FIELD: process engineering.
SUBSTANCE: system of passes comprises alternating oval and ribbed oval passes and round finishing pass. Graded transition of profile cross-section elements in deformation is ensured by making oval passes with relationship of the length of axes making 2.0-2.5, ribbed oval passes, apart from pre-finishing one, feature said relation ship making 1.1-1.3 while pre-finishing oval pass feature this relationship equal to 3.0-3.5. Note here that relationship between clearance area of previous pass and oval pass area makes 1.30-1.45. Note also that relationship between are of previous oval pass and area of ribbed oval pass makes 1.20-1.30. Opposite radii of roundness of pre-finishing pass ribbed oval on its longer axis equals the radius of finishing round pass.
EFFECT: ruled out crack formation and fractures in shaped round rolled stock.
2 cl, 1 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR ROLLING ROUND CROSS SECTION SHAPES | 1999 |
|
RU2170150C1 |
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|
RU2237529C1 |
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| ROLLED REINFORCEMENT PRODUCING METHOD | 2005 |
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RU2306989C2 |
| PLANISHING PASS FOR ROLLING SCREW REINFORCED PROFILE | 0 |
|
SU1528586A1 |
| METHOD OF ROLLING SECTION BARS FROM HARD-TO-DEFORM STEELS | 2011 |
|
RU2490081C2 |
| PASSES SYSTEM OF FIRST TWO SECTION ROLLING MILL STANDS OF ROLLS | 1992 |
|
RU2070446C1 |
