FIELD: combination type working of metals, restoration and hardening of cone threaded surfaces.
SUBSTANCE: tool is used, mainly for working oil production pipes. Tool includes body having in its outlet portion working threaded surface reciprocal to worked thread and provided at least with one groove that crosses turns of thread of working surface. In order to increase useful life period of parts having cone thread, edges of groove corresponding to thread profile of working surface in zone of crossing with planes of groove sides are blunted wholly or partially.
EFFECT: increased useful life period of tool.
5 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TOOL FOR ULTRASONIC WORKING OF CONE THREAD OF PARTS | 2004 |
|
RU2271912C1 |
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RU2302936C2 |
