A device for cold rolling a thread on a tubular support member of a rotary shouldered thread connection includes obtaining an original root depth of a thread root, cold rolling the thread until a minimum increased root depth tolerance is achieved.

Thread repair tools having (i) a disc-shaped member with an axis of rotation extending through and dissecting first and second major surfaces of the disc-shaped member, (ii) a shaft fixedly connected to or fixedly connectable to the disc-shaped member, with the shaft extending from the second major surface of the disc-shaped member along the axis of rotation; and (iii) an abrasive surface along an outer periphery of the disc-shaped member are disclosed. Methods of making the thread repair tools, and methods of using the thread repair tools are also disclosed. Methods of using the thread repair tools include a method of: (i) connecting the thread repair tool to a hand-held powered device capable of rotating the thread repair tool along the axis of rotation of the thread repair tool, and (ii) abrading an object with the disc-shaped member of the thread repair tool as the thread repair tool is rotated along the axis of rotation by the hand-held powered device.

A method of cold rolling a thread on a tubular support member of a rotary shouldered thread connection includes obtaining an original root depth of a thread root, cold rolling the thread until a minimum increased root depth tolerance is achieved. The thread may be cold rolled with a wheel tip having an elliptical profile.

Disclosed is a thread chase or tap capable of being inserted past damaged threads of a female threaded coupling and then rotated back to repair the damaged threads. The thread chase can be selectively expanded to engage chase blocks having cutting teeth against threads. Thereafter, a user can rotate the thread chase in a direction sufficient to cause the thread chase to move axially out of the female threaded coupling. Upon doing so, the chase blocks can be pushed outwardly and engage undamaged threads, and rotated so as to move upward and repair damaged threads.

A split thread die device is disclosed. The device is comprised of a first half and a second half that can be secured to each other around a damaged area of threads of a fastener. The device can then be turned to re-thread the damaged threads. In addition, a top surface of each half is comprised of an opening that extends to the inside surface of each half. The opening allows a cutting lubricant to easily flow from the top surface of each half and onto the threads of the fastener contacting the inside surfaces.

A method for repairing a damaged bolt located on a baseplate in a bolted joint, the damaged bolt having a nut threaded thereon, and the damaged bolt having a deformed portion and a residual portion, wherein the residual portion is at least partially within the nut, the method comprising: removing the deformed portion of the bolt; removing the nut from the residual portion of the bolt; inspecting the residual portion of the bolt; installing a coupling over the residual portion of the bolt; installing an anchor bolt into the coupling; installing a bolt stool over the coupling, the anchor bolt, and the residual portion of the bolt; installing a securing nut onto the anchor bolt to secure the bolt stool in place; and tensioning the anchor bolt with a tensioner to a predetermined tension.

A method for remanufacturing an ultra-large copper nut includes steps of: step (1) coarsening treatment; step (2) purifying treatment; step (3) detecting a material of the ultra-large copper nut; step (4) sleeving a thermal insulation device; step (5) preheating the ultra-large copper nut; step (6) melting-deposition shaping; step (7) post-processing; and step (8) detecting. The method of the present invention simultaneously utilizes water, electricity, gas, fire and machine and performs melting-deposition on materials by simultaneously supplying water, electricity, gas, fire and machine according to the designed requirements. The method of the present invention solves problems of large thickness abrasion and remediation of fracture components. The method of the present invention is capable of preventing the ultra-large copper nut from deformation and collapse and is a feasible remanufacturing for decreasing the huge economic loss caused by damages of expensive ultra-large of nonferrous metals.

A one piece hand tool is provided for cleaning and chasing water faucet threads. The hand tool has an engagement end and an operating end spaced along a central tool axis. Intermediate the engagement end and operating end, an external surface is provided with an overall hexagonal configuration. The engagement end is open for accessing an internal threaded surface for engagement with water faucet threads to be cleaned. Four equally spaced vertical grooves parallel with the central tool axis are provided in the internal threaded surface of the hand tool and disrupt the internal threaded surface to contain debris during operation of the tool. The internal threaded surface has sharp leading and trailing edges for cleaning and chasing the water faucet threads during engagement and disengagement with the hand tool.

A dental tool for resurfacing thread forms of a dental implant is disclosed. The tool includes a main body having a cylindrical member with a slot. A blade having a head is inserted in the slot to orient the head to protrude from the interior surface of the cylindrical member of the main body. The main body may be rotated into traversing a thread form of the implant. A compression sleeve is inserted over the main body. The compression sleeve has an open position and a closed position to hold the blade in the slot.

An additive repair device for internal threads is provided. The device includes a moving assembly, a rotating assembly, a speed regulation assembly, a gear assembly, an additive assembly, and a connecting assembly. The moving assembly includes a drive part and a linear movement mechanism. The additive assembly is connected to the linear movement mechanism through the connecting assembly. One end, which is far away from the drive part, of the linear movement mechanism is connected to an input end of the speed regulation assembly through the gear assembly. The rotating assembly includes a clutch mechanism and a clamping mechanism. The clutch mechanism includes a clutch outer gear and a clutch inner gear. The clutch outer gear is arranged at an output end of the speed regulation assembly. The clamping mechanism is fixed to one end, which is far away from the speed regulation assembly, of the clutch inner gear.