METHOD OF RECONDITIONING OF A THREAD Russian patent published in 2005 - IPC

FIELD: reconditioning of threads of components.

SUBSTANCE: the invention is dealt with repair and recovery of threads on components. Machining is realized by two tools with electrocontact heating of a rotating component. The first tool is installed in a position located in a cavity of a standard thread and conduct finishing-strengthening machining. The second tool is positioned in the beginning of a worn thread and displaced in respect to the first. Movement of the second tool is exercised along the spiral line at the point of overlapping of coils of the threads of the first and second tools and the electrocontact reconditioning is made at the expense of plastic redistribution of the material. The machining is realized with a different force of pressing of the tools to the treated surfaces. The invention allows to restore the profile of the thread and to improve its properties on the components having a wear on a separate section along the length of the of a spiral surface.

EFFECT: the invention ensures reconditioning of the profile of the thread, improvement of its properties on the components having the worn separate sections along the length of the spiral surfaces.

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