FIELD: process engineering.
SUBSTANCE: rolling mill comprises the first working rolls (1, 2) revolving at first angle (β) relative to rolling axis at preset spacing (H1, H2) therefrom on diametrically opposite sides therefrom, nozzle (3) arranged at beam (4). Note here that tubular blank (14) can displace forward, run between first rolls and nozzle and be strained for perimeter enlargement. Higher precision of shapes and sizes is ensured by equipping the rolling mill with built-in nozzle stabiliser system arranged behind said nozzle and round said beam. Note here that this system comprises cylindrical stabiliser ring (16) arranged behind nozzle (3) inside tubular blank and means (7, 8, 9, 10, 11, 12, 13, 15) to press against blank outer surface on ring (1) in direction, in fact, at right angle to first working rolls (1, 2).
EFFECT: higher quality of pipes.
9 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MILL STAND FOR CALIBRATION OR REDUCING MILL WITH MULTIPLE POINTS OF PRESSURE APPLICATION | 2012 |
|
RU2577644C2 |
| SCREW ROLLING MIL ROLL | 2013 |
|
RU2517647C1 |
| FINISHING MONOBLOCK FOR BLANK ROLLING UNIT DESIGNED FOR HIGH QUALITY ROD PRODUCTION | 2005 |
|
RU2374016C2 |
| HOT-ROLLED PREFINISHING OVAL PROFILE FOR PRODUCING ROUND BILLET | 0 |
|
SU1560335A1 |
| ROLLING MILL FOR MANUFACTURING OF SEAMLESS PIPES AND OPERATION METHOD OF ROLLING MILL | 2008 |
|
RU2379141C2 |
| ROLLING MILL FOR MAKING SEAMLESS TUBES | 2004 |
|
RU2270068C1 |
| METHOD FOR CONTROLLING REVOLUTION NUMBER OF ROLLS IN ORDER TO MINIMIZE TUBE INNER MULTIARC PROFILE FORMATION AT PASSING TUBE | 2000 |
|
RU2247615C2 |
| METHOD OF LENGTHWISE SCREW ROLLING | 0 |
|
SU706144A1 |
| SLEEVE PRODUCTION METHOD | 2003 |
|
RU2245751C1 |
| METHOD OF CONTINUOUS ROLLING AND CONTINUOUS MULTISTAND MILL FOR IMPLEMENTATION THEREOF | 2015 |
|
RU2614974C1 |
