FIELD: machine building.
SUBSTANCE: method to protect large high-loaded threaded joints aimed at the connection of a cover with the casing of a steam generator chamber, against stiffening involves preliminary coating of the stud thread with a screen layer before the threaded joint is made. Prior to screwing the stud into the steam generator chamber casing and screwing of a nut on the stud, one of the parts to be connected is coated by high-temperature grease. Prior to the stud screwing, the thread is preliminary rolled in the chamber casing by stressed action of a roller on its side surfaces. After screwing, the stud is extracted.
EFFECT: multiple usage of studs and nuts to fix the covers of chamber casings at steam generator units in a reactor plant.
4 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| STEAM GENERATOR | 1993 |
|
RU2068149C1 |
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|
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|
SU830027A1 |
| THREADED JOINT OF PARTS WITH SINGLE-SIDE ACCESS | 0 |
|
SU958728A1 |
| METHOD OF MAKING THREAD JOINTS | 2011 |
|
RU2502591C2 |
| METHOD OF LOCKING OF THREADED FASTENING JOINT | 2013 |
|
RU2530865C1 |
| METHOD OF FIXING THREADED JOINTS | 1990 |
|
RU2027082C1 |
| TIGHTENING METHOD OF HIGH-LOAD THREADED JOINT | 2011 |
|
RU2475651C1 |
| THREADED JOINT | 1992 |
|
RU2029894C1 |
| NUCLEAR REACTOR WITH A FAN VERTICALLY DISPOSED OVER STEAM GENERATOR | 0 |
|
SU1809929A3 |
