FIELD: mechanical engineering. SUBSTANCE: method involves additional laser treatment of thread protrusion surfaces of both members of threaded connection in modes different from modes of treating thread slots. As a result layer with heterogeneous electrochemical characteristics is formed on treated thread protrusion surfaces. EFFECT: increased corrosion-fatigue service life by improved protection of stress concentrators. 2 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREVENTION OF CORROSION OF SURFACES OF METAL ARTICLES | 1994 |
|
RU2061100C1 |
| METHOD OF CONNECTION OF ENAMELLED PIPES | 1996 |
|
RU2109197C1 |
| PROCESS OF DETERMINATION OF FATIGUE CHARACTERISTIC OF FERROMAGNETIC MATERIALS AND WELDS | 1995 |
|
RU2095784C1 |
| THROTTLE UNIT | 1995 |
|
RU2080507C1 |
| METHOD OF DETERMINING PHASE DEBITS IN OIL WELL | 1996 |
|
RU2097554C1 |
| METHOD FOR TREATING DOWN-HOLE ZONE OF WELL BED | 1996 |
|
RU2105875C1 |
| METHOD OF CORROSION PROTECTION OF INTERNAL SURFACES OF WELDED JOINTS OF PIPES | 1997 |
|
RU2122150C1 |
| THREAD STRENGTHENING METHOD | 2013 |
|
RU2554244C1 |
| METHOD FOR DETERMINING PHASE FLOW RATES OF GAS-LIQUID MIXTURE IN PRODUCING WELL | 1995 |
|
RU2085733C1 |
| METHOD OF CONTROL OF MOTION OF FORMATION FLUID IN CASING STRING-BOREHOLE ANNULUS OF DEVELOPMENT WELL | 1995 |
|
RU2078923C1 |
