes (24) thereof are screwed to the power screw axes (30) and (32) and by actuating same by rotating the extension tube (5) cause radial movement of the articulated arms (2), said retractable mechanical device also comprising centralizing elements (34) composed of at least 4 spring shafts (35).

A method for treating an interior weld joint located along an inner surface of a pipe includes the steps of: (a) advancing an internal grinder device within the pipe to the interior weld joint, wherein the internal grinder device includes a hollow housing that has a first open end and a first grinding implement that is disposed within the hollow housing and coupled thereto with a first biasing member; and (b) controllably rotating the hollow housing to at least a threshold speed at which time and under centrifugal force, the first grinding implement moves from an at rest retracted position to a deployed position in which the first grinding implement extends radially beyond the first open end for contacting and grinding the interior weld joint as the hollow housing and the first grinding implement are rotated.

A method for treating an interior weld joint located along an inner surface of a pipe includes the steps of: (a) advancing an internal grinder device within the pipe to the interior weld joint, wherein the internal grinder device includes a hollow housing that has a first open end and a first grinding implement that is disposed within the hollow housing and coupled thereto with a first biasing member; and (b) controllably rotating the hollow housing to at least a threshold speed at which time and under centrifugal force, the first grinding implement moves from an at rest retracted position to a deployed position in which the first grinding implement extends radially beyond the first open end for contacting and grinding the interior weld joint as the hollow housing and the first grinding implement are rotated.

A tool for removing a coating from an interior surface of a component. The tool includes a rotary device; a grinding attachment attached to the rotary device; a tool holder configured to: set an axial position of the grinding attachment coupled to the rotary device over the coating on the interior surface of the component; and set a radial position of the grinding attachment coupled to the rotary device, the radial position defining a cutting depth of the grinding attachment into the coating on the interior surface of the component; and a wheel assembly coupled to the tool holder for guiding the tool holder about an interior perimeter of the component.

An instrument for the mechanical removal of corrosive buildup, deposits or scale from within a wellbore. A tubing-conveyed scraping blade and/or other abrading devices (50) has a collapsible maximum outer diameter by using a multi-bar mechanism (53, 54) to ensure physical contact with corrosive buildup, deposits or scale on surfaces of a surrounding wellbore, oil and gas tubular, or drilling/production marine riser (and, in particular, inner surfaces thereof). The multi-bar mechanism allows for a wide range of motion irrespective of the direction of loading and variable maximum outer diameter to clean corrosive buildup, deposits or scale from tubular goods with unknown configurations and/or dimensions.

An instrument for the mechanical removal of corrosive buildup, deposits or scale from within a wellbore. A tubing-conveyed scraping blade and/or other abrading devices (50) has a collapsible maximum outer diameter by using a multi-bar mechanism (53, 54) to ensure physical contact with corrosive buildup, deposits or scale on surfaces of a surrounding wellbore, oil and gas tubular, or drilling/production marine riser (and, in particular, inner surfaces thereof). The multi-bar mechanism allows for a wide range of motion irrespective of the direction of loading and variable maximum outer diameter to clean corrosive buildup, deposits or scale from tubular goods with unknown configurations and/or dimensions.

A tool (1) for mechanochemical treatment comprises a shaft (10), a number n of working ledges (20), n≧1, and a force application arrangement (2). The force application arrangement (2) is configured for applying a working force (F) on the working ledges (20). The working ledges (20) comprises wear-resistant material with a Vickers number above 800 HV and a Young modulus above 200 GPa. Each working ledge (20) has a contact surface (22) facing away from a main axis (11) and having a surface roughness Ra below I μm. The contact surface (22) has a convex curvature which has a radius of curvature that is at most equal to a closest distance from that point to the main axis. A width of the contact surface (22) is less than r/2n. The working force applied on each working ledge (20) is at least P−L−r/2n, where P=107 Pa and L is the contact surface length.

A method for preparing a multilayer metal composite pipe includes steps of: internally and externally grinding blank pipes; cleaning oil stains; assembling a multilayer metal pipe; drawing to reduce a diameter; performing high-speed friction welding at the pipe ends; performing heat treatment; performing four-roller cross-rolling; straightening; performing two-roller cold-rolling; performing cold-drawing to reduce the diameter; performing cold-expansion to reduce the diameter; performing precise cold-rolling; degreasing; brightening; performing surface grinding; cleaning dust; detecting multilayer metal interface bonding; detecting flaws; testing metal structure performance; and sizing and packaging. By cycling the cold-drawing, the cold-expansion, and the precision cold-rolling, key indicators such as product dimensional accuracy, surface quality, material properties, and crystal grain size can be collaboratively controlled, so as to achieve higher accuracy, better performance, and more outstanding extreme specifications. The present invention solves the problem of inconsistent extension due to differences in metal properties.