FIELD: metallurgy.
SUBSTANCE: invention concerns metal deformation process. Particularly it concerns pipe-bending manufacturing and can be used in different industries while manufacturing of bent pipelines. Thin-walled pipe is loaded by filler in the capacity of which there is used water-soaked wadding. Porosity of which and the temperature of wadding freeze are used from ensuring of conditions of its volume increasing after its freezing and achieving of its maximal firmness on squeezing at absence of pipe forming before the beginning of its bending. Then it is implemented freezing and pipe forming by means of pipe-bending machine.
EFFECT: improvement of bending.
| Title | Year | Author | Number |
|---|---|---|---|
| THIN-WALL TUBES BENDING METHOD | 2006 |
|
RU2308342C1 |
| METHOD FOR BENDING THIN-WALL PIPES WITH FILLER | 2006 |
|
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|
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|
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| METHOD OF BENDING PIPES WITH FILLER | 2006 |
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|
RU2324560C2 |
| METHOD OF BENDING TUBES AND THE MANDREL FOR EFFECTING SAME | 0 |
|
SU1165509A1 |
