FIELD: machine building.
SUBSTANCE: invention relates to dismantling of damaged threaded parts. Longitudinal bore is made in the extracted part. Thread of said hole is cut. Obtained hole is filled with liquid nitrogen and then an additional threaded element with a left-hand thread and a groove is screwed into it along the whole length of its side surface, which is made for output of nitrogen vapors. Then the part is removed.
EFFECT: as a result, the method is extended.
1 cl
| Title | Year | Author | Number |
|---|---|---|---|
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|
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SU982892A1 |
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|
SU988517A1 |
| SCREW STRIPPER | 2001 |
|
RU2204468C2 |
